./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3971530889

<...>
Warning: Permanently added '10.128.0.222' (ED25519) to the list of known hosts.
execve("./syz-executor3971530889", ["./syz-executor3971530889"], 0x7ffd6af376a0 /* 10 vars */) = 0
brk(NULL)                               = 0x5555570a9000
brk(0x5555570a9d40)                     = 0x5555570a9d40
arch_prctl(ARCH_SET_FS, 0x5555570a93c0) = 0
set_tid_address(0x5555570a9690)         = 5072
set_robust_list(0x5555570a96a0, 24)     = 0
rseq(0x5555570a9ce0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor3971530889", 4096) = 28
getrandom("\x86\x3a\x1a\xb3\x31\x4b\xac\xd0", 8, GRND_NONBLOCK) = 8
brk(NULL)                               = 0x5555570a9d40
brk(0x5555570cad40)                     = 0x5555570cad40
brk(0x5555570cb000)                     = 0x5555570cb000
mprotect(0x7f8786518000, 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
mount(NULL, "/proc/sys/fs/binfmt_misc", "binfmt_misc", 0, NULL) = -1 EBUSY (Device or resource busy)
openat(AT_FDCWD, "/proc/sys/fs/binfmt_misc/register", O_WRONLY|O_CLOEXEC) = 3
write(3, "\x3a\x73\x79\x7a\x30\x3a\x4d\x3a\x30\x3a\x01\x3a\x3a\x2e\x2f\x66\x69\x6c\x65\x30\x3a", 21) = 21
close(3)                                = 0
openat(AT_FDCWD, "/proc/sys/fs/binfmt_misc/register", O_WRONLY|O_CLOEXEC) = 3
write(3, "\x3a\x73\x79\x7a\x31\x3a\x4d\x3a\x31\x3a\x02\x3a\x3a\x2e\x2f\x66\x69\x6c\x65\x30\x3a\x50\x4f\x43", 24) = 24
close(3)                                = 0
mkdir("./syzkaller.hj4rDy", 0700)       = 0
chmod("./syzkaller.hj4rDy", 0777)       = 0
chdir("./syzkaller.hj4rDy")             = 0
unshare(CLONE_NEWPID)                   = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5073 attached
, child_tidptr=0x5555570a9690) = 5073
[pid  5073] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5073] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy)
[pid  5073] socket(AF_BLUETOOTH, SOCK_RAW, BTPROTO_HCI) = 3
[pid  5073] openat(AT_FDCWD, "/dev/vhci", O_RDWR) = 4
[pid  5073] dup2(4, 202)                = 202
[pid  5073] close(4)                    = 0
[pid  5073] write(202, "\xff\x00", 2)   = 2
[pid  5073] read(202, "\xff\x00\x00\x00", 4) = 4
[pid  5073] rt_sigaction(SIGRT_1, {sa_handler=0x7f87864b7c50, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f87864a8e00}, NULL, 8) = 0
[pid  5073] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
[pid  5073] mmap(NULL, 8392704, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c4d000
[pid  5073] mprotect(0x7f8785c4e000, 8388608, PROT_READ|PROT_WRITE) = 0
[pid  5073] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5073] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f878644d990, parent_tid=0x7f878644d990, exit_signal=0, stack=0x7f8785c4d000, stack_size=0x800300, tls=0x7f878644d6c0}./strace-static-x86_64: Process 5076 attached
 <unfinished ...>
[pid  5076] rseq(0x7f878644dfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  5073] <... clone3 resumed> => {parent_tid=[2]}, 88) = 2
[pid  5076] <... rseq resumed>)         = 0
[pid  5073] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5076] set_robust_list(0x7f878644d9a0, 24 <unfinished ...>
[pid  5073] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5076] <... set_robust_list resumed>) = 0
[pid  5073] ioctl(3, HCIDEVUP <unfinished ...>
[pid  5076] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5076] read(202, "\x01\x03\x0c\x00", 1024) = 4
[pid  5076] writev(202, [{iov_base="\x04", iov_len=1}, {iov_base="\x0e\xfc", iov_len=2}, {iov_base="\x01\x03\x0c", iov_len=3}, {iov_base="\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=249}], 4) = 255
[pid  5076] read(202, "\x01\x03\x10\x00", 1024) = 4
[pid  5076] writev(202, [{iov_base="\x04", iov_len=1}, {iov_base="\x0e\xfc", iov_len=2}, {iov_base="\x01\x03\x10", iov_len=3}, {iov_base="\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=249}], 4) = 255
[pid  5076] read(202, "\x01\x01\x10\x00", 1024) = 4
[pid  5076] writev(202, [{iov_base="\x04", iov_len=1}, {iov_base="\x0e\xfc", iov_len=2}, {iov_base="\x01\x01\x10", iov_len=3}, {iov_base="\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=249}], 4) = 255
[pid  5076] read(202, "\x01\x09\x10\x00", 1024) = 4
[pid  5076] writev(202, [{iov_base="\x04", iov_len=1}, {iov_base="\x0e\x0a", iov_len=2}, {iov_base="\x01\x09\x10", iov_len=3}, {iov_base="\x00\xaa\xaa\xaa\xaa\xaa\xaa", iov_len=7}], 4) = 13
[pid  5076] read(202, "\x01\x05\x10\x00", 1024) = 4
[pid  5076] writev(202, [{iov_base="\x04", iov_len=1}, {iov_base="\x0e\x0b", iov_len=2}, {iov_base="\x01\x05\x10", iov_len=3}, {iov_base="\x00\xfd\x03\x60\x04\x00\x06\x00", iov_len=8}], 4) = 14
[pid  5076] read(202, "\x01\x23\x0c\x00", 1024) = 4
[pid  5076] writev(202, [{iov_base="\x04", iov_len=1}, {iov_base="\x0e\xfc", iov_len=2}, {iov_base="\x01\x23\x0c", iov_len=3}, {iov_base="\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=249}], 4) = 255
[   86.268073][ T5074] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1
[   86.276556][ T5074] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9
[   86.297185][ T5074] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9
[pid  5076] read(202, "\x01\x14\x0c\x00", 1024) = 4
[pid  5076] writev(202, [{iov_base="\x04", iov_len=1}, {iov_base="\x0e\xfc", iov_len=2}, {iov_base="\x01\x14\x0c", iov_len=3}, {iov_base="\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=249}], 4) = 255
[pid  5076] read(202, "\x01\x25\x0c\x00", 1024) = 4
[pid  5076] writev(202, [{iov_base="\x04", iov_len=1}, {iov_base="\x0e\xfc", iov_len=2}, {iov_base="\x01\x25\x0c", iov_len=3}, {iov_base="\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=249}], 4) = 255
[pid  5076] read(202, "\x01\x38\x0c\x00", 1024) = 4
[pid  5076] writev(202, [{iov_base="\x04", iov_len=1}, {iov_base="\x0e\xfc", iov_len=2}, {iov_base="\x01\x38\x0c", iov_len=3}, {iov_base="\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=249}], 4) = 255
[pid  5076] read(202, "\x01\x39\x0c\x00", 1024) = 4
[pid  5076] writev(202, [{iov_base="\x04", iov_len=1}, {iov_base="\x0e\xfc", iov_len=2}, {iov_base="\x01\x39\x0c", iov_len=3}, {iov_base="\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=249}], 4) = 255
[pid  5076] read(202, "\x01\x16\x0c\x02\x00\x7d", 1024) = 6
[pid  5076] writev(202, [{iov_base="\x04", iov_len=1}, {iov_base="\x0e\xfc", iov_len=2}, {iov_base="\x01\x16\x0c", iov_len=3}, {iov_base="\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=249}], 4) = 255
[pid  5076] read(202,  <unfinished ...>
[pid  5073] <... ioctl resumed>, 0)     = -1 EALREADY (Operation already in progress)
[   86.326628][ T5074] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4
[   86.335770][ T5074] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3
[   86.353970][ T5074] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2
[pid  5073] ioctl(3, HCISETSCAN <unfinished ...>
[pid  5076] <... read resumed>"\x01\x1a\x0c\x01\x02", 1024) = 5
[pid  5076] writev(202, [{iov_base="\x04", iov_len=1}, {iov_base="\x0e\x04", iov_len=2}, {iov_base="\x01\x1a\x0c", iov_len=3}, {iov_base="\x00", iov_len=1}], 4) = 7
[pid  5076] rt_sigprocmask(SIG_BLOCK, ~[RT_1], NULL, 8) = 0
[pid  5073] <... ioctl resumed>, 0x7ffd5084a080) = 0
[pid  5076] madvise(0x7f8785c4d000, 8372224, MADV_DONTNEED <unfinished ...>
[pid  5073] writev(202, [{iov_base="\x04", iov_len=1}, {iov_base="\x04\x0a", iov_len=2}, {iov_base="\xaa\xaa\xaa\xaa\xaa\x10\x00\x00\x00\x01", iov_len=10}], 3 <unfinished ...>
[pid  5076] <... madvise resumed>)      = 0
[pid  5073] <... writev resumed>)       = 13
[pid  5076] exit(0 <unfinished ...>
[pid  5073] writev(202, [{iov_base="\x04", iov_len=1}, {iov_base="\x03\x0b", iov_len=2}, {iov_base="\x00\xc8\x00\xaa\xaa\xaa\xaa\xaa\x10\x01\x00", iov_len=11}], 3 <unfinished ...>
[pid  5076] <... exit resumed>)         = ?
[pid  5073] <... writev resumed>)       = 14
[pid  5073] writev(202, [{iov_base="\x04", iov_len=1}, {iov_base="\v\v", iov_len=2}, {iov_base="\x00\xc8\x00\x00\x00\x00\x00\x00\x00\x00\x00", iov_len=11}], 3) = 14
[pid  5076] +++ exited with 0 +++
[pid  5073] writev(202, [{iov_base="\x04", iov_len=1}, {iov_base="\x3e\x13", iov_len=2}, {iov_base="\x01\x00\xc9\x00\x01\x00\xaa\xaa\xaa\xaa\xaa\x11\x00\x00\x00\x00\x00\x00\x00", iov_len=19}], 3) = 22
[pid  5073] close(3)                    = 0
[pid  5073] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5073] setsid()                    = 1
[pid  5073] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0
[pid  5073] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0
[pid  5073] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0
[pid  5073] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0
[pid  5073] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0
[pid  5073] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0
[pid  5073] unshare(CLONE_NEWNS)        = 0
[pid  5073] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0
[pid  5073] unshare(CLONE_NEWIPC)       = 0
[pid  5073] unshare(CLONE_NEWCGROUP)    = 0
[pid  5073] unshare(CLONE_NEWUTS)       = 0
[pid  5073] unshare(CLONE_SYSVSEM)      = 0
[pid  5073] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3
[pid  5073] write(3, "16777216", 8)     = 8
[pid  5073] close(3)                    = 0
[pid  5073] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3
[pid  5073] write(3, "536870912", 9)    = 9
[pid  5073] close(3)                    = 0
[pid  5073] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3
[pid  5073] write(3, "1024", 4)         = 4
[pid  5073] close(3)                    = 0
[pid  5073] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3
[pid  5073] write(3, "8192", 4)         = 4
[pid  5073] close(3)                    = 0
[pid  5073] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3
[pid  5073] write(3, "1024", 4)         = 4
[pid  5073] close(3)                    = 0
[pid  5073] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3
[pid  5073] write(3, "1024", 4)         = 4
[pid  5073] close(3)                    = 0
[pid  5073] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3
[pid  5073] write(3, "1024 1048576 500 1024", 21) = 21
[pid  5073] close(3)                    = 0
[pid  5073] getpid()                    = 1
[pid  5073] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PTRACE|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_NICE|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, permitted=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PTRACE|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_NICE|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, inheritable=0}) = 0
[pid  5073] capset({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, permitted=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, inheritable=0}) = 0
[pid  5073] unshare(CLONE_NEWNET)       = 0
[pid  5073] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC) = 3
[pid  5073] write(3, "0 65535", 7)      = 7
[pid  5073] close(3)                    = 0
[pid  5073] mkdir("/dev/binderfs", 0777) = 0
[pid  5073] mount("binder", "/dev/binderfs", "binder", 0, NULL) = 0
[pid  5073] mkdir("./0", 0777)          = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5078 attached
, child_tidptr=0x5555570a9690) = 3
[pid  5078] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5078] chdir("./0")                = 0
[pid  5078] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5078] setpgid(0, 0)               = 0
[pid  5078] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5078] write(3, "1000", 4)         = 4
[pid  5078] close(3)                    = 0
[pid  5078] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5078] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5078] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5078] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5078] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5078] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5079 attached
 <unfinished ...>
[pid  5079] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  5078] <... clone3 resumed> => {parent_tid=[4]}, 88) = 4
[pid  5079] set_robust_list(0x7f8785c4c9a0, 24) = 0
[pid  5079] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5079] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5078] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5078] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5078] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5079] <... futex resumed>)        = 0
[pid  5079] memfd_create("syzkaller", 0) = 3
[pid  5079] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5079] 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) = 16777216
[pid  5079] munmap(0x7f877d82c000, 138412032) = 0
[pid  5079] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5079] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5079] close(3)                    = 0
[pid  5079] mkdir("./file0", 0777)      = 0
[   87.025625][ T5079] loop0: detected capacity change from 0 to 32768
[   87.053433][ T5079] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5079)
[   87.074207][ T5079] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[   87.083562][ T5079] BTRFS info (device loop0): force clearing of disk cache
[   87.091022][ T5079] BTRFS info (device loop0): setting nodatasum
[   87.097297][ T5079] BTRFS info (device loop0): allowing degraded mounts
[   87.104142][ T5079] BTRFS info (device loop0): enabling disk space caching
[   87.111151][ T5079] BTRFS info (device loop0): disk space caching is enabled
[   87.137321][ T5079] BTRFS info (device loop0): enabling ssd optimizations
[   87.144639][ T5079] BTRFS info (device loop0): auto enabling async discard
[   87.154706][ T5079] BTRFS info (device loop0): rebuilding free space tree
[   87.156072][ T1508] cfg80211: failed to load regulatory.db
[pid  5079] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5079] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5079] chdir("./file0")            = 0
[pid  5079] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5079] close(4)                    = 0
[pid  5079] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5078] <... futex resumed>)        = 0
[pid  5079] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5078] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5079] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5079] open("./file0", O_RDONLY)   = 4
[pid  5079] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5078] <... futex resumed>)        = 0
[pid  5078] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid  5078] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5078] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = 0
[   87.188437][ T5079] BTRFS info (device loop0): disabling free space tree
[   87.195640][ T5079] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[   87.206094][ T5079] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[   87.221590][ T5079] BTRFS info (device loop0): checking UUID tree
[pid  5078] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5079] <... futex resumed>)        = 1
[pid  5079] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  5079] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5078] <... futex resumed>)        = 0
[pid  5078] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5078] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5079] <... futex resumed>)        = 1
[pid  5079] 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}} <unfinished ...>
[pid  5078] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  5078] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5078] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5078] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5078] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5078] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 5097 attached
 <unfinished ...>
[pid  5097] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  5078] <... clone3 resumed> => {parent_tid=[5]}, 88) = 5
[pid  5097] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  5078] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5097] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5078] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5097] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable)
[pid  5078] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5097] open("./file0", O_RDONLY <unfinished ...>
[pid  5078] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5097] <... open resumed>)         = 5
[pid  5097] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5078] <... futex resumed>)        = 0
[pid  5097] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5078] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5097] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5078] <... futex resumed>)        = 0
[pid  5078] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[   87.312711][ T5079] BTRFS info (device loop0): balance: start -d -m
[   87.326895][ T5079] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  5097] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  5078] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[   87.411531][ T5079] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5097] <... ioctl resumed>)        = 0
[pid  5097] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5097] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5079] <... ioctl resumed>)        = -1 ENOSPC (No space left on device)
[pid  5079] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5078] close(3 <unfinished ...>
[pid  5079] <... futex resumed>)        = 0
[pid  5078] <... close resumed>)        = 0
[pid  5079] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5078] close(4)                    = 0
[pid  5078] close(5)                    = 0
[pid  5078] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5078] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5078] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5078] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5078] close(10)                   = -1 EBADF (Bad file descriptor)
[   87.539785][ T5079] BTRFS info (device loop0): 1 enospc errors during balance
[   87.547261][ T5079] BTRFS info (device loop0): balance: ended with status: -28
[pid  5078] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5078] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5078] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5078] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5078] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5078] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5078] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5078] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5078] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5078] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5078] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5078] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5078] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5078] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5078] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5078] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5078] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5078] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5078] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5078] exit_group(0 <unfinished ...>
[pid  5097] <... futex resumed>)        = ?
[pid  5079] <... futex resumed>)        = ?
[pid  5097] +++ exited with 0 +++
[pid  5079] +++ exited with 0 +++
[pid  5078] <... exit_group resumed>)   = ?
[pid  5078] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=40 /* 0.40 s */} ---
[pid  5073] umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./0/binderfs")      = 0
[pid  5073] umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./0/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./0/file0")          = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./0")                = 0
[pid  5073] mkdir("./1", 0777)          = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5099 attached
, child_tidptr=0x5555570a9690) = 6
[pid  5099] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5099] chdir("./1")                = 0
[pid  5099] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5099] setpgid(0, 0)               = 0
[pid  5099] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5099] write(3, "1000", 4)         = 4
[pid  5099] close(3)                    = 0
[pid  5099] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5099] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5099] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5099] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5099] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5099] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5100 attached
 <unfinished ...>
[pid  5100] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  5099] <... clone3 resumed> => {parent_tid=[7]}, 88) = 7
[pid  5100] <... rseq resumed>)         = 0
[pid  5099] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5100] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5099] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5100] <... set_robust_list resumed>) = 0
[pid  5100] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5099] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5100] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5099] <... futex resumed>)        = 0
[pid  5100] memfd_create("syzkaller", 0 <unfinished ...>
[pid  5099] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5100] <... memfd_create resumed>) = 3
[pid  5100] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5100] 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) = 16777216
[pid  5100] munmap(0x7f877d82c000, 138412032) = 0
[pid  5100] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5100] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5100] close(3)                    = 0
[pid  5100] mkdir("./file0", 0777)      = 0
[   88.275268][ T5100] loop0: detected capacity change from 0 to 32768
[   88.290647][ T5100] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5100)
[   88.308040][ T5100] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[   88.317283][ T5100] BTRFS info (device loop0): force clearing of disk cache
[   88.324439][ T5100] BTRFS info (device loop0): setting nodatasum
[   88.330602][ T5100] BTRFS info (device loop0): allowing degraded mounts
[   88.337410][ T5100] BTRFS info (device loop0): enabling disk space caching
[   88.344497][ T5100] BTRFS info (device loop0): disk space caching is enabled
[   88.365692][ T5100] BTRFS info (device loop0): enabling ssd optimizations
[   88.372669][ T5100] BTRFS info (device loop0): auto enabling async discard
[   88.381354][ T5100] BTRFS info (device loop0): rebuilding free space tree
[   88.396194][ T5100] BTRFS info (device loop0): disabling free space tree
[   88.403081][ T5100] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[   88.412809][ T5100] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  5100] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5100] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5100] chdir("./file0")            = 0
[pid  5100] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5100] close(4)                    = 0
[pid  5100] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5100] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5099] <... futex resumed>)        = 0
[pid  5099] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5100] <... futex resumed>)        = 0
[pid  5099] <... futex resumed>)        = 1
[pid  5100] open("./file0", O_RDONLY <unfinished ...>
[pid  5099] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5100] <... open resumed>)         = 4
[pid  5100] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5099] <... futex resumed>)        = 0
[   88.424529][ T5074] Bluetooth: hci0: command 0x0409 tx timeout
[   88.427990][ T5100] BTRFS info (device loop0): checking UUID tree
[pid  5100] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5099] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5100] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5099] <... futex resumed>)        = 0
[pid  5100] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  5099] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5100] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5099] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5100] <... futex resumed>)        = 0
[pid  5100] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5099] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5100] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5099] <... futex resumed>)        = 0
[pid  5100] 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}} <unfinished ...>
[   88.500701][ T5100] BTRFS info (device loop0): balance: start -d -m
[   88.512118][ T5100] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  5099] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5099] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5099] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5099] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5099] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5099] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 5118 attached
 => {parent_tid=[8]}, 88) = 8
[pid  5118] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  5099] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5118] <... rseq resumed>)         = 0
[pid  5118] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  5099] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5118] <... set_robust_list resumed>) = 0
[pid  5099] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5118] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5099] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5118] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5118] open("./file0", O_RDONLY)   = 5
[pid  5118] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5099] <... futex resumed>)        = 0
[pid  5118] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5099] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5118] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5099] <... futex resumed>)        = 0
[pid  5118] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[   88.541189][ T5100] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5099] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5118] <... ioctl resumed>)        = 0
[pid  5118] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[   88.719375][ T5100] BTRFS info (device loop0): found 9 extents, stage: move data extents
[   88.745211][ T5100] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  5118] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5100] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5100] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5100] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5099] close(3)                    = 0
[pid  5099] close(4)                    = 0
[pid  5099] close(5)                    = 0
[pid  5099] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5099] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5099] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5099] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5099] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5099] close(11)                   = -1 EBADF (Bad file descriptor)
[   88.765797][ T5100] BTRFS info (device loop0): balance: ended with status: 0
[pid  5099] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5099] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5099] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5099] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5099] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5099] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5099] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5099] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5099] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5099] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5099] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5099] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5099] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5099] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5099] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5099] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5099] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5099] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5099] exit_group(0 <unfinished ...>
[pid  5100] <... futex resumed>)        = ?
[pid  5099] <... exit_group resumed>)   = ?
[pid  5118] <... futex resumed>)        = ?
[pid  5118] +++ exited with 0 +++
[pid  5100] +++ exited with 0 +++
[pid  5099] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=6, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=46 /* 0.46 s */} ---
[pid  5073] umount2("./1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./1/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./1/binderfs")      = 0
[pid  5073] umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./1/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./1/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./1/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./1/file0")          = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./1")                = 0
[pid  5073] mkdir("./2", 0777)          = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5119 attached
 <unfinished ...>
[pid  5119] set_robust_list(0x5555570a96a0, 24 <unfinished ...>
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 9
[pid  5119] <... set_robust_list resumed>) = 0
[pid  5119] chdir("./2")                = 0
[pid  5119] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5119] setpgid(0, 0)               = 0
[pid  5119] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5119] write(3, "1000", 4)         = 4
[pid  5119] close(3)                    = 0
[pid  5119] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5119] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5119] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5119] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5119] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5119] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5120 attached
 <unfinished ...>
[pid  5120] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  5120] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5119] <... clone3 resumed> => {parent_tid=[10]}, 88) = 10
[pid  5120] <... set_robust_list resumed>) = 0
[pid  5119] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5120] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5119] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5120] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5119] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5120] memfd_create("syzkaller", 0 <unfinished ...>
[pid  5119] <... futex resumed>)        = 0
[pid  5119] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5120] <... memfd_create resumed>) = 3
[pid  5120] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5120] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216
[pid  5120] munmap(0x7f877d82c000, 138412032) = 0
[pid  5120] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5120] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5120] close(3)                    = 0
[pid  5120] mkdir("./file0", 0777)      = 0
[   89.341375][ T5120] loop0: detected capacity change from 0 to 32768
[   89.356297][ T5120] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5120)
[   89.372975][ T5120] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[   89.382263][ T5120] BTRFS info (device loop0): force clearing of disk cache
[   89.389507][ T5120] BTRFS info (device loop0): setting nodatasum
[   89.395702][ T5120] BTRFS info (device loop0): allowing degraded mounts
[   89.402451][ T5120] BTRFS info (device loop0): enabling disk space caching
[   89.409515][ T5120] BTRFS info (device loop0): disk space caching is enabled
[   89.430989][ T5120] BTRFS info (device loop0): enabling ssd optimizations
[   89.438106][ T5120] BTRFS info (device loop0): auto enabling async discard
[   89.446513][ T5120] BTRFS info (device loop0): rebuilding free space tree
[   89.458592][ T5120] BTRFS info (device loop0): disabling free space tree
[   89.465562][ T5120] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[   89.475395][ T5120] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  5120] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5120] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5120] chdir("./file0")            = 0
[pid  5120] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5120] close(4)                    = 0
[pid  5120] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5119] <... futex resumed>)        = 0
[pid  5119] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5119] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5120] open("./file0", O_RDONLY)   = 4
[pid  5120] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5119] <... futex resumed>)        = 0
[pid  5119] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5119] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5120] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  5120] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5119] <... futex resumed>)        = 0
[pid  5119] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[   89.489204][ T5120] BTRFS info (device loop0): checking UUID tree
[pid  5119] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5120] 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}} <unfinished ...>
[pid  5119] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  5119] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  5119] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5119] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5119] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5119] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5119] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 5138 attached
 => {parent_tid=[11]}, 88) = 11
[   89.538290][ T5120] BTRFS info (device loop0): balance: start -d -m
[   89.548049][ T5120] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  5119] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5138] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  5119] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5138] <... rseq resumed>)         = 0
[pid  5138] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  5119] <... futex resumed>)        = 0
[pid  5138] <... set_robust_list resumed>) = 0
[pid  5119] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5138] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5138] open("./file0", O_RDONLY)   = 5
[pid  5138] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5119] <... futex resumed>)        = 0
[pid  5119] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5138] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[   89.580434][ T5120] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5119] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5138] <... ioctl resumed>)        = 0
[pid  5138] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[   89.747094][ T5120] BTRFS info (device loop0): found 8 extents, stage: move data extents
[   89.771735][ T5120] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  5138] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5120] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5120] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5119] close(3 <unfinished ...>
[pid  5120] <... futex resumed>)        = 0
[pid  5120] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5119] <... close resumed>)        = 0
[pid  5119] close(4)                    = 0
[pid  5119] close(5)                    = 0
[pid  5119] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5119] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5119] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5119] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5119] close(10)                   = -1 EBADF (Bad file descriptor)
[   89.790571][ T5120] BTRFS info (device loop0): balance: ended with status: 0
[pid  5119] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5119] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5119] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5119] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5119] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5119] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5119] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5119] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5119] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5119] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5119] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5119] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5119] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5119] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5119] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5119] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5119] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5119] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5119] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5119] exit_group(0)               = ?
[pid  5138] <... futex resumed>)        = ?
[pid  5120] <... futex resumed>)        = ?
[pid  5138] +++ exited with 0 +++
[pid  5120] +++ exited with 0 +++
[pid  5119] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=9, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=42 /* 0.42 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./2/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./2/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./2/binderfs")      = 0
[pid  5073] umount2("./2/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./2/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./2/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./2/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./2/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./2/file0")          = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./2")                = 0
[pid  5073] mkdir("./3", 0777)          = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5139 attached
 <unfinished ...>
[pid  5139] set_robust_list(0x5555570a96a0, 24 <unfinished ...>
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 12
[pid  5139] <... set_robust_list resumed>) = 0
[pid  5139] chdir("./3")                = 0
[pid  5139] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5139] setpgid(0, 0)               = 0
[pid  5139] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5139] write(3, "1000", 4)         = 4
[pid  5139] close(3)                    = 0
[pid  5139] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5139] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5139] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5139] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5139] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5139] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5140 attached
 <unfinished ...>
[pid  5140] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  5139] <... clone3 resumed> => {parent_tid=[13]}, 88) = 13
[pid  5140] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5139] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5140] <... set_robust_list resumed>) = 0
[pid  5139] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5140] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5139] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5140] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5139] <... futex resumed>)        = 0
[pid  5140] memfd_create("syzkaller", 0 <unfinished ...>
[pid  5139] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5140] <... memfd_create resumed>) = 3
[pid  5140] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5140] 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) = 16777216
[pid  5140] munmap(0x7f877d82c000, 138412032) = 0
[pid  5140] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5140] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5140] close(3)                    = 0
[pid  5140] mkdir("./file0", 0777)      = 0
[   90.401161][ T5140] loop0: detected capacity change from 0 to 32768
[   90.425499][ T5140] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5140)
[   90.442725][ T5140] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[   90.452179][ T5140] BTRFS info (device loop0): force clearing of disk cache
[   90.459426][ T5140] BTRFS info (device loop0): setting nodatasum
[   90.465750][ T5140] BTRFS info (device loop0): allowing degraded mounts
[   90.472719][ T5140] BTRFS info (device loop0): enabling disk space caching
[   90.480133][ T5140] BTRFS info (device loop0): disk space caching is enabled
[   90.503300][ T5140] BTRFS info (device loop0): enabling ssd optimizations
[   90.510393][ T5140] BTRFS info (device loop0): auto enabling async discard
[   90.515506][ T5074] Bluetooth: hci0: command 0x041b tx timeout
[   90.525061][ T5140] BTRFS info (device loop0): rebuilding free space tree
[   90.536971][ T5140] BTRFS info (device loop0): disabling free space tree
[   90.543858][ T5140] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  5140] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5140] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5140] chdir("./file0")            = 0
[pid  5140] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5140] close(4)                    = 0
[pid  5140] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5139] <... futex resumed>)        = 0
[pid  5140] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5139] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5140] <... futex resumed>)        = 0
[pid  5139] <... futex resumed>)        = 1
[   90.553590][ T5140] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[   90.566856][ T5140] BTRFS info (device loop0): checking UUID tree
[pid  5140] open("./file0", O_RDONLY)   = 4
[pid  5139] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5140] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5139] <... futex resumed>)        = 0
[pid  5139] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5140] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  5139] <... futex resumed>)        = 0
[pid  5140] <... ioctl resumed>)        = 0
[pid  5139] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5140] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5140] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5139] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5139] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5140] <... futex resumed>)        = 0
[pid  5139] <... futex resumed>)        = 1
[pid  5140] 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}} <unfinished ...>
[pid  5139] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5139] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5139] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5139] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5139] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5139] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 5158 attached
 => {parent_tid=[14]}, 88) = 14
[pid  5158] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  5158] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  5139] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5158] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5139] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5158] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5139] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5158] <... futex resumed>)        = 0
[pid  5139] <... futex resumed>)        = 1
[pid  5158] open("./file0", O_RDONLY)   = 5
[pid  5139] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5158] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5139] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5158] <... futex resumed>)        = 0
[pid  5139] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5158] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  5139] <... futex resumed>)        = 0
[   90.664856][ T5140] BTRFS info (device loop0): balance: start -d -m
[   90.674235][ T5140] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[   90.698547][ T5140] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5139] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5158] <... ioctl resumed>)        = 0
[pid  5158] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[   90.800096][ T5140] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  5158] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5140] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5140] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5139] close(3 <unfinished ...>
[pid  5140] <... futex resumed>)        = 0
[pid  5139] <... close resumed>)        = 0
[pid  5140] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5139] close(4)                    = 0
[pid  5139] close(5)                    = 0
[pid  5139] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5139] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5139] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5139] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5139] close(10)                   = -1 EBADF (Bad file descriptor)
[   90.869813][ T5140] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[   90.889077][ T5140] BTRFS info (device loop0): balance: ended with status: 0
[pid  5139] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5139] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5139] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5139] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5139] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5139] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5139] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5139] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5139] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5139] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5139] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5139] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5139] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5139] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5139] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5139] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5139] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5139] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5139] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5139] exit_group(0 <unfinished ...>
[pid  5158] <... futex resumed>)        = ?
[pid  5140] <... futex resumed>)        = ?
[pid  5139] <... exit_group resumed>)   = ?
[pid  5140] +++ exited with 0 +++
[pid  5158] +++ exited with 0 +++
[pid  5139] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12, si_uid=0, si_status=0, si_utime=0, si_stime=44 /* 0.44 s */} ---
[pid  5073] umount2("./3", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./3", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./3/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./3/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./3/binderfs")      = 0
[pid  5073] umount2("./3/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./3/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./3/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./3/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./3/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./3/file0")          = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./3")                = 0
[pid  5073] mkdir("./4", 0777)          = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5159 attached
, child_tidptr=0x5555570a9690) = 15
[pid  5159] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5159] chdir("./4")                = 0
[pid  5159] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5159] setpgid(0, 0)               = 0
[pid  5159] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5159] write(3, "1000", 4)         = 4
[pid  5159] close(3)                    = 0
[pid  5159] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5159] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5159] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5159] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5159] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5159] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5160 attached
 <unfinished ...>
[pid  5160] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  5159] <... clone3 resumed> => {parent_tid=[16]}, 88) = 16
[pid  5160] <... rseq resumed>)         = 0
[pid  5160] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5159] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5160] <... set_robust_list resumed>) = 0
[pid  5159] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5160] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5159] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5160] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5159] <... futex resumed>)        = 0
[pid  5159] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5160] memfd_create("syzkaller", 0) = 3
[pid  5160] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5160] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216
[pid  5160] munmap(0x7f877d82c000, 138412032) = 0
[pid  5160] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5160] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5160] close(3)                    = 0
[pid  5160] mkdir("./file0", 0777)      = 0
[   91.510741][ T5160] loop0: detected capacity change from 0 to 32768
[   91.535171][ T5160] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5160)
[   91.552439][ T5160] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[   91.561785][ T5160] BTRFS info (device loop0): force clearing of disk cache
[   91.568971][ T5160] BTRFS info (device loop0): setting nodatasum
[   91.575195][ T5160] BTRFS info (device loop0): allowing degraded mounts
[   91.581970][ T5160] BTRFS info (device loop0): enabling disk space caching
[   91.589108][ T5160] BTRFS info (device loop0): disk space caching is enabled
[   91.610604][ T5160] BTRFS info (device loop0): enabling ssd optimizations
[   91.617658][ T5160] BTRFS info (device loop0): auto enabling async discard
[   91.625823][ T5160] BTRFS info (device loop0): rebuilding free space tree
[   91.638007][ T5160] BTRFS info (device loop0): disabling free space tree
[   91.645113][ T5160] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  5160] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5160] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5160] chdir("./file0")            = 0
[pid  5160] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5160] close(4)                    = 0
[   91.654804][ T5160] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[   91.668471][ T5160] BTRFS info (device loop0): checking UUID tree
[pid  5160] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5159] <... futex resumed>)        = 0
[pid  5160] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5159] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5160] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5159] <... futex resumed>)        = 0
[pid  5160] open("./file0", O_RDONLY <unfinished ...>
[pid  5159] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5160] <... open resumed>)         = 4
[pid  5160] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5159] <... futex resumed>)        = 0
[pid  5159] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5160] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  5159] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5160] <... ioctl resumed>)        = 0
[pid  5160] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5159] <... futex resumed>)        = 0
[pid  5159] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5160] 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}} <unfinished ...>
[   91.733535][ T5160] BTRFS info (device loop0): balance: start -d -m
[   91.742256][ T5160] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  5159] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5159] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5159] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5159] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5159] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5159] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 5178 attached
 => {parent_tid=[17]}, 88) = 17
[pid  5178] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  5159] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5178] <... rseq resumed>)         = 0
[pid  5159] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5159] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5159] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5178] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  5178] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5178] open("./file0", O_RDONLY)   = 5
[pid  5178] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5159] <... futex resumed>)        = 0
[pid  5178] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5159] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5178] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5159] <... futex resumed>)        = 0
[pid  5159] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[   91.776458][ T5160] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5178] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  5159] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  5159] close(3)                    = 0
[pid  5159] close(4)                    = 0
[pid  5159] close(5)                    = 0
[pid  5159] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5159] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5159] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5159] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5159] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5159] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5159] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5159] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5159] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5159] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5159] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5159] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5159] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5159] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5159] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5159] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5159] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5159] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5159] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5159] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5159] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5159] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5159] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5159] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5159] exit_group(0)               = ?
[pid  5178] <... ioctl resumed>)        = ?
[pid  5178] +++ exited with 0 +++
[pid  5160] <... ioctl resumed> <unfinished ...>) = ?
[pid  5160] +++ exited with 0 +++
[pid  5159] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=41 /* 0.41 s */} ---
[pid  5073] umount2("./4", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./4", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[   92.052529][ T5178] BTRFS warning (device loop0): failed to trim 1 block group(s), last error -512
[   92.068027][ T5160] BTRFS info (device loop0): balance: canceled
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./4/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./4/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./4/binderfs")      = 0
[pid  5073] umount2("./4/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./4/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./4/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./4/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./4/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./4/file0")          = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./4")                = 0
[pid  5073] mkdir("./5", 0777)          = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5179 attached
, child_tidptr=0x5555570a9690) = 18
[pid  5179] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5179] chdir("./5")                = 0
[pid  5179] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5179] setpgid(0, 0)               = 0
[pid  5179] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5179] write(3, "1000", 4)         = 4
[pid  5179] close(3)                    = 0
[pid  5179] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5179] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5179] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5179] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5179] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5179] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5180 attached
 <unfinished ...>
[pid  5180] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  5179] <... clone3 resumed> => {parent_tid=[19]}, 88) = 19
[pid  5180] <... rseq resumed>)         = 0
[pid  5179] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5180] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5179] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5180] <... set_robust_list resumed>) = 0
[pid  5180] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5179] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5180] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5179] <... futex resumed>)        = 0
[pid  5180] memfd_create("syzkaller", 0 <unfinished ...>
[pid  5179] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5180] <... memfd_create resumed>) = 3
[pid  5180] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5180] 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) = 16777216
[pid  5180] munmap(0x7f877d82c000, 138412032) = 0
[pid  5180] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5180] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5180] close(3)                    = 0
[pid  5180] mkdir("./file0", 0777)      = 0
[   92.589871][ T5180] loop0: detected capacity change from 0 to 32768
[   92.596504][ T5074] Bluetooth: hci0: command 0x040f tx timeout
[   92.625156][ T5180] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5180)
[   92.641627][ T5180] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[   92.650893][ T5180] BTRFS info (device loop0): force clearing of disk cache
[   92.658025][ T5180] BTRFS info (device loop0): setting nodatasum
[   92.664244][ T5180] BTRFS info (device loop0): allowing degraded mounts
[   92.671023][ T5180] BTRFS info (device loop0): enabling disk space caching
[   92.678123][ T5180] BTRFS info (device loop0): disk space caching is enabled
[   92.700246][ T5180] BTRFS info (device loop0): enabling ssd optimizations
[   92.707273][ T5180] BTRFS info (device loop0): auto enabling async discard
[   92.715549][ T5180] BTRFS info (device loop0): rebuilding free space tree
[   92.728305][ T5180] BTRFS info (device loop0): disabling free space tree
[   92.735227][ T5180] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  5180] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5180] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5180] chdir("./file0")            = 0
[pid  5180] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5180] close(4)                    = 0
[pid  5180] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5179] <... futex resumed>)        = 0
[pid  5179] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5180] <... futex resumed>)        = 1
[pid  5179] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[   92.744920][ T5180] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[   92.757838][ T5180] BTRFS info (device loop0): checking UUID tree
[pid  5180] open("./file0", O_RDONLY)   = 4
[pid  5180] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5179] <... futex resumed>)        = 0
[pid  5179] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5180] <... futex resumed>)        = 1
[pid  5179] <... futex resumed>)        = 0
[pid  5180] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  5179] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5180] <... ioctl resumed>)        = 0
[pid  5180] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5180] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5179] <... futex resumed>)        = 0
[pid  5179] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5180] <... futex resumed>)        = 0
[pid  5179] <... futex resumed>)        = 1
[pid  5180] 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}} <unfinished ...>
[   92.850563][ T5180] BTRFS info (device loop0): balance: start -d -m
[   92.861382][ T5180] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  5179] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5179] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5179] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5179] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5179] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5179] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[20]}, 88) = 20
[pid  5179] rt_sigprocmask(SIG_SETMASK, [], ./strace-static-x86_64: Process 5198 attached
NULL, 8) = 0
[pid  5198] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  5179] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5198] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  5179] <... futex resumed>)        = 0
[pid  5198] <... set_robust_list resumed>) = 0
[pid  5179] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5198] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5198] open("./file0", O_RDONLY)   = 5
[pid  5198] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5198] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5179] <... futex resumed>)        = 0
[pid  5179] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5198] <... futex resumed>)        = 0
[pid  5179] <... futex resumed>)        = 1
[pid  5198] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[   92.891016][ T5180] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5179] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5198] <... ioctl resumed>)        = 0
[pid  5198] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[   93.044159][ T5180] BTRFS info (device loop0): found 9 extents, stage: move data extents
[   93.068647][ T5180] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  5198] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5180] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5180] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5180] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5179] close(3)                    = 0
[pid  5179] close(4)                    = 0
[pid  5179] close(5)                    = 0
[   93.088366][ T5180] BTRFS info (device loop0): balance: ended with status: 0
[pid  5179] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5179] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5179] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5179] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5179] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5179] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5179] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5179] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5179] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5179] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5179] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5179] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5179] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5179] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5179] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5179] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5179] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5179] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5179] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5179] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5179] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5179] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5179] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5179] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5179] exit_group(0 <unfinished ...>
[pid  5198] <... futex resumed>)        = ?
[pid  5180] <... futex resumed>)        = ?
[pid  5179] <... exit_group resumed>)   = ?
[pid  5198] +++ exited with 0 +++
[pid  5180] +++ exited with 0 +++
[pid  5179] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=40 /* 0.40 s */} ---
[pid  5073] umount2("./5", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./5", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./5/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./5/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./5/binderfs")      = 0
[pid  5073] umount2("./5/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./5/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./5/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./5/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./5/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./5/file0")          = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./5")                = 0
[pid  5073] mkdir("./6", 0777)          = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5199 attached
 <unfinished ...>
[pid  5199] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 21
[pid  5199] chdir("./6")                = 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(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5199] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5199] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5199] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5199] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5200 attached
 <unfinished ...>
[pid  5200] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  5199] <... clone3 resumed> => {parent_tid=[22]}, 88) = 22
[pid  5200] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5199] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5200] <... set_robust_list resumed>) = 0
[pid  5200] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5199] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5200] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5199] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5200] memfd_create("syzkaller", 0 <unfinished ...>
[pid  5199] <... futex resumed>)        = 0
[pid  5200] <... memfd_create resumed>) = 3
[pid  5199] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5200] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5200] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216
[pid  5200] munmap(0x7f877d82c000, 138412032) = 0
[pid  5200] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5200] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5200] close(3)                    = 0
[pid  5200] mkdir("./file0", 0777)      = 0
[   93.780966][ T5200] loop0: detected capacity change from 0 to 32768
[   93.805375][ T5200] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5200)
[   93.821986][ T5200] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[   93.831304][ T5200] BTRFS info (device loop0): force clearing of disk cache
[   93.838451][ T5200] BTRFS info (device loop0): setting nodatasum
[   93.844665][ T5200] BTRFS info (device loop0): allowing degraded mounts
[   93.851432][ T5200] BTRFS info (device loop0): enabling disk space caching
[   93.858483][ T5200] BTRFS info (device loop0): disk space caching is enabled
[   93.880106][ T5200] BTRFS info (device loop0): enabling ssd optimizations
[   93.887099][ T5200] BTRFS info (device loop0): auto enabling async discard
[   93.896257][ T5200] BTRFS info (device loop0): rebuilding free space tree
[   93.908594][ T5200] BTRFS info (device loop0): disabling free space tree
[   93.915735][ T5200] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  5200] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5200] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5200] chdir("./file0")            = 0
[pid  5200] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5200] close(4)                    = 0
[pid  5200] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5199] <... futex resumed>)        = 0
[pid  5199] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5200] open("./file0", O_RDONLY <unfinished ...>
[pid  5199] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5200] <... open resumed>)         = 4
[pid  5200] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5199] <... futex resumed>)        = 0
[pid  5200] <... futex resumed>)        = 1
[pid  5199] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5199] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5200] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[   93.925537][ T5200] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[   93.939084][ T5200] BTRFS info (device loop0): checking UUID tree
[pid  5200] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5199] <... futex resumed>)        = 0
[pid  5200] 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}} <unfinished ...>
[pid  5199] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5199] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5199] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5199] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5199] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5199] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5199] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[23]}, 88) = 23
[pid  5199] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5199] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5199] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5218 attached
 <unfinished ...>
[pid  5218] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  5218] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  5218] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5218] open("./file0", O_RDONLY)   = 5
[pid  5218] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5199] <... futex resumed>)        = 0
[pid  5199] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5218] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  5199] <... futex resumed>)        = 0
[   94.016295][ T5200] BTRFS info (device loop0): balance: start -d -m
[   94.024629][ T5200] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[   94.051384][ T5200] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5199] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[   94.154988][ T5200] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  5218] <... ioctl resumed>)        = 0
[pid  5218] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5218] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5200] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5200] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5200] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5199] close(3)                    = 0
[pid  5199] close(4)                    = 0
[pid  5199] close(5)                    = 0
[pid  5199] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5199] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5199] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5199] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5199] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5199] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5199] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5199] close(13)                   = -1 EBADF (Bad file descriptor)
[   94.227002][ T5200] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[   94.250505][ T5200] BTRFS info (device loop0): balance: ended with status: 0
[pid  5199] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5199] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5199] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5199] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5199] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5199] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5199] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5199] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5199] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5199] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5199] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5199] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5199] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5199] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5199] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5199] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5199] exit_group(0)               = ?
[pid  5218] <... futex resumed>)        = ?
[pid  5200] <... futex resumed>)        = ?
[pid  5218] +++ exited with 0 +++
[pid  5200] +++ exited with 0 +++
[pid  5199] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21, si_uid=0, si_status=0, si_utime=0, si_stime=42 /* 0.42 s */} ---
[pid  5073] umount2("./6", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./6", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./6/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./6/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./6/binderfs")      = 0
[pid  5073] umount2("./6/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./6/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./6/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./6/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./6/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./6/file0")          = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./6")                = 0
[pid  5073] mkdir("./7", 0777)          = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5219 attached
 <unfinished ...>
[pid  5219] set_robust_list(0x5555570a96a0, 24 <unfinished ...>
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 24
[pid  5219] <... set_robust_list resumed>) = 0
[pid  5219] chdir("./7")                = 0
[pid  5219] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5219] setpgid(0, 0)               = 0
[pid  5219] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5219] write(3, "1000", 4)         = 4
[pid  5219] close(3)                    = 0
[pid  5219] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5219] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5219] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5219] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5219] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5219] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5220 attached
 <unfinished ...>
[pid  5220] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  5219] <... clone3 resumed> => {parent_tid=[25]}, 88) = 25
[pid  5220] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5219] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5220] <... set_robust_list resumed>) = 0
[pid  5219] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5220] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5219] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5220] memfd_create("syzkaller", 0 <unfinished ...>
[pid  5219] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5220] <... memfd_create resumed>) = 3
[pid  5220] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[   94.673998][ T5074] Bluetooth: hci0: command 0x0419 tx timeout
[pid  5220] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216
[pid  5220] munmap(0x7f877d82c000, 138412032) = 0
[pid  5220] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5220] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5220] close(3)                    = 0
[pid  5220] mkdir("./file0", 0777)      = 0
[   94.921088][ T5220] loop0: detected capacity change from 0 to 32768
[   94.935284][ T5220] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5220)
[   94.951857][ T5220] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[   94.961158][ T5220] BTRFS info (device loop0): force clearing of disk cache
[   94.968297][ T5220] BTRFS info (device loop0): setting nodatasum
[   94.974494][ T5220] BTRFS info (device loop0): allowing degraded mounts
[   94.981260][ T5220] BTRFS info (device loop0): enabling disk space caching
[   94.988410][ T5220] BTRFS info (device loop0): disk space caching is enabled
[   95.011271][ T5220] BTRFS info (device loop0): enabling ssd optimizations
[   95.018251][ T5220] BTRFS info (device loop0): auto enabling async discard
[   95.026290][ T5220] BTRFS info (device loop0): rebuilding free space tree
[   95.038412][ T5220] BTRFS info (device loop0): disabling free space tree
[   95.045732][ T5220] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[   95.055414][ T5220] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  5220] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5220] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5220] chdir("./file0")            = 0
[pid  5220] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5220] close(4)                    = 0
[pid  5220] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5219] <... futex resumed>)        = 0
[pid  5220] <... futex resumed>)        = 1
[pid  5219] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5220] open("./file0", O_RDONLY <unfinished ...>
[pid  5219] <... futex resumed>)        = 0
[pid  5219] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5220] <... open resumed>)         = 4
[   95.068656][ T5220] BTRFS info (device loop0): checking UUID tree
[pid  5220] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5220] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5219] <... futex resumed>)        = 0
[pid  5219] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5219] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5220] <... futex resumed>)        = 0
[pid  5220] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  5220] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5219] <... futex resumed>)        = 0
[pid  5219] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5219] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[   95.136730][ T5220] BTRFS info (device loop0): balance: start -d -m
[   95.147671][ T5220] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  5220] 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}} <unfinished ...>
[pid  5219] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  5219] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5219] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5219] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5219] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5219] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 5238 attached
 <unfinished ...>
[pid  5238] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  5238] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  5238] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5238] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5219] <... clone3 resumed> => {parent_tid=[26]}, 88) = 26
[pid  5219] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5219] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5238] <... futex resumed>)        = 0
[pid  5219] <... futex resumed>)        = 1
[pid  5238] open("./file0", O_RDONLY <unfinished ...>
[pid  5219] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5238] <... open resumed>)         = 5
[pid  5238] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5219] <... futex resumed>)        = 0
[pid  5238] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5219] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5238] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5219] <... futex resumed>)        = 0
[pid  5238] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[   95.178203][ T5220] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5219] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5238] <... ioctl resumed>)        = 0
[pid  5238] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[   95.345861][ T5220] BTRFS info (device loop0): found 9 extents, stage: move data extents
[   95.370183][ T5220] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  5238] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5220] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5220] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5220] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5219] close(3)                    = 0
[pid  5219] close(4)                    = 0
[pid  5219] close(5)                    = 0
[   95.390192][ T5220] BTRFS info (device loop0): balance: ended with status: 0
[pid  5219] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5219] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5219] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5219] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5219] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5219] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5219] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5219] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5219] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5219] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5219] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5219] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5219] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5219] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5219] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5219] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5219] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5219] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5219] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5219] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5219] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5219] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5219] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5219] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5219] exit_group(0 <unfinished ...>
[pid  5238] <... futex resumed>)        = ?
[pid  5220] <... futex resumed>)        = ?
[pid  5219] <... exit_group resumed>)   = ?
[pid  5238] +++ exited with 0 +++
[pid  5220] +++ exited with 0 +++
[pid  5219] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=24, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=46 /* 0.46 s */} ---
[pid  5073] umount2("./7", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./7", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./7/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./7/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./7/binderfs")      = 0
[pid  5073] umount2("./7/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./7/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./7/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./7/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./7/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./7/file0")          = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./7")                = 0
[pid  5073] mkdir("./8", 0777)          = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5239 attached
, child_tidptr=0x5555570a9690) = 27
[pid  5239] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5239] chdir("./8")                = 0
[pid  5239] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5239] setpgid(0, 0)               = 0
[pid  5239] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5239] write(3, "1000", 4)         = 4
[pid  5239] close(3)                    = 0
[pid  5239] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5239] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5239] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5239] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5239] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5239] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5240 attached
 <unfinished ...>
[pid  5240] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  5239] <... clone3 resumed> => {parent_tid=[28]}, 88) = 28
[pid  5240] <... rseq resumed>)         = 0
[pid  5239] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5240] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5239] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5240] <... set_robust_list resumed>) = 0
[pid  5239] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5240] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5239] <... futex resumed>)        = 0
[pid  5240] memfd_create("syzkaller", 0 <unfinished ...>
[pid  5239] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5240] <... memfd_create resumed>) = 3
[pid  5240] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5240] 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) = 16777216
[pid  5240] munmap(0x7f877d82c000, 138412032) = 0
[pid  5240] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5240] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5240] close(3)                    = 0
[pid  5240] mkdir("./file0", 0777)      = 0
[   96.010774][ T5240] loop0: detected capacity change from 0 to 32768
[   96.035026][ T5240] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5240)
[   96.050825][ T5240] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[   96.060271][ T5240] BTRFS info (device loop0): force clearing of disk cache
[   96.067450][ T5240] BTRFS info (device loop0): setting nodatasum
[   96.073784][ T5240] BTRFS info (device loop0): allowing degraded mounts
[   96.080877][ T5240] BTRFS info (device loop0): enabling disk space caching
[   96.087947][ T5240] BTRFS info (device loop0): disk space caching is enabled
[   96.109438][ T5240] BTRFS info (device loop0): enabling ssd optimizations
[   96.116434][ T5240] BTRFS info (device loop0): auto enabling async discard
[   96.125316][ T5240] BTRFS info (device loop0): rebuilding free space tree
[   96.137275][ T5240] BTRFS info (device loop0): disabling free space tree
[   96.144247][ T5240] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  5240] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5240] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5240] chdir("./file0")            = 0
[pid  5240] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5240] close(4)                    = 0
[pid  5240] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5239] <... futex resumed>)        = 0
[pid  5240] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5239] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5240] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5239] <... futex resumed>)        = 0
[pid  5240] open("./file0", O_RDONLY <unfinished ...>
[pid  5239] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5240] <... open resumed>)         = 4
[   96.154228][ T5240] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[   96.168218][ T5240] BTRFS info (device loop0): checking UUID tree
[pid  5240] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5239] <... futex resumed>)        = 0
[pid  5239] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5240] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  5239] <... futex resumed>)        = 0
[pid  5240] <... ioctl resumed>)        = 0
[pid  5239] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5240] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5239] <... futex resumed>)        = 0
[pid  5240] 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}} <unfinished ...>
[pid  5239] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5239] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5239] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5239] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5239] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5239] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5239] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 5258 attached
 <unfinished ...>
[pid  5258] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  5258] set_robust_list(0x7f8785c2b9a0, 24) = 0
[   96.235292][ T5240] BTRFS info (device loop0): balance: start -d -m
[   96.245807][ T5240] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[   96.271910][ T5240] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5239] <... clone3 resumed> => {parent_tid=[29]}, 88) = 29
[pid  5239] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5258] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5239] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5239] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5258] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5258] open("./file0", O_RDONLY)   = 5
[pid  5258] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5258] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5239] <... futex resumed>)        = 0
[pid  5239] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5258] <... futex resumed>)        = 0
[pid  5239] <... futex resumed>)        = 1
[pid  5258] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[   96.323006][ T5240] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  5239] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5258] <... ioctl resumed>)        = 0
[pid  5258] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5258] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5240] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5240] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5240] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5239] close(3)                    = 0
[pid  5239] close(4)                    = 0
[pid  5239] close(5)                    = 0
[pid  5239] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5239] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5239] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5239] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5239] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5239] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5239] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5239] close(13)                   = -1 EBADF (Bad file descriptor)
[   96.456682][ T5240] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[   96.476717][ T5240] BTRFS info (device loop0): balance: ended with status: 0
[pid  5239] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5239] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5239] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5239] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5239] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5239] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5239] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5239] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5239] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5239] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5239] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5239] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5239] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5239] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5239] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5239] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5239] exit_group(0 <unfinished ...>
[pid  5258] <... futex resumed>)        = ?
[pid  5240] <... futex resumed>)        = ?
[pid  5239] <... exit_group resumed>)   = ?
[pid  5258] +++ exited with 0 +++
[pid  5240] +++ exited with 0 +++
[pid  5239] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=27, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=47 /* 0.47 s */} ---
[pid  5073] umount2("./8", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./8", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./8/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./8/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./8/binderfs")      = 0
[pid  5073] umount2("./8/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./8/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./8/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./8/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./8/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./8/file0")          = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./8")                = 0
[pid  5073] mkdir("./9", 0777)          = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5259 attached
, child_tidptr=0x5555570a9690) = 30
[pid  5259] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5259] chdir("./9")                = 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(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5259] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5259] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5259] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5259] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5260 attached
 <unfinished ...>
[pid  5260] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  5260] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5259] <... clone3 resumed> => {parent_tid=[31]}, 88) = 31
[pid  5260] <... set_robust_list resumed>) = 0
[pid  5259] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5260] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5259] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5260] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5259] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5260] memfd_create("syzkaller", 0 <unfinished ...>
[pid  5259] <... futex resumed>)        = 0
[pid  5260] <... memfd_create resumed>) = 3
[pid  5259] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5260] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5260] 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) = 16777216
[pid  5260] munmap(0x7f877d82c000, 138412032) = 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("./file0", 0777)      = 0
[   97.167297][ T5260] loop0: detected capacity change from 0 to 32768
[   97.191951][ T5260] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5260)
[   97.207724][ T5260] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[   97.217008][ T5260] BTRFS info (device loop0): force clearing of disk cache
[   97.224248][ T5260] BTRFS info (device loop0): setting nodatasum
[   97.230442][ T5260] BTRFS info (device loop0): allowing degraded mounts
[   97.237527][ T5260] BTRFS info (device loop0): enabling disk space caching
[   97.244627][ T5260] BTRFS info (device loop0): disk space caching is enabled
[   97.266282][ T5260] BTRFS info (device loop0): enabling ssd optimizations
[   97.273245][ T5260] BTRFS info (device loop0): auto enabling async discard
[   97.281979][ T5260] BTRFS info (device loop0): rebuilding free space tree
[   97.293711][ T5260] BTRFS info (device loop0): disabling free space tree
[   97.300670][ T5260] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  5260] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5260] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5260] chdir("./file0")            = 0
[pid  5260] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5260] close(4)                    = 0
[pid  5260] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5259] <... futex resumed>)        = 0
[pid  5259] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5260] open("./file0", O_RDONLY <unfinished ...>
[pid  5259] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5260] <... open resumed>)         = 4
[pid  5260] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5259] <... futex resumed>)        = 0
[   97.310366][ T5260] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[   97.324212][ T5260] BTRFS info (device loop0): checking UUID tree
[pid  5260] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5259] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5260] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5259] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5260] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  5260] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5260] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5259] <... futex resumed>)        = 0
[pid  5260] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5259] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5260] 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}} <unfinished ...>
[pid  5259] <... futex resumed>)        = 0
[pid  5259] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5259] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5259] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5259] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[   97.398286][ T5260] BTRFS info (device loop0): balance: start -d -m
[   97.406913][ T5260] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[   97.433101][ T5260] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5259] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5259] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 5278 attached
 => {parent_tid=[32]}, 88) = 32
[pid  5278] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  5259] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5278] <... rseq resumed>)         = 0
[pid  5259] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5278] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  5259] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5278] <... set_robust_list resumed>) = 0
[pid  5259] <... futex resumed>)        = 0
[pid  5259] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5278] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5278] open("./file0", O_RDONLY)   = 5
[pid  5278] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5259] <... futex resumed>)        = 0
[pid  5278] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5259] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5278] <... futex resumed>)        = 0
[pid  5278] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  5259] <... futex resumed>)        = 1
[pid  5259] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[   97.524682][ T5260] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  5278] <... ioctl resumed>)        = 0
[pid  5278] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5278] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5260] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5260] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5259] close(3)                    = 0
[pid  5259] close(4 <unfinished ...>
[pid  5260] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5259] <... close resumed>)        = 0
[pid  5259] close(5)                    = 0
[pid  5259] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5259] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5259] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5259] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5259] close(10)                   = -1 EBADF (Bad file descriptor)
[   97.612087][ T5260] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[   97.631929][ T5260] BTRFS info (device loop0): balance: ended with status: 0
[pid  5259] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5259] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5259] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5259] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5259] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5259] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5259] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5259] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5259] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5259] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5259] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5259] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5259] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5259] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5259] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5259] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5259] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5259] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5259] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5259] exit_group(0 <unfinished ...>
[pid  5260] <... futex resumed>)        = ?
[pid  5278] <... futex resumed>)        = ?
[pid  5260] +++ exited with 0 +++
[pid  5259] <... exit_group resumed>)   = ?
[pid  5278] +++ exited with 0 +++
[pid  5259] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=30, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=41 /* 0.41 s */} ---
[pid  5073] umount2("./9", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./9", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./9/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./9/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./9/binderfs")      = 0
[pid  5073] umount2("./9/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./9/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./9/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./9/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./9/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./9/file0")          = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./9")                = 0
[pid  5073] mkdir("./10", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5279 attached
, child_tidptr=0x5555570a9690) = 33
[pid  5279] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5279] chdir("./10")               = 0
[pid  5279] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5279] setpgid(0, 0)               = 0
[pid  5279] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5279] write(3, "1000", 4)         = 4
[pid  5279] close(3)                    = 0
[pid  5279] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5279] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5279] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5279] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5279] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5279] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5280 attached
 <unfinished ...>
[pid  5280] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  5279] <... clone3 resumed> => {parent_tid=[34]}, 88) = 34
[pid  5280] <... rseq resumed>)         = 0
[pid  5279] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5280] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5279] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5280] <... set_robust_list resumed>) = 0
[pid  5279] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5280] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5279] <... futex resumed>)        = 0
[pid  5280] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5279] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5280] memfd_create("syzkaller", 0) = 3
[pid  5280] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5280] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216
[pid  5280] munmap(0x7f877d82c000, 138412032) = 0
[pid  5280] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5280] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5280] close(3)                    = 0
[pid  5280] mkdir("./file0", 0777)      = 0
[   98.241688][ T5280] loop0: detected capacity change from 0 to 32768
[   98.256771][ T5280] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5280)
[   98.273073][ T5280] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[   98.282349][ T5280] BTRFS info (device loop0): force clearing of disk cache
[   98.289489][ T5280] BTRFS info (device loop0): setting nodatasum
[   98.295697][ T5280] BTRFS info (device loop0): allowing degraded mounts
[   98.302464][ T5280] BTRFS info (device loop0): enabling disk space caching
[   98.309532][ T5280] BTRFS info (device loop0): disk space caching is enabled
[   98.330573][ T5280] BTRFS info (device loop0): enabling ssd optimizations
[   98.337624][ T5280] BTRFS info (device loop0): auto enabling async discard
[   98.345602][ T5280] BTRFS info (device loop0): rebuilding free space tree
[   98.358857][ T5280] BTRFS info (device loop0): disabling free space tree
[   98.365826][ T5280] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[   98.375477][ T5280] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  5280] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5280] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5280] chdir("./file0")            = 0
[pid  5280] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5280] close(4)                    = 0
[pid  5280] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5280] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5279] <... futex resumed>)        = 0
[pid  5279] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5279] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5280] <... futex resumed>)        = 0
[   98.388409][ T5280] BTRFS info (device loop0): checking UUID tree
[pid  5280] open("./file0", O_RDONLY)   = 4
[pid  5280] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5279] <... futex resumed>)        = 0
[pid  5279] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5280] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  5279] <... futex resumed>)        = 0
[pid  5280] <... ioctl resumed>)        = 0
[pid  5279] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5280] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5280] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5279] <... futex resumed>)        = 0
[pid  5279] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5280] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5279] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5280] 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}} <unfinished ...>
[pid  5279] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  5279] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5279] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5279] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5279] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5279] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[35]}, 88) = 35
./strace-static-x86_64: Process 5298 attached
[pid  5298] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  5298] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  5298] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5279] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5298] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5279] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5298] open("./file0", O_RDONLY <unfinished ...>
[pid  5279] <... futex resumed>)        = 0
[pid  5298] <... open resumed>)         = 5
[pid  5298] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5279] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid  5279] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5279] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5298] <... futex resumed>)        = 1
[pid  5279] <... futex resumed>)        = 0
[pid  5298] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[   98.504546][ T5280] BTRFS info (device loop0): balance: start -d -m
[   98.516825][ T5280] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[   98.540836][ T5280] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5279] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=48000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5298] <... ioctl resumed>)        = 0
[   98.620157][ T5280] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  5298] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5298] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5280] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5280] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5279] close(3 <unfinished ...>
[pid  5280] <... futex resumed>)        = 0
[pid  5279] <... close resumed>)        = 0
[pid  5280] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5279] close(4)                    = 0
[pid  5279] close(5)                    = 0
[pid  5279] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5279] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5279] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5279] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5279] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5279] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5279] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5279] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5279] close(14)                   = -1 EBADF (Bad file descriptor)
[   98.685499][ T5280] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[   98.707256][ T5280] BTRFS info (device loop0): balance: ended with status: 0
[pid  5279] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5279] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5279] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5279] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5279] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5279] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5279] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5279] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5279] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5279] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5279] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5279] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5279] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5279] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5279] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5279] exit_group(0 <unfinished ...>
[pid  5298] <... futex resumed>)        = ?
[pid  5280] <... futex resumed>)        = ?
[pid  5298] +++ exited with 0 +++
[pid  5280] +++ exited with 0 +++
[pid  5279] <... exit_group resumed>)   = ?
[pid  5279] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=33, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=38 /* 0.38 s */} ---
[pid  5073] umount2("./10", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./10", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./10/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./10/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./10/binderfs")     = 0
[pid  5073] umount2("./10/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./10/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./10/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./10/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./10/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./10/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./10")               = 0
[pid  5073] mkdir("./11", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5299 attached
, child_tidptr=0x5555570a9690) = 36
[pid  5299] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5299] chdir("./11")               = 0
[pid  5299] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5299] setpgid(0, 0)               = 0
[pid  5299] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5299] write(3, "1000", 4)         = 4
[pid  5299] close(3)                    = 0
[pid  5299] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5299] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5299] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5299] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5299] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5299] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5300 attached
 <unfinished ...>
[pid  5300] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  5299] <... clone3 resumed> => {parent_tid=[37]}, 88) = 37
[pid  5300] set_robust_list(0x7f8785c4c9a0, 24) = 0
[pid  5299] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5300] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5299] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5300] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5299] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5300] memfd_create("syzkaller", 0 <unfinished ...>
[pid  5299] <... futex resumed>)        = 0
[pid  5299] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5300] <... memfd_create resumed>) = 3
[pid  5300] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5300] 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) = 16777216
[pid  5300] munmap(0x7f877d82c000, 138412032) = 0
[pid  5300] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5300] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5300] close(3)                    = 0
[pid  5300] mkdir("./file0", 0777)      = 0
[   99.385672][ T5300] loop0: detected capacity change from 0 to 32768
[   99.401909][ T5300] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5300)
[   99.418540][ T5300] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[   99.427812][ T5300] BTRFS info (device loop0): force clearing of disk cache
[   99.434945][ T5300] BTRFS info (device loop0): setting nodatasum
[   99.441090][ T5300] BTRFS info (device loop0): allowing degraded mounts
[   99.447945][ T5300] BTRFS info (device loop0): enabling disk space caching
[   99.454999][ T5300] BTRFS info (device loop0): disk space caching is enabled
[   99.477666][ T5300] BTRFS info (device loop0): enabling ssd optimizations
[   99.484717][ T5300] BTRFS info (device loop0): auto enabling async discard
[   99.493159][ T5300] BTRFS info (device loop0): rebuilding free space tree
[   99.505491][ T5300] BTRFS info (device loop0): disabling free space tree
[   99.512388][ T5300] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[   99.522070][ T5300] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  5300] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5300] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5300] chdir("./file0")            = 0
[pid  5300] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5300] close(4)                    = 0
[   99.535445][ T5300] BTRFS info (device loop0): checking UUID tree
[pid  5300] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5299] <... futex resumed>)        = 0
[pid  5300] <... futex resumed>)        = 1
[pid  5299] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5300] open("./file0", O_RDONLY)   = 4
[pid  5299] <... futex resumed>)        = 0
[pid  5299] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5300] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5299] <... futex resumed>)        = 0
[pid  5300] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5299] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5300] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5299] <... futex resumed>)        = 0
[pid  5300] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  5299] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5300] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5300] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5299] <... futex resumed>)        = 0
[pid  5299] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5300] <... futex resumed>)        = 0
[pid  5300] 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}} <unfinished ...>
[pid  5299] <... futex resumed>)        = 1
[pid  5299] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5299] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5299] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5299] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5299] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5299] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[38]}, 88) = 38
./strace-static-x86_64: Process 5318 attached
[pid  5318] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  5299] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5318] <... rseq resumed>)         = 0
[pid  5299] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5318] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  5318] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5299] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5318] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5318] open("./file0", O_RDONLY <unfinished ...>
[pid  5299] <... futex resumed>)        = 0
[pid  5299] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5318] <... open resumed>)         = 5
[pid  5318] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5299] <... futex resumed>)        = 0
[   99.621037][ T5300] BTRFS info (device loop0): balance: start -d -m
[   99.630555][ T5300] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[   99.653943][ T5300] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5318] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  5299] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[   99.704514][ T5300] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  5299] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5318] <... ioctl resumed>)        = 0
[pid  5318] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5318] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5300] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5300] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5299] close(3 <unfinished ...>
[pid  5300] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5299] <... close resumed>)        = 0
[pid  5299] close(4)                    = 0
[pid  5299] close(5)                    = 0
[pid  5299] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5299] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5299] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5299] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5299] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5299] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5299] close(12)                   = -1 EBADF (Bad file descriptor)
[   99.840405][ T5300] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[   99.860105][ T5300] BTRFS info (device loop0): balance: ended with status: 0
[pid  5299] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5299] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5299] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5299] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5299] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5299] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5299] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5299] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5299] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5299] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5299] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5299] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5299] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5299] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5299] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5299] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5299] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5299] exit_group(0 <unfinished ...>
[pid  5300] <... futex resumed>)        = ?
[pid  5318] <... futex resumed>)        = ?
[pid  5300] +++ exited with 0 +++
[pid  5299] <... exit_group resumed>)   = ?
[pid  5318] +++ exited with 0 +++
[pid  5299] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=36, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=40 /* 0.40 s */} ---
[pid  5073] umount2("./11", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./11", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./11/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./11/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./11/binderfs")     = 0
[pid  5073] umount2("./11/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./11/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./11/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./11/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./11/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./11/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./11")               = 0
[pid  5073] mkdir("./12", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5319 attached
, child_tidptr=0x5555570a9690) = 39
[pid  5319] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5319] chdir("./12")               = 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(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5319] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5319] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5319] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5319] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5320 attached
 => {parent_tid=[40]}, 88) = 40
[pid  5320] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  5319] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5320] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5319] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5320] <... set_robust_list resumed>) = 0
[pid  5319] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5320] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5319] <... futex resumed>)        = 0
[pid  5320] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5319] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5320] memfd_create("syzkaller", 0) = 3
[pid  5320] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5320] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216
[pid  5320] munmap(0x7f877d82c000, 138412032) = 0
[pid  5320] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5320] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5320] close(3)                    = 0
[pid  5320] mkdir("./file0", 0777)      = 0
[  100.462576][ T5320] loop0: detected capacity change from 0 to 32768
[  100.479365][ T5320] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5320)
[  100.495926][ T5320] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  100.505302][ T5320] BTRFS info (device loop0): force clearing of disk cache
[  100.512401][ T5320] BTRFS info (device loop0): setting nodatasum
[  100.518611][ T5320] BTRFS info (device loop0): allowing degraded mounts
[  100.525406][ T5320] BTRFS info (device loop0): enabling disk space caching
[  100.532413][ T5320] BTRFS info (device loop0): disk space caching is enabled
[  100.554112][ T5320] BTRFS info (device loop0): enabling ssd optimizations
[  100.561091][ T5320] BTRFS info (device loop0): auto enabling async discard
[  100.570044][ T5320] BTRFS info (device loop0): rebuilding free space tree
[  100.581766][ T5320] BTRFS info (device loop0): disabling free space tree
[  100.588956][ T5320] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  100.598661][ T5320] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  5320] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5320] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5320] chdir("./file0")            = 0
[pid  5320] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5320] close(4)                    = 0
[pid  5320] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5319] <... futex resumed>)        = 0
[pid  5320] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5319] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5320] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5319] <... futex resumed>)        = 0
[pid  5320] open("./file0", O_RDONLY <unfinished ...>
[pid  5319] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5320] <... open resumed>)         = 4
[pid  5320] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5320] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5319] <... futex resumed>)        = 0
[pid  5319] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5320] <... futex resumed>)        = 0
[pid  5320] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  5319] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5320] <... ioctl resumed>)        = 0
[pid  5320] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5320] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5319] <... futex resumed>)        = 0
[pid  5319] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[  100.612653][ T5320] BTRFS info (device loop0): checking UUID tree
[pid  5320] <... futex resumed>)        = 0
[pid  5320] 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}} <unfinished ...>
[pid  5319] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5319] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5319] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5319] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5319] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[  100.685649][ T5320] BTRFS info (device loop0): balance: start -d -m
[  100.694499][ T5320] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  100.725142][ T5320] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5319] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[41]}, 88) = 41
./strace-static-x86_64: Process 5338 attached
[pid  5338] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  5319] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5338] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  5338] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5319] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5338] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5319] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5338] open("./file0", O_RDONLY <unfinished ...>
[pid  5319] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5338] <... open resumed>)         = 5
[pid  5338] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5319] <... futex resumed>)        = 0
[pid  5319] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5319] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[  100.780584][ T5320] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  5338] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  5319] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  5338] <... ioctl resumed>)        = 0
[pid  5338] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5338] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5320] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5320] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5320] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5319] close(3)                    = 0
[pid  5319] close(4)                    = 0
[pid  5319] close(5)                    = 0
[pid  5319] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5319] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5319] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5319] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5319] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5319] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5319] close(12)                   = -1 EBADF (Bad file descriptor)
[  100.907214][ T5320] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  100.930826][ T5320] BTRFS info (device loop0): balance: ended with status: 0
[pid  5319] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5319] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5319] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5319] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5319] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5319] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5319] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5319] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5319] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5319] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5319] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5319] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5319] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5319] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5319] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5319] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5319] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5319] exit_group(0 <unfinished ...>
[pid  5338] <... futex resumed>)        = ?
[pid  5319] <... exit_group resumed>)   = ?
[pid  5338] +++ exited with 0 +++
[pid  5320] <... futex resumed>)        = ?
[pid  5320] +++ exited with 0 +++
[pid  5319] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=39, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=42 /* 0.42 s */} ---
[pid  5073] umount2("./12", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./12", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./12/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./12/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./12/binderfs")     = 0
[pid  5073] umount2("./12/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./12/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./12/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./12/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./12/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./12/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./12")               = 0
[pid  5073] mkdir("./13", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5339 attached
, child_tidptr=0x5555570a9690) = 42
[pid  5339] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5339] chdir("./13")               = 0
[pid  5339] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5339] setpgid(0, 0)               = 0
[pid  5339] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5339] write(3, "1000", 4)         = 4
[pid  5339] close(3)                    = 0
[pid  5339] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5339] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5339] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5339] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5339] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5339] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5340 attached
 <unfinished ...>
[pid  5340] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  5339] <... clone3 resumed> => {parent_tid=[43]}, 88) = 43
[pid  5340] <... rseq resumed>)         = 0
[pid  5339] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5340] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5339] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5340] <... set_robust_list resumed>) = 0
[pid  5340] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5339] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5340] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5339] <... futex resumed>)        = 0
[pid  5340] memfd_create("syzkaller", 0 <unfinished ...>
[pid  5339] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5340] <... memfd_create resumed>) = 3
[pid  5340] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5340] 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) = 16777216
[pid  5340] munmap(0x7f877d82c000, 138412032) = 0
[pid  5340] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5340] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5340] close(3)                    = 0
[pid  5340] mkdir("./file0", 0777)      = 0
[  101.498624][ T5340] loop0: detected capacity change from 0 to 32768
[  101.512518][ T5340] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5340)
[  101.528402][ T5340] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  101.537744][ T5340] BTRFS info (device loop0): force clearing of disk cache
[  101.544906][ T5340] BTRFS info (device loop0): setting nodatasum
[  101.551050][ T5340] BTRFS info (device loop0): allowing degraded mounts
[  101.557847][ T5340] BTRFS info (device loop0): enabling disk space caching
[  101.564912][ T5340] BTRFS info (device loop0): disk space caching is enabled
[  101.587577][ T5340] BTRFS info (device loop0): enabling ssd optimizations
[  101.594568][ T5340] BTRFS info (device loop0): auto enabling async discard
[  101.602308][ T5340] BTRFS info (device loop0): rebuilding free space tree
[  101.614572][ T5340] BTRFS info (device loop0): disabling free space tree
[  101.621463][ T5340] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  101.631139][ T5340] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  5340] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5340] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5340] chdir("./file0")            = 0
[pid  5340] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5340] close(4)                    = 0
[pid  5340] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5339] <... futex resumed>)        = 0
[  101.644400][ T5340] BTRFS info (device loop0): checking UUID tree
[pid  5339] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5340] open("./file0", O_RDONLY)   = 4
[pid  5339] <... futex resumed>)        = 0
[pid  5339] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5340] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5339] <... futex resumed>)        = 0
[pid  5340] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5339] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5340] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5340] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  5340] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5340] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL) = 0
[pid  5339] <... futex resumed>)        = 1
[pid  5340] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5339] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid  5339] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5339] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5340] <... futex resumed>)        = 0
[  101.742566][ T5340] BTRFS info (device loop0): balance: start -d -m
[  101.752880][ T5340] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  5340] 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}} <unfinished ...>
[pid  5339] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  5339] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5339] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5339] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5339] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5339] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[44]}, 88) = 44
[pid  5339] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5339] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5339] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5358 attached
 <unfinished ...>
[pid  5358] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  5358] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  5358] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5358] open("./file0", O_RDONLY)   = 5
[pid  5358] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5339] <... futex resumed>)        = 0
[pid  5358] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  5339] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  101.785185][ T5340] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5339] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5358] <... ioctl resumed>)        = 0
[pid  5358] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  101.924669][ T5340] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  101.949146][ T5340] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  5358] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5340] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5340] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5339] close(3 <unfinished ...>
[pid  5340] <... futex resumed>)        = 0
[pid  5339] <... close resumed>)        = 0
[pid  5340] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5339] close(4)                    = 0
[pid  5339] close(5)                    = 0
[pid  5339] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5339] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5339] close(8)                    = -1 EBADF (Bad file descriptor)
[  101.969018][ T5340] BTRFS info (device loop0): balance: ended with status: 0
[pid  5339] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5339] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5339] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5339] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5339] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5339] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5339] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5339] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5339] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5339] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5339] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5339] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5339] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5339] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5339] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5339] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5339] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5339] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5339] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5339] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5339] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5339] exit_group(0 <unfinished ...>
[pid  5358] <... futex resumed>)        = ?
[pid  5340] <... futex resumed>)        = ?
[pid  5358] +++ exited with 0 +++
[pid  5340] +++ exited with 0 +++
[pid  5339] <... exit_group resumed>)   = ?
[pid  5339] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=42, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=40 /* 0.40 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./13", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./13", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./13/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./13/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./13/binderfs")     = 0
[pid  5073] umount2("./13/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./13/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./13/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./13/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./13/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./13/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./13")               = 0
[pid  5073] mkdir("./14", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5359 attached
, child_tidptr=0x5555570a9690) = 45
[pid  5359] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5359] chdir("./14")               = 0
[pid  5359] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5359] setpgid(0, 0)               = 0
[pid  5359] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5359] write(3, "1000", 4)         = 4
[pid  5359] close(3)                    = 0
[pid  5359] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5359] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5359] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5359] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5359] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5359] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5360 attached
 <unfinished ...>
[pid  5360] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  5359] <... clone3 resumed> => {parent_tid=[46]}, 88) = 46
[pid  5360] <... rseq resumed>)         = 0
[pid  5359] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5360] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5359] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5360] <... set_robust_list resumed>) = 0
[pid  5359] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5360] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5359] <... futex resumed>)        = 0
[pid  5359] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5360] memfd_create("syzkaller", 0) = 3
[pid  5360] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5360] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216) = 16777216
[pid  5360] munmap(0x7f877d82c000, 138412032) = 0
[pid  5360] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5360] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5360] close(3)                    = 0
[pid  5360] mkdir("./file0", 0777)      = 0
[  102.549352][ T5360] loop0: detected capacity change from 0 to 32768
[  102.572787][ T5360] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5360)
[  102.588801][ T5360] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  102.598294][ T5360] BTRFS info (device loop0): force clearing of disk cache
[  102.605751][ T5360] BTRFS info (device loop0): setting nodatasum
[  102.611923][ T5360] BTRFS info (device loop0): allowing degraded mounts
[  102.618911][ T5360] BTRFS info (device loop0): enabling disk space caching
[  102.625974][ T5360] BTRFS info (device loop0): disk space caching is enabled
[  102.647927][ T5360] BTRFS info (device loop0): enabling ssd optimizations
[  102.654927][ T5360] BTRFS info (device loop0): auto enabling async discard
[  102.662677][ T5360] BTRFS info (device loop0): rebuilding free space tree
[  102.674923][ T5360] BTRFS info (device loop0): disabling free space tree
[  102.681802][ T5360] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  5360] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5360] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5360] chdir("./file0")            = 0
[pid  5360] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5360] close(4)                    = 0
[pid  5360] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5359] <... futex resumed>)        = 0
[pid  5360] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5359] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5360] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5359] <... futex resumed>)        = 0
[pid  5360] open("./file0", O_RDONLY <unfinished ...>
[pid  5359] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5360] <... open resumed>)         = 4
[pid  5360] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5359] <... futex resumed>)        = 0
[pid  5360] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  5359] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5360] <... ioctl resumed>)        = 0
[pid  5359] <... futex resumed>)        = 0
[  102.691479][ T5360] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  102.704725][ T5360] BTRFS info (device loop0): checking UUID tree
[pid  5359] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5360] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5359] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5359] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5360] <... futex resumed>)        = 0
[pid  5359] <... futex resumed>)        = 0
[pid  5360] 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}} <unfinished ...>
[pid  5359] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5359] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5359] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5359] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5359] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[  102.768482][ T5360] BTRFS info (device loop0): balance: start -d -m
[  102.776912][ T5360] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  102.805709][ T5360] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5359] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 5378 attached
 => {parent_tid=[47]}, 88) = 47
[pid  5378] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  5359] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5378] <... rseq resumed>)         = 0
[pid  5378] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  5378] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5359] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5378] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5378] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5359] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5378] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5359] <... futex resumed>)        = 0
[pid  5378] open("./file0", O_RDONLY <unfinished ...>
[pid  5359] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5378] <... open resumed>)         = 5
[pid  5378] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5359] <... futex resumed>)        = 0
[pid  5359] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5378] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  102.856631][ T5360] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  5359] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[  102.946369][ T5360] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  5378] <... ioctl resumed>)        = 0
[pid  5378] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5378] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5360] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5360] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5359] close(3 <unfinished ...>
[pid  5360] <... futex resumed>)        = 0
[pid  5359] <... close resumed>)        = 0
[pid  5360] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5359] close(4)                    = 0
[pid  5359] close(5)                    = 0
[pid  5359] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5359] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5359] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5359] close(9)                    = -1 EBADF (Bad file descriptor)
[  103.012461][ T5360] BTRFS info (device loop0): balance: ended with status: 0
[pid  5359] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5359] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5359] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5359] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5359] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5359] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5359] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5359] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5359] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5359] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5359] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5359] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5359] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5359] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5359] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5359] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5359] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5359] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5359] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5359] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5359] exit_group(0 <unfinished ...>
[pid  5360] <... futex resumed>)        = ?
[pid  5359] <... exit_group resumed>)   = ?
[pid  5360] +++ exited with 0 +++
[pid  5378] <... futex resumed>)        = ?
[pid  5378] +++ exited with 0 +++
[pid  5359] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=45, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=40 /* 0.40 s */} ---
[pid  5073] umount2("./14", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./14", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./14/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./14/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./14/binderfs")     = 0
[pid  5073] umount2("./14/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./14/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./14/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./14/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./14/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./14/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./14")               = 0
[pid  5073] mkdir("./15", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5379 attached
, child_tidptr=0x5555570a9690) = 48
[pid  5379] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5379] chdir("./15")               = 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(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5379] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5379] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5379] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5379] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5380 attached
 <unfinished ...>
[pid  5380] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  5379] <... clone3 resumed> => {parent_tid=[49]}, 88) = 49
[pid  5380] set_robust_list(0x7f8785c4c9a0, 24) = 0
[pid  5379] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5380] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5379] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5380] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5379] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5380] memfd_create("syzkaller", 0 <unfinished ...>
[pid  5379] <... futex resumed>)        = 0
[pid  5380] <... memfd_create resumed>) = 3
[pid  5379] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5380] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5380] 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) = 16777216
[pid  5380] munmap(0x7f877d82c000, 138412032) = 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("./file0", 0777)      = 0
[  103.598087][ T5380] loop0: detected capacity change from 0 to 32768
[  103.612833][ T5380] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5380)
[  103.629167][ T5380] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  103.638433][ T5380] BTRFS info (device loop0): force clearing of disk cache
[  103.645615][ T5380] BTRFS info (device loop0): setting nodatasum
[  103.651811][ T5380] BTRFS info (device loop0): allowing degraded mounts
[  103.658629][ T5380] BTRFS info (device loop0): enabling disk space caching
[  103.665746][ T5380] BTRFS info (device loop0): disk space caching is enabled
[  103.689001][ T5380] BTRFS info (device loop0): enabling ssd optimizations
[  103.696011][ T5380] BTRFS info (device loop0): auto enabling async discard
[  103.704085][ T5380] BTRFS info (device loop0): rebuilding free space tree
[  103.716168][ T5380] BTRFS info (device loop0): disabling free space tree
[  103.723054][ T5380] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  5380] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5380] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5380] chdir("./file0")            = 0
[pid  5380] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5380] close(4)                    = 0
[pid  5380] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5379] <... futex resumed>)        = 0
[pid  5379] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5380] open("./file0", O_RDONLY <unfinished ...>
[pid  5379] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5380] <... open resumed>)         = 4
[pid  5380] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5379] <... futex resumed>)        = 0
[pid  5380] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5379] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5380] <... futex resumed>)        = 0
[pid  5379] <... futex resumed>)        = 1
[pid  5380] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  5379] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5380] <... ioctl resumed>)        = 0
[  103.732766][ T5380] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  103.746045][ T5380] BTRFS info (device loop0): checking UUID tree
[pid  5380] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5379] <... futex resumed>)        = 0
[pid  5380] 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}} <unfinished ...>
[pid  5379] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  103.827510][ T5380] BTRFS info (device loop0): balance: start -d -m
[  103.836463][ T5380] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  5379] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5379] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5379] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5379] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5379] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5379] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[50]}, 88) = 50
[pid  5379] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5379] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5379] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5398 attached
 <unfinished ...>
[pid  5398] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  5398] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  5398] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5398] open("./file0", O_RDONLY)   = 5
[pid  5398] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5379] <... futex resumed>)        = 0
[pid  5398] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5379] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5398] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5379] <... futex resumed>)        = 0
[pid  5398] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  103.868028][ T5380] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5379] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5398] <... ioctl resumed>)        = 0
[pid  5398] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  104.017263][ T5380] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  104.042669][ T5380] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  5398] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5380] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5380] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5380] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5379] close(3)                    = 0
[pid  5379] close(4)                    = 0
[pid  5379] close(5)                    = 0
[pid  5379] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5379] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5379] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5379] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5379] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5379] close(11)                   = -1 EBADF (Bad file descriptor)
[  104.061423][ T5380] BTRFS info (device loop0): balance: ended with status: 0
[pid  5379] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5379] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5379] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5379] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5379] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5379] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5379] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5379] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5379] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5379] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5379] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5379] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5379] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5379] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5379] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5379] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5379] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5379] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5379] exit_group(0 <unfinished ...>
[pid  5398] <... futex resumed>)        = ?
[pid  5380] <... futex resumed>)        = ?
[pid  5379] <... exit_group resumed>)   = ?
[pid  5398] +++ exited with 0 +++
[pid  5380] +++ exited with 0 +++
[pid  5379] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=48, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=37 /* 0.37 s */} ---
[pid  5073] umount2("./15", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./15", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./15/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./15/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./15/binderfs")     = 0
[pid  5073] umount2("./15/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./15/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./15/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./15/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./15/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./15/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./15")               = 0
[pid  5073] mkdir("./16", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5399 attached
 <unfinished ...>
[pid  5399] set_robust_list(0x5555570a96a0, 24 <unfinished ...>
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 51
[pid  5399] <... set_robust_list resumed>) = 0
[pid  5399] chdir("./16")               = 0
[pid  5399] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5399] setpgid(0, 0)               = 0
[pid  5399] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5399] write(3, "1000", 4)         = 4
[pid  5399] close(3)                    = 0
[pid  5399] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5399] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5399] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5399] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5399] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5399] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5400 attached
 <unfinished ...>
[pid  5400] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  5400] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5399] <... clone3 resumed> => {parent_tid=[52]}, 88) = 52
[pid  5400] <... set_robust_list resumed>) = 0
[pid  5399] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5400] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5399] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5400] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5399] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5400] memfd_create("syzkaller", 0 <unfinished ...>
[pid  5399] <... futex resumed>)        = 0
[pid  5400] <... memfd_create resumed>) = 3
[pid  5400] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5399] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5400] 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) = 16777216
[pid  5400] munmap(0x7f877d82c000, 138412032) = 0
[pid  5400] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5400] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5400] close(3)                    = 0
[pid  5400] mkdir("./file0", 0777)      = 0
[  104.764268][ T5400] loop0: detected capacity change from 0 to 32768
[  104.781472][ T5400] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5400)
[  104.797131][ T5400] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  104.806445][ T5400] BTRFS info (device loop0): force clearing of disk cache
[  104.813770][ T5400] BTRFS info (device loop0): setting nodatasum
[  104.820500][ T5400] BTRFS info (device loop0): allowing degraded mounts
[  104.827362][ T5400] BTRFS info (device loop0): enabling disk space caching
[  104.834480][ T5400] BTRFS info (device loop0): disk space caching is enabled
[  104.857811][ T5400] BTRFS info (device loop0): enabling ssd optimizations
[  104.864806][ T5400] BTRFS info (device loop0): auto enabling async discard
[  104.872639][ T5400] BTRFS info (device loop0): rebuilding free space tree
[  104.884909][ T5400] BTRFS info (device loop0): disabling free space tree
[  104.891795][ T5400] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  104.901646][ T5400] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  5400] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5400] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5400] chdir("./file0")            = 0
[pid  5400] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5400] close(4)                    = 0
[pid  5400] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5399] <... futex resumed>)        = 0
[pid  5399] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5400] open("./file0", O_RDONLY <unfinished ...>
[pid  5399] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5400] <... open resumed>)         = 4
[pid  5400] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5400] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5399] <... futex resumed>)        = 0
[pid  5400] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5399] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5400] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  5399] <... futex resumed>)        = 0
[pid  5400] <... ioctl resumed>)        = 0
[pid  5399] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5400] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5399] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5400] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[  104.915531][ T5400] BTRFS info (device loop0): checking UUID tree
[pid  5399] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5400] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5399] <... futex resumed>)        = 0
[pid  5400] 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}} <unfinished ...>
[  104.988369][ T5400] BTRFS info (device loop0): balance: start -d -m
[  104.999887][ T5400] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  5399] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5399] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5399] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5399] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5399] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5399] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[53]}, 88) = 53
[pid  5399] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5399] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5399] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5419 attached
 <unfinished ...>
[pid  5419] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  5419] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  5419] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5419] open("./file0", O_RDONLY)   = 5
[pid  5419] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5399] <... futex resumed>)        = 0
[pid  5419] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5399] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5419] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5399] <... futex resumed>)        = 0
[pid  5419] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  105.030458][ T5400] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5399] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5399] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  5419] <... ioctl resumed>)        = 0
[pid  5419] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  105.185303][ T5400] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  105.209255][ T5400] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  5419] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5400] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5400] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5399] close(3 <unfinished ...>
[pid  5400] <... futex resumed>)        = 0
[pid  5400] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5399] <... close resumed>)        = 0
[pid  5399] close(4)                    = 0
[pid  5399] close(5)                    = 0
[pid  5399] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5399] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5399] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5399] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5399] close(10)                   = -1 EBADF (Bad file descriptor)
[  105.228962][ T5400] BTRFS info (device loop0): balance: ended with status: 0
[pid  5399] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5399] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5399] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5399] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5399] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5399] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5399] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5399] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5399] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5399] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5399] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5399] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5399] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5399] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5399] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5399] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5399] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5399] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5399] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5399] exit_group(0 <unfinished ...>
[pid  5400] <... futex resumed>)        = ?
[pid  5419] <... futex resumed>)        = ?
[pid  5399] <... exit_group resumed>)   = ?
[pid  5419] +++ exited with 0 +++
[pid  5400] +++ exited with 0 +++
[pid  5399] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=51, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=41 /* 0.41 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./16", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./16", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./16/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./16/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./16/binderfs")     = 0
[pid  5073] umount2("./16/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./16/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./16/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./16/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./16/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./16/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./16")               = 0
[pid  5073] mkdir("./17", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5420 attached
 <unfinished ...>
[pid  5420] set_robust_list(0x5555570a96a0, 24 <unfinished ...>
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 54
[pid  5420] <... set_robust_list resumed>) = 0
[pid  5420] chdir("./17")               = 0
[pid  5420] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5420] setpgid(0, 0)               = 0
[pid  5420] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5420] write(3, "1000", 4)         = 4
[pid  5420] close(3)                    = 0
[pid  5420] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5420] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5420] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5420] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5420] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5420] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5421 attached
 <unfinished ...>
[pid  5421] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  5421] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5420] <... clone3 resumed> => {parent_tid=[55]}, 88) = 55
[pid  5421] <... set_robust_list resumed>) = 0
[pid  5420] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5421] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5420] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5421] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5420] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5421] memfd_create("syzkaller", 0 <unfinished ...>
[pid  5420] <... futex resumed>)        = 0
[pid  5420] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5421] <... memfd_create resumed>) = 3
[pid  5421] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5421] 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) = 16777216
[pid  5421] munmap(0x7f877d82c000, 138412032) = 0
[pid  5421] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5421] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5421] close(3)                    = 0
[pid  5421] mkdir("./file0", 0777)      = 0
[  105.869894][ T5421] loop0: detected capacity change from 0 to 32768
[  105.896472][ T5421] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5421)
[  105.912940][ T5421] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  105.922221][ T5421] BTRFS info (device loop0): force clearing of disk cache
[  105.929533][ T5421] BTRFS info (device loop0): setting nodatasum
[  105.935737][ T5421] BTRFS info (device loop0): allowing degraded mounts
[  105.942506][ T5421] BTRFS info (device loop0): enabling disk space caching
[  105.949872][ T5421] BTRFS info (device loop0): disk space caching is enabled
[  105.989606][ T5421] BTRFS info (device loop0): enabling ssd optimizations
[  105.996677][ T5421] BTRFS info (device loop0): auto enabling async discard
[  106.005030][ T5421] BTRFS info (device loop0): rebuilding free space tree
[  106.018592][ T5421] BTRFS info (device loop0): disabling free space tree
[  106.025526][ T5421] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  5421] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5421] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5421] chdir("./file0")            = 0
[pid  5421] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5421] close(4)                    = 0
[pid  5421] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5420] <... futex resumed>)        = 0
[pid  5420] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5421] <... futex resumed>)        = 1
[pid  5420] <... futex resumed>)        = 0
[pid  5421] open("./file0", O_RDONLY <unfinished ...>
[pid  5420] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5421] <... open resumed>)         = 4
[pid  5421] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5421] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5420] <... futex resumed>)        = 0
[pid  5420] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5421] <... futex resumed>)        = 0
[pid  5421] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  5420] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5421] <... ioctl resumed>)        = 0
[pid  5421] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5420] <... futex resumed>)        = 0
[  106.035191][ T5421] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  106.048342][ T5421] BTRFS info (device loop0): checking UUID tree
[pid  5420] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5421] 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}} <unfinished ...>
[pid  5420] <... futex resumed>)        = 0
[pid  5420] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5420] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5420] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5420] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5420] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5420] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 5440 attached
 <unfinished ...>
[pid  5440] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  5440] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  5440] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5440] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5420] <... clone3 resumed> => {parent_tid=[56]}, 88) = 56
[pid  5420] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5420] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5440] <... futex resumed>)        = 0
[pid  5420] <... futex resumed>)        = 1
[pid  5440] open("./file0", O_RDONLY <unfinished ...>
[pid  5420] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5440] <... open resumed>)         = 5
[pid  5440] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5420] <... futex resumed>)        = 0
[pid  5440] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5420] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5440] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5420] <... futex resumed>)        = 0
[pid  5440] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  106.106393][ T5421] BTRFS info (device loop0): balance: start -d -m
[  106.116947][ T5421] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  106.144203][ T5421] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5420] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5440] <... ioctl resumed>)        = 0
[pid  5440] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  106.313213][ T5421] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  106.338975][ T5421] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  5440] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5421] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5421] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5421] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5420] close(3)                    = 0
[pid  5420] close(4)                    = 0
[pid  5420] close(5)                    = 0
[pid  5420] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5420] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5420] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5420] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5420] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5420] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5420] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5420] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5420] close(14)                   = -1 EBADF (Bad file descriptor)
[  106.362311][ T5421] BTRFS info (device loop0): balance: ended with status: 0
[pid  5420] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5420] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5420] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5420] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5420] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5420] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5420] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5420] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5420] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5420] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5420] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5420] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5420] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5420] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5420] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5420] exit_group(0 <unfinished ...>
[pid  5421] <... futex resumed>)        = ?
[pid  5420] <... exit_group resumed>)   = ?
[pid  5421] +++ exited with 0 +++
[pid  5440] <... futex resumed>)        = ?
[pid  5440] +++ exited with 0 +++
[pid  5420] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=54, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=39 /* 0.39 s */} ---
[pid  5073] umount2("./17", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./17", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./17/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./17/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./17/binderfs")     = 0
[pid  5073] umount2("./17/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./17/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./17/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./17/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./17/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./17/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./17")               = 0
[pid  5073] mkdir("./18", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5443 attached
, child_tidptr=0x5555570a9690) = 57
[pid  5443] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5443] chdir("./18")               = 0
[pid  5443] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5443] setpgid(0, 0)               = 0
[pid  5443] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5443] write(3, "1000", 4)         = 4
[pid  5443] close(3)                    = 0
[pid  5443] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5443] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5443] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5443] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5443] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5443] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5444 attached
 => {parent_tid=[58]}, 88) = 58
[pid  5444] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  5443] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5444] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5443] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5444] <... set_robust_list resumed>) = 0
[pid  5443] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5444] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5443] <... futex resumed>)        = 0
[pid  5444] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5443] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5444] memfd_create("syzkaller", 0) = 3
[pid  5444] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5444] 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) = 16777216
[pid  5444] munmap(0x7f877d82c000, 138412032) = 0
[pid  5444] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5444] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5444] close(3)                    = 0
[pid  5444] mkdir("./file0", 0777)      = 0
[  106.990331][ T5444] loop0: detected capacity change from 0 to 32768
[  107.003708][ T5444] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5444)
[  107.019346][ T5444] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  107.028620][ T5444] BTRFS info (device loop0): force clearing of disk cache
[  107.035767][ T5444] BTRFS info (device loop0): setting nodatasum
[  107.041928][ T5444] BTRFS info (device loop0): allowing degraded mounts
[  107.048800][ T5444] BTRFS info (device loop0): enabling disk space caching
[  107.055902][ T5444] BTRFS info (device loop0): disk space caching is enabled
[  107.078841][ T5444] BTRFS info (device loop0): enabling ssd optimizations
[  107.085919][ T5444] BTRFS info (device loop0): auto enabling async discard
[  107.093742][ T5444] BTRFS info (device loop0): rebuilding free space tree
[  107.107512][ T5444] BTRFS info (device loop0): disabling free space tree
[  107.114442][ T5444] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  107.124149][ T5444] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  5444] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5444] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5444] chdir("./file0")            = 0
[pid  5444] ioctl(4, LOOP_CLR_FD)       = 0
[  107.137445][ T5444] BTRFS info (device loop0): checking UUID tree
[pid  5444] close(4)                    = 0
[pid  5444] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5444] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5443] <... futex resumed>)        = 0
[pid  5443] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5444] <... futex resumed>)        = 0
[pid  5443] <... futex resumed>)        = 1
[pid  5444] open("./file0", O_RDONLY <unfinished ...>
[pid  5443] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5444] <... open resumed>)         = 4
[pid  5444] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5444] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5443] <... futex resumed>)        = 0
[pid  5443] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5444] <... futex resumed>)        = 0
[pid  5443] <... futex resumed>)        = 1
[pid  5444] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  5443] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5444] <... ioctl resumed>)        = 0
[pid  5444] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5443] <... futex resumed>)        = 0
[pid  5444] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5443] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5444] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5443] <... futex resumed>)        = 0
[pid  5444] 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}} <unfinished ...>
[  107.232258][ T5444] BTRFS info (device loop0): balance: start -d -m
[  107.242664][ T5444] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  5443] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5443] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5443] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5443] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5443] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5443] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[59]}, 88) = 59
[pid  5443] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5443] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5443] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5462 attached
 <unfinished ...>
[pid  5462] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  5462] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  5462] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5462] open("./file0", O_RDONLY)   = 5
[pid  5462] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5443] <... futex resumed>)        = 0
[pid  5443] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5443] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[  107.273175][ T5444] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5462] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  5443] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  5462] <... ioctl resumed>)        = 0
[pid  5462] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  107.427136][ T5444] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  107.452165][ T5444] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  5462] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5444] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5444] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5443] close(3 <unfinished ...>
[pid  5444] <... futex resumed>)        = 0
[pid  5443] <... close resumed>)        = 0
[pid  5444] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5443] close(4)                    = 0
[pid  5443] close(5)                    = 0
[pid  5443] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5443] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5443] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5443] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5443] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5443] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5443] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5443] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5443] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5443] close(15)                   = -1 EBADF (Bad file descriptor)
[  107.471970][ T5444] BTRFS info (device loop0): balance: ended with status: 0
[pid  5443] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5443] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5443] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5443] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5443] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5443] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5443] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5443] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5443] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5443] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5443] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5443] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5443] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5443] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5443] exit_group(0 <unfinished ...>
[pid  5462] <... futex resumed>)        = ?
[pid  5462] +++ exited with 0 +++
[pid  5444] <... futex resumed>)        = ?
[pid  5443] <... exit_group resumed>)   = ?
[pid  5444] +++ exited with 0 +++
[pid  5443] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=57, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=42 /* 0.42 s */} ---
[pid  5073] umount2("./18", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./18", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./18/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./18/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./18/binderfs")     = 0
[pid  5073] umount2("./18/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./18/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./18/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./18/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./18/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./18/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./18")               = 0
[pid  5073] mkdir("./19", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5465 attached
, child_tidptr=0x5555570a9690) = 60
[pid  5465] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5465] chdir("./19")               = 0
[pid  5465] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5465] setpgid(0, 0)               = 0
[pid  5465] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5465] write(3, "1000", 4)         = 4
[pid  5465] close(3)                    = 0
[pid  5465] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5465] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5465] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5465] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5465] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5465] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5466 attached
 <unfinished ...>
[pid  5466] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  5465] <... clone3 resumed> => {parent_tid=[61]}, 88) = 61
[pid  5466] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5465] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5466] <... set_robust_list resumed>) = 0
[pid  5465] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5466] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5465] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5466] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5465] <... futex resumed>)        = 0
[pid  5466] memfd_create("syzkaller", 0 <unfinished ...>
[pid  5465] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5466] <... memfd_create resumed>) = 3
[pid  5466] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5466] 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) = 16777216
[pid  5466] munmap(0x7f877d82c000, 138412032) = 0
[pid  5466] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5466] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5466] close(3)                    = 0
[pid  5466] mkdir("./file0", 0777)      = 0
[  108.085614][ T5466] loop0: detected capacity change from 0 to 32768
[  108.110015][ T5466] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5466)
[  108.125075][ T5466] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  108.134343][ T5466] BTRFS info (device loop0): force clearing of disk cache
[  108.141439][ T5466] BTRFS info (device loop0): setting nodatasum
[  108.147712][ T5466] BTRFS info (device loop0): allowing degraded mounts
[  108.154508][ T5466] BTRFS info (device loop0): enabling disk space caching
[  108.161518][ T5466] BTRFS info (device loop0): disk space caching is enabled
[  108.183197][ T5466] BTRFS info (device loop0): enabling ssd optimizations
[  108.190412][ T5466] BTRFS info (device loop0): auto enabling async discard
[  108.199087][ T5466] BTRFS info (device loop0): rebuilding free space tree
[  108.211185][ T5466] BTRFS info (device loop0): disabling free space tree
[  108.218170][ T5466] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  5466] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5466] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5466] chdir("./file0")            = 0
[pid  5466] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5466] close(4)                    = 0
[pid  5466] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5466] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5465] <... futex resumed>)        = 0
[  108.227854][ T5466] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  108.240906][ T5466] BTRFS info (device loop0): checking UUID tree
[pid  5465] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5465] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5466] <... futex resumed>)        = 0
[pid  5466] open("./file0", O_RDONLY)   = 4
[pid  5466] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5465] <... futex resumed>)        = 0
[pid  5465] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5466] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  5465] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5466] <... ioctl resumed>)        = 0
[pid  5466] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5465] <... futex resumed>)        = 0
[pid  5465] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5466] <... futex resumed>)        = 1
[pid  5465] <... futex resumed>)        = 0
[pid  5465] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[  108.333600][ T5466] BTRFS info (device loop0): balance: start -d -m
[  108.342572][ T5466] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  5466] 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}} <unfinished ...>
[pid  5465] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  5465] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5465] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5465] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5465] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5465] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 5484 attached
 => {parent_tid=[62]}, 88) = 62
[pid  5484] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  5465] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5484] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  5465] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5484] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5465] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5484] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5484] open("./file0", O_RDONLY <unfinished ...>
[pid  5465] <... futex resumed>)        = 0
[pid  5465] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5484] <... open resumed>)         = 5
[pid  5484] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5465] <... futex resumed>)        = 0
[pid  5484] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5465] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5484] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5465] <... futex resumed>)        = 0
[pid  5484] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  108.376412][ T5466] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5465] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5484] <... ioctl resumed>)        = 0
[pid  5484] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  108.502205][ T5466] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  108.527694][ T5466] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  5484] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5466] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5466] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5466] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5465] close(3)                    = 0
[pid  5465] close(4)                    = 0
[pid  5465] close(5)                    = 0
[pid  5465] close(6)                    = -1 EBADF (Bad file descriptor)
[  108.547875][ T5466] BTRFS info (device loop0): balance: ended with status: 0
[pid  5465] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5465] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5465] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5465] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5465] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5465] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5465] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5465] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5465] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5465] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5465] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5465] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5465] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5465] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5465] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5465] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5465] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5465] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5465] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5465] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5465] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5465] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5465] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5465] exit_group(0)               = ?
[pid  5484] <... futex resumed>)        = ?
[pid  5466] <... futex resumed>)        = ?
[pid  5484] +++ exited with 0 +++
[pid  5466] +++ exited with 0 +++
[pid  5465] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=60, si_uid=0, si_status=0, si_utime=0, si_stime=42 /* 0.42 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./19", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./19", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./19/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./19/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./19/binderfs")     = 0
[pid  5073] umount2("./19/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./19/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./19/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./19/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./19/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./19/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./19")               = 0
[pid  5073] mkdir("./20", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5485 attached
, child_tidptr=0x5555570a9690) = 63
[pid  5485] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5485] chdir("./20")               = 0
[pid  5485] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5485] setpgid(0, 0)               = 0
[pid  5485] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5485] write(3, "1000", 4)         = 4
[pid  5485] close(3)                    = 0
[pid  5485] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5485] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5485] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5485] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5485] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5485] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5486 attached
 <unfinished ...>
[pid  5486] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  5485] <... clone3 resumed> => {parent_tid=[64]}, 88) = 64
[pid  5486] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5485] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5486] <... set_robust_list resumed>) = 0
[pid  5485] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5486] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5485] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5486] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5485] <... futex resumed>)        = 0
[pid  5486] memfd_create("syzkaller", 0 <unfinished ...>
[pid  5485] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5486] <... memfd_create resumed>) = 3
[pid  5486] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5486] 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) = 16777216
[pid  5486] munmap(0x7f877d82c000, 138412032) = 0
[pid  5486] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5486] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5486] close(3)                    = 0
[pid  5486] mkdir("./file0", 0777)      = 0
[  109.207189][ T5486] loop0: detected capacity change from 0 to 32768
[  109.227085][ T5486] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5486)
[  109.242935][ T5486] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  109.252236][ T5486] BTRFS info (device loop0): force clearing of disk cache
[  109.259381][ T5486] BTRFS info (device loop0): setting nodatasum
[  109.265582][ T5486] BTRFS info (device loop0): allowing degraded mounts
[  109.272347][ T5486] BTRFS info (device loop0): enabling disk space caching
[  109.279394][ T5486] BTRFS info (device loop0): disk space caching is enabled
[  109.301196][ T5486] BTRFS info (device loop0): enabling ssd optimizations
[  109.308228][ T5486] BTRFS info (device loop0): auto enabling async discard
[  109.317002][ T5486] BTRFS info (device loop0): rebuilding free space tree
[  109.329163][ T5486] BTRFS info (device loop0): disabling free space tree
[  109.336270][ T5486] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  109.345977][ T5486] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  5486] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5486] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5486] chdir("./file0")            = 0
[pid  5486] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5486] close(4)                    = 0
[pid  5486] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5486] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5485] <... futex resumed>)        = 0
[  109.359482][ T5486] BTRFS info (device loop0): checking UUID tree
[pid  5485] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5486] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5485] <... futex resumed>)        = 0
[pid  5486] open("./file0", O_RDONLY <unfinished ...>
[pid  5485] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5486] <... open resumed>)         = 4
[pid  5486] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5485] <... futex resumed>)        = 0
[pid  5486] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  5485] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5486] <... ioctl resumed>)        = 0
[pid  5485] <... futex resumed>)        = 0
[pid  5486] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5485] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5486] <... futex resumed>)        = 0
[pid  5485] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5486] 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}} <unfinished ...>
[pid  5485] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5485] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5485] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5485] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5485] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5485] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5485] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[65]}, 88) = 65
[pid  5485] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5485] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5485] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5504 attached
 <unfinished ...>
[pid  5504] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  5504] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  5504] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5504] open("./file0", O_RDONLY)   = 5
[pid  5504] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5485] <... futex resumed>)        = 0
[pid  5504] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5485] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5504] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5485] <... futex resumed>)        = 0
[pid  5504] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  109.436617][ T5486] BTRFS info (device loop0): balance: start -d -m
[  109.446811][ T5486] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  109.475171][ T5486] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5485] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5504] <... ioctl resumed>)        = 0
[pid  5504] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  109.638205][ T5486] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  109.662569][ T5486] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  5504] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5486] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5486] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5486] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5485] close(3)                    = 0
[pid  5485] close(4)                    = 0
[pid  5485] close(5)                    = 0
[  109.681656][ T5486] BTRFS info (device loop0): balance: ended with status: 0
[pid  5485] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5485] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5485] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5485] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5485] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5485] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5485] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5485] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5485] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5485] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5485] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5485] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5485] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5485] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5485] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5485] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5485] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5485] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5485] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5485] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5485] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5485] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5485] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5485] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5485] exit_group(0 <unfinished ...>
[pid  5504] <... futex resumed>)        = ?
[pid  5486] <... futex resumed>)        = ?
[pid  5485] <... exit_group resumed>)   = ?
[pid  5504] +++ exited with 0 +++
[pid  5486] +++ exited with 0 +++
[pid  5485] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=63, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=44 /* 0.44 s */} ---
[pid  5073] umount2("./20", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./20", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./20/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[  109.840997][ T5486] syz-executor397 (5486) used greatest stack depth: 20848 bytes left
[pid  5073] newfstatat(AT_FDCWD, "./20/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./20/binderfs")     = 0
[pid  5073] umount2("./20/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./20/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./20/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./20/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./20/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./20/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./20")               = 0
[pid  5073] mkdir("./21", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5505 attached
 <unfinished ...>
[pid  5505] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 66
[pid  5505] chdir("./21")               = 0
[pid  5505] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5505] setpgid(0, 0)               = 0
[pid  5505] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5505] write(3, "1000", 4)         = 4
[pid  5505] close(3)                    = 0
[pid  5505] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5505] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5505] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5505] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5505] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5505] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5506 attached
 <unfinished ...>
[pid  5506] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  5506] set_robust_list(0x7f8785c4c9a0, 24) = 0
[pid  5506] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5505] <... clone3 resumed> => {parent_tid=[67]}, 88) = 67
[pid  5506] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5505] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5506] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5505] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5505] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5506] <... futex resumed>)        = 0
[pid  5506] memfd_create("syzkaller", 0 <unfinished ...>
[pid  5505] <... futex resumed>)        = 1
[pid  5505] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5506] <... memfd_create resumed>) = 3
[pid  5506] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5506] 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) = 16777216
[pid  5506] munmap(0x7f877d82c000, 138412032) = 0
[pid  5506] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5506] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5506] close(3)                    = 0
[pid  5506] mkdir("./file0", 0777)      = 0
[  110.367531][ T5506] loop0: detected capacity change from 0 to 32768
[  110.392405][ T5506] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5506)
[  110.407575][ T5506] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  110.416879][ T5506] BTRFS info (device loop0): force clearing of disk cache
[  110.424055][ T5506] BTRFS info (device loop0): setting nodatasum
[  110.430217][ T5506] BTRFS info (device loop0): allowing degraded mounts
[  110.437023][ T5506] BTRFS info (device loop0): enabling disk space caching
[  110.444118][ T5506] BTRFS info (device loop0): disk space caching is enabled
[  110.466565][ T5506] BTRFS info (device loop0): enabling ssd optimizations
[  110.473530][ T5506] BTRFS info (device loop0): auto enabling async discard
[  110.482049][ T5506] BTRFS info (device loop0): rebuilding free space tree
[  110.493790][ T5506] BTRFS info (device loop0): disabling free space tree
[  110.500736][ T5506] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  5506] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5506] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5506] chdir("./file0")            = 0
[pid  5506] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5506] close(4)                    = 0
[pid  5506] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5506] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5505] <... futex resumed>)        = 0
[pid  5505] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5506] <... futex resumed>)        = 0
[pid  5506] open("./file0", O_RDONLY <unfinished ...>
[pid  5505] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5506] <... open resumed>)         = 4
[  110.510436][ T5506] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  110.523838][ T5506] BTRFS info (device loop0): checking UUID tree
[pid  5506] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5505] <... futex resumed>)        = 0
[pid  5505] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5505] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5506] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  5506] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5505] <... futex resumed>)        = 0
[pid  5505] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5506] 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}} <unfinished ...>
[pid  5505] <... futex resumed>)        = 0
[  110.622381][ T5506] BTRFS info (device loop0): balance: start -d -m
[  110.631813][ T5506] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  5505] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5505] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5505] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5505] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5505] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5505] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[68]}, 88) = 68
[pid  5505] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5505] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5505] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5524 attached
 <unfinished ...>
[pid  5524] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  5524] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  5524] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5524] open("./file0", O_RDONLY)   = 5
[pid  5524] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5505] <... futex resumed>)        = 0
[pid  5524] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5505] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5524] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5505] <... futex resumed>)        = 0
[pid  5524] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  110.663395][ T5506] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5505] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5524] <... ioctl resumed>)        = 0
[pid  5524] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  110.786602][ T5506] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  110.812504][ T5506] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  5524] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5506] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5506] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5505] close(3 <unfinished ...>
[pid  5506] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5505] <... close resumed>)        = 0
[pid  5505] close(4)                    = 0
[pid  5505] close(5)                    = 0
[pid  5505] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5505] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5505] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5505] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5505] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5505] close(11)                   = -1 EBADF (Bad file descriptor)
[  110.831945][ T5506] BTRFS info (device loop0): balance: ended with status: 0
[pid  5505] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5505] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5505] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5505] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5505] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5505] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5505] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5505] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5505] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5505] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5505] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5505] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5505] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5505] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5505] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5505] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5505] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5505] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5505] exit_group(0 <unfinished ...>
[pid  5506] <... futex resumed>)        = ?
[pid  5524] <... futex resumed>)        = ?
[pid  5505] <... exit_group resumed>)   = ?
[pid  5506] +++ exited with 0 +++
[pid  5524] +++ exited with 0 +++
[pid  5505] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=66, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=41 /* 0.41 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./21", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./21", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./21/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./21/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./21/binderfs")     = 0
[pid  5073] umount2("./21/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./21/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./21/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./21/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./21/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./21/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./21")               = 0
[pid  5073] mkdir("./22", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5525 attached
, child_tidptr=0x5555570a9690) = 69
[pid  5525] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5525] chdir("./22")               = 0
[pid  5525] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5525] setpgid(0, 0)               = 0
[pid  5525] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5525] write(3, "1000", 4)         = 4
[pid  5525] close(3)                    = 0
[pid  5525] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5525] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5525] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5525] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5525] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5525] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5526 attached
 <unfinished ...>
[pid  5526] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  5525] <... clone3 resumed> => {parent_tid=[70]}, 88) = 70
[pid  5526] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5525] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5526] <... set_robust_list resumed>) = 0
[pid  5526] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5525] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5526] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5525] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5526] memfd_create("syzkaller", 0 <unfinished ...>
[pid  5525] <... futex resumed>)        = 0
[pid  5525] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5526] <... memfd_create resumed>) = 3
[pid  5526] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5526] 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) = 16777216
[pid  5526] munmap(0x7f877d82c000, 138412032) = 0
[pid  5526] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5526] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5526] close(3)                    = 0
[pid  5526] mkdir("./file0", 0777)      = 0
[  111.446363][ T5526] loop0: detected capacity change from 0 to 32768
[  111.471095][ T5526] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5526)
[  111.486212][ T5526] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  111.495470][ T5526] BTRFS info (device loop0): force clearing of disk cache
[  111.502564][ T5526] BTRFS info (device loop0): setting nodatasum
[  111.508751][ T5526] BTRFS info (device loop0): allowing degraded mounts
[  111.515561][ T5526] BTRFS info (device loop0): enabling disk space caching
[  111.522580][ T5526] BTRFS info (device loop0): disk space caching is enabled
[  111.544795][ T5526] BTRFS info (device loop0): enabling ssd optimizations
[  111.551749][ T5526] BTRFS info (device loop0): auto enabling async discard
[  111.560645][ T5526] BTRFS info (device loop0): rebuilding free space tree
[  111.573463][ T5526] BTRFS info (device loop0): disabling free space tree
[  111.580806][ T5526] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  5526] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5526] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5526] chdir("./file0")            = 0
[pid  5526] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5526] close(4)                    = 0
[pid  5526] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5526] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5525] <... futex resumed>)        = 0
[pid  5525] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5525] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5526] <... futex resumed>)        = 0
[  111.590688][ T5526] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  111.604327][ T5526] BTRFS info (device loop0): checking UUID tree
[pid  5526] open("./file0", O_RDONLY)   = 4
[pid  5526] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5525] <... futex resumed>)        = 0
[pid  5526] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  5525] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5526] <... ioctl resumed>)        = 0
[pid  5525] <... futex resumed>)        = 0
[pid  5526] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5525] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5526] <... futex resumed>)        = 0
[pid  5525] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5526] 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}} <unfinished ...>
[pid  5525] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5525] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5525] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5525] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5525] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5525] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5525] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[71]}, 88) = 71
[pid  5525] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5525] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5525] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5544 attached
 <unfinished ...>
[pid  5544] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  5544] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  5544] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5544] open("./file0", O_RDONLY)   = 5
[pid  5544] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5525] <... futex resumed>)        = 0
[pid  5544] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5525] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5544] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5525] <... futex resumed>)        = 0
[  111.669652][ T5526] BTRFS info (device loop0): balance: start -d -m
[  111.679867][ T5526] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  111.709620][ T5526] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5544] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  5525] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5544] <... ioctl resumed>)        = 0
[pid  5544] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  111.873642][ T5526] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  111.902881][ T5526] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  5544] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5526] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5526] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5526] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5525] close(3)                    = 0
[pid  5525] close(4)                    = 0
[pid  5525] close(5)                    = 0
[pid  5525] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5525] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5525] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5525] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5525] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5525] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5525] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5525] close(13)                   = -1 EBADF (Bad file descriptor)
[  111.922546][ T5526] BTRFS info (device loop0): balance: ended with status: 0
[pid  5525] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5525] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5525] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5525] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5525] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5525] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5525] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5525] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5525] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5525] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5525] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5525] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5525] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5525] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5525] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5525] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5525] exit_group(0 <unfinished ...>
[pid  5544] <... futex resumed>)        = ?
[pid  5526] <... futex resumed>)        = ?
[pid  5525] <... exit_group resumed>)   = ?
[pid  5544] +++ exited with 0 +++
[pid  5526] +++ exited with 0 +++
[pid  5525] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=69, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=40 /* 0.40 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./22", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./22", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./22/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./22/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./22/binderfs")     = 0
[pid  5073] umount2("./22/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./22/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./22/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./22/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./22/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./22/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./22")               = 0
[pid  5073] mkdir("./23", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5545 attached
 <unfinished ...>
[pid  5545] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5545] chdir("./23" <unfinished ...>
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 72
[pid  5545] <... chdir resumed>)        = 0
[pid  5545] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5545] setpgid(0, 0)               = 0
[pid  5545] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5545] write(3, "1000", 4)         = 4
[pid  5545] close(3)                    = 0
[pid  5545] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5545] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5545] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5545] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5545] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5545] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5546 attached
 <unfinished ...>
[pid  5546] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  5545] <... clone3 resumed> => {parent_tid=[73]}, 88) = 73
[pid  5546] <... rseq resumed>)         = 0
[pid  5545] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5546] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5545] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5546] <... set_robust_list resumed>) = 0
[pid  5545] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5546] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5545] <... futex resumed>)        = 0
[pid  5546] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5545] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5546] memfd_create("syzkaller", 0) = 3
[pid  5546] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5546] 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) = 16777216
[pid  5546] munmap(0x7f877d82c000, 138412032) = 0
[pid  5546] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5546] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5546] close(3)                    = 0
[pid  5546] mkdir("./file0", 0777)      = 0
[  112.481636][ T5546] loop0: detected capacity change from 0 to 32768
[  112.505029][ T5546] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5546)
[  112.521756][ T5546] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  112.531045][ T5546] BTRFS info (device loop0): force clearing of disk cache
[  112.538199][ T5546] BTRFS info (device loop0): setting nodatasum
[  112.544393][ T5546] BTRFS info (device loop0): allowing degraded mounts
[  112.551163][ T5546] BTRFS info (device loop0): enabling disk space caching
[  112.558249][ T5546] BTRFS info (device loop0): disk space caching is enabled
[  112.579984][ T5546] BTRFS info (device loop0): enabling ssd optimizations
[  112.587082][ T5546] BTRFS info (device loop0): auto enabling async discard
[  112.595395][ T5546] BTRFS info (device loop0): rebuilding free space tree
[  112.608139][ T5546] BTRFS info (device loop0): disabling free space tree
[  112.615088][ T5546] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  5546] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5546] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5546] chdir("./file0")            = 0
[pid  5546] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5546] close(4)                    = 0
[pid  5546] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5545] <... futex resumed>)        = 0
[pid  5546] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5545] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5546] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5545] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5546] open("./file0", O_RDONLY)   = 4
[  112.625036][ T5546] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  112.638956][ T5546] BTRFS info (device loop0): checking UUID tree
[pid  5546] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5545] <... futex resumed>)        = 0
[pid  5545] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5546] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  5545] <... futex resumed>)        = 0
[pid  5546] <... ioctl resumed>)        = 0
[pid  5545] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5546] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5546] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5545] <... futex resumed>)        = 0
[pid  5545] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5546] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5545] <... futex resumed>)        = 0
[pid  5546] 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}} <unfinished ...>
[pid  5545] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5545] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5545] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5545] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5545] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5545] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 5564 attached
 => {parent_tid=[74]}, 88) = 74
[pid  5564] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  5545] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5564] <... rseq resumed>)         = 0
[pid  5545] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5564] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  5545] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5564] <... set_robust_list resumed>) = 0
[pid  5545] <... futex resumed>)        = 0
[pid  5564] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5545] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5564] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5564] open("./file0", O_RDONLY)   = 5
[pid  5564] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5545] <... futex resumed>)        = 0
[pid  5564] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5545] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5564] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5545] <... futex resumed>)        = 0
[pid  5564] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  112.748842][ T5546] BTRFS info (device loop0): balance: start -d -m
[  112.758824][ T5546] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  112.786040][ T5546] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5545] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5564] <... ioctl resumed>)        = 0
[pid  5564] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  112.872070][ T5546] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  5564] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5546] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5546] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5546] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5545] close(3)                    = 0
[pid  5545] close(4)                    = 0
[pid  5545] close(5)                    = 0
[pid  5545] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5545] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5545] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5545] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5545] close(10)                   = -1 EBADF (Bad file descriptor)
[  112.936809][ T5546] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  112.956512][ T5546] BTRFS info (device loop0): balance: ended with status: 0
[pid  5545] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5545] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5545] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5545] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5545] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5545] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5545] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5545] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5545] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5545] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5545] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5545] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5545] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5545] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5545] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5545] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5545] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5545] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5545] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5545] exit_group(0 <unfinished ...>
[pid  5564] <... futex resumed>)        = ?
[pid  5546] <... futex resumed>)        = ?
[pid  5545] <... exit_group resumed>)   = ?
[pid  5564] +++ exited with 0 +++
[pid  5546] +++ exited with 0 +++
[pid  5545] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=72, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=42 /* 0.42 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./23", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./23", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./23/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./23/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./23/binderfs")     = 0
[pid  5073] umount2("./23/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./23/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./23/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./23/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./23/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./23/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./23")               = 0
[pid  5073] mkdir("./24", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555570a9690) = 75
./strace-static-x86_64: Process 5565 attached
[pid  5565] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5565] chdir("./24")               = 0
[pid  5565] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5565] setpgid(0, 0)               = 0
[pid  5565] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5565] write(3, "1000", 4)         = 4
[pid  5565] close(3)                    = 0
[pid  5565] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5565] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5565] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5565] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5565] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5565] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5566 attached
 <unfinished ...>
[pid  5566] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  5565] <... clone3 resumed> => {parent_tid=[76]}, 88) = 76
[pid  5566] <... rseq resumed>)         = 0
[pid  5565] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5566] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5565] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5566] <... set_robust_list resumed>) = 0
[pid  5565] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5566] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5565] <... futex resumed>)        = 0
[pid  5565] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5566] memfd_create("syzkaller", 0) = 3
[pid  5566] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5566] 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) = 16777216
[pid  5566] munmap(0x7f877d82c000, 138412032) = 0
[pid  5566] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5566] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5566] close(3)                    = 0
[pid  5566] mkdir("./file0", 0777)      = 0
[  113.514166][ T5566] loop0: detected capacity change from 0 to 32768
[  113.538102][ T5566] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5566)
[  113.553976][ T5566] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  113.563228][ T5566] BTRFS info (device loop0): force clearing of disk cache
[  113.570382][ T5566] BTRFS info (device loop0): setting nodatasum
[  113.576583][ T5566] BTRFS info (device loop0): allowing degraded mounts
[  113.583340][ T5566] BTRFS info (device loop0): enabling disk space caching
[  113.590393][ T5566] BTRFS info (device loop0): disk space caching is enabled
[  113.612371][ T5566] BTRFS info (device loop0): enabling ssd optimizations
[  113.619403][ T5566] BTRFS info (device loop0): auto enabling async discard
[  113.628216][ T5566] BTRFS info (device loop0): rebuilding free space tree
[  113.642571][ T5566] BTRFS info (device loop0): disabling free space tree
[  113.649798][ T5566] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  5566] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5566] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5566] chdir("./file0")            = 0
[pid  5566] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5566] close(4)                    = 0
[pid  5566] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5566] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5565] <... futex resumed>)        = 0
[pid  5565] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5566] <... futex resumed>)        = 0
[pid  5565] <... futex resumed>)        = 1
[pid  5565] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[  113.659625][ T5566] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  113.672711][ T5566] BTRFS info (device loop0): checking UUID tree
[pid  5566] open("./file0", O_RDONLY)   = 4
[pid  5566] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5566] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5565] <... futex resumed>)        = 0
[pid  5565] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5566] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5565] <... futex resumed>)        = 0
[pid  5566] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  5565] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5566] <... ioctl resumed>)        = 0
[pid  5566] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5565] <... futex resumed>)        = 0
[pid  5566] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5565] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5566] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5566] 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}} <unfinished ...>
[pid  5565] <... futex resumed>)        = 0
[pid  5565] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5565] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5565] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5565] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5565] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5565] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 5584 attached
 => {parent_tid=[77]}, 88) = 77
[pid  5565] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5584] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  5565] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5584] <... rseq resumed>)         = 0
[pid  5565] <... futex resumed>)        = 0
[pid  5584] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  5565] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5584] <... set_robust_list resumed>) = 0
[pid  5584] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5584] open("./file0", O_RDONLY)   = 5
[pid  5584] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5565] <... futex resumed>)        = 0
[pid  5584] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  5565] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  113.761636][ T5566] BTRFS info (device loop0): balance: start -d -m
[  113.771976][ T5566] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  113.801360][ T5566] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5565] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5584] <... ioctl resumed>)        = 0
[pid  5584] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5584] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5566] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5566] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5566] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5565] close(3)                    = 0
[pid  5565] close(4)                    = 0
[pid  5565] close(5)                    = 0
[pid  5565] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5565] close(7)                    = -1 EBADF (Bad file descriptor)
[  113.958347][ T5566] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  113.982330][ T5566] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  114.001275][ T5566] BTRFS info (device loop0): balance: ended with status: 0
[pid  5565] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5565] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5565] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5565] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5565] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5565] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5565] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5565] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5565] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5565] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5565] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5565] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5565] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5565] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5565] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5565] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5565] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5565] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5565] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5565] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5565] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5565] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5565] exit_group(0 <unfinished ...>
[pid  5584] <... futex resumed>)        = ?
[pid  5566] <... futex resumed>)        = ?
[pid  5565] <... exit_group resumed>)   = ?
[pid  5584] +++ exited with 0 +++
[pid  5566] +++ exited with 0 +++
[pid  5565] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=75, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=39 /* 0.39 s */} ---
[pid  5073] umount2("./24", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./24", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./24/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./24/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./24/binderfs")     = 0
[pid  5073] umount2("./24/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./24/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./24/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./24/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./24/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./24/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./24")               = 0
[pid  5073] mkdir("./25", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5585 attached
 <unfinished ...>
[pid  5585] set_robust_list(0x5555570a96a0, 24 <unfinished ...>
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 78
[pid  5585] <... set_robust_list resumed>) = 0
[pid  5585] chdir("./25")               = 0
[pid  5585] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5585] setpgid(0, 0)               = 0
[pid  5585] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5585] write(3, "1000", 4)         = 4
[pid  5585] close(3)                    = 0
[pid  5585] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5585] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5585] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5585] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5585] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5585] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5586 attached
 <unfinished ...>
[pid  5586] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  5585] <... clone3 resumed> => {parent_tid=[79]}, 88) = 79
[pid  5585] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5585] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5586] <... rseq resumed>)         = 0
[pid  5586] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5585] <... futex resumed>)        = 0
[pid  5586] <... set_robust_list resumed>) = 0
[pid  5585] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5586] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5586] memfd_create("syzkaller", 0) = 3
[pid  5586] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5586] 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) = 16777216
[pid  5586] munmap(0x7f877d82c000, 138412032) = 0
[pid  5586] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5586] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5586] close(3)                    = 0
[pid  5586] mkdir("./file0", 0777)      = 0
[  114.643840][ T5586] loop0: detected capacity change from 0 to 32768
[  114.663566][ T5586] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5586)
[  114.678998][ T5586] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  114.688356][ T5586] BTRFS info (device loop0): force clearing of disk cache
[  114.695515][ T5586] BTRFS info (device loop0): setting nodatasum
[  114.701656][ T5586] BTRFS info (device loop0): allowing degraded mounts
[  114.708525][ T5586] BTRFS info (device loop0): enabling disk space caching
[  114.715791][ T5586] BTRFS info (device loop0): disk space caching is enabled
[  114.737529][ T5586] BTRFS info (device loop0): enabling ssd optimizations
[  114.744631][ T5586] BTRFS info (device loop0): auto enabling async discard
[  114.752784][ T5586] BTRFS info (device loop0): rebuilding free space tree
[  114.766428][ T5586] BTRFS info (device loop0): disabling free space tree
[  114.773311][ T5586] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  114.782996][ T5586] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  5586] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5586] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5586] chdir("./file0")            = 0
[pid  5586] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5586] close(4)                    = 0
[pid  5586] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5585] <... futex resumed>)        = 0
[pid  5586] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable)
[pid  5585] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5586] open("./file0", O_RDONLY <unfinished ...>
[pid  5585] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5586] <... open resumed>)         = 4
[pid  5586] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5586] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5585] <... futex resumed>)        = 0
[pid  5585] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5586] <... futex resumed>)        = 0
[pid  5585] <... futex resumed>)        = 1
[pid  5586] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  5585] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5586] <... ioctl resumed>)        = 0
[pid  5586] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5585] <... futex resumed>)        = 0
[pid  5585] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5586] 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}} <unfinished ...>
[pid  5585] <... futex resumed>)        = 0
[  114.796105][ T5586] BTRFS info (device loop0): checking UUID tree
[pid  5585] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5585] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  5585] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5585] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5585] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5585] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5585] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 5604 attached
 => {parent_tid=[80]}, 88) = 80
[pid  5604] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  5585] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5604] <... rseq resumed>)         = 0
[pid  5585] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5604] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  5585] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5604] <... set_robust_list resumed>) = 0
[pid  5585] <... futex resumed>)        = 0
[pid  5604] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5585] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5604] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5604] open("./file0", O_RDONLY)   = 5
[pid  5604] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5585] <... futex resumed>)        = 0
[pid  5585] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5604] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  5585] <... futex resumed>)        = 0
[  114.860024][ T5586] BTRFS info (device loop0): balance: start -d -m
[  114.869277][ T5586] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  114.893838][ T5586] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5585] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[  114.990536][ T5586] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  5604] <... ioctl resumed>)        = 0
[pid  5604] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5604] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5586] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5586] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5586] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5585] close(3)                    = 0
[pid  5585] close(4)                    = 0
[pid  5585] close(5)                    = 0
[pid  5585] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5585] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5585] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5585] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5585] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5585] close(11)                   = -1 EBADF (Bad file descriptor)
[  115.086149][ T5586] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  115.106311][ T5586] BTRFS info (device loop0): balance: ended with status: 0
[pid  5585] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5585] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5585] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5585] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5585] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5585] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5585] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5585] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5585] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5585] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5585] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5585] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5585] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5585] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5585] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5585] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5585] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5585] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5585] exit_group(0 <unfinished ...>
[pid  5586] <... futex resumed>)        = ?
[pid  5585] <... exit_group resumed>)   = ?
[pid  5604] <... futex resumed>)        = ?
[pid  5604] +++ exited with 0 +++
[pid  5586] +++ exited with 0 +++
[pid  5585] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=78, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=41 /* 0.41 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./25", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./25", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./25/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./25/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./25/binderfs")     = 0
[pid  5073] umount2("./25/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./25/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./25/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./25/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./25/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./25/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./25")               = 0
[pid  5073] mkdir("./26", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5605 attached
 <unfinished ...>
[pid  5605] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 81
[pid  5605] chdir("./26")               = 0
[pid  5605] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5605] setpgid(0, 0)               = 0
[pid  5605] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5605] write(3, "1000", 4)         = 4
[pid  5605] close(3)                    = 0
[pid  5605] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5605] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5605] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5605] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5605] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5605] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5606 attached
 <unfinished ...>
[pid  5606] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  5605] <... clone3 resumed> => {parent_tid=[82]}, 88) = 82
[pid  5606] <... rseq resumed>)         = 0
[pid  5605] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5606] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5605] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5606] <... set_robust_list resumed>) = 0
[pid  5605] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5606] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5605] <... futex resumed>)        = 0
[pid  5606] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5605] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5606] memfd_create("syzkaller", 0) = 3
[pid  5606] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5606] 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) = 16777216
[pid  5606] munmap(0x7f877d82c000, 138412032) = 0
[pid  5606] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5606] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5606] close(3)                    = 0
[pid  5606] mkdir("./file0", 0777)      = 0
[  115.691408][ T5606] loop0: detected capacity change from 0 to 32768
[  115.715541][ T5606] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5606)
[  115.730976][ T5606] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  115.740256][ T5606] BTRFS info (device loop0): force clearing of disk cache
[  115.747401][ T5606] BTRFS info (device loop0): setting nodatasum
[  115.753560][ T5606] BTRFS info (device loop0): allowing degraded mounts
[  115.760365][ T5606] BTRFS info (device loop0): enabling disk space caching
[  115.767409][ T5606] BTRFS info (device loop0): disk space caching is enabled
[  115.788740][ T5606] BTRFS info (device loop0): enabling ssd optimizations
[  115.795952][ T5606] BTRFS info (device loop0): auto enabling async discard
[  115.804599][ T5606] BTRFS info (device loop0): rebuilding free space tree
[  115.816798][ T5606] BTRFS info (device loop0): disabling free space tree
[  115.823696][ T5606] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  5606] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5606] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5606] chdir("./file0")            = 0
[pid  5606] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5606] close(4)                    = 0
[pid  5606] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5605] <... futex resumed>)        = 0
[pid  5606] <... futex resumed>)        = 1
[pid  5605] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5606] open("./file0", O_RDONLY <unfinished ...>
[pid  5605] <... futex resumed>)        = 0
[pid  5605] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5606] <... open resumed>)         = 4
[pid  5606] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5605] <... futex resumed>)        = 0
[pid  5605] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5605] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[  115.833373][ T5606] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  115.846415][ T5606] BTRFS info (device loop0): checking UUID tree
[pid  5606] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  5606] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5606] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5605] <... futex resumed>)        = 0
[pid  5605] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5606] <... futex resumed>)        = 0
[pid  5605] <... futex resumed>)        = 1
[pid  5606] 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}} <unfinished ...>
[pid  5605] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5605] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5605] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5605] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5605] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5605] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[83]}, 88) = 83
[pid  5605] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5605] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5605] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5624 attached
 <unfinished ...>
[pid  5624] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  5624] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  5624] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5624] open("./file0", O_RDONLY)   = 5
[pid  5624] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5605] <... futex resumed>)        = 0
[pid  5624] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5605] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5624] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5605] <... futex resumed>)        = 0
[pid  5624] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  115.923503][ T5606] BTRFS info (device loop0): balance: start -d -m
[  115.933203][ T5606] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  115.959017][ T5606] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5605] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[  116.056621][ T5606] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  5624] <... ioctl resumed>)        = 0
[pid  5624] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5624] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5606] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5606] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5606] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5605] close(3)                    = 0
[pid  5605] close(4)                    = 0
[pid  5605] close(5)                    = 0
[pid  5605] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5605] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5605] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5605] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5605] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5605] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5605] close(12)                   = -1 EBADF (Bad file descriptor)
[  116.155760][ T5606] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  116.176706][ T5606] BTRFS info (device loop0): balance: ended with status: 0
[pid  5605] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5605] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5605] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5605] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5605] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5605] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5605] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5605] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5605] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5605] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5605] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5605] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5605] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5605] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5605] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5605] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5605] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5605] exit_group(0 <unfinished ...>
[pid  5624] <... futex resumed>)        = ?
[pid  5605] <... exit_group resumed>)   = ?
[pid  5606] <... futex resumed>)        = ?
[pid  5624] +++ exited with 0 +++
[pid  5606] +++ exited with 0 +++
[pid  5605] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=81, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=44 /* 0.44 s */} ---
[pid  5073] umount2("./26", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./26", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./26/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./26/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./26/binderfs")     = 0
[pid  5073] umount2("./26/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./26/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./26/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./26/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./26/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./26/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./26")               = 0
[pid  5073] mkdir("./27", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5625 attached
, child_tidptr=0x5555570a9690) = 84
[pid  5625] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5625] chdir("./27")               = 0
[pid  5625] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5625] setpgid(0, 0)               = 0
[pid  5625] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5625] write(3, "1000", 4)         = 4
[pid  5625] close(3)                    = 0
[pid  5625] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5625] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5625] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5625] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5625] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5625] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5626 attached
 => {parent_tid=[85]}, 88) = 85
[pid  5626] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  5626] set_robust_list(0x7f8785c4c9a0, 24) = 0
[pid  5626] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5625] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5626] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5625] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5625] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5626] <... futex resumed>)        = 0
[pid  5625] <... futex resumed>)        = 1
[pid  5625] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5626] memfd_create("syzkaller", 0) = 3
[pid  5626] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5626] 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) = 16777216
[pid  5626] munmap(0x7f877d82c000, 138412032) = 0
[pid  5626] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5626] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5626] close(3)                    = 0
[pid  5626] mkdir("./file0", 0777)      = 0
[  116.893198][ T5626] loop0: detected capacity change from 0 to 32768
[  116.908034][ T5626] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5626)
[  116.923146][ T5626] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  116.932515][ T5626] BTRFS info (device loop0): force clearing of disk cache
[  116.939699][ T5626] BTRFS info (device loop0): setting nodatasum
[  116.945946][ T5626] BTRFS info (device loop0): allowing degraded mounts
[  116.952725][ T5626] BTRFS info (device loop0): enabling disk space caching
[  116.960098][ T5626] BTRFS info (device loop0): disk space caching is enabled
[  116.981742][ T5626] BTRFS info (device loop0): enabling ssd optimizations
[  116.988714][ T5626] BTRFS info (device loop0): auto enabling async discard
[  116.996822][ T5626] BTRFS info (device loop0): rebuilding free space tree
[  117.009405][ T5626] BTRFS info (device loop0): disabling free space tree
[  117.016369][ T5626] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  117.026031][ T5626] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  5626] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5626] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5626] chdir("./file0")            = 0
[pid  5626] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5626] close(4)                    = 0
[pid  5626] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5626] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5625] <... futex resumed>)        = 0
[pid  5625] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5626] <... futex resumed>)        = 0
[pid  5625] <... futex resumed>)        = 1
[pid  5626] open("./file0", O_RDONLY <unfinished ...>
[pid  5625] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5626] <... open resumed>)         = 4
[  117.039744][ T5626] BTRFS info (device loop0): checking UUID tree
[pid  5626] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5625] <... futex resumed>)        = 0
[pid  5626] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  5625] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5626] <... ioctl resumed>)        = 0
[pid  5625] <... futex resumed>)        = 0
[pid  5625] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5626] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5625] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5626] <... futex resumed>)        = 0
[pid  5625] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5626] 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}} <unfinished ...>
[pid  5625] <... futex resumed>)        = 0
[pid  5625] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5625] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5625] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5625] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[  117.112239][ T5626] BTRFS info (device loop0): balance: start -d -m
[  117.120747][ T5626] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  117.149338][ T5626] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5625] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5625] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 5644 attached
 => {parent_tid=[86]}, 88) = 86
[pid  5644] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  5625] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5625] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5644] <... rseq resumed>)         = 0
[pid  5625] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5644] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  5644] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5644] open("./file0", O_RDONLY)   = 5
[pid  5644] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5625] <... futex resumed>)        = 0
[pid  5625] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5625] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5644] <... futex resumed>)        = 1
[  117.200060][ T5626] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  5644] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  5625] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  5644] <... ioctl resumed>)        = 0
[pid  5644] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  117.288866][ T5626] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  5644] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5626] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5626] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5626] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5625] close(3)                    = 0
[pid  5625] close(4)                    = 0
[pid  5625] close(5)                    = 0
[pid  5625] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5625] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5625] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5625] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5625] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5625] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5625] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5625] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5625] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5625] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5625] close(16)                   = -1 EBADF (Bad file descriptor)
[  117.352981][ T5626] BTRFS info (device loop0): balance: ended with status: 0
[pid  5625] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5625] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5625] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5625] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5625] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5625] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5625] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5625] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5625] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5625] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5625] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5625] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5625] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5625] exit_group(0 <unfinished ...>
[pid  5644] <... futex resumed>)        = ?
[pid  5626] <... futex resumed>)        = ?
[pid  5625] <... exit_group resumed>)   = ?
[pid  5644] +++ exited with 0 +++
[pid  5626] +++ exited with 0 +++
[pid  5625] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=84, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=40 /* 0.40 s */} ---
[pid  5073] umount2("./27", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./27", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./27/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./27/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./27/binderfs")     = 0
[pid  5073] umount2("./27/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./27/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./27/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./27/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./27/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./27/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./27")               = 0
[pid  5073] mkdir("./28", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5645 attached
, child_tidptr=0x5555570a9690) = 87
[pid  5645] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5645] chdir("./28")               = 0
[pid  5645] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5645] setpgid(0, 0)               = 0
[pid  5645] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5645] write(3, "1000", 4)         = 4
[pid  5645] close(3)                    = 0
[pid  5645] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5645] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5645] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5645] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5645] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5645] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5646 attached
 <unfinished ...>
[pid  5646] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  5646] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5645] <... clone3 resumed> => {parent_tid=[88]}, 88) = 88
[pid  5646] <... set_robust_list resumed>) = 0
[pid  5645] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5646] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5645] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5646] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5645] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5646] memfd_create("syzkaller", 0 <unfinished ...>
[pid  5645] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5646] <... memfd_create resumed>) = 3
[pid  5646] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5646] 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) = 16777216
[pid  5646] munmap(0x7f877d82c000, 138412032) = 0
[pid  5646] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5646] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5646] close(3)                    = 0
[pid  5646] mkdir("./file0", 0777)      = 0
[  117.902564][ T5646] loop0: detected capacity change from 0 to 32768
[  117.923474][ T5646] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5646)
[  117.939150][ T5646] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  117.948576][ T5646] BTRFS info (device loop0): force clearing of disk cache
[  117.955740][ T5646] BTRFS info (device loop0): setting nodatasum
[  117.961909][ T5646] BTRFS info (device loop0): allowing degraded mounts
[  117.968718][ T5646] BTRFS info (device loop0): enabling disk space caching
[  117.975785][ T5646] BTRFS info (device loop0): disk space caching is enabled
[  117.997775][ T5646] BTRFS info (device loop0): enabling ssd optimizations
[  118.004838][ T5646] BTRFS info (device loop0): auto enabling async discard
[  118.012742][ T5646] BTRFS info (device loop0): rebuilding free space tree
[  118.024840][ T5646] BTRFS info (device loop0): disabling free space tree
[  118.031732][ T5646] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  118.041458][ T5646] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  5646] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5646] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5646] chdir("./file0")            = 0
[pid  5646] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5646] close(4)                    = 0
[pid  5646] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5646] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5645] <... futex resumed>)        = 0
[pid  5646] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5645] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5646] open("./file0", O_RDONLY <unfinished ...>
[pid  5645] <... futex resumed>)        = 0
[pid  5645] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5646] <... open resumed>)         = 4
[pid  5646] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5646] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5645] <... futex resumed>)        = 0
[pid  5645] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5646] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5645] <... futex resumed>)        = 0
[pid  5645] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5646] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[  118.054881][ T5646] BTRFS info (device loop0): checking UUID tree
[pid  5646] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5645] <... futex resumed>)        = 0
[pid  5646] 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}} <unfinished ...>
[pid  5645] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  118.120925][ T5646] BTRFS info (device loop0): balance: start -d -m
[  118.130990][ T5646] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  5645] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5645] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5645] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5645] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5645] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5645] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[89]}, 88) = 89
[pid  5645] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5645] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5645] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5664 attached
 <unfinished ...>
[pid  5664] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  5664] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  5664] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5664] open("./file0", O_RDONLY)   = 5
[pid  5664] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5645] <... futex resumed>)        = 0
[pid  5664] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5645] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5664] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5645] <... futex resumed>)        = 0
[pid  5664] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  118.163229][ T5646] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5645] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5664] <... ioctl resumed>)        = 0
[pid  5664] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5664] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5646] <... ioctl resumed>)        = -1 ENOSPC (No space left on device)
[pid  5646] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5645] close(3 <unfinished ...>
[pid  5646] <... futex resumed>)        = 0
[pid  5645] <... close resumed>)        = 0
[pid  5646] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5645] close(4)                    = 0
[pid  5645] close(5)                    = 0
[pid  5645] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5645] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5645] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5645] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5645] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5645] close(11)                   = -1 EBADF (Bad file descriptor)
[  118.301237][ T5646] BTRFS info (device loop0): 1 enospc errors during balance
[  118.308689][ T5646] BTRFS info (device loop0): balance: ended with status: -28
[pid  5645] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5645] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5645] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5645] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5645] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5645] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5645] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5645] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5645] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5645] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5645] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5645] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5645] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5645] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5645] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5645] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5645] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5645] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5645] exit_group(0 <unfinished ...>
[pid  5664] <... futex resumed>)        = ?
[pid  5664] +++ exited with 0 +++
[pid  5646] <... futex resumed>)        = ?
[pid  5646] +++ exited with 0 +++
[pid  5645] <... exit_group resumed>)   = ?
[pid  5645] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=87, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=37 /* 0.37 s */} ---
[pid  5073] umount2("./28", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./28", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./28/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./28/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./28/binderfs")     = 0
[pid  5073] umount2("./28/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./28/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./28/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./28/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./28/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./28/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./28")               = 0
[pid  5073] mkdir("./29", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5665 attached
, child_tidptr=0x5555570a9690) = 90
[pid  5665] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5665] chdir("./29")               = 0
[pid  5665] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5665] setpgid(0, 0)               = 0
[pid  5665] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5665] write(3, "1000", 4)         = 4
[pid  5665] close(3)                    = 0
[pid  5665] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5665] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5665] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5665] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5665] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5665] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5666 attached
 <unfinished ...>
[pid  5666] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  5665] <... clone3 resumed> => {parent_tid=[91]}, 88) = 91
[pid  5666] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5665] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5666] <... set_robust_list resumed>) = 0
[pid  5665] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5666] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5665] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5666] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5665] <... futex resumed>)        = 0
[pid  5666] memfd_create("syzkaller", 0 <unfinished ...>
[pid  5665] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5666] <... memfd_create resumed>) = 3
[pid  5666] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5666] 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) = 16777216
[pid  5666] munmap(0x7f877d82c000, 138412032) = 0
[pid  5666] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5666] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5666] close(3)                    = 0
[pid  5666] mkdir("./file0", 0777)      = 0
[  118.950979][ T5666] loop0: detected capacity change from 0 to 32768
[  118.976515][ T5666] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5666)
[  118.991829][ T5666] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  119.001133][ T5666] BTRFS info (device loop0): force clearing of disk cache
[  119.008277][ T5666] BTRFS info (device loop0): setting nodatasum
[  119.014497][ T5666] BTRFS info (device loop0): allowing degraded mounts
[  119.021263][ T5666] BTRFS info (device loop0): enabling disk space caching
[  119.028340][ T5666] BTRFS info (device loop0): disk space caching is enabled
[  119.050028][ T5666] BTRFS info (device loop0): enabling ssd optimizations
[  119.057068][ T5666] BTRFS info (device loop0): auto enabling async discard
[  119.065222][ T5666] BTRFS info (device loop0): rebuilding free space tree
[  119.077211][ T5666] BTRFS info (device loop0): disabling free space tree
[  119.084170][ T5666] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  5666] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5666] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5666] chdir("./file0")            = 0
[pid  5666] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5666] close(4)                    = 0
[pid  5666] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5665] <... futex resumed>)        = 0
[pid  5666] <... futex resumed>)        = 1
[pid  5665] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5666] open("./file0", O_RDONLY <unfinished ...>
[pid  5665] <... futex resumed>)        = 0
[pid  5666] <... open resumed>)         = 4
[pid  5665] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5666] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5665] <... futex resumed>)        = 0
[pid  5665] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5665] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5666] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  5666] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5666] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5665] <... futex resumed>)        = 0
[pid  5665] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5666] <... futex resumed>)        = 0
[pid  5665] <... futex resumed>)        = 1
[pid  5666] 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}} <unfinished ...>
[  119.093795][ T5666] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  119.107300][ T5666] BTRFS info (device loop0): checking UUID tree
[  119.153081][ T5666] BTRFS info (device loop0): balance: start -d -m
[  119.164786][ T5666] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  5665] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5665] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5665] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5665] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5665] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5665] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[92]}, 88) = 92
[pid  5665] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5665] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5665] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5684 attached
 <unfinished ...>
[pid  5684] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  5684] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  5684] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5684] open("./file0", O_RDONLY)   = 5
[pid  5684] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5665] <... futex resumed>)        = 0
[pid  5684] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5665] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5684] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5665] <... futex resumed>)        = 0
[pid  5684] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  119.194666][ T5666] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5665] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5665] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  5684] <... ioctl resumed>)        = 0
[pid  5684] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  119.367192][ T5666] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  119.392367][ T5666] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  5684] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5666] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5666] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5666] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5665] close(3)                    = 0
[pid  5665] close(4)                    = 0
[pid  5665] close(5)                    = 0
[pid  5665] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5665] close(7)                    = -1 EBADF (Bad file descriptor)
[  119.412337][ T5666] BTRFS info (device loop0): balance: ended with status: 0
[pid  5665] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5665] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5665] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5665] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5665] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5665] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5665] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5665] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5665] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5665] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5665] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5665] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5665] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5665] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5665] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5665] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5665] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5665] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5665] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5665] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5665] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5665] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5665] exit_group(0 <unfinished ...>
[pid  5684] <... futex resumed>)        = ?
[pid  5666] <... futex resumed>)        = ?
[pid  5665] <... exit_group resumed>)   = ?
[pid  5684] +++ exited with 0 +++
[pid  5666] +++ exited with 0 +++
[pid  5665] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=90, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=43 /* 0.43 s */} ---
[pid  5073] umount2("./29", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./29", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./29/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./29/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./29/binderfs")     = 0
[pid  5073] umount2("./29/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./29/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./29/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./29/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./29/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./29/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./29")               = 0
[pid  5073] mkdir("./30", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5685 attached
, child_tidptr=0x5555570a9690) = 93
[pid  5685] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5685] chdir("./30")               = 0
[pid  5685] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5685] setpgid(0, 0)               = 0
[pid  5685] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5685] write(3, "1000", 4)         = 4
[pid  5685] close(3)                    = 0
[pid  5685] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5685] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5685] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5685] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5685] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5685] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5686 attached
 <unfinished ...>
[pid  5686] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  5686] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5685] <... clone3 resumed> => {parent_tid=[94]}, 88) = 94
[pid  5686] <... set_robust_list resumed>) = 0
[pid  5685] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5686] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5685] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5686] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5685] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5686] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5685] <... futex resumed>)        = 0
[pid  5686] memfd_create("syzkaller", 0 <unfinished ...>
[pid  5685] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5686] <... memfd_create resumed>) = 3
[pid  5686] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5686] 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) = 16777216
[pid  5686] munmap(0x7f877d82c000, 138412032) = 0
[pid  5686] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5686] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5686] close(3)                    = 0
[pid  5686] mkdir("./file0", 0777)      = 0
[  120.050420][ T5686] loop0: detected capacity change from 0 to 32768
[  120.074689][ T5686] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5686)
[  120.089944][ T5686] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  120.099318][ T5686] BTRFS info (device loop0): force clearing of disk cache
[  120.106484][ T5686] BTRFS info (device loop0): setting nodatasum
[  120.112648][ T5686] BTRFS info (device loop0): allowing degraded mounts
[  120.119448][ T5686] BTRFS info (device loop0): enabling disk space caching
[  120.126496][ T5686] BTRFS info (device loop0): disk space caching is enabled
[  120.147707][ T5686] BTRFS info (device loop0): enabling ssd optimizations
[  120.154695][ T5686] BTRFS info (device loop0): auto enabling async discard
[  120.164181][ T5686] BTRFS info (device loop0): rebuilding free space tree
[  120.176373][ T5686] BTRFS info (device loop0): disabling free space tree
[  120.183262][ T5686] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  5686] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5686] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5686] chdir("./file0")            = 0
[pid  5686] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5686] close(4)                    = 0
[pid  5686] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5685] <... futex resumed>)        = 0
[pid  5686] <... futex resumed>)        = 1
[pid  5685] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5686] open("./file0", O_RDONLY <unfinished ...>
[pid  5685] <... futex resumed>)        = 0
[pid  5686] <... open resumed>)         = 4
[pid  5685] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5686] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5685] <... futex resumed>)        = 0
[pid  5686] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  5685] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5686] <... ioctl resumed>)        = 0
[pid  5685] <... futex resumed>)        = 0
[pid  5685] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5686] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5685] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5686] <... futex resumed>)        = 0
[pid  5686] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5685] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5685] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5686] <... futex resumed>)        = 0
[  120.193341][ T5686] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  120.207301][ T5686] BTRFS info (device loop0): checking UUID tree
[  120.263245][ T5686] BTRFS info (device loop0): balance: start -d -m
[  120.274699][ T5686] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  5686] 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}} <unfinished ...>
[pid  5685] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  5685] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5685] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5685] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5685] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5685] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[95]}, 88) = 95
[pid  5685] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5685] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5685] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5704 attached
 <unfinished ...>
[pid  5704] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  5704] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  5704] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5704] open("./file0", O_RDONLY)   = 5
[pid  5704] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5685] <... futex resumed>)        = 0
[pid  5704] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5685] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5704] <... futex resumed>)        = 0
[pid  5685] <... futex resumed>)        = 1
[pid  5704] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  120.304255][ T5686] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5685] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5704] <... ioctl resumed>)        = 0
[pid  5704] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  120.461503][ T5686] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  120.485504][ T5686] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  5704] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5686] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5686] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5685] close(3 <unfinished ...>
[pid  5686] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5685] <... close resumed>)        = 0
[pid  5685] close(4)                    = 0
[pid  5685] close(5)                    = 0
[pid  5685] close(6)                    = -1 EBADF (Bad file descriptor)
[  120.506586][ T5686] BTRFS info (device loop0): balance: ended with status: 0
[pid  5685] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5685] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5685] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5685] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5685] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5685] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5685] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5685] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5685] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5685] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5685] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5685] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5685] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5685] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5685] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5685] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5685] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5685] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5685] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5685] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5685] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5685] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5685] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5685] exit_group(0 <unfinished ...>
[pid  5704] <... futex resumed>)        = ?
[pid  5704] +++ exited with 0 +++
[pid  5686] <... futex resumed>)        = ?
[pid  5685] <... exit_group resumed>)   = ?
[pid  5686] +++ exited with 0 +++
[pid  5685] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=93, si_uid=0, si_status=0, si_utime=0, si_stime=45 /* 0.45 s */} ---
[pid  5073] umount2("./30", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./30", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./30/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./30/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./30/binderfs")     = 0
[pid  5073] umount2("./30/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./30/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./30/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./30/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./30/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./30/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./30")               = 0
[pid  5073] mkdir("./31", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5705 attached
, child_tidptr=0x5555570a9690) = 96
[pid  5705] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5705] chdir("./31")               = 0
[pid  5705] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5705] setpgid(0, 0)               = 0
[pid  5705] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5705] write(3, "1000", 4)         = 4
[pid  5705] close(3)                    = 0
[pid  5705] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5705] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5705] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5705] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5705] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5705] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5706 attached
 => {parent_tid=[97]}, 88) = 97
[pid  5705] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5705] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5706] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  5705] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5706] set_robust_list(0x7f8785c4c9a0, 24) = 0
[pid  5706] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5706] memfd_create("syzkaller", 0) = 3
[pid  5706] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5706] 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) = 16777216
[pid  5706] munmap(0x7f877d82c000, 138412032) = 0
[pid  5706] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5706] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5706] close(3)                    = 0
[pid  5706] mkdir("./file0", 0777)      = 0
[  121.219646][ T5706] loop0: detected capacity change from 0 to 32768
[  121.246306][ T5706] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5706)
[  121.262370][ T5706] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  121.272100][ T5706] BTRFS info (device loop0): force clearing of disk cache
[  121.279252][ T5706] BTRFS info (device loop0): setting nodatasum
[  121.285734][ T5706] BTRFS info (device loop0): allowing degraded mounts
[  121.292504][ T5706] BTRFS info (device loop0): enabling disk space caching
[  121.299596][ T5706] BTRFS info (device loop0): disk space caching is enabled
[  121.320918][ T5706] BTRFS info (device loop0): enabling ssd optimizations
[  121.327934][ T5706] BTRFS info (device loop0): auto enabling async discard
[  121.335998][ T5706] BTRFS info (device loop0): rebuilding free space tree
[  121.347971][ T5706] BTRFS info (device loop0): disabling free space tree
[  121.354923][ T5706] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  5706] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5706] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5706] chdir("./file0")            = 0
[pid  5706] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5706] close(4)                    = 0
[pid  5706] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5706] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5705] <... futex resumed>)        = 0
[pid  5705] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5706] <... futex resumed>)        = 0
[pid  5705] <... futex resumed>)        = 1
[pid  5706] open("./file0", O_RDONLY <unfinished ...>
[pid  5705] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5706] <... open resumed>)         = 4
[pid  5706] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5706] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5705] <... futex resumed>)        = 0
[pid  5705] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5706] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5705] <... futex resumed>)        = 0
[pid  5706] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  5705] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5706] <... ioctl resumed>)        = 0
[pid  5706] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[  121.364621][ T5706] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  121.377845][ T5706] BTRFS info (device loop0): checking UUID tree
[pid  5705] <... futex resumed>)        = 0
[pid  5706] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5705] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5705] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5706] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5706] 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}} <unfinished ...>
[pid  5705] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  5705] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5705] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5705] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5705] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5705] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[98]}, 88) = 98
[pid  5705] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5705] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5705] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5724 attached
 <unfinished ...>
[pid  5724] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  5724] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  5724] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5724] open("./file0", O_RDONLY)   = 5
[pid  5724] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5705] <... futex resumed>)        = 0
[pid  5724] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5705] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5724] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5705] <... futex resumed>)        = 0
[pid  5724] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  121.455437][ T5706] BTRFS info (device loop0): balance: start -d -m
[  121.466118][ T5706] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  121.490011][ T5706] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5705] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5724] <... ioctl resumed>)        = 0
[pid  5724] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  121.648613][ T5706] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  121.673640][ T5706] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  5724] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5706] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5706] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5705] close(3 <unfinished ...>
[pid  5706] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5705] <... close resumed>)        = 0
[pid  5705] close(4)                    = 0
[pid  5705] close(5)                    = 0
[pid  5705] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5705] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5705] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5705] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5705] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5705] close(11)                   = -1 EBADF (Bad file descriptor)
[  121.692725][ T5706] BTRFS info (device loop0): balance: ended with status: 0
[pid  5705] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5705] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5705] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5705] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5705] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5705] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5705] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5705] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5705] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5705] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5705] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5705] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5705] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5705] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5705] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5705] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5705] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5705] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5705] exit_group(0 <unfinished ...>
[pid  5706] <... futex resumed>)        = ?
[pid  5705] <... exit_group resumed>)   = ?
[pid  5706] +++ exited with 0 +++
[pid  5724] <... futex resumed>)        = ?
[pid  5724] +++ exited with 0 +++
[pid  5705] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=96, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=44 /* 0.44 s */} ---
[pid  5073] umount2("./31", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./31", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./31/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./31/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./31/binderfs")     = 0
[pid  5073] umount2("./31/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./31/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./31/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./31/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./31/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./31/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./31")               = 0
[pid  5073] mkdir("./32", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5725 attached
, child_tidptr=0x5555570a9690) = 99
[pid  5725] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5725] chdir("./32")               = 0
[pid  5725] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5725] setpgid(0, 0)               = 0
[pid  5725] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5725] write(3, "1000", 4)         = 4
[pid  5725] close(3)                    = 0
[pid  5725] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5725] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5725] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5725] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5725] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5725] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5726 attached
 <unfinished ...>
[pid  5726] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  5725] <... clone3 resumed> => {parent_tid=[100]}, 88) = 100
[pid  5726] <... rseq resumed>)         = 0
[pid  5725] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5726] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5725] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5726] <... set_robust_list resumed>) = 0
[pid  5725] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5726] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5725] <... futex resumed>)        = 0
[pid  5726] memfd_create("syzkaller", 0 <unfinished ...>
[pid  5725] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5726] <... memfd_create resumed>) = 3
[pid  5726] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5726] 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) = 16777216
[pid  5726] munmap(0x7f877d82c000, 138412032) = 0
[pid  5726] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5726] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5726] close(3)                    = 0
[pid  5726] mkdir("./file0", 0777)      = 0
[  122.315436][ T5726] loop0: detected capacity change from 0 to 32768
[  122.335324][ T5726] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5726)
[  122.351218][ T5726] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  122.360707][ T5726] BTRFS info (device loop0): force clearing of disk cache
[  122.367859][ T5726] BTRFS info (device loop0): setting nodatasum
[  122.374074][ T5726] BTRFS info (device loop0): allowing degraded mounts
[  122.380842][ T5726] BTRFS info (device loop0): enabling disk space caching
[  122.387892][ T5726] BTRFS info (device loop0): disk space caching is enabled
[  122.410208][ T5726] BTRFS info (device loop0): enabling ssd optimizations
[  122.417201][ T5726] BTRFS info (device loop0): auto enabling async discard
[  122.425306][ T5726] BTRFS info (device loop0): rebuilding free space tree
[  122.437409][ T5726] BTRFS info (device loop0): disabling free space tree
[  122.444403][ T5726] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  122.454063][ T5726] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  5726] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5726] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5726] chdir("./file0")            = 0
[pid  5726] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5726] close(4)                    = 0
[pid  5726] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5726] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5725] <... futex resumed>)        = 0
[pid  5725] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5726] <... futex resumed>)        = 0
[pid  5725] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5726] open("./file0", O_RDONLY)   = 4
[pid  5726] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5726] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5725] <... futex resumed>)        = 0
[pid  5725] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5726] <... futex resumed>)        = 0
[pid  5726] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[  122.467317][ T5726] BTRFS info (device loop0): checking UUID tree
[pid  5725] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5726] <... ioctl resumed>)        = 0
[pid  5726] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5725] <... futex resumed>)        = 0
[pid  5726] 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}} <unfinished ...>
[pid  5725] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5725] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5725] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5725] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5725] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5725] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5725] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 5744 attached
 <unfinished ...>
[pid  5744] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  5725] <... clone3 resumed> => {parent_tid=[101]}, 88) = 101
[pid  5744] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  5725] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5744] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5725] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5744] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5744] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5725] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5725] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5744] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5744] open("./file0", O_RDONLY)   = 5
[pid  5744] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5725] <... futex resumed>)        = 0
[pid  5744] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5725] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5744] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5744] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  5725] <... futex resumed>)        = 0
[  122.536162][ T5726] BTRFS info (device loop0): balance: start -d -m
[  122.548085][ T5726] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  122.574969][ T5726] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5725] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5744] <... ioctl resumed>)        = 0
[pid  5744] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  122.719079][ T5726] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  122.745534][ T5726] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  5744] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5726] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5726] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5726] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5725] close(3)                    = 0
[pid  5725] close(4)                    = 0
[pid  5725] close(5)                    = 0
[pid  5725] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5725] close(7)                    = -1 EBADF (Bad file descriptor)
[  122.764166][ T5726] BTRFS info (device loop0): balance: ended with status: 0
[pid  5725] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5725] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5725] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5725] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5725] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5725] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5725] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5725] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5725] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5725] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5725] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5725] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5725] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5725] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5725] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5725] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5725] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5725] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5725] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5725] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5725] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5725] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5725] exit_group(0 <unfinished ...>
[pid  5744] <... futex resumed>)        = ?
[pid  5726] <... futex resumed>)        = ?
[pid  5725] <... exit_group resumed>)   = ?
[pid  5744] +++ exited with 0 +++
[pid  5726] +++ exited with 0 +++
[pid  5725] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=99, si_uid=0, si_status=0, si_utime=0, si_stime=38 /* 0.38 s */} ---
[pid  5073] umount2("./32", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./32", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./32/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./32/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./32/binderfs")     = 0
[pid  5073] umount2("./32/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./32/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./32/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./32/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./32/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./32/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./32")               = 0
[pid  5073] mkdir("./33", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5745 attached
, child_tidptr=0x5555570a9690) = 102
[pid  5745] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5745] chdir("./33")               = 0
[pid  5745] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5745] setpgid(0, 0)               = 0
[pid  5745] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5745] write(3, "1000", 4)         = 4
[pid  5745] close(3)                    = 0
[pid  5745] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5745] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5745] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5745] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5745] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5745] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5746 attached
 <unfinished ...>
[pid  5746] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  5746] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5745] <... clone3 resumed> => {parent_tid=[103]}, 88) = 103
[pid  5746] <... set_robust_list resumed>) = 0
[pid  5746] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5745] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5746] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5745] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5746] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5745] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5746] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5745] <... futex resumed>)        = 0
[pid  5746] memfd_create("syzkaller", 0 <unfinished ...>
[pid  5745] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5746] <... memfd_create resumed>) = 3
[pid  5746] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5746] 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) = 16777216
[pid  5746] munmap(0x7f877d82c000, 138412032) = 0
[pid  5746] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5746] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5746] close(3)                    = 0
[pid  5746] mkdir("./file0", 0777)      = 0
[  123.373290][ T5746] loop0: detected capacity change from 0 to 32768
[  123.392878][ T5746] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5746)
[  123.408020][ T5746] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  123.417304][ T5746] BTRFS info (device loop0): force clearing of disk cache
[  123.424491][ T5746] BTRFS info (device loop0): setting nodatasum
[  123.430661][ T5746] BTRFS info (device loop0): allowing degraded mounts
[  123.437487][ T5746] BTRFS info (device loop0): enabling disk space caching
[  123.444609][ T5746] BTRFS info (device loop0): disk space caching is enabled
[  123.466556][ T5746] BTRFS info (device loop0): enabling ssd optimizations
[  123.473512][ T5746] BTRFS info (device loop0): auto enabling async discard
[  123.481550][ T5746] BTRFS info (device loop0): rebuilding free space tree
[  123.493413][ T5746] BTRFS info (device loop0): disabling free space tree
[  123.500428][ T5746] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  123.510108][ T5746] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  5746] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5746] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5746] chdir("./file0")            = 0
[pid  5746] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5746] close(4)                    = 0
[pid  5746] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5745] <... futex resumed>)        = 0
[pid  5745] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5746] <... futex resumed>)        = 1
[pid  5745] <... futex resumed>)        = 0
[pid  5746] open("./file0", O_RDONLY <unfinished ...>
[pid  5745] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5746] <... open resumed>)         = 4
[pid  5746] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5745] <... futex resumed>)        = 0
[pid  5745] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5746] <... futex resumed>)        = 1
[pid  5745] <... futex resumed>)        = 0
[pid  5745] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5746] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[  123.523294][ T5746] BTRFS info (device loop0): checking UUID tree
[pid  5746] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5745] <... futex resumed>)        = 0
[pid  5745] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5746] 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}} <unfinished ...>
[pid  5745] <... futex resumed>)        = 0
[pid  5745] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5745] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5745] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5745] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5745] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5745] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[104]}, 88) = 104
[pid  5745] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5745] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5745] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5764 attached
 <unfinished ...>
[pid  5764] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  5764] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  5764] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5764] open("./file0", O_RDONLY)   = 5
[pid  5764] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5745] <... futex resumed>)        = 0
[pid  5745] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5745] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5764] <... futex resumed>)        = 1
[  123.598158][ T5746] BTRFS info (device loop0): balance: start -d -m
[  123.607601][ T5746] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  123.635397][ T5746] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5764] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  5745] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[  123.723760][ T5746] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  5764] <... ioctl resumed>)        = 0
[pid  5764] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5764] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5746] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5746] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5745] close(3 <unfinished ...>
[pid  5746] <... futex resumed>)        = 0
[pid  5745] <... close resumed>)        = 0
[pid  5746] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5745] close(4)                    = 0
[pid  5745] close(5)                    = 0
[pid  5745] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5745] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5745] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5745] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5745] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5745] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5745] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5745] close(13)                   = -1 EBADF (Bad file descriptor)
[  123.806166][ T5746] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  123.825068][ T5746] BTRFS info (device loop0): balance: ended with status: 0
[pid  5745] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5745] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5745] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5745] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5745] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5745] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5745] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5745] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5745] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5745] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5745] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5745] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5745] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5745] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5745] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5745] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5745] exit_group(0 <unfinished ...>
[pid  5746] <... futex resumed>)        = ?
[pid  5745] <... exit_group resumed>)   = ?
[pid  5764] <... futex resumed>)        = ?
[pid  5746] +++ exited with 0 +++
[pid  5764] +++ exited with 0 +++
[pid  5745] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=102, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=39 /* 0.39 s */} ---
[pid  5073] umount2("./33", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./33", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./33/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./33/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./33/binderfs")     = 0
[pid  5073] umount2("./33/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./33/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./33/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./33/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./33/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./33/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./33")               = 0
[pid  5073] mkdir("./34", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5765 attached
 <unfinished ...>
[pid  5765] set_robust_list(0x5555570a96a0, 24 <unfinished ...>
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 105
[pid  5765] <... set_robust_list resumed>) = 0
[pid  5765] chdir("./34")               = 0
[pid  5765] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5765] setpgid(0, 0)               = 0
[pid  5765] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5765] write(3, "1000", 4)         = 4
[pid  5765] close(3)                    = 0
[pid  5765] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5765] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5765] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5765] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5765] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5765] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5766 attached
 <unfinished ...>
[pid  5766] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  5766] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5765] <... clone3 resumed> => {parent_tid=[106]}, 88) = 106
[pid  5766] <... set_robust_list resumed>) = 0
[pid  5766] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5765] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5766] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5765] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5766] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5765] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5766] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5765] <... futex resumed>)        = 0
[pid  5766] memfd_create("syzkaller", 0 <unfinished ...>
[pid  5765] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5766] <... memfd_create resumed>) = 3
[pid  5766] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5766] 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) = 16777216
[pid  5766] munmap(0x7f877d82c000, 138412032) = 0
[pid  5766] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5766] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5766] close(3)                    = 0
[pid  5766] mkdir("./file0", 0777)      = 0
[  124.578067][ T5766] loop0: detected capacity change from 0 to 32768
[  124.598511][ T5766] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5766)
[  124.614097][ T5766] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  124.623347][ T5766] BTRFS info (device loop0): force clearing of disk cache
[  124.630502][ T5766] BTRFS info (device loop0): setting nodatasum
[  124.636703][ T5766] BTRFS info (device loop0): allowing degraded mounts
[  124.643465][ T5766] BTRFS info (device loop0): enabling disk space caching
[  124.650553][ T5766] BTRFS info (device loop0): disk space caching is enabled
[  124.672027][ T5766] BTRFS info (device loop0): enabling ssd optimizations
[  124.679009][ T5766] BTRFS info (device loop0): auto enabling async discard
[  124.687174][ T5766] BTRFS info (device loop0): rebuilding free space tree
[  124.699706][ T5766] BTRFS info (device loop0): disabling free space tree
[  124.706870][ T5766] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  124.716660][ T5766] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  5766] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5766] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5766] chdir("./file0")            = 0
[pid  5766] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5766] close(4)                    = 0
[  124.730309][ T5766] BTRFS info (device loop0): checking UUID tree
[pid  5766] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5765] <... futex resumed>)        = 0
[pid  5765] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5766] open("./file0", O_RDONLY)   = 4
[pid  5765] <... futex resumed>)        = 0
[pid  5766] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5765] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5766] <... futex resumed>)        = 0
[pid  5766] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5765] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5765] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5766] <... futex resumed>)        = 0
[pid  5765] <... futex resumed>)        = 1
[pid  5766] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  5765] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5766] <... ioctl resumed>)        = 0
[pid  5766] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5765] <... futex resumed>)        = 0
[pid  5765] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5766] 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}} <unfinished ...>
[  124.841462][ T5766] BTRFS info (device loop0): balance: start -d -m
[  124.852862][ T5766] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  5765] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5765] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5765] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5765] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5765] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5765] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[107]}, 88) = 107
[pid  5765] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5765] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 5784 attached
 <unfinished ...>
[pid  5784] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  5784] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  5784] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5765] <... futex resumed>)        = 0
[pid  5784] open("./file0", O_RDONLY)   = 5
[pid  5765] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5784] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5765] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5784] <... futex resumed>)        = 0
[pid  5765] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5784] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  5765] <... futex resumed>)        = 0
[  124.885895][ T5766] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5765] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5784] <... ioctl resumed>)        = 0
[pid  5784] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  125.022031][ T5766] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  125.045852][ T5766] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  5784] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5766] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5766] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5765] close(3 <unfinished ...>
[pid  5766] <... futex resumed>)        = 0
[pid  5765] <... close resumed>)        = 0
[pid  5766] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5765] close(4)                    = 0
[pid  5765] close(5)                    = 0
[pid  5765] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5765] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5765] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5765] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5765] close(10)                   = -1 EBADF (Bad file descriptor)
[  125.065306][ T5766] BTRFS info (device loop0): balance: ended with status: 0
[pid  5765] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5765] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5765] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5765] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5765] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5765] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5765] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5765] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5765] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5765] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5765] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5765] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5765] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5765] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5765] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5765] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5765] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5765] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5765] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5765] exit_group(0 <unfinished ...>
[pid  5766] <... futex resumed>)        = ?
[pid  5784] <... futex resumed>)        = ?
[pid  5766] +++ exited with 0 +++
[pid  5765] <... exit_group resumed>)   = ?
[pid  5784] +++ exited with 0 +++
[pid  5765] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=105, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=39 /* 0.39 s */} ---
[pid  5073] umount2("./34", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./34", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./34/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./34/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./34/binderfs")     = 0
[pid  5073] umount2("./34/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./34/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./34/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./34/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./34/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./34/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./34")               = 0
[pid  5073] mkdir("./35", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5785 attached
, child_tidptr=0x5555570a9690) = 108
[pid  5785] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5785] chdir("./35")               = 0
[pid  5785] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5785] setpgid(0, 0)               = 0
[pid  5785] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5785] write(3, "1000", 4)         = 4
[pid  5785] close(3)                    = 0
[pid  5785] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5785] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5785] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5785] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5785] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5785] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5786 attached
 <unfinished ...>
[pid  5786] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  5785] <... clone3 resumed> => {parent_tid=[109]}, 88) = 109
[pid  5786] <... rseq resumed>)         = 0
[pid  5785] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5786] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5785] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5786] <... set_robust_list resumed>) = 0
[pid  5785] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5786] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5785] <... futex resumed>)        = 0
[pid  5785] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5786] memfd_create("syzkaller", 0) = 3
[pid  5786] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5786] 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) = 16777216
[pid  5786] munmap(0x7f877d82c000, 138412032) = 0
[pid  5786] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5786] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5786] close(3)                    = 0
[pid  5786] mkdir("./file0", 0777)      = 0
[  125.715990][ T5786] loop0: detected capacity change from 0 to 32768
[  125.735505][ T5786] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5786)
[  125.751587][ T5786] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  125.761099][ T5786] BTRFS info (device loop0): force clearing of disk cache
[  125.768568][ T5786] BTRFS info (device loop0): setting nodatasum
[  125.774950][ T5786] BTRFS info (device loop0): allowing degraded mounts
[  125.781717][ T5786] BTRFS info (device loop0): enabling disk space caching
[  125.788951][ T5786] BTRFS info (device loop0): disk space caching is enabled
[  125.811004][ T5786] BTRFS info (device loop0): enabling ssd optimizations
[  125.817998][ T5786] BTRFS info (device loop0): auto enabling async discard
[  125.826211][ T5786] BTRFS info (device loop0): rebuilding free space tree
[  125.838382][ T5786] BTRFS info (device loop0): disabling free space tree
[  125.845357][ T5786] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  125.855025][ T5786] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  5786] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5786] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5786] chdir("./file0")            = 0
[pid  5786] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5786] close(4)                    = 0
[pid  5786] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5786] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5785] <... futex resumed>)        = 0
[pid  5785] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5786] <... futex resumed>)        = 0
[pid  5785] <... futex resumed>)        = 1
[pid  5785] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5786] open("./file0", O_RDONLY)   = 4
[pid  5786] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5785] <... futex resumed>)        = 0
[pid  5785] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5786] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  5785] <... futex resumed>)        = 0
[pid  5786] <... ioctl resumed>)        = 0
[  125.867910][ T5786] BTRFS info (device loop0): checking UUID tree
[pid  5785] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5786] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5785] <... futex resumed>)        = 0
[pid  5785] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5786] 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}} <unfinished ...>
[pid  5785] <... futex resumed>)        = 0
[  125.955830][ T5786] BTRFS info (device loop0): balance: start -d -m
[  125.964500][ T5786] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  5785] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5785] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5785] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5785] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5785] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5785] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[110]}, 88) = 110
[pid  5785] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5785] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5785] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5804 attached
 <unfinished ...>
[pid  5804] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  5804] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  5804] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5804] open("./file0", O_RDONLY)   = 5
[pid  5804] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5785] <... futex resumed>)        = 0
[pid  5804] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5785] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5804] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5785] <... futex resumed>)        = 0
[pid  5785] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[  126.002806][ T5786] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5804] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  5785] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  5804] <... ioctl resumed>)        = 0
[pid  5804] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5804] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5786] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5786] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5786] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5785] close(3)                    = 0
[pid  5785] close(4)                    = 0
[pid  5785] close(5)                    = 0
[pid  5785] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5785] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5785] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5785] close(9)                    = -1 EBADF (Bad file descriptor)
[  126.146329][ T5786] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  126.169469][ T5786] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  126.188582][ T5786] BTRFS info (device loop0): balance: ended with status: 0
[pid  5785] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5785] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5785] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5785] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5785] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5785] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5785] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5785] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5785] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5785] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5785] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5785] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5785] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5785] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5785] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5785] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5785] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5785] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5785] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5785] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5785] exit_group(0 <unfinished ...>
[pid  5786] <... futex resumed>)        = ?
[pid  5785] <... exit_group resumed>)   = ?
[pid  5804] <... futex resumed>)        = ?
[pid  5786] +++ exited with 0 +++
[pid  5804] +++ exited with 0 +++
[pid  5785] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=108, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=43 /* 0.43 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./35", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./35", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./35/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./35/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./35/binderfs")     = 0
[pid  5073] umount2("./35/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./35/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./35/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./35/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./35/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./35/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./35")               = 0
[pid  5073] mkdir("./36", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555570a9690) = 111
./strace-static-x86_64: Process 5805 attached
[pid  5805] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5805] chdir("./36")               = 0
[pid  5805] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5805] setpgid(0, 0)               = 0
[pid  5805] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5805] write(3, "1000", 4)         = 4
[pid  5805] close(3)                    = 0
[pid  5805] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5805] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5805] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5805] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5805] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5805] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5806 attached
 <unfinished ...>
[pid  5806] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  5805] <... clone3 resumed> => {parent_tid=[112]}, 88) = 112
[pid  5806] <... rseq resumed>)         = 0
[pid  5805] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5806] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5805] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5806] <... set_robust_list resumed>) = 0
[pid  5805] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5806] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5805] <... futex resumed>)        = 0
[pid  5806] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5805] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5806] memfd_create("syzkaller", 0) = 3
[pid  5806] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5806] 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) = 16777216
[pid  5806] munmap(0x7f877d82c000, 138412032) = 0
[pid  5806] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5806] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5806] close(3)                    = 0
[pid  5806] mkdir("./file0", 0777)      = 0
[  126.781411][ T5806] loop0: detected capacity change from 0 to 32768
[  126.808338][ T5806] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5806)
[  126.824110][ T5806] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  126.833367][ T5806] BTRFS info (device loop0): force clearing of disk cache
[  126.840624][ T5806] BTRFS info (device loop0): setting nodatasum
[  126.846975][ T5806] BTRFS info (device loop0): allowing degraded mounts
[  126.853746][ T5806] BTRFS info (device loop0): enabling disk space caching
[  126.861083][ T5806] BTRFS info (device loop0): disk space caching is enabled
[  126.884253][ T5806] BTRFS info (device loop0): enabling ssd optimizations
[  126.891208][ T5806] BTRFS info (device loop0): auto enabling async discard
[  126.899127][ T5806] BTRFS info (device loop0): rebuilding free space tree
[  126.911264][ T5806] BTRFS info (device loop0): disabling free space tree
[  126.918263][ T5806] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  5806] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5806] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5806] chdir("./file0")            = 0
[pid  5806] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5806] close(4)                    = 0
[  126.927956][ T5806] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  126.941046][ T5806] BTRFS info (device loop0): checking UUID tree
[pid  5806] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5805] <... futex resumed>)        = 0
[pid  5806] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5805] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5806] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5805] <... futex resumed>)        = 0
[pid  5806] open("./file0", O_RDONLY <unfinished ...>
[pid  5805] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5806] <... open resumed>)         = 4
[pid  5806] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5806] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5805] <... futex resumed>)        = 0
[pid  5805] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5806] <... futex resumed>)        = 0
[pid  5805] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5806] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  5806] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5805] <... futex resumed>)        = 0
[pid  5806] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5805] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5806] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5805] <... futex resumed>)        = 0
[pid  5806] 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}} <unfinished ...>
[pid  5805] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5805] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5805] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5805] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5805] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5805] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 5824 attached
 => {parent_tid=[113]}, 88) = 113
[pid  5824] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  5805] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5824] <... rseq resumed>)         = 0
[pid  5805] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5824] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  5805] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5824] <... set_robust_list resumed>) = 0
[pid  5824] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5824] open("./file0", O_RDONLY <unfinished ...>
[pid  5805] <... futex resumed>)        = 0
[pid  5824] <... open resumed>)         = 5
[pid  5805] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5824] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5805] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5824] <... futex resumed>)        = 0
[pid  5805] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5824] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  5805] <... futex resumed>)        = 0
[  127.030872][ T5806] BTRFS info (device loop0): balance: start -d -m
[  127.039297][ T5806] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  127.063658][ T5806] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5805] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5824] <... ioctl resumed>)        = 0
[pid  5824] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  127.224769][ T5806] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  127.251020][ T5806] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  5824] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5806] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5806] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5805] close(3 <unfinished ...>
[pid  5806] <... futex resumed>)        = 0
[pid  5805] <... close resumed>)        = 0
[pid  5806] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5805] close(4)                    = 0
[pid  5805] close(5)                    = 0
[pid  5805] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5805] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5805] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5805] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5805] close(10)                   = -1 EBADF (Bad file descriptor)
[  127.271861][ T5806] BTRFS info (device loop0): balance: ended with status: 0
[pid  5805] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5805] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5805] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5805] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5805] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5805] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5805] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5805] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5805] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5805] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5805] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5805] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5805] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5805] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5805] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5805] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5805] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5805] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5805] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5805] exit_group(0 <unfinished ...>
[pid  5824] <... futex resumed>)        = ?
[pid  5824] +++ exited with 0 +++
[pid  5806] <... futex resumed>)        = ?
[pid  5805] <... exit_group resumed>)   = ?
[pid  5806] +++ exited with 0 +++
[pid  5805] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=111, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=38 /* 0.38 s */} ---
[pid  5073] umount2("./36", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./36", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./36/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./36/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./36/binderfs")     = 0
[pid  5073] umount2("./36/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./36/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./36/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./36/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./36/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./36/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./36")               = 0
[pid  5073] mkdir("./37", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5825 attached
, child_tidptr=0x5555570a9690) = 114
[pid  5825] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5825] chdir("./37")               = 0
[pid  5825] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5825] setpgid(0, 0)               = 0
[pid  5825] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5825] write(3, "1000", 4)         = 4
[pid  5825] close(3)                    = 0
[pid  5825] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5825] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5825] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5825] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5825] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5825] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5826 attached
 <unfinished ...>
[pid  5826] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  5826] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5825] <... clone3 resumed> => {parent_tid=[115]}, 88) = 115
[pid  5826] <... set_robust_list resumed>) = 0
[pid  5825] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5826] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5825] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5826] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5825] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5826] memfd_create("syzkaller", 0 <unfinished ...>
[pid  5825] <... futex resumed>)        = 0
[pid  5825] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5826] <... memfd_create resumed>) = 3
[pid  5826] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5826] 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) = 16777216
[pid  5826] munmap(0x7f877d82c000, 138412032) = 0
[pid  5826] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5826] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5826] close(3)                    = 0
[pid  5826] mkdir("./file0", 0777)      = 0
[  127.861004][ T5826] loop0: detected capacity change from 0 to 32768
[  127.886266][ T5826] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5826)
[  127.901564][ T5826] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  127.910863][ T5826] BTRFS info (device loop0): force clearing of disk cache
[  127.918040][ T5826] BTRFS info (device loop0): setting nodatasum
[  127.924245][ T5826] BTRFS info (device loop0): allowing degraded mounts
[  127.931013][ T5826] BTRFS info (device loop0): enabling disk space caching
[  127.938092][ T5826] BTRFS info (device loop0): disk space caching is enabled
[  127.960488][ T5826] BTRFS info (device loop0): enabling ssd optimizations
[  127.967538][ T5826] BTRFS info (device loop0): auto enabling async discard
[  127.976264][ T5826] BTRFS info (device loop0): rebuilding free space tree
[  127.989656][ T5826] BTRFS info (device loop0): disabling free space tree
[  127.996621][ T5826] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  5826] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5826] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5826] chdir("./file0")            = 0
[pid  5826] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5826] close(4)                    = 0
[pid  5826] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5826] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5825] <... futex resumed>)        = 0
[pid  5825] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5826] <... futex resumed>)        = 0
[pid  5825] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5826] open("./file0", O_RDONLY)   = 4
[  128.006531][ T5826] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  128.020006][ T5826] BTRFS info (device loop0): checking UUID tree
[pid  5826] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5825] <... futex resumed>)        = 0
[pid  5826] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5825] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5826] <... futex resumed>)        = 0
[pid  5825] <... futex resumed>)        = 1
[pid  5825] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5826] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  5826] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5825] <... futex resumed>)        = 0
[pid  5826] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5825] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5826] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5825] <... futex resumed>)        = 0
[pid  5826] 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}} <unfinished ...>
[pid  5825] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5825] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5825] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5825] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5825] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[  128.109536][ T5826] BTRFS info (device loop0): balance: start -d -m
[  128.119909][ T5826] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  128.145076][ T5826] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5825] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 5844 attached
 <unfinished ...>
[pid  5844] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  5844] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  5844] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5844] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5825] <... clone3 resumed> => {parent_tid=[116]}, 88) = 116
[pid  5825] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5825] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5844] <... futex resumed>)        = 0
[pid  5825] <... futex resumed>)        = 1
[pid  5844] open("./file0", O_RDONLY <unfinished ...>
[pid  5825] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5844] <... open resumed>)         = 5
[pid  5844] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5825] <... futex resumed>)        = 0
[pid  5844] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  5825] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5825] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5825] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[  128.198740][ T5826] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  5844] <... ioctl resumed>)        = 0
[pid  5844] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5844] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5826] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5826] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5825] close(3)                    = 0
[pid  5825] close(4)                    = 0
[pid  5825] close(5)                    = 0
[pid  5825] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5825] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5825] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5825] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5825] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5825] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5825] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5825] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5825] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5825] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5825] close(16 <unfinished ...>
[pid  5826] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5825] <... close resumed>)        = -1 EBADF (Bad file descriptor)
[pid  5825] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5825] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5825] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5825] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5825] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5825] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5825] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5825] close(24)                   = -1 EBADF (Bad file descriptor)
[  128.315241][ T5826] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  128.339031][ T5826] BTRFS info (device loop0): balance: ended with status: 0
[pid  5825] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5825] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5825] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5825] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5825] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5825] exit_group(0 <unfinished ...>
[pid  5844] <... futex resumed>)        = ?
[pid  5844] +++ exited with 0 +++
[pid  5825] <... exit_group resumed>)   = ?
[pid  5826] <... futex resumed>)        = ?
[pid  5826] +++ exited with 0 +++
[pid  5825] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=114, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=40 /* 0.40 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./37", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./37", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./37/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./37/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./37/binderfs")     = 0
[pid  5073] umount2("./37/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./37/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./37/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./37/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./37/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./37/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./37")               = 0
[pid  5073] mkdir("./38", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5845 attached
, child_tidptr=0x5555570a9690) = 117
[pid  5845] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5845] chdir("./38")               = 0
[pid  5845] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5845] setpgid(0, 0)               = 0
[pid  5845] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5845] write(3, "1000", 4)         = 4
[pid  5845] close(3)                    = 0
[pid  5845] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5845] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5845] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5845] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5845] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5845] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5846 attached
 <unfinished ...>
[pid  5846] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  5845] <... clone3 resumed> => {parent_tid=[118]}, 88) = 118
[pid  5846] <... rseq resumed>)         = 0
[pid  5845] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5846] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5845] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5846] <... set_robust_list resumed>) = 0
[pid  5845] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5846] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5845] <... futex resumed>)        = 0
[pid  5846] memfd_create("syzkaller", 0 <unfinished ...>
[pid  5845] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5846] <... memfd_create resumed>) = 3
[pid  5846] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5846] 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) = 16777216
[pid  5846] munmap(0x7f877d82c000, 138412032) = 0
[pid  5846] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5846] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5846] close(3)                    = 0
[pid  5846] mkdir("./file0", 0777)      = 0
[  128.924468][ T5846] loop0: detected capacity change from 0 to 32768
[  128.939502][ T5846] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5846)
[  128.956880][ T5846] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  128.966186][ T5846] BTRFS info (device loop0): force clearing of disk cache
[  128.973287][ T5846] BTRFS info (device loop0): setting nodatasum
[  128.979697][ T5846] BTRFS info (device loop0): allowing degraded mounts
[  128.986514][ T5846] BTRFS info (device loop0): enabling disk space caching
[  128.993528][ T5846] BTRFS info (device loop0): disk space caching is enabled
[  129.015263][ T5846] BTRFS info (device loop0): enabling ssd optimizations
[  129.022215][ T5846] BTRFS info (device loop0): auto enabling async discard
[  129.030840][ T5846] BTRFS info (device loop0): rebuilding free space tree
[  129.042374][ T5846] BTRFS info (device loop0): disabling free space tree
[  129.049351][ T5846] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  129.059110][ T5846] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  5846] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5846] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5846] chdir("./file0")            = 0
[pid  5846] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5846] close(4)                    = 0
[pid  5846] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5846] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5845] <... futex resumed>)        = 0
[  129.072259][ T5846] BTRFS info (device loop0): checking UUID tree
[pid  5845] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5846] <... futex resumed>)        = 0
[pid  5845] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5846] open("./file0", O_RDONLY)   = 4
[pid  5846] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5845] <... futex resumed>)        = 0
[pid  5846] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5845] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5846] <... futex resumed>)        = 0
[pid  5845] <... futex resumed>)        = 1
[pid  5846] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  5845] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5846] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5846] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5845] <... futex resumed>)        = 0
[pid  5845] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5846] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5845] <... futex resumed>)        = 0
[pid  5846] 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}} <unfinished ...>
[  129.176130][ T5846] BTRFS info (device loop0): balance: start -d -m
[  129.188161][ T5846] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  5845] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5845] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5845] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5845] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5845] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5845] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 5864 attached
 <unfinished ...>
[pid  5864] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  5845] <... clone3 resumed> => {parent_tid=[119]}, 88) = 119
[pid  5864] <... rseq resumed>)         = 0
[pid  5845] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5864] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  5845] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5864] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5845] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5864] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5845] <... futex resumed>)        = 0
[pid  5864] open("./file0", O_RDONLY <unfinished ...>
[pid  5845] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5864] <... open resumed>)         = 5
[pid  5864] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5845] <... futex resumed>)        = 0
[pid  5845] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5864] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  129.217727][ T5846] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5845] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5864] <... ioctl resumed>)        = 0
[pid  5864] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  129.334247][ T5846] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  129.358967][ T5846] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  5864] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5846] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5846] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5845] close(3 <unfinished ...>
[pid  5846] <... futex resumed>)        = 0
[pid  5846] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5845] <... close resumed>)        = 0
[pid  5845] close(4)                    = 0
[pid  5845] close(5)                    = 0
[pid  5845] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5845] close(7)                    = -1 EBADF (Bad file descriptor)
[  129.378494][ T5846] BTRFS info (device loop0): balance: ended with status: 0
[pid  5845] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5845] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5845] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5845] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5845] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5845] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5845] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5845] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5845] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5845] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5845] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5845] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5845] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5845] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5845] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5845] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5845] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5845] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5845] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5845] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5845] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5845] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5845] exit_group(0 <unfinished ...>
[pid  5846] <... futex resumed>)        = ?
[pid  5864] <... futex resumed>)        = ?
[pid  5845] <... exit_group resumed>)   = ?
[pid  5864] +++ exited with 0 +++
[pid  5846] +++ exited with 0 +++
[pid  5845] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=117, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=35 /* 0.35 s */} ---
[pid  5073] umount2("./38", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./38", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./38/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./38/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./38/binderfs")     = 0
[pid  5073] umount2("./38/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./38/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./38/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./38/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./38/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./38/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./38")               = 0
[pid  5073] mkdir("./39", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5865 attached
, child_tidptr=0x5555570a9690) = 120
[pid  5865] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5865] chdir("./39")               = 0
[pid  5865] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5865] setpgid(0, 0)               = 0
[pid  5865] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5865] write(3, "1000", 4)         = 4
[pid  5865] close(3)                    = 0
[pid  5865] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5865] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5865] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5865] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5865] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5865] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5866 attached
 <unfinished ...>
[pid  5866] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  5865] <... clone3 resumed> => {parent_tid=[121]}, 88) = 121
[pid  5866] <... rseq resumed>)         = 0
[pid  5865] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5866] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5865] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5866] <... set_robust_list resumed>) = 0
[pid  5865] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5866] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5865] <... futex resumed>)        = 0
[pid  5866] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5865] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5866] memfd_create("syzkaller", 0) = 3
[pid  5866] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5866] 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) = 16777216
[pid  5866] munmap(0x7f877d82c000, 138412032) = 0
[pid  5866] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5866] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5866] close(3)                    = 0
[pid  5866] mkdir("./file0", 0777)      = 0
[  129.909421][ T5866] loop0: detected capacity change from 0 to 32768
[  129.936896][ T5866] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5866)
[  129.952508][ T5866] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  129.961805][ T5866] BTRFS info (device loop0): force clearing of disk cache
[  129.968970][ T5866] BTRFS info (device loop0): setting nodatasum
[  129.975178][ T5866] BTRFS info (device loop0): allowing degraded mounts
[  129.981934][ T5866] BTRFS info (device loop0): enabling disk space caching
[  129.988987][ T5866] BTRFS info (device loop0): disk space caching is enabled
[  130.010908][ T5866] BTRFS info (device loop0): enabling ssd optimizations
[  130.017957][ T5866] BTRFS info (device loop0): auto enabling async discard
[  130.026007][ T5866] BTRFS info (device loop0): rebuilding free space tree
[  130.038700][ T5866] BTRFS info (device loop0): disabling free space tree
[  130.045691][ T5866] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  5866] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5866] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5866] chdir("./file0")            = 0
[pid  5866] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5866] close(4)                    = 0
[pid  5866] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5866] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5865] <... futex resumed>)        = 0
[pid  5865] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5866] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5865] <... futex resumed>)        = 0
[pid  5866] open("./file0", O_RDONLY <unfinished ...>
[pid  5865] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5866] <... open resumed>)         = 4
[pid  5866] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5865] <... futex resumed>)        = 0
[pid  5866] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5865] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5866] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5865] <... futex resumed>)        = 0
[pid  5866] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  5865] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5866] <... ioctl resumed>)        = 0
[pid  5866] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5865] <... futex resumed>)        = 0
[pid  5865] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5866] 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}} <unfinished ...>
[pid  5865] <... futex resumed>)        = 0
[  130.055379][ T5866] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  130.068392][ T5866] BTRFS info (device loop0): checking UUID tree
[pid  5865] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5865] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  5865] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5865] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5865] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5865] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[  130.118931][ T5866] BTRFS info (device loop0): balance: start -d -m
[  130.127930][ T5866] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  130.152902][ T5866] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5865] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 5884 attached
 <unfinished ...>
[pid  5884] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  5865] <... clone3 resumed> => {parent_tid=[122]}, 88) = 122
[pid  5884] <... rseq resumed>)         = 0
[pid  5865] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5884] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  5865] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5884] <... set_robust_list resumed>) = 0
[pid  5865] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5884] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5865] <... futex resumed>)        = 0
[pid  5884] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5865] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5884] open("./file0", O_RDONLY)   = 5
[pid  5884] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5865] <... futex resumed>)        = 0
[pid  5884] <... futex resumed>)        = 1
[pid  5865] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5884] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  5865] <... futex resumed>)        = 0
[pid  5865] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[  130.272898][ T5866] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  5884] <... ioctl resumed>)        = 0
[pid  5884] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5884] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5866] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5866] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5865] close(3 <unfinished ...>
[pid  5866] <... futex resumed>)        = 0
[pid  5866] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5865] <... close resumed>)        = 0
[pid  5865] close(4)                    = 0
[pid  5865] close(5)                    = 0
[pid  5865] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5865] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5865] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5865] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5865] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5865] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5865] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5865] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5865] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5865] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5865] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5865] close(17)                   = -1 EBADF (Bad file descriptor)
[  130.359288][ T5866] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  130.379595][ T5866] BTRFS info (device loop0): balance: ended with status: 0
[pid  5865] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5865] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5865] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5865] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5865] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5865] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5865] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5865] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5865] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5865] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5865] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5865] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5865] exit_group(0 <unfinished ...>
[pid  5884] <... futex resumed>)        = ?
[pid  5884] +++ exited with 0 +++
[pid  5866] <... futex resumed>)        = ?
[pid  5865] <... exit_group resumed>)   = ?
[pid  5866] +++ exited with 0 +++
[pid  5865] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=120, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=45 /* 0.45 s */} ---
[pid  5073] umount2("./39", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./39", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./39/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./39/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./39/binderfs")     = 0
[pid  5073] umount2("./39/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./39/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./39/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./39/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./39/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./39/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./39")               = 0
[pid  5073] mkdir("./40", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5885 attached
, child_tidptr=0x5555570a9690) = 123
[pid  5885] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5885] chdir("./40")               = 0
[pid  5885] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5885] setpgid(0, 0)               = 0
[pid  5885] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5885] write(3, "1000", 4)         = 4
[pid  5885] close(3)                    = 0
[pid  5885] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5885] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5885] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5885] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5885] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5885] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5886 attached
 <unfinished ...>
[pid  5886] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  5886] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5885] <... clone3 resumed> => {parent_tid=[124]}, 88) = 124
[pid  5886] <... set_robust_list resumed>) = 0
[pid  5885] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5886] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5885] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5886] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5886] memfd_create("syzkaller", 0 <unfinished ...>
[pid  5885] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5885] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5886] <... memfd_create resumed>) = 3
[pid  5886] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5886] 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) = 16777216
[pid  5886] munmap(0x7f877d82c000, 138412032) = 0
[pid  5886] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5886] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5886] close(3)                    = 0
[pid  5886] mkdir("./file0", 0777)      = 0
[  131.029454][ T5886] loop0: detected capacity change from 0 to 32768
[  131.044021][ T5886] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5886)
[  131.059765][ T5886] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  131.069046][ T5886] BTRFS info (device loop0): force clearing of disk cache
[  131.076334][ T5886] BTRFS info (device loop0): setting nodatasum
[  131.082642][ T5886] BTRFS info (device loop0): allowing degraded mounts
[  131.089465][ T5886] BTRFS info (device loop0): enabling disk space caching
[  131.096814][ T5886] BTRFS info (device loop0): disk space caching is enabled
[  131.118201][ T5886] BTRFS info (device loop0): enabling ssd optimizations
[  131.125209][ T5886] BTRFS info (device loop0): auto enabling async discard
[  131.133113][ T5886] BTRFS info (device loop0): rebuilding free space tree
[  131.145486][ T5886] BTRFS info (device loop0): disabling free space tree
[  131.152553][ T5886] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  131.162637][ T5886] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  5886] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5886] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5886] chdir("./file0")            = 0
[pid  5886] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5886] close(4)                    = 0
[pid  5886] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5886] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5885] <... futex resumed>)        = 0
[pid  5885] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5886] <... futex resumed>)        = 0
[pid  5885] <... futex resumed>)        = 1
[pid  5886] open("./file0", O_RDONLY <unfinished ...>
[  131.176250][ T5886] BTRFS info (device loop0): checking UUID tree
[pid  5885] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5886] <... open resumed>)         = 4
[pid  5886] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5885] <... futex resumed>)        = 0
[pid  5886] <... futex resumed>)        = 1
[pid  5885] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5886] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  5885] <... futex resumed>)        = 0
[pid  5886] <... ioctl resumed>)        = 0
[pid  5885] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5886] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5885] <... futex resumed>)        = 0
[pid  5885] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5885] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5886] 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}} <unfinished ...>
[pid  5885] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  5885] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5885] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5885] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5885] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5885] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[125]}, 88) = 125
[pid  5885] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5885] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5885] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5904 attached
 <unfinished ...>
[pid  5904] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  5904] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  5904] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5904] open("./file0", O_RDONLY)   = 5
[pid  5904] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5885] <... futex resumed>)        = 0
[pid  5904] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5885] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5904] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5885] <... futex resumed>)        = 0
[pid  5904] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  131.247540][ T5886] BTRFS info (device loop0): balance: start -d -m
[  131.257886][ T5886] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  131.286665][ T5886] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5885] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5904] <... ioctl resumed>)        = 0
[pid  5904] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  131.445334][ T5886] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  131.469866][ T5886] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  5904] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5886] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5886] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5885] close(3 <unfinished ...>
[pid  5886] <... futex resumed>)        = 0
[pid  5885] <... close resumed>)        = 0
[pid  5886] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5885] close(4)                    = 0
[pid  5885] close(5)                    = 0
[pid  5885] close(6)                    = -1 EBADF (Bad file descriptor)
[  131.489418][ T5886] BTRFS info (device loop0): balance: ended with status: 0
[pid  5885] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5885] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5885] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5885] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5885] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5885] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5885] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5885] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5885] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5885] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5885] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5885] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5885] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5885] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5885] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5885] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5885] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5885] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5885] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5885] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5885] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5885] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5885] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5885] exit_group(0 <unfinished ...>
[pid  5904] <... futex resumed>)        = ?
[pid  5885] <... exit_group resumed>)   = ?
[pid  5904] +++ exited with 0 +++
[pid  5886] <... futex resumed>)        = ?
[pid  5886] +++ exited with 0 +++
[pid  5885] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=123, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=44 /* 0.44 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./40", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./40", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./40/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./40/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./40/binderfs")     = 0
[pid  5073] umount2("./40/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./40/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./40/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./40/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./40/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./40/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./40")               = 0
[pid  5073] mkdir("./41", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5905 attached
, child_tidptr=0x5555570a9690) = 126
[pid  5905] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5905] chdir("./41")               = 0
[pid  5905] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5905] setpgid(0, 0)               = 0
[pid  5905] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5905] write(3, "1000", 4)         = 4
[pid  5905] close(3)                    = 0
[pid  5905] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5905] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5905] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5905] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5905] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5905] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5906 attached
 => {parent_tid=[127]}, 88) = 127
[pid  5905] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5905] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5905] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5906] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  5906] set_robust_list(0x7f8785c4c9a0, 24) = 0
[pid  5906] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5906] memfd_create("syzkaller", 0) = 3
[pid  5906] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5906] 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) = 16777216
[pid  5906] munmap(0x7f877d82c000, 138412032) = 0
[pid  5906] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5906] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5906] close(3)                    = 0
[pid  5906] mkdir("./file0", 0777)      = 0
[  132.020196][ T5906] loop0: detected capacity change from 0 to 32768
[  132.038214][ T5906] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5906)
[  132.053854][ T5906] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  132.063154][ T5906] BTRFS info (device loop0): force clearing of disk cache
[  132.070301][ T5906] BTRFS info (device loop0): setting nodatasum
[  132.076498][ T5906] BTRFS info (device loop0): allowing degraded mounts
[  132.083249][ T5906] BTRFS info (device loop0): enabling disk space caching
[  132.090290][ T5906] BTRFS info (device loop0): disk space caching is enabled
[  132.112584][ T5906] BTRFS info (device loop0): enabling ssd optimizations
[  132.119823][ T5906] BTRFS info (device loop0): auto enabling async discard
[  132.127986][ T5906] BTRFS info (device loop0): rebuilding free space tree
[  132.139564][ T5906] BTRFS info (device loop0): disabling free space tree
[  132.146518][ T5906] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  132.156206][ T5906] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  5906] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5906] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5906] chdir("./file0")            = 0
[pid  5906] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5906] close(4)                    = 0
[pid  5906] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[  132.169565][ T5906] BTRFS info (device loop0): checking UUID tree
[pid  5906] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5905] <... futex resumed>)        = 0
[pid  5905] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5906] <... futex resumed>)        = 0
[pid  5905] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5906] open("./file0", O_RDONLY)   = 4
[pid  5906] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5905] <... futex resumed>)        = 0
[pid  5906] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  5905] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5906] <... ioctl resumed>)        = 0
[pid  5905] <... futex resumed>)        = 0
[pid  5905] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5906] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5905] <... futex resumed>)        = 0
[pid  5906] 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}} <unfinished ...>
[pid  5905] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5905] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5905] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5905] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5905] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5905] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5905] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 5924 attached
[  132.221869][ T5906] BTRFS info (device loop0): balance: start -d -m
[  132.231074][ T5906] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  132.255675][ T5906] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
 => {parent_tid=[128]}, 88) = 128
[pid  5905] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5905] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5924] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  5924] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  5924] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5905] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5924] open("./file0", O_RDONLY)   = 5
[pid  5924] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5905] <... futex resumed>)        = 0
[pid  5924] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  5905] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  132.308792][ T5906] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  5905] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5924] <... ioctl resumed>)        = 0
[pid  5924] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5924] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5906] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5906] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5906] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5905] close(3)                    = 0
[pid  5905] close(4)                    = 0
[pid  5905] close(5)                    = 0
[pid  5905] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5905] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5905] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5905] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5905] close(10)                   = -1 EBADF (Bad file descriptor)
[  132.458537][ T5906] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  132.479585][ T5906] BTRFS info (device loop0): balance: ended with status: 0
[pid  5905] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5905] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5905] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5905] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5905] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5905] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5905] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5905] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5905] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5905] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5905] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5905] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5905] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5905] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5905] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5905] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5905] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5905] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5905] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5905] exit_group(0 <unfinished ...>
[pid  5924] <... futex resumed>)        = ?
[pid  5924] +++ exited with 0 +++
[pid  5906] <... futex resumed>)        = ?
[pid  5905] <... exit_group resumed>)   = ?
[pid  5906] +++ exited with 0 +++
[pid  5905] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=126, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=45 /* 0.45 s */} ---
[pid  5073] umount2("./41", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./41", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./41/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./41/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./41/binderfs")     = 0
[pid  5073] umount2("./41/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./41/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./41/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./41/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./41/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./41/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./41")               = 0
[pid  5073] mkdir("./42", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5925 attached
 <unfinished ...>
[pid  5925] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5925] chdir("./42" <unfinished ...>
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 129
[pid  5925] <... chdir resumed>)        = 0
[pid  5925] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5925] setpgid(0, 0)               = 0
[pid  5925] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5925] write(3, "1000", 4)         = 4
[pid  5925] close(3)                    = 0
[pid  5925] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5925] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5925] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5925] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5925] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5925] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5926 attached
 <unfinished ...>
[pid  5926] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  5925] <... clone3 resumed> => {parent_tid=[130]}, 88) = 130
[pid  5926] set_robust_list(0x7f8785c4c9a0, 24) = 0
[pid  5925] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5926] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5925] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5926] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5925] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5926] memfd_create("syzkaller", 0 <unfinished ...>
[pid  5925] <... futex resumed>)        = 0
[pid  5925] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5926] <... memfd_create resumed>) = 3
[pid  5926] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5926] 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) = 16777216
[pid  5926] munmap(0x7f877d82c000, 138412032) = 0
[pid  5926] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5926] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5926] close(3)                    = 0
[pid  5926] mkdir("./file0", 0777)      = 0
[  133.107578][ T5926] loop0: detected capacity change from 0 to 32768
[  133.121322][ T5926] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5926)
[  133.137557][ T5926] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  133.146964][ T5926] BTRFS info (device loop0): force clearing of disk cache
[  133.154112][ T5926] BTRFS info (device loop0): setting nodatasum
[  133.160281][ T5926] BTRFS info (device loop0): allowing degraded mounts
[  133.167139][ T5926] BTRFS info (device loop0): enabling disk space caching
[  133.174246][ T5926] BTRFS info (device loop0): disk space caching is enabled
[  133.196803][ T5926] BTRFS info (device loop0): enabling ssd optimizations
[  133.203765][ T5926] BTRFS info (device loop0): auto enabling async discard
[  133.211952][ T5926] BTRFS info (device loop0): rebuilding free space tree
[  133.223712][ T5926] BTRFS info (device loop0): disabling free space tree
[  133.233958][ T5926] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  133.243607][ T5926] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  5926] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5926] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5926] chdir("./file0")            = 0
[pid  5926] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5926] close(4)                    = 0
[pid  5926] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5925] <... futex resumed>)        = 0
[pid  5926] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5925] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5926] <... futex resumed>)        = 0
[pid  5925] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5926] open("./file0", O_RDONLY)   = 4
[pid  5926] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[  133.256868][ T5926] BTRFS info (device loop0): checking UUID tree
[pid  5926] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5925] <... futex resumed>)        = 0
[pid  5925] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5926] <... futex resumed>)        = 0
[pid  5925] <... futex resumed>)        = 1
[pid  5926] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  5925] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5926] <... ioctl resumed>)        = 0
[pid  5926] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5925] <... futex resumed>)        = 0
[pid  5926] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5925] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5926] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5925] <... futex resumed>)        = 0
[pid  5926] 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}} <unfinished ...>
[pid  5925] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5925] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5925] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5925] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5925] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5925] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 5944 attached
 => {parent_tid=[131]}, 88) = 131
[pid  5944] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  5944] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  5925] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5944] <... set_robust_list resumed>) = 0
[pid  5925] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5944] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5925] <... futex resumed>)        = 0
[  133.309188][ T5926] BTRFS info (device loop0): balance: start -d -m
[  133.318582][ T5926] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  133.343111][ T5926] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5925] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5944] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5944] open("./file0", O_RDONLY)   = 5
[pid  5944] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5925] <... futex resumed>)        = 0
[pid  5944] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5925] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5944] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5925] <... futex resumed>)        = 0
[pid  5925] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[  133.393061][ T5926] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  5944] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  5925] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  5944] <... ioctl resumed>)        = 0
[pid  5944] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5944] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5926] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5926] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5926] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5925] close(3)                    = 0
[pid  5925] close(4)                    = 0
[pid  5925] close(5)                    = 0
[pid  5925] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5925] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5925] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5925] close(9)                    = -1 EBADF (Bad file descriptor)
[  133.549207][ T5926] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  133.569086][ T5926] BTRFS info (device loop0): balance: ended with status: 0
[pid  5925] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5925] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5925] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5925] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5925] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5925] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5925] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5925] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5925] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5925] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5925] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5925] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5925] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5925] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5925] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5925] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5925] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5925] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5925] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5925] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5925] exit_group(0 <unfinished ...>
[pid  5944] <... futex resumed>)        = ?
[pid  5944] +++ exited with 0 +++
[pid  5925] <... exit_group resumed>)   = ?
[pid  5926] <... futex resumed>)        = ?
[pid  5926] +++ exited with 0 +++
[pid  5925] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=129, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=43 /* 0.43 s */} ---
[pid  5073] umount2("./42", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./42", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./42/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./42/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./42/binderfs")     = 0
[pid  5073] umount2("./42/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./42/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./42/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./42/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./42/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./42/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./42")               = 0
[pid  5073] mkdir("./43", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5945 attached
, child_tidptr=0x5555570a9690) = 132
[pid  5945] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5945] chdir("./43")               = 0
[pid  5945] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5945] setpgid(0, 0)               = 0
[pid  5945] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5945] write(3, "1000", 4)         = 4
[pid  5945] close(3)                    = 0
[pid  5945] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5945] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5945] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5945] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5945] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5945] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5946 attached
 <unfinished ...>
[pid  5946] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  5945] <... clone3 resumed> => {parent_tid=[133]}, 88) = 133
[pid  5946] <... rseq resumed>)         = 0
[pid  5945] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5946] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5945] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5946] <... set_robust_list resumed>) = 0
[pid  5945] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5946] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5945] <... futex resumed>)        = 0
[pid  5946] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5945] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5946] memfd_create("syzkaller", 0) = 3
[pid  5946] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5946] 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) = 16777216
[pid  5946] munmap(0x7f877d82c000, 138412032) = 0
[pid  5946] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5946] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5946] close(3)                    = 0
[pid  5946] mkdir("./file0", 0777)      = 0
[  134.245831][ T5946] loop0: detected capacity change from 0 to 32768
[  134.259998][ T5946] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5946)
[  134.275279][ T5946] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  134.284572][ T5946] BTRFS info (device loop0): force clearing of disk cache
[  134.291696][ T5946] BTRFS info (device loop0): setting nodatasum
[  134.297941][ T5946] BTRFS info (device loop0): allowing degraded mounts
[  134.304814][ T5946] BTRFS info (device loop0): enabling disk space caching
[  134.311849][ T5946] BTRFS info (device loop0): disk space caching is enabled
[  134.334222][ T5946] BTRFS info (device loop0): enabling ssd optimizations
[  134.341178][ T5946] BTRFS info (device loop0): auto enabling async discard
[  134.349231][ T5946] BTRFS info (device loop0): rebuilding free space tree
[  134.361448][ T5946] BTRFS info (device loop0): disabling free space tree
[  134.368494][ T5946] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  134.378191][ T5946] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  5946] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5946] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5946] chdir("./file0")            = 0
[pid  5946] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5946] close(4)                    = 0
[pid  5946] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5946] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5945] <... futex resumed>)        = 0
[pid  5945] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[  134.391604][ T5946] BTRFS info (device loop0): checking UUID tree
[pid  5945] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5946] <... futex resumed>)        = 0
[pid  5946] open("./file0", O_RDONLY)   = 4
[pid  5946] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5946] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5945] <... futex resumed>)        = 0
[pid  5946] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5945] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5946] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  5945] <... futex resumed>)        = 0
[pid  5945] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5946] <... ioctl resumed>)        = 0
[pid  5946] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5945] <... futex resumed>)        = 0
[pid  5945] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5945] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5946] 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}} <unfinished ...>
[pid  5945] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  5945] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5945] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5945] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5945] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[  134.452768][ T5946] BTRFS info (device loop0): balance: start -d -m
[  134.461081][ T5946] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  134.492837][ T5946] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5945] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 5964 attached
 <unfinished ...>
[pid  5964] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  5945] <... clone3 resumed> => {parent_tid=[134]}, 88) = 134
[pid  5964] <... rseq resumed>)         = 0
[pid  5945] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5964] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  5945] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5964] <... set_robust_list resumed>) = 0
[pid  5945] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5964] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5945] <... futex resumed>)        = 0
[pid  5945] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5964] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5964] open("./file0", O_RDONLY)   = 5
[pid  5964] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5964] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5945] <... futex resumed>)        = 0
[pid  5945] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5964] <... futex resumed>)        = 0
[pid  5945] <... futex resumed>)        = 1
[pid  5964] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  5945] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5964] <... ioctl resumed>)        = 0
[pid  5964] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  134.612283][ T5946] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  5964] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5946] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5946] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5946] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5945] close(3)                    = 0
[pid  5945] close(4)                    = 0
[pid  5945] close(5)                    = 0
[pid  5945] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5945] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5945] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5945] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5945] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5945] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5945] close(12)                   = -1 EBADF (Bad file descriptor)
[  134.681823][ T5946] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  134.701563][ T5946] BTRFS info (device loop0): balance: ended with status: 0
[pid  5945] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5945] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5945] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5945] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5945] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5945] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5945] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5945] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5945] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5945] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5945] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5945] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5945] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5945] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5945] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5945] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5945] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5945] exit_group(0)               = ?
[pid  5964] <... futex resumed>)        = ?
[pid  5946] <... futex resumed>)        = ?
[pid  5964] +++ exited with 0 +++
[pid  5946] +++ exited with 0 +++
[pid  5945] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=132, si_uid=0, si_status=0, si_utime=0, si_stime=38 /* 0.38 s */} ---
[pid  5073] umount2("./43", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./43", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./43/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./43/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./43/binderfs")     = 0
[pid  5073] umount2("./43/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./43/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./43/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./43/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./43/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./43/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./43")               = 0
[pid  5073] mkdir("./44", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5965 attached
, child_tidptr=0x5555570a9690) = 135
[pid  5965] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5965] chdir("./44")               = 0
[pid  5965] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5965] setpgid(0, 0)               = 0
[pid  5965] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5965] write(3, "1000", 4)         = 4
[pid  5965] close(3)                    = 0
[pid  5965] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5965] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5965] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5965] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5965] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5965] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5966 attached
 <unfinished ...>
[pid  5966] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  5965] <... clone3 resumed> => {parent_tid=[136]}, 88) = 136
[pid  5966] <... rseq resumed>)         = 0
[pid  5965] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5966] set_robust_list(0x7f8785c4c9a0, 24) = 0
[pid  5965] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5966] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5965] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5966] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5965] <... futex resumed>)        = 0
[pid  5966] memfd_create("syzkaller", 0 <unfinished ...>
[pid  5965] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5966] <... memfd_create resumed>) = 3
[pid  5966] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5966] 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) = 16777216
[pid  5966] munmap(0x7f877d82c000, 138412032) = 0
[pid  5966] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5966] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5966] close(3)                    = 0
[pid  5966] mkdir("./file0", 0777)      = 0
[  135.239908][ T5966] loop0: detected capacity change from 0 to 32768
[  135.249335][ T5966] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5966)
[  135.265829][ T5966] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  135.275114][ T5966] BTRFS info (device loop0): force clearing of disk cache
[  135.282217][ T5966] BTRFS info (device loop0): setting nodatasum
[  135.288404][ T5966] BTRFS info (device loop0): allowing degraded mounts
[  135.295213][ T5966] BTRFS info (device loop0): enabling disk space caching
[  135.302223][ T5966] BTRFS info (device loop0): disk space caching is enabled
[  135.323580][ T5966] BTRFS info (device loop0): enabling ssd optimizations
[  135.330761][ T5966] BTRFS info (device loop0): auto enabling async discard
[pid  5966] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5966] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5966] chdir("./file0")            = 0
[pid  5966] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5966] close(4)                    = 0
[pid  5966] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5966] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5965] <... futex resumed>)        = 0
[pid  5965] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5966] <... futex resumed>)        = 0
[pid  5965] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[  135.339166][ T5966] BTRFS info (device loop0): rebuilding free space tree
[  135.351615][ T5966] BTRFS info (device loop0): disabling free space tree
[  135.358784][ T5966] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  135.368443][ T5966] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  135.381585][ T5966] BTRFS info (device loop0): checking UUID tree
[pid  5966] open("./file0", O_RDONLY)   = 4
[pid  5966] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5966] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5965] <... futex resumed>)        = 0
[pid  5965] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5966] <... futex resumed>)        = 0
[pid  5965] <... futex resumed>)        = 1
[pid  5966] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  5965] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5966] <... ioctl resumed>)        = 0
[pid  5966] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5965] <... futex resumed>)        = 0
[pid  5966] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5965] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5966] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5965] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5966] 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}} <unfinished ...>
[pid  5965] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  5965] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5965] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5965] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5965] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5965] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[137]}, 88) = 137
[pid  5965] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5965] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5965] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 5984 attached
 <unfinished ...>
[pid  5984] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  5984] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  5984] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5984] open("./file0", O_RDONLY)   = 5
[pid  5984] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5984] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5965] <... futex resumed>)        = 0
[pid  5965] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5984] <... futex resumed>)        = 0
[pid  5965] <... futex resumed>)        = 1
[pid  5984] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  135.456752][ T5966] BTRFS info (device loop0): balance: start -d -m
[  135.465608][ T5966] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  135.496387][ T5966] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5965] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5984] <... ioctl resumed>)        = 0
[pid  5984] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  135.656844][ T5966] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  135.680486][ T5966] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  135.699894][ T5966] BTRFS info (device loop0): balance: ended with status: 0
[pid  5984] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5966] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5966] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5965] close(3)                    = 0
[pid  5965] close(4)                    = 0
[pid  5966] <... futex resumed>)        = 0
[pid  5965] close(5)                    = 0
[pid  5966] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5965] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5965] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5965] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5965] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5965] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5965] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5965] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5965] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5965] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5965] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5965] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5965] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5965] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5965] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5965] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5965] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5965] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5965] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5965] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5965] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5965] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5965] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5965] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5965] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5965] exit_group(0 <unfinished ...>
[pid  5984] <... futex resumed>)        = ?
[pid  5966] <... futex resumed>)        = ?
[pid  5965] <... exit_group resumed>)   = ?
[pid  5984] +++ exited with 0 +++
[pid  5966] +++ exited with 0 +++
[pid  5965] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=135, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=40 /* 0.40 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./44", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./44", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./44/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./44/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./44/binderfs")     = 0
[pid  5073] umount2("./44/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./44/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./44/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./44/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./44/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./44/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./44")               = 0
[pid  5073] mkdir("./45", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5985 attached
, child_tidptr=0x5555570a9690) = 138
[pid  5985] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5985] chdir("./45")               = 0
[pid  5985] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5985] setpgid(0, 0)               = 0
[pid  5985] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5985] write(3, "1000", 4)         = 4
[pid  5985] close(3)                    = 0
[pid  5985] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5985] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5985] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  5985] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5985] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5985] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 5986 attached
 => {parent_tid=[139]}, 88) = 139
[pid  5985] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  5986] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  5985] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  5986] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  5985] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5986] <... set_robust_list resumed>) = 0
[pid  5985] <... futex resumed>)        = 0
[pid  5986] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5985] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  5986] memfd_create("syzkaller", 0) = 3
[pid  5986] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  5986] 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) = 16777216
[pid  5986] munmap(0x7f877d82c000, 138412032) = 0
[pid  5986] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  5986] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  5986] close(3)                    = 0
[pid  5986] mkdir("./file0", 0777)      = 0
[  136.331202][ T5986] loop0: detected capacity change from 0 to 32768
[  136.345788][ T5986] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (5986)
[  136.362679][ T5986] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  136.372072][ T5986] BTRFS info (device loop0): force clearing of disk cache
[  136.379257][ T5986] BTRFS info (device loop0): setting nodatasum
[  136.385488][ T5986] BTRFS info (device loop0): allowing degraded mounts
[  136.392267][ T5986] BTRFS info (device loop0): enabling disk space caching
[  136.399497][ T5986] BTRFS info (device loop0): disk space caching is enabled
[  136.420768][ T5986] BTRFS info (device loop0): enabling ssd optimizations
[  136.427762][ T5986] BTRFS info (device loop0): auto enabling async discard
[  136.436379][ T5986] BTRFS info (device loop0): rebuilding free space tree
[  136.448254][ T5986] BTRFS info (device loop0): disabling free space tree
[  136.455239][ T5986] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  136.465436][ T5986] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  5986] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  5986] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  5986] chdir("./file0")            = 0
[pid  5986] ioctl(4, LOOP_CLR_FD)       = 0
[pid  5986] close(4)                    = 0
[pid  5986] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5986] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5985] <... futex resumed>)        = 0
[pid  5985] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5986] <... futex resumed>)        = 0
[pid  5985] <... futex resumed>)        = 1
[pid  5985] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5986] open("./file0", O_RDONLY)   = 4
[  136.478616][ T5986] BTRFS info (device loop0): checking UUID tree
[pid  5986] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5986] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5985] <... futex resumed>)        = 0
[pid  5985] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5986] <... futex resumed>)        = 0
[pid  5986] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  5986] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5985] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  5986] <... futex resumed>)        = 0
[pid  5986] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5985] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  5985] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5986] <... futex resumed>)        = 0
[pid  5985] <... futex resumed>)        = 1
[pid  5986] 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}} <unfinished ...>
[  136.562209][ T5986] BTRFS info (device loop0): balance: start -d -m
[  136.572707][ T5986] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  5985] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5985] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5985] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  5985] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  5985] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  5985] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[140]}, 88) = 140
[pid  5985] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  5985] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  5985] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 6004 attached
 <unfinished ...>
[pid  6004] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6004] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6004] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6004] open("./file0", O_RDONLY)   = 5
[pid  6004] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  5985] <... futex resumed>)        = 0
[pid  6004] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5985] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6004] <... futex resumed>)        = 0
[pid  5985] <... futex resumed>)        = 1
[pid  6004] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  136.607306][ T5986] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  5985] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  5985] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  6004] <... ioctl resumed>)        = 0
[pid  6004] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  136.742548][ T5986] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  136.768454][ T5986] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  6004] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5986] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  5986] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  5985] close(3 <unfinished ...>
[pid  5986] <... futex resumed>)        = 0
[pid  5985] <... close resumed>)        = 0
[pid  5986] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  5985] close(4)                    = 0
[pid  5985] close(5)                    = 0
[pid  5985] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  5985] close(7)                    = -1 EBADF (Bad file descriptor)
[  136.788794][ T5986] BTRFS info (device loop0): balance: ended with status: 0
[pid  5985] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5985] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5985] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5985] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5985] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5985] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5985] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5985] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5985] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5985] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5985] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5985] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5985] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5985] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5985] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5985] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5985] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5985] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5985] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5985] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5985] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5985] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5985] exit_group(0 <unfinished ...>
[pid  6004] <... futex resumed>)        = ?
[pid  5986] <... futex resumed>)        = ?
[pid  5985] <... exit_group resumed>)   = ?
[pid  6004] +++ exited with 0 +++
[pid  5986] +++ exited with 0 +++
[pid  5985] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=138, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=42 /* 0.42 s */} ---
[pid  5073] umount2("./45", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./45", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./45/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./45/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./45/binderfs")     = 0
[pid  5073] umount2("./45/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./45/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./45/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./45/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./45/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./45/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./45")               = 0
[pid  5073] mkdir("./46", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6005 attached
, child_tidptr=0x5555570a9690) = 141
[pid  6005] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6005] chdir("./46")               = 0
[pid  6005] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6005] setpgid(0, 0)               = 0
[pid  6005] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6005] write(3, "1000", 4)         = 4
[pid  6005] close(3)                    = 0
[pid  6005] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6005] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6005] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6005] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6005] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6005] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6006 attached
 <unfinished ...>
[pid  6006] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  6005] <... clone3 resumed> => {parent_tid=[142]}, 88) = 142
[pid  6006] <... rseq resumed>)         = 0
[pid  6005] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6006] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6005] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6006] <... set_robust_list resumed>) = 0
[pid  6005] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6006] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6005] <... futex resumed>)        = 0
[pid  6006] memfd_create("syzkaller", 0 <unfinished ...>
[pid  6005] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6006] <... memfd_create resumed>) = 3
[pid  6006] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6006] 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) = 16777216
[pid  6006] munmap(0x7f877d82c000, 138412032) = 0
[pid  6006] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6006] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6006] close(3)                    = 0
[pid  6006] mkdir("./file0", 0777)      = 0
[  137.337536][ T6006] loop0: detected capacity change from 0 to 32768
[  137.351386][ T6006] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6006)
[  137.369282][ T6006] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  137.378602][ T6006] BTRFS info (device loop0): force clearing of disk cache
[  137.385771][ T6006] BTRFS info (device loop0): setting nodatasum
[  137.391957][ T6006] BTRFS info (device loop0): allowing degraded mounts
[  137.398769][ T6006] BTRFS info (device loop0): enabling disk space caching
[  137.405811][ T6006] BTRFS info (device loop0): disk space caching is enabled
[  137.427310][ T6006] BTRFS info (device loop0): enabling ssd optimizations
[  137.434325][ T6006] BTRFS info (device loop0): auto enabling async discard
[  137.442146][ T6006] BTRFS info (device loop0): rebuilding free space tree
[  137.455073][ T6006] BTRFS info (device loop0): disabling free space tree
[  137.461971][ T6006] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  137.471896][ T6006] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  6006] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6006] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6006] chdir("./file0")            = 0
[pid  6006] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6006] close(4)                    = 0
[pid  6006] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6005] <... futex resumed>)        = 0
[pid  6006] <... futex resumed>)        = 1
[pid  6005] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6006] open("./file0", O_RDONLY <unfinished ...>
[pid  6005] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6006] <... open resumed>)         = 4
[pid  6006] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6005] <... futex resumed>)        = 0
[pid  6006] <... futex resumed>)        = 1
[pid  6005] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6006] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  6005] <... futex resumed>)        = 0
[pid  6006] <... ioctl resumed>)        = 0
[pid  6005] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6006] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6005] <... futex resumed>)        = 0
[pid  6006] <... futex resumed>)        = 1
[pid  6005] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6006] 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}} <unfinished ...>
[pid  6005] <... futex resumed>)        = 0
[  137.485287][ T6006] BTRFS info (device loop0): checking UUID tree
[pid  6005] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6005] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6005] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6005] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6005] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6005] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 6024 attached
 => {parent_tid=[143]}, 88) = 143
[pid  6024] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6005] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6024] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  6005] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6024] <... set_robust_list resumed>) = 0
[pid  6005] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6024] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6005] <... futex resumed>)        = 0
[pid  6024] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6024] open("./file0", O_RDONLY <unfinished ...>
[pid  6005] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6024] <... open resumed>)         = 5
[pid  6024] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6005] <... futex resumed>)        = 0
[pid  6024] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6005] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6024] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[  137.523562][ T6006] BTRFS info (device loop0): balance: start -d -m
[  137.533164][ T6006] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  137.560098][ T6006] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6024] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  6005] <... futex resumed>)        = 0
[pid  6005] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6024] <... ioctl resumed>)        = 0
[pid  6024] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  137.752575][ T6006] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  137.778450][ T6006] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  6024] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6006] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6006] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6006] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6005] close(3)                    = 0
[pid  6005] close(4)                    = 0
[pid  6005] close(5)                    = 0
[pid  6005] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6005] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6005] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6005] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6005] close(10)                   = -1 EBADF (Bad file descriptor)
[  137.797557][ T6006] BTRFS info (device loop0): balance: ended with status: 0
[pid  6005] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6005] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6005] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6005] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6005] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6005] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6005] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6005] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6005] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6005] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6005] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6005] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6005] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6005] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6005] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6005] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6005] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6005] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6005] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6005] exit_group(0 <unfinished ...>
[pid  6024] <... futex resumed>)        = ?
[pid  6024] +++ exited with 0 +++
[pid  6006] <... futex resumed>)        = ?
[pid  6005] <... exit_group resumed>)   = ?
[pid  6006] +++ exited with 0 +++
[pid  6005] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=141, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=40 /* 0.40 s */} ---
[pid  5073] umount2("./46", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./46", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./46/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./46/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./46/binderfs")     = 0
[pid  5073] umount2("./46/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./46/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./46/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./46/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./46/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./46/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./46")               = 0
[pid  5073] mkdir("./47", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6025 attached
, child_tidptr=0x5555570a9690) = 144
[pid  6025] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6025] chdir("./47")               = 0
[pid  6025] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6025] setpgid(0, 0)               = 0
[pid  6025] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6025] write(3, "1000", 4)         = 4
[pid  6025] close(3)                    = 0
[pid  6025] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6025] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6025] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6025] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6025] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6025] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6026 attached
 <unfinished ...>
[pid  6026] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  6026] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6025] <... clone3 resumed> => {parent_tid=[145]}, 88) = 145
[pid  6026] <... set_robust_list resumed>) = 0
[pid  6025] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6026] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6025] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6026] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6025] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6026] memfd_create("syzkaller", 0 <unfinished ...>
[pid  6025] <... futex resumed>)        = 0
[pid  6025] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6026] <... memfd_create resumed>) = 3
[pid  6026] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6026] 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) = 16777216
[pid  6026] munmap(0x7f877d82c000, 138412032) = 0
[pid  6026] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6026] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6026] close(3)                    = 0
[pid  6026] mkdir("./file0", 0777)      = 0
[  138.370499][ T6026] loop0: detected capacity change from 0 to 32768
[  138.394727][ T6026] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6026)
[  138.410990][ T6026] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  138.420255][ T6026] BTRFS info (device loop0): force clearing of disk cache
[  138.427388][ T6026] BTRFS info (device loop0): setting nodatasum
[  138.433543][ T6026] BTRFS info (device loop0): allowing degraded mounts
[  138.440357][ T6026] BTRFS info (device loop0): enabling disk space caching
[  138.447431][ T6026] BTRFS info (device loop0): disk space caching is enabled
[  138.468675][ T6026] BTRFS info (device loop0): enabling ssd optimizations
[  138.475667][ T6026] BTRFS info (device loop0): auto enabling async discard
[  138.483823][ T6026] BTRFS info (device loop0): rebuilding free space tree
[  138.495752][ T6026] BTRFS info (device loop0): disabling free space tree
[  138.502652][ T6026] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  6026] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6026] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6026] chdir("./file0")            = 0
[pid  6026] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6026] close(4)                    = 0
[pid  6026] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6026] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6025] <... futex resumed>)        = 0
[pid  6025] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6026] <... futex resumed>)        = 0
[pid  6025] <... futex resumed>)        = 1
[pid  6026] open("./file0", O_RDONLY <unfinished ...>
[pid  6025] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6026] <... open resumed>)         = 4
[pid  6026] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6025] <... futex resumed>)        = 0
[pid  6025] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6026] <... futex resumed>)        = 1
[pid  6025] <... futex resumed>)        = 0
[pid  6026] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  6025] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6026] <... ioctl resumed>)        = 0
[pid  6026] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6025] <... futex resumed>)        = 0
[pid  6025] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6026] <... futex resumed>)        = 1
[pid  6025] <... futex resumed>)        = 0
[pid  6026] 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}} <unfinished ...>
[  138.512362][ T6026] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  138.525577][ T6026] BTRFS info (device loop0): checking UUID tree
[pid  6025] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6025] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6025] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6025] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6025] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6025] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[146]}, 88) = 146
./strace-static-x86_64: Process 6044 attached
[pid  6025] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6044] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  6025] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6044] <... rseq resumed>)         = 0
[pid  6025] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6044] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  6025] <... futex resumed>)        = 0
[pid  6044] <... set_robust_list resumed>) = 0
[pid  6044] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6044] open("./file0", O_RDONLY <unfinished ...>
[pid  6025] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6044] <... open resumed>)         = 5
[pid  6044] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6025] <... futex resumed>)        = 0
[pid  6044] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6025] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6044] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6025] <... futex resumed>)        = 0
[pid  6044] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  138.584878][ T6026] BTRFS info (device loop0): balance: start -d -m
[  138.594893][ T6026] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  138.618853][ T6026] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6025] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[  138.704286][ T6026] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  6044] <... ioctl resumed>)        = 0
[pid  6044] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6044] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6026] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6026] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6025] close(3 <unfinished ...>
[pid  6026] <... futex resumed>)        = 0
[pid  6026] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6025] <... close resumed>)        = 0
[pid  6025] close(4)                    = 0
[pid  6025] close(5)                    = 0
[pid  6025] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6025] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6025] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6025] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6025] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6025] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6025] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6025] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6025] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6025] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6025] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6025] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6025] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6025] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6025] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6025] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6025] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6025] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6025] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6025] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6025] close(26)                   = -1 EBADF (Bad file descriptor)
[  138.808933][ T6026] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  138.828956][ T6026] BTRFS info (device loop0): balance: ended with status: 0
[pid  6025] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6025] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6025] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6025] exit_group(0 <unfinished ...>
[pid  6044] <... futex resumed>)        = ?
[pid  6025] <... exit_group resumed>)   = ?
[pid  6044] +++ exited with 0 +++
[pid  6026] <... futex resumed>)        = ?
[pid  6026] +++ exited with 0 +++
[pid  6025] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=144, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=39 /* 0.39 s */} ---
[pid  5073] umount2("./47", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./47", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./47/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./47/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./47/binderfs")     = 0
[pid  5073] umount2("./47/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./47/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./47/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./47/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./47/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./47/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./47")               = 0
[pid  5073] mkdir("./48", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6045 attached
, child_tidptr=0x5555570a9690) = 147
[pid  6045] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6045] chdir("./48")               = 0
[pid  6045] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6045] setpgid(0, 0)               = 0
[pid  6045] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6045] write(3, "1000", 4)         = 4
[pid  6045] close(3)                    = 0
[pid  6045] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6045] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6045] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6045] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6045] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6045] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6046 attached
 => {parent_tid=[148]}, 88) = 148
[pid  6046] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  6046] set_robust_list(0x7f8785c4c9a0, 24) = 0
[pid  6046] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6045] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6046] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6045] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6046] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6045] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6046] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6045] <... futex resumed>)        = 0
[pid  6046] memfd_create("syzkaller", 0 <unfinished ...>
[pid  6045] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6046] <... memfd_create resumed>) = 3
[pid  6046] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6046] 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) = 16777216
[pid  6046] munmap(0x7f877d82c000, 138412032) = 0
[pid  6046] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6046] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6046] close(3)                    = 0
[pid  6046] mkdir("./file0", 0777)      = 0
[  139.389944][ T6046] loop0: detected capacity change from 0 to 32768
[  139.404960][ T6046] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6046)
[  139.421101][ T6046] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  139.430586][ T6046] BTRFS info (device loop0): force clearing of disk cache
[  139.437765][ T6046] BTRFS info (device loop0): setting nodatasum
[  139.443978][ T6046] BTRFS info (device loop0): allowing degraded mounts
[  139.450759][ T6046] BTRFS info (device loop0): enabling disk space caching
[  139.457850][ T6046] BTRFS info (device loop0): disk space caching is enabled
[  139.479724][ T6046] BTRFS info (device loop0): enabling ssd optimizations
[  139.486775][ T6046] BTRFS info (device loop0): auto enabling async discard
[  139.494814][ T6046] BTRFS info (device loop0): rebuilding free space tree
[  139.506629][ T6046] BTRFS info (device loop0): disabling free space tree
[  139.513516][ T6046] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  139.523207][ T6046] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  6046] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6046] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6046] chdir("./file0")            = 0
[pid  6046] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6046] close(4)                    = 0
[  139.536470][ T6046] BTRFS info (device loop0): checking UUID tree
[pid  6046] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6045] <... futex resumed>)        = 0
[pid  6046] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6045] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6046] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6045] <... futex resumed>)        = 0
[pid  6046] open("./file0", O_RDONLY <unfinished ...>
[pid  6045] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6046] <... open resumed>)         = 4
[pid  6046] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6045] <... futex resumed>)        = 0
[pid  6045] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6046] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  6045] <... futex resumed>)        = 0
[pid  6045] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6046] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6045] <... futex resumed>)        = 0
[pid  6045] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6045] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6046] 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}} <unfinished ...>
[pid  6045] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  6045] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  6045] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6045] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[  139.639006][ T6046] BTRFS info (device loop0): balance: start -d -m
[  139.649004][ T6046] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  6045] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6045] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6045] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[149]}, 88) = 149
./strace-static-x86_64: Process 6064 attached
[pid  6045] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6064] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  6045] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6064] <... rseq resumed>)         = 0
[pid  6064] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6064] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6064] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6045] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6064] <... futex resumed>)        = 0
[pid  6045] <... futex resumed>)        = 1
[pid  6064] open("./file0", O_RDONLY <unfinished ...>
[pid  6045] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6064] <... open resumed>)         = 5
[pid  6064] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6045] <... futex resumed>)        = 0
[pid  6064] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6045] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6064] <... futex resumed>)        = 0
[pid  6045] <... futex resumed>)        = 1
[pid  6064] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  139.682380][ T6046] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6045] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6045] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[  139.776118][ T6046] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  6064] <... ioctl resumed>)        = 0
[pid  6064] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6064] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6046] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6046] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6046] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6045] close(3)                    = 0
[pid  6045] close(4)                    = 0
[pid  6045] close(5)                    = 0
[pid  6045] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6045] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6045] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6045] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6045] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6045] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6045] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6045] close(13)                   = -1 EBADF (Bad file descriptor)
[  139.845917][ T6046] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  139.865916][ T6046] BTRFS info (device loop0): balance: ended with status: 0
[pid  6045] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6045] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6045] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6045] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6045] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6045] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6045] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6045] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6045] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6045] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6045] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6045] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6045] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6045] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6045] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6045] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6045] exit_group(0)               = ?
[pid  6064] <... futex resumed>)        = ?
[pid  6046] <... futex resumed>)        = ?
[pid  6046] +++ exited with 0 +++
[pid  6064] +++ exited with 0 +++
[pid  6045] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=147, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=42 /* 0.42 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./48", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./48", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./48/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./48/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./48/binderfs")     = 0
[pid  5073] umount2("./48/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./48/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./48/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./48/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./48/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./48/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./48")               = 0
[pid  5073] mkdir("./49", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6065 attached
 <unfinished ...>
[pid  6065] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 150
[pid  6065] chdir("./49")               = 0
[pid  6065] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6065] setpgid(0, 0)               = 0
[pid  6065] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6065] write(3, "1000", 4)         = 4
[pid  6065] close(3)                    = 0
[pid  6065] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6065] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6065] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6065] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6065] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6065] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6066 attached
 => {parent_tid=[151]}, 88) = 151
[pid  6066] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  6065] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6066] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6065] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6066] <... set_robust_list resumed>) = 0
[pid  6065] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6066] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6065] <... futex resumed>)        = 0
[pid  6065] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6066] memfd_create("syzkaller", 0) = 3
[pid  6066] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6066] 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) = 16777216
[pid  6066] munmap(0x7f877d82c000, 138412032) = 0
[pid  6066] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6066] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6066] close(3)                    = 0
[pid  6066] mkdir("./file0", 0777)      = 0
[  140.753596][ T6066] loop0: detected capacity change from 0 to 32768
[  140.777838][ T6066] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6066)
[  140.794343][ T6066] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  140.803611][ T6066] BTRFS info (device loop0): force clearing of disk cache
[  140.810811][ T6066] BTRFS info (device loop0): setting nodatasum
[  140.817031][ T6066] BTRFS info (device loop0): allowing degraded mounts
[  140.823800][ T6066] BTRFS info (device loop0): enabling disk space caching
[  140.830882][ T6066] BTRFS info (device loop0): disk space caching is enabled
[  140.852415][ T6066] BTRFS info (device loop0): enabling ssd optimizations
[  140.859425][ T6066] BTRFS info (device loop0): auto enabling async discard
[  140.867359][ T6066] BTRFS info (device loop0): rebuilding free space tree
[  140.879406][ T6066] BTRFS info (device loop0): disabling free space tree
[  140.886356][ T6066] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  6066] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6066] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6066] chdir("./file0")            = 0
[pid  6066] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6066] close(4)                    = 0
[pid  6066] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6066] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6065] <... futex resumed>)        = 0
[pid  6065] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6066] <... futex resumed>)        = 0
[pid  6065] <... futex resumed>)        = 1
[pid  6066] open("./file0", O_RDONLY <unfinished ...>
[pid  6065] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6066] <... open resumed>)         = 4
[pid  6066] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6065] <... futex resumed>)        = 0
[pid  6066] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  6065] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6066] <... ioctl resumed>)        = 0
[pid  6065] <... futex resumed>)        = 0
[pid  6066] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6065] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6066] <... futex resumed>)        = 0
[pid  6065] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6066] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6065] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6066] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6065] <... futex resumed>)        = 0
[pid  6066] 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}} <unfinished ...>
[  140.896042][ T6066] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  140.909062][ T6066] BTRFS info (device loop0): checking UUID tree
[pid  6065] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6065] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  6065] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6065] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6065] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6065] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6065] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 6084 attached
 => {parent_tid=[152]}, 88) = 152
[pid  6084] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  6065] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6084] <... rseq resumed>)         = 0
[pid  6084] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  6065] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6084] <... set_robust_list resumed>) = 0
[pid  6065] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6084] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6065] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6084] open("./file0", O_RDONLY)   = 5
[pid  6084] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6065] <... futex resumed>)        = 0
[pid  6065] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6084] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  6065] <... futex resumed>)        = 0
[  140.959938][ T6066] BTRFS info (device loop0): balance: start -d -m
[  140.967656][ T6066] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  140.992542][ T6066] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6065] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6084] <... ioctl resumed>)        = 0
[pid  6084] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  141.166120][ T6066] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  141.189554][ T6066] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  6084] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6066] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6066] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6065] close(3 <unfinished ...>
[pid  6066] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6065] <... close resumed>)        = 0
[pid  6065] close(4)                    = 0
[pid  6065] close(5)                    = 0
[pid  6065] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6065] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6065] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6065] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6065] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6065] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6065] close(12)                   = -1 EBADF (Bad file descriptor)
[  141.209824][ T6066] BTRFS info (device loop0): balance: ended with status: 0
[pid  6065] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6065] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6065] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6065] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6065] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6065] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6065] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6065] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6065] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6065] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6065] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6065] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6065] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6065] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6065] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6065] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6065] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6065] exit_group(0 <unfinished ...>
[pid  6084] <... futex resumed>)        = ?
[pid  6066] <... futex resumed>)        = ?
[pid  6065] <... exit_group resumed>)   = ?
[pid  6084] +++ exited with 0 +++
[pid  6066] +++ exited with 0 +++
[pid  6065] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=150, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=39 /* 0.39 s */} ---
[pid  5073] umount2("./49", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./49", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./49/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./49/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./49/binderfs")     = 0
[pid  5073] umount2("./49/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./49/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./49/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./49/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./49/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./49/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./49")               = 0
[pid  5073] mkdir("./50", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6085 attached
, child_tidptr=0x5555570a9690) = 153
[pid  6085] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6085] chdir("./50")               = 0
[pid  6085] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6085] setpgid(0, 0)               = 0
[pid  6085] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6085] write(3, "1000", 4)         = 4
[pid  6085] close(3)                    = 0
[pid  6085] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6085] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6085] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6085] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6085] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6085] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6086 attached
 <unfinished ...>
[pid  6086] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  6086] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6085] <... clone3 resumed> => {parent_tid=[154]}, 88) = 154
[pid  6086] <... set_robust_list resumed>) = 0
[pid  6085] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6086] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6085] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6086] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6085] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6086] memfd_create("syzkaller", 0 <unfinished ...>
[pid  6085] <... futex resumed>)        = 0
[pid  6085] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6086] <... memfd_create resumed>) = 3
[pid  6086] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6086] 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) = 16777216
[pid  6086] munmap(0x7f877d82c000, 138412032) = 0
[pid  6086] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6086] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6086] close(3)                    = 0
[pid  6086] mkdir("./file0", 0777)      = 0
[  141.827981][ T6086] loop0: detected capacity change from 0 to 32768
[  141.851855][ T6086] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6086)
[  141.868172][ T6086] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  141.877481][ T6086] BTRFS info (device loop0): force clearing of disk cache
[  141.884720][ T6086] BTRFS info (device loop0): setting nodatasum
[  141.890939][ T6086] BTRFS info (device loop0): allowing degraded mounts
[  141.897782][ T6086] BTRFS info (device loop0): enabling disk space caching
[  141.904981][ T6086] BTRFS info (device loop0): disk space caching is enabled
[  141.926756][ T6086] BTRFS info (device loop0): enabling ssd optimizations
[  141.933733][ T6086] BTRFS info (device loop0): auto enabling async discard
[  141.942463][ T6086] BTRFS info (device loop0): rebuilding free space tree
[  141.955480][ T6086] BTRFS info (device loop0): disabling free space tree
[  141.962441][ T6086] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  6086] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6086] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6086] chdir("./file0")            = 0
[pid  6086] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6086] close(4)                    = 0
[  141.972198][ T6086] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  141.985721][ T6086] BTRFS info (device loop0): checking UUID tree
[pid  6086] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6085] <... futex resumed>)        = 0
[pid  6086] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6085] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6086] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6086] open("./file0", O_RDONLY)   = 4
[pid  6085] <... futex resumed>)        = 0
[pid  6085] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6086] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6085] <... futex resumed>)        = 0
[pid  6086] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6085] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6086] <... futex resumed>)        = 0
[pid  6085] <... futex resumed>)        = 1
[pid  6086] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  6085] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6086] <... ioctl resumed>)        = 0
[pid  6086] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6085] <... futex resumed>)        = 0
[pid  6086] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6085] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6085] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6086] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[  142.094412][ T6086] BTRFS info (device loop0): balance: start -d -m
[  142.103120][ T6086] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  6086] 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}} <unfinished ...>
[pid  6085] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  6085] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6085] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6085] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6085] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6085] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[155]}, 88) = 155
[pid  6085] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6085] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6085] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 6104 attached
 <unfinished ...>
[pid  6104] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6104] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6104] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6104] open("./file0", O_RDONLY)   = 5
[pid  6104] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6085] <... futex resumed>)        = 0
[pid  6104] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6085] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6104] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6085] <... futex resumed>)        = 0
[pid  6104] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  142.135459][ T6086] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6085] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6104] <... ioctl resumed>)        = 0
[pid  6104] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  142.276303][ T6086] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  142.300463][ T6086] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  6104] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6086] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6086] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6086] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6085] close(3)                    = 0
[pid  6085] close(4)                    = 0
[pid  6085] close(5)                    = 0
[pid  6085] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6085] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6085] close(8)                    = -1 EBADF (Bad file descriptor)
[  142.320040][ T6086] BTRFS info (device loop0): balance: ended with status: 0
[pid  6085] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6085] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6085] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6085] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6085] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6085] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6085] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6085] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6085] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6085] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6085] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6085] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6085] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6085] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6085] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6085] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6085] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6085] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6085] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6085] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6085] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6085] exit_group(0)               = ?
[pid  6104] <... futex resumed>)        = ?
[pid  6104] +++ exited with 0 +++
[pid  6086] <... futex resumed>)        = ?
[pid  6086] +++ exited with 0 +++
[pid  6085] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=153, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=39 /* 0.39 s */} ---
[pid  5073] umount2("./50", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./50", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./50/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./50/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./50/binderfs")     = 0
[pid  5073] umount2("./50/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./50/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./50/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./50/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./50/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./50/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./50")               = 0
[pid  5073] mkdir("./51", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6105 attached
, child_tidptr=0x5555570a9690) = 156
[pid  6105] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6105] chdir("./51")               = 0
[pid  6105] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6105] setpgid(0, 0)               = 0
[pid  6105] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6105] write(3, "1000", 4)         = 4
[pid  6105] close(3)                    = 0
[pid  6105] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6105] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6105] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6105] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6105] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6105] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6106 attached
 => {parent_tid=[157]}, 88) = 157
[pid  6106] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  6106] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6105] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6106] <... set_robust_list resumed>) = 0
[pid  6105] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6106] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6105] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6106] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6105] <... futex resumed>)        = 0
[pid  6105] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6106] memfd_create("syzkaller", 0) = 3
[pid  6106] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6106] 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) = 16777216
[pid  6106] munmap(0x7f877d82c000, 138412032) = 0
[pid  6106] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6106] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6106] close(3)                    = 0
[pid  6106] mkdir("./file0", 0777)      = 0
[  142.935588][ T6106] loop0: detected capacity change from 0 to 32768
[  142.958979][ T6106] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6106)
[  142.974708][ T6106] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  142.984017][ T6106] BTRFS info (device loop0): force clearing of disk cache
[  142.991135][ T6106] BTRFS info (device loop0): setting nodatasum
[  142.997358][ T6106] BTRFS info (device loop0): allowing degraded mounts
[  143.004182][ T6106] BTRFS info (device loop0): enabling disk space caching
[  143.011195][ T6106] BTRFS info (device loop0): disk space caching is enabled
[  143.033332][ T6106] BTRFS info (device loop0): enabling ssd optimizations
[  143.040396][ T6106] BTRFS info (device loop0): auto enabling async discard
[  143.048896][ T6106] BTRFS info (device loop0): rebuilding free space tree
[  143.060586][ T6106] BTRFS info (device loop0): disabling free space tree
[  143.067573][ T6106] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  6106] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6106] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6106] chdir("./file0")            = 0
[pid  6106] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6106] close(4)                    = 0
[pid  6106] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6105] <... futex resumed>)        = 0
[pid  6106] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6105] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6106] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6105] <... futex resumed>)        = 0
[pid  6106] open("./file0", O_RDONLY <unfinished ...>
[pid  6105] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6106] <... open resumed>)         = 4
[pid  6106] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6105] <... futex resumed>)        = 0
[pid  6106] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable)
[pid  6105] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6106] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  6105] <... futex resumed>)        = 0
[pid  6106] <... ioctl resumed>)        = 0
[pid  6105] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[  143.077294][ T6106] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  143.090673][ T6106] BTRFS info (device loop0): checking UUID tree
[pid  6106] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6105] <... futex resumed>)        = 0
[pid  6106] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6105] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6106] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6106] 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}} <unfinished ...>
[pid  6105] <... futex resumed>)        = 0
[  143.161457][ T6106] BTRFS info (device loop0): balance: start -d -m
[  143.173033][ T6106] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  6105] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6105] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6105] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6105] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6105] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6105] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[158]}, 88) = 158
[pid  6105] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6105] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6105] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 6124 attached
 <unfinished ...>
[pid  6124] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6124] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6124] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6124] open("./file0", O_RDONLY)   = 5
[pid  6124] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6105] <... futex resumed>)        = 0
[pid  6124] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6105] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6124] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6105] <... futex resumed>)        = 0
[pid  6124] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  143.203178][ T6106] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6105] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6124] <... ioctl resumed>)        = 0
[pid  6124] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  143.347639][ T6106] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  143.371437][ T6106] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  6124] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6106] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6106] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6105] close(3 <unfinished ...>
[pid  6106] <... futex resumed>)        = 0
[pid  6105] <... close resumed>)        = 0
[pid  6105] close(4 <unfinished ...>
[pid  6106] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6105] <... close resumed>)        = 0
[pid  6105] close(5)                    = 0
[pid  6105] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6105] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6105] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6105] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6105] close(10)                   = -1 EBADF (Bad file descriptor)
[  143.391076][ T6106] BTRFS info (device loop0): balance: ended with status: 0
[pid  6105] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6105] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6105] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6105] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6105] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6105] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6105] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6105] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6105] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6105] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6105] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6105] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6105] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6105] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6105] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6105] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6105] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6105] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6105] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6105] exit_group(0 <unfinished ...>
[pid  6124] <... futex resumed>)        = ?
[pid  6124] +++ exited with 0 +++
[pid  6105] <... exit_group resumed>)   = ?
[pid  6106] <... futex resumed>)        = ?
[pid  6106] +++ exited with 0 +++
[pid  6105] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=156, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=38 /* 0.38 s */} ---
[pid  5073] umount2("./51", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./51", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./51/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./51/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./51/binderfs")     = 0
[pid  5073] umount2("./51/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./51/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./51/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./51/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./51/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./51/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./51")               = 0
[pid  5073] mkdir("./52", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6125 attached
, child_tidptr=0x5555570a9690) = 159
[pid  6125] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6125] chdir("./52")               = 0
[pid  6125] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6125] setpgid(0, 0)               = 0
[pid  6125] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6125] write(3, "1000", 4)         = 4
[pid  6125] close(3)                    = 0
[pid  6125] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6125] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6125] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6125] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6125] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6125] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6126 attached
 <unfinished ...>
[pid  6126] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  6125] <... clone3 resumed> => {parent_tid=[160]}, 88) = 160
[pid  6126] <... rseq resumed>)         = 0
[pid  6125] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6126] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6125] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6126] <... set_robust_list resumed>) = 0
[pid  6125] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6126] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6125] <... futex resumed>)        = 0
[pid  6126] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6125] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6126] memfd_create("syzkaller", 0) = 3
[pid  6126] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6126] 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) = 16777216
[pid  6126] munmap(0x7f877d82c000, 138412032) = 0
[pid  6126] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6126] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6126] close(3)                    = 0
[pid  6126] mkdir("./file0", 0777)      = 0
[  144.144002][ T6126] loop0: detected capacity change from 0 to 32768
[  144.159375][ T6126] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6126)
[  144.175638][ T6126] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  144.184970][ T6126] BTRFS info (device loop0): force clearing of disk cache
[  144.192072][ T6126] BTRFS info (device loop0): setting nodatasum
[  144.198265][ T6126] BTRFS info (device loop0): allowing degraded mounts
[  144.205047][ T6126] BTRFS info (device loop0): enabling disk space caching
[  144.212067][ T6126] BTRFS info (device loop0): disk space caching is enabled
[  144.233658][ T6126] BTRFS info (device loop0): enabling ssd optimizations
[  144.240646][ T6126] BTRFS info (device loop0): auto enabling async discard
[  144.248843][ T6126] BTRFS info (device loop0): rebuilding free space tree
[  144.260820][ T6126] BTRFS info (device loop0): disabling free space tree
[  144.267864][ T6126] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  144.277555][ T6126] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  6126] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6126] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6126] chdir("./file0")            = 0
[pid  6126] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6126] close(4)                    = 0
[pid  6126] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6125] <... futex resumed>)        = 0
[  144.291194][ T6126] BTRFS info (device loop0): checking UUID tree
[pid  6126] open("./file0", O_RDONLY <unfinished ...>
[pid  6125] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6126] <... open resumed>)         = 4
[pid  6125] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6126] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6125] <... futex resumed>)        = 0
[pid  6126] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6125] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6125] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6126] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6126] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  6126] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6125] <... futex resumed>)        = 0
[pid  6125] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6125] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6126] <... futex resumed>)        = 1
[pid  6126] 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}} <unfinished ...>
[pid  6125] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  6125] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6125] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6125] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6125] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6125] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[161]}, 88) = 161
[pid  6125] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6125] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6125] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 6144 attached
 <unfinished ...>
[pid  6144] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6144] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6144] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6144] open("./file0", O_RDONLY)   = 5
[pid  6144] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6125] <... futex resumed>)        = 0
[pid  6125] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6144] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  6125] <... futex resumed>)        = 0
[  144.382195][ T6126] BTRFS info (device loop0): balance: start -d -m
[  144.392279][ T6126] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  144.420807][ T6126] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6125] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6144] <... ioctl resumed>)        = 0
[pid  6144] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6144] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6126] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6126] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6126] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6125] close(3)                    = 0
[pid  6125] close(4)                    = 0
[pid  6125] close(5)                    = 0
[pid  6125] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6125] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6125] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6125] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6125] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6125] close(11)                   = -1 EBADF (Bad file descriptor)
[  144.560475][ T6126] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  144.583972][ T6126] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  144.603087][ T6126] BTRFS info (device loop0): balance: ended with status: 0
[pid  6125] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6125] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6125] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6125] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6125] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6125] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6125] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6125] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6125] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6125] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6125] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6125] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6125] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6125] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6125] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6125] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6125] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6125] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6125] exit_group(0)               = ?
[pid  6144] <... futex resumed>)        = ?
[pid  6126] <... futex resumed>)        = ?
[pid  6144] +++ exited with 0 +++
[pid  6126] +++ exited with 0 +++
[pid  6125] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=159, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=42 /* 0.42 s */} ---
[pid  5073] umount2("./52", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./52", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./52/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./52/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./52/binderfs")     = 0
[pid  5073] umount2("./52/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./52/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./52/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./52/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./52/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./52/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./52")               = 0
[pid  5073] mkdir("./53", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6145 attached
, child_tidptr=0x5555570a9690) = 162
[pid  6145] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6145] chdir("./53")               = 0
[pid  6145] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6145] setpgid(0, 0)               = 0
[pid  6145] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6145] write(3, "1000", 4)         = 4
[pid  6145] close(3)                    = 0
[pid  6145] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6145] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6145] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6145] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6145] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6145] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6146 attached
 <unfinished ...>
[pid  6146] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  6145] <... clone3 resumed> => {parent_tid=[163]}, 88) = 163
[pid  6146] set_robust_list(0x7f8785c4c9a0, 24) = 0
[pid  6145] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6146] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6145] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6146] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6145] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6146] memfd_create("syzkaller", 0 <unfinished ...>
[pid  6145] <... futex resumed>)        = 0
[pid  6145] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6146] <... memfd_create resumed>) = 3
[pid  6146] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6146] 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) = 16777216
[pid  6146] munmap(0x7f877d82c000, 138412032) = 0
[pid  6146] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6146] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6146] close(3)                    = 0
[pid  6146] mkdir("./file0", 0777)      = 0
[  145.278721][ T6146] loop0: detected capacity change from 0 to 32768
[  145.294542][ T6146] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6146)
[  145.309845][ T6146] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  145.319113][ T6146] BTRFS info (device loop0): force clearing of disk cache
[  145.326256][ T6146] BTRFS info (device loop0): setting nodatasum
[  145.332418][ T6146] BTRFS info (device loop0): allowing degraded mounts
[  145.339231][ T6146] BTRFS info (device loop0): enabling disk space caching
[  145.346309][ T6146] BTRFS info (device loop0): disk space caching is enabled
[  145.368136][ T6146] BTRFS info (device loop0): enabling ssd optimizations
[  145.375140][ T6146] BTRFS info (device loop0): auto enabling async discard
[  145.382942][ T6146] BTRFS info (device loop0): rebuilding free space tree
[  145.395133][ T6146] BTRFS info (device loop0): disabling free space tree
[  145.402009][ T6146] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  145.411693][ T6146] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  6146] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6146] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6146] chdir("./file0")            = 0
[pid  6146] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6146] close(4)                    = 0
[pid  6146] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6145] <... futex resumed>)        = 0
[pid  6145] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6145] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6146] open("./file0", O_RDONLY)   = 4
[  145.425236][ T6146] BTRFS info (device loop0): checking UUID tree
[pid  6146] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6146] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6145] <... futex resumed>)        = 0
[pid  6145] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6146] <... futex resumed>)        = 0
[pid  6145] <... futex resumed>)        = 1
[pid  6146] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  6145] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6146] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6145] <... futex resumed>)        = 0
[pid  6145] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6146] 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}} <unfinished ...>
[pid  6145] <... futex resumed>)        = 0
[pid  6145] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6145] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6145] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6145] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6145] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6145] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 6164 attached
 => {parent_tid=[164]}, 88) = 164
[pid  6145] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6145] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6145] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6164] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6164] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6164] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6164] open("./file0", O_RDONLY)   = 5
[pid  6164] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6145] <... futex resumed>)        = 0
[pid  6164] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6145] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6164] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6145] <... futex resumed>)        = 0
[  145.486298][ T6146] BTRFS info (device loop0): balance: start -d -m
[  145.494490][ T6146] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  145.519138][ T6146] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6164] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  6145] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6164] <... ioctl resumed>)        = 0
[pid  6164] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  145.694149][ T6146] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  145.722418][ T6146] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  6164] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6146] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6146] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6145] close(3 <unfinished ...>
[pid  6146] <... futex resumed>)        = 0
[pid  6146] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6145] <... close resumed>)        = 0
[pid  6145] close(4)                    = 0
[pid  6145] close(5)                    = 0
[pid  6145] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6145] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6145] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6145] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6145] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6145] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6145] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6145] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6145] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6145] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6145] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6145] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6145] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6145] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6145] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6145] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6145] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6145] close(23)                   = -1 EBADF (Bad file descriptor)
[  145.745543][ T6146] BTRFS info (device loop0): balance: ended with status: 0
[pid  6145] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6145] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6145] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6145] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6145] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6145] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6145] exit_group(0 <unfinished ...>
[pid  6164] <... futex resumed>)        = ?
[pid  6146] <... futex resumed>)        = ?
[pid  6164] +++ exited with 0 +++
[pid  6146] +++ exited with 0 +++
[pid  6145] <... exit_group resumed>)   = ?
[pid  6145] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=162, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=41 /* 0.41 s */} ---
[pid  5073] umount2("./53", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./53", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./53/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./53/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./53/binderfs")     = 0
[pid  5073] umount2("./53/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./53/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./53/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./53/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./53/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./53/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./53")               = 0
[pid  5073] mkdir("./54", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6165 attached
, child_tidptr=0x5555570a9690) = 165
[pid  6165] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6165] chdir("./54")               = 0
[pid  6165] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6165] setpgid(0, 0)               = 0
[pid  6165] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6165] write(3, "1000", 4)         = 4
[pid  6165] close(3)                    = 0
[pid  6165] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6165] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6165] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6165] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6165] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6165] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6166 attached
 <unfinished ...>
[pid  6166] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  6165] <... clone3 resumed> => {parent_tid=[166]}, 88) = 166
[pid  6166] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6165] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6166] <... set_robust_list resumed>) = 0
[pid  6165] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6166] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6165] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6166] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6166] memfd_create("syzkaller", 0 <unfinished ...>
[pid  6165] <... futex resumed>)        = 0
[pid  6165] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6166] <... memfd_create resumed>) = 3
[pid  6166] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6166] 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) = 16777216
[pid  6166] munmap(0x7f877d82c000, 138412032) = 0
[pid  6166] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6166] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6166] close(3)                    = 0
[pid  6166] mkdir("./file0", 0777)      = 0
[  146.327201][ T6166] loop0: detected capacity change from 0 to 32768
[  146.341456][ T6166] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6166)
[  146.357091][ T6166] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  146.366440][ T6166] BTRFS info (device loop0): force clearing of disk cache
[  146.373542][ T6166] BTRFS info (device loop0): setting nodatasum
[  146.380028][ T6166] BTRFS info (device loop0): allowing degraded mounts
[  146.387031][ T6166] BTRFS info (device loop0): enabling disk space caching
[  146.394139][ T6166] BTRFS info (device loop0): disk space caching is enabled
[  146.415575][ T6166] BTRFS info (device loop0): enabling ssd optimizations
[  146.422510][ T6166] BTRFS info (device loop0): auto enabling async discard
[  146.431185][ T6166] BTRFS info (device loop0): rebuilding free space tree
[  146.442867][ T6166] BTRFS info (device loop0): disabling free space tree
[  146.449840][ T6166] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  146.459524][ T6166] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  6166] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6166] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6166] chdir("./file0")            = 0
[pid  6166] ioctl(4, LOOP_CLR_FD)       = 0
[  146.472755][ T6166] BTRFS info (device loop0): checking UUID tree
[pid  6166] close(4)                    = 0
[pid  6166] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6165] <... futex resumed>)        = 0
[pid  6166] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6165] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6166] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6165] <... futex resumed>)        = 0
[pid  6166] open("./file0", O_RDONLY <unfinished ...>
[pid  6165] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6166] <... open resumed>)         = 4
[pid  6166] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6166] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6165] <... futex resumed>)        = 0
[pid  6165] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6166] <... futex resumed>)        = 0
[pid  6165] <... futex resumed>)        = 1
[pid  6166] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  6165] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6166] <... ioctl resumed>)        = 0
[pid  6166] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6165] <... futex resumed>)        = 0
[pid  6165] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6166] 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}} <unfinished ...>
[pid  6165] <... futex resumed>)        = 0
[pid  6165] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6165] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6165] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6165] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6165] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6165] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[167]}, 88) = 167
[pid  6165] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6165] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6165] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 6184 attached
 <unfinished ...>
[pid  6184] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6184] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6184] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6184] open("./file0", O_RDONLY)   = 5
[pid  6184] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6165] <... futex resumed>)        = 0
[pid  6184] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6165] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6184] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6184] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  6165] <... futex resumed>)        = 0
[  146.568586][ T6166] BTRFS info (device loop0): balance: start -d -m
[  146.577534][ T6166] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  146.605492][ T6166] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6165] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6165] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  6184] <... ioctl resumed>)        = 0
[pid  6184] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  146.758933][ T6166] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  146.785253][ T6166] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  6184] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6166] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6166] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6165] close(3)                    = 0
[pid  6166] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6165] close(4)                    = 0
[pid  6165] close(5)                    = 0
[pid  6165] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6165] close(7)                    = -1 EBADF (Bad file descriptor)
[  146.804639][ T6166] BTRFS info (device loop0): balance: ended with status: 0
[pid  6165] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6165] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6165] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6165] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6165] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6165] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6165] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6165] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6165] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6165] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6165] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6165] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6165] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6165] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6165] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6165] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6165] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6165] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6165] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6165] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6165] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6165] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6165] exit_group(0 <unfinished ...>
[pid  6184] <... futex resumed>)        = ?
[pid  6184] +++ exited with 0 +++
[pid  6166] <... futex resumed>)        = ?
[pid  6165] <... exit_group resumed>)   = ?
[pid  6166] +++ exited with 0 +++
[pid  6165] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=165, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=41 /* 0.41 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./54", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./54", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./54/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./54/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./54/binderfs")     = 0
[pid  5073] umount2("./54/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./54/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./54/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./54/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./54/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./54/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./54")               = 0
[pid  5073] mkdir("./55", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6185 attached
, child_tidptr=0x5555570a9690) = 168
[pid  6185] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6185] chdir("./55")               = 0
[pid  6185] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6185] setpgid(0, 0)               = 0
[pid  6185] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6185] write(3, "1000", 4)         = 4
[pid  6185] close(3)                    = 0
[pid  6185] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6185] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6185] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6185] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6185] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6185] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6186 attached
 <unfinished ...>
[pid  6186] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  6185] <... clone3 resumed> => {parent_tid=[169]}, 88) = 169
[pid  6186] <... rseq resumed>)         = 0
[pid  6185] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6186] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6185] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6186] <... set_robust_list resumed>) = 0
[pid  6185] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6186] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6185] <... futex resumed>)        = 0
[pid  6186] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6185] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6186] memfd_create("syzkaller", 0) = 3
[pid  6186] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6186] 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) = 16777216
[pid  6186] munmap(0x7f877d82c000, 138412032) = 0
[pid  6186] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6186] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6186] close(3)                    = 0
[pid  6186] mkdir("./file0", 0777)      = 0
[  147.429537][ T6186] loop0: detected capacity change from 0 to 32768
[  147.443217][ T6186] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6186)
[  147.459341][ T6186] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  147.468943][ T6186] BTRFS info (device loop0): force clearing of disk cache
[  147.476402][ T6186] BTRFS info (device loop0): setting nodatasum
[  147.482571][ T6186] BTRFS info (device loop0): allowing degraded mounts
[  147.489521][ T6186] BTRFS info (device loop0): enabling disk space caching
[  147.496656][ T6186] BTRFS info (device loop0): disk space caching is enabled
[  147.517462][ T6186] BTRFS info (device loop0): enabling ssd optimizations
[  147.524465][ T6186] BTRFS info (device loop0): auto enabling async discard
[  147.532382][ T6186] BTRFS info (device loop0): rebuilding free space tree
[  147.544971][ T6186] BTRFS info (device loop0): disabling free space tree
[  147.551862][ T6186] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  147.561557][ T6186] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  6186] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6186] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6186] chdir("./file0")            = 0
[pid  6186] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6186] close(4)                    = 0
[pid  6186] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6186] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6185] <... futex resumed>)        = 0
[pid  6186] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6185] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6186] open("./file0", O_RDONLY <unfinished ...>
[pid  6185] <... futex resumed>)        = 0
[pid  6186] <... open resumed>)         = 4
[  147.574710][ T6186] BTRFS info (device loop0): checking UUID tree
[pid  6185] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6186] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6185] <... futex resumed>)        = 0
[pid  6186] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6185] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6186] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6185] <... futex resumed>)        = 0
[pid  6185] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6186] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  6186] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6185] <... futex resumed>)        = 0
[pid  6186] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6185] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6185] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6186] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6186] 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}} <unfinished ...>
[pid  6185] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  6185] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6185] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6185] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6185] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6185] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[170]}, 88) = 170
[pid  6185] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6185] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6185] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 6204 attached
 <unfinished ...>
[pid  6204] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6204] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6204] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6204] open("./file0", O_RDONLY)   = 5
[pid  6204] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6185] <... futex resumed>)        = 0
[pid  6204] <... futex resumed>)        = 1
[pid  6204] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6185] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6204] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6185] <... futex resumed>)        = 0
[pid  6204] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  147.671888][ T6186] BTRFS info (device loop0): balance: start -d -m
[  147.680911][ T6186] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  147.710155][ T6186] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6185] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6185] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  6204] <... ioctl resumed>)        = 0
[pid  6204] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  147.851412][ T6186] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  147.876451][ T6186] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  6204] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6186] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6186] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6185] close(3 <unfinished ...>
[pid  6186] <... futex resumed>)        = 0
[pid  6185] <... close resumed>)        = 0
[pid  6186] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6185] close(4)                    = 0
[pid  6185] close(5)                    = 0
[pid  6185] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6185] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6185] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6185] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6185] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6185] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6185] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6185] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6185] close(14)                   = -1 EBADF (Bad file descriptor)
[  147.895273][ T6186] BTRFS info (device loop0): balance: ended with status: 0
[pid  6185] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6185] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6185] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6185] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6185] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6185] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6185] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6185] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6185] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6185] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6185] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6185] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6185] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6185] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6185] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6185] exit_group(0 <unfinished ...>
[pid  6204] <... futex resumed>)        = ?
[pid  6204] +++ exited with 0 +++
[pid  6186] <... futex resumed>)        = ?
[pid  6185] <... exit_group resumed>)   = ?
[pid  6186] +++ exited with 0 +++
[pid  6185] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=168, si_uid=0, si_status=0, si_utime=0, si_stime=41 /* 0.41 s */} ---
[pid  5073] umount2("./55", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./55", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./55/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./55/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./55/binderfs")     = 0
[pid  5073] umount2("./55/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./55/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./55/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./55/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./55/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./55/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./55")               = 0
[pid  5073] mkdir("./56", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6205 attached
, child_tidptr=0x5555570a9690) = 171
[pid  6205] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6205] chdir("./56")               = 0
[pid  6205] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6205] setpgid(0, 0)               = 0
[pid  6205] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6205] write(3, "1000", 4)         = 4
[pid  6205] close(3)                    = 0
[pid  6205] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6205] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6205] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6205] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6205] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6205] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6206 attached
 => {parent_tid=[172]}, 88) = 172
[pid  6206] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  6205] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6206] <... rseq resumed>)         = 0
[pid  6205] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6206] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6205] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6206] <... set_robust_list resumed>) = 0
[pid  6205] <... futex resumed>)        = 0
[pid  6206] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6205] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6206] memfd_create("syzkaller", 0) = 3
[pid  6206] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6206] 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) = 16777216
[pid  6206] munmap(0x7f877d82c000, 138412032) = 0
[pid  6206] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6206] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6206] close(3)                    = 0
[pid  6206] mkdir("./file0", 0777)      = 0
[  148.579056][ T6206] loop0: detected capacity change from 0 to 32768
[  148.593576][ T6206] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6206)
[  148.609224][ T6206] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  148.618555][ T6206] BTRFS info (device loop0): force clearing of disk cache
[  148.625707][ T6206] BTRFS info (device loop0): setting nodatasum
[  148.631881][ T6206] BTRFS info (device loop0): allowing degraded mounts
[  148.638752][ T6206] BTRFS info (device loop0): enabling disk space caching
[  148.645829][ T6206] BTRFS info (device loop0): disk space caching is enabled
[  148.667710][ T6206] BTRFS info (device loop0): enabling ssd optimizations
[  148.674696][ T6206] BTRFS info (device loop0): auto enabling async discard
[  148.683019][ T6206] BTRFS info (device loop0): rebuilding free space tree
[  148.695210][ T6206] BTRFS info (device loop0): disabling free space tree
[  148.702089][ T6206] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  148.711764][ T6206] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  6206] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6206] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6206] chdir("./file0")            = 0
[pid  6206] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6206] close(4)                    = 0
[pid  6206] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6205] <... futex resumed>)        = 0
[  148.725371][ T6206] BTRFS info (device loop0): checking UUID tree
[pid  6206] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable)
[pid  6205] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6206] open("./file0", O_RDONLY <unfinished ...>
[pid  6205] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6206] <... open resumed>)         = 4
[pid  6206] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6205] <... futex resumed>)        = 0
[pid  6205] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6206] <... futex resumed>)        = 1
[pid  6205] <... futex resumed>)        = 0
[pid  6206] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  6205] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6206] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6206] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6205] <... futex resumed>)        = 0
[pid  6206] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6205] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6206] 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}} <unfinished ...>
[pid  6205] <... futex resumed>)        = 0
[pid  6205] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6205] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6205] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6205] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6205] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6205] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[173]}, 88) = 173
[pid  6205] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6205] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6205] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 6224 attached
 <unfinished ...>
[pid  6224] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6224] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6224] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6224] open("./file0", O_RDONLY)   = 5
[pid  6224] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6205] <... futex resumed>)        = 0
[pid  6224] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  6205] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  148.792361][ T6206] BTRFS info (device loop0): balance: start -d -m
[  148.804239][ T6206] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  148.832417][ T6206] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6205] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6205] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  6224] <... ioctl resumed>)        = 0
[pid  6224] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  149.011414][ T6206] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  149.036764][ T6206] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  6224] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6206] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6206] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6205] close(3)                    = 0
[pid  6205] close(4)                    = 0
[pid  6205] close(5)                    = 0
[pid  6205] close(6 <unfinished ...>
[pid  6206] <... futex resumed>)        = 0
[pid  6205] <... close resumed>)        = -1 EBADF (Bad file descriptor)
[pid  6205] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6205] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6205] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6205] close(10 <unfinished ...>
[pid  6206] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6205] <... close resumed>)        = -1 EBADF (Bad file descriptor)
[pid  6205] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6205] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6205] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6205] close(14)                   = -1 EBADF (Bad file descriptor)
[  149.056254][ T6206] BTRFS info (device loop0): balance: ended with status: 0
[pid  6205] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6205] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6205] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6205] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6205] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6205] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6205] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6205] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6205] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6205] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6205] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6205] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6205] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6205] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6205] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6205] exit_group(0 <unfinished ...>
[pid  6224] <... futex resumed>)        = ?
[pid  6206] <... futex resumed>)        = ?
[pid  6205] <... exit_group resumed>)   = ?
[pid  6224] +++ exited with 0 +++
[pid  6206] +++ exited with 0 +++
[pid  6205] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=171, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=39 /* 0.39 s */} ---
[pid  5073] umount2("./56", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./56", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./56/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./56/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./56/binderfs")     = 0
[pid  5073] umount2("./56/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./56/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./56/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./56/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./56/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./56/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./56")               = 0
[pid  5073] mkdir("./57", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6225 attached
 <unfinished ...>
[pid  6225] set_robust_list(0x5555570a96a0, 24 <unfinished ...>
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 174
[pid  6225] <... set_robust_list resumed>) = 0
[pid  6225] chdir("./57")               = 0
[pid  6225] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6225] setpgid(0, 0)               = 0
[pid  6225] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6225] write(3, "1000", 4)         = 4
[pid  6225] close(3)                    = 0
[pid  6225] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6225] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6225] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6225] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6225] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6225] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6226 attached
 <unfinished ...>
[pid  6226] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  6225] <... clone3 resumed> => {parent_tid=[175]}, 88) = 175
[pid  6226] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6225] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6226] <... set_robust_list resumed>) = 0
[pid  6225] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6226] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6225] <... futex resumed>)        = 0
[pid  6226] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6226] memfd_create("syzkaller", 0 <unfinished ...>
[pid  6225] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6226] <... memfd_create resumed>) = 3
[pid  6226] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6226] 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) = 16777216
[pid  6226] munmap(0x7f877d82c000, 138412032) = 0
[pid  6226] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6226] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6226] close(3)                    = 0
[pid  6226] mkdir("./file0", 0777)      = 0
[  149.655314][ T6226] loop0: detected capacity change from 0 to 32768
[  149.680830][ T6226] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6226)
[  149.696904][ T6226] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  149.706157][ T6226] BTRFS info (device loop0): force clearing of disk cache
[  149.713273][ T6226] BTRFS info (device loop0): setting nodatasum
[  149.719529][ T6226] BTRFS info (device loop0): allowing degraded mounts
[  149.726324][ T6226] BTRFS info (device loop0): enabling disk space caching
[  149.733328][ T6226] BTRFS info (device loop0): disk space caching is enabled
[  149.754485][ T6226] BTRFS info (device loop0): enabling ssd optimizations
[  149.761451][ T6226] BTRFS info (device loop0): auto enabling async discard
[  149.769715][ T6226] BTRFS info (device loop0): rebuilding free space tree
[  149.781873][ T6226] BTRFS info (device loop0): disabling free space tree
[  149.789157][ T6226] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  6226] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6226] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6226] chdir("./file0")            = 0
[pid  6226] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6226] close(4)                    = 0
[pid  6226] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6226] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6225] <... futex resumed>)        = 0
[pid  6226] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6225] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6226] open("./file0", O_RDONLY <unfinished ...>
[pid  6225] <... futex resumed>)        = 0
[pid  6226] <... open resumed>)         = 4
[  149.799007][ T6226] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  149.812630][ T6226] BTRFS info (device loop0): checking UUID tree
[pid  6225] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6226] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6225] <... futex resumed>)        = 0
[pid  6226] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6225] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6226] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6225] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6226] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  6226] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6226] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6225] <... futex resumed>)        = 0
[pid  6225] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6226] <... futex resumed>)        = 0
[pid  6225] <... futex resumed>)        = 1
[pid  6226] 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}} <unfinished ...>
[  149.896458][ T6226] BTRFS info (device loop0): balance: start -d -m
[  149.905834][ T6226] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  6225] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6225] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6225] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6225] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6225] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6225] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[176]}, 88) = 176
[pid  6225] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6225] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6225] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 6244 attached
 <unfinished ...>
[pid  6244] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6244] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6244] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6244] open("./file0", O_RDONLY)   = 5
[pid  6244] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6225] <... futex resumed>)        = 0
[pid  6225] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6244] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  6225] <... futex resumed>)        = 0
[  149.937521][ T6226] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6225] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6225] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  6225] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  6244] <... ioctl resumed>)        = 0
[pid  6244] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  150.057734][ T6226] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  6244] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6226] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6226] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6226] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6225] close(3)                    = 0
[pid  6225] close(4)                    = 0
[pid  6225] close(5)                    = 0
[pid  6225] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6225] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6225] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6225] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6225] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6225] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6225] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6225] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6225] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6225] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6225] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6225] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6225] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6225] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6225] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6225] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6225] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6225] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6225] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6225] close(25)                   = -1 EBADF (Bad file descriptor)
[  150.122373][ T6226] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  150.141862][ T6226] BTRFS info (device loop0): balance: ended with status: 0
[pid  6225] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6225] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6225] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6225] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6225] exit_group(0 <unfinished ...>
[pid  6244] <... futex resumed>)        = ?
[pid  6225] <... exit_group resumed>)   = ?
[pid  6244] +++ exited with 0 +++
[pid  6226] <... futex resumed>)        = ?
[pid  6226] +++ exited with 0 +++
[pid  6225] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=174, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=38 /* 0.38 s */} ---
[pid  5073] umount2("./57", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./57", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./57/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./57/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./57/binderfs")     = 0
[pid  5073] umount2("./57/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./57/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./57/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./57/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./57/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./57/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./57")               = 0
[pid  5073] mkdir("./58", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6245 attached
, child_tidptr=0x5555570a9690) = 177
[pid  6245] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6245] chdir("./58")               = 0
[pid  6245] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6245] setpgid(0, 0)               = 0
[pid  6245] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6245] write(3, "1000", 4)         = 4
[pid  6245] close(3)                    = 0
[pid  6245] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6245] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6245] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6245] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6245] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6245] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6246 attached
 <unfinished ...>
[pid  6246] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  6246] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6245] <... clone3 resumed> => {parent_tid=[178]}, 88) = 178
[pid  6246] <... set_robust_list resumed>) = 0
[pid  6245] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6246] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6245] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6246] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6245] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6246] memfd_create("syzkaller", 0 <unfinished ...>
[pid  6245] <... futex resumed>)        = 0
[pid  6245] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6246] <... memfd_create resumed>) = 3
[pid  6246] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6246] 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) = 16777216
[pid  6246] munmap(0x7f877d82c000, 138412032) = 0
[pid  6246] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6246] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6246] close(3)                    = 0
[pid  6246] mkdir("./file0", 0777)      = 0
[  150.715416][ T6246] loop0: detected capacity change from 0 to 32768
[  150.730918][ T6246] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6246)
[  150.746759][ T6246] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  150.756192][ T6246] BTRFS info (device loop0): force clearing of disk cache
[  150.763288][ T6246] BTRFS info (device loop0): setting nodatasum
[  150.769502][ T6246] BTRFS info (device loop0): allowing degraded mounts
[  150.776279][ T6246] BTRFS info (device loop0): enabling disk space caching
[  150.783288][ T6246] BTRFS info (device loop0): disk space caching is enabled
[  150.805503][ T6246] BTRFS info (device loop0): enabling ssd optimizations
[  150.812513][ T6246] BTRFS info (device loop0): auto enabling async discard
[  150.820807][ T6246] BTRFS info (device loop0): rebuilding free space tree
[  150.834558][ T6246] BTRFS info (device loop0): disabling free space tree
[  150.841505][ T6246] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  150.851354][ T6246] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  6246] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6246] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6246] chdir("./file0")            = 0
[pid  6246] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6246] close(4)                    = 0
[pid  6246] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6245] <... futex resumed>)        = 0
[pid  6246] <... futex resumed>)        = 1
[pid  6245] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6246] open("./file0", O_RDONLY <unfinished ...>
[pid  6245] <... futex resumed>)        = 0
[pid  6245] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6246] <... open resumed>)         = 4
[pid  6246] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6245] <... futex resumed>)        = 0
[pid  6246] <... futex resumed>)        = 1
[pid  6245] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6246] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  6245] <... futex resumed>)        = 0
[pid  6245] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6246] <... ioctl resumed>)        = 0
[pid  6246] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6245] <... futex resumed>)        = 0
[  150.864623][ T6246] BTRFS info (device loop0): checking UUID tree
[pid  6245] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6246] 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}} <unfinished ...>
[pid  6245] <... futex resumed>)        = 0
[pid  6245] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6245] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6245] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6245] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6245] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6245] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 6264 attached
 <unfinished ...>
[pid  6264] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6245] <... clone3 resumed> => {parent_tid=[179]}, 88) = 179
[pid  6245] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6264] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6245] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6264] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6264] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6245] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6264] <... futex resumed>)        = 0
[pid  6245] <... futex resumed>)        = 1
[pid  6264] open("./file0", O_RDONLY <unfinished ...>
[pid  6245] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6264] <... open resumed>)         = 5
[pid  6264] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6245] <... futex resumed>)        = 0
[pid  6264] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  6245] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  150.917156][ T6246] BTRFS info (device loop0): balance: start -d -m
[  150.925696][ T6246] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  150.953451][ T6246] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6245] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6264] <... ioctl resumed>)        = 0
[pid  6264] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  151.135081][ T6246] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  151.159705][ T6246] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  6264] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6246] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6246] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6246] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6245] close(3)                    = 0
[pid  6245] close(4)                    = 0
[pid  6245] close(5)                    = 0
[pid  6245] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6245] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6245] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6245] close(9)                    = -1 EBADF (Bad file descriptor)
[  151.179449][ T6246] BTRFS info (device loop0): balance: ended with status: 0
[pid  6245] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6245] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6245] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6245] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6245] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6245] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6245] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6245] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6245] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6245] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6245] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6245] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6245] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6245] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6245] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6245] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6245] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6245] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6245] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6245] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6245] exit_group(0 <unfinished ...>
[pid  6264] <... futex resumed>)        = ?
[pid  6246] <... futex resumed>)        = ?
[pid  6245] <... exit_group resumed>)   = ?
[pid  6246] +++ exited with 0 +++
[pid  6264] +++ exited with 0 +++
[pid  6245] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=177, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=40 /* 0.40 s */} ---
[pid  5073] umount2("./58", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./58", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./58/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./58/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./58/binderfs")     = 0
[pid  5073] umount2("./58/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./58/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./58/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./58/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./58/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./58/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./58")               = 0
[pid  5073] mkdir("./59", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6265 attached
, child_tidptr=0x5555570a9690) = 180
[pid  6265] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6265] chdir("./59")               = 0
[pid  6265] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6265] setpgid(0, 0)               = 0
[pid  6265] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6265] write(3, "1000", 4)         = 4
[pid  6265] close(3)                    = 0
[pid  6265] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6265] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6265] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6265] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6265] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6265] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6266 attached
 <unfinished ...>
[pid  6266] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  6265] <... clone3 resumed> => {parent_tid=[181]}, 88) = 181
[pid  6266] <... rseq resumed>)         = 0
[pid  6265] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6266] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6265] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6266] <... set_robust_list resumed>) = 0
[pid  6265] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6266] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6265] <... futex resumed>)        = 0
[pid  6266] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6265] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6266] memfd_create("syzkaller", 0) = 3
[pid  6266] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6266] 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) = 16777216
[pid  6266] munmap(0x7f877d82c000, 138412032) = 0
[pid  6266] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6266] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6266] close(3)                    = 0
[pid  6266] mkdir("./file0", 0777)      = 0
[  151.810479][ T6266] loop0: detected capacity change from 0 to 32768
[  151.834930][ T6266] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6266)
[  151.850658][ T6266] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  151.860019][ T6266] BTRFS info (device loop0): force clearing of disk cache
[  151.867196][ T6266] BTRFS info (device loop0): setting nodatasum
[  151.873356][ T6266] BTRFS info (device loop0): allowing degraded mounts
[  151.880198][ T6266] BTRFS info (device loop0): enabling disk space caching
[  151.887293][ T6266] BTRFS info (device loop0): disk space caching is enabled
[  151.909784][ T6266] BTRFS info (device loop0): enabling ssd optimizations
[  151.916802][ T6266] BTRFS info (device loop0): auto enabling async discard
[  151.925222][ T6266] BTRFS info (device loop0): rebuilding free space tree
[  151.937998][ T6266] BTRFS info (device loop0): disabling free space tree
[  151.945036][ T6266] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  6266] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6266] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6266] chdir("./file0")            = 0
[pid  6266] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6266] close(4)                    = 0
[pid  6266] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6265] <... futex resumed>)        = 0
[pid  6266] open("./file0", O_RDONLY <unfinished ...>
[pid  6265] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6266] <... open resumed>)         = 4
[  151.954799][ T6266] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  151.968097][ T6266] BTRFS info (device loop0): checking UUID tree
[pid  6265] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6266] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6266] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6265] <... futex resumed>)        = 0
[pid  6265] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6266] <... futex resumed>)        = 0
[pid  6266] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  6265] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6266] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6265] <... futex resumed>)        = 0
[pid  6265] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6265] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[  152.051393][ T6266] BTRFS info (device loop0): balance: start -d -m
[  152.059982][ T6266] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  6266] 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}} <unfinished ...>
[pid  6265] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  6265] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6265] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6265] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6265] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6265] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[182]}, 88) = 182
[pid  6265] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6265] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6265] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 6284 attached
 <unfinished ...>
[pid  6284] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6284] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6284] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6284] open("./file0", O_RDONLY)   = 5
[pid  6284] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6265] <... futex resumed>)        = 0
[pid  6284] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6265] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6284] <... futex resumed>)        = 0
[pid  6265] <... futex resumed>)        = 1
[pid  6284] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  152.094136][ T6266] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6265] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6284] <... ioctl resumed>)        = 0
[  152.204529][ T6266] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  6284] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6284] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6266] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6266] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6266] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6265] close(3)                    = 0
[pid  6265] close(4)                    = 0
[pid  6265] close(5)                    = 0
[pid  6265] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6265] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6265] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6265] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6265] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6265] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6265] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6265] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6265] close(14)                   = -1 EBADF (Bad file descriptor)
[  152.272390][ T6266] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  152.293981][ T6266] BTRFS info (device loop0): balance: ended with status: 0
[pid  6265] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6265] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6265] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6265] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6265] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6265] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6265] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6265] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6265] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6265] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6265] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6265] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6265] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6265] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6265] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6265] exit_group(0 <unfinished ...>
[pid  6284] <... futex resumed>)        = ?
[pid  6266] <... futex resumed>)        = ?
[pid  6265] <... exit_group resumed>)   = ?
[pid  6284] +++ exited with 0 +++
[pid  6266] +++ exited with 0 +++
[pid  6265] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=180, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=40 /* 0.40 s */} ---
[pid  5073] umount2("./59", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./59", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./59/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./59/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./59/binderfs")     = 0
[pid  5073] umount2("./59/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./59/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./59/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./59/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./59/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./59/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./59")               = 0
[pid  5073] mkdir("./60", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6285 attached
, child_tidptr=0x5555570a9690) = 183
[pid  6285] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6285] chdir("./60")               = 0
[pid  6285] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6285] setpgid(0, 0)               = 0
[pid  6285] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6285] write(3, "1000", 4)         = 4
[pid  6285] close(3)                    = 0
[pid  6285] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6285] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6285] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6285] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6285] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6285] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6286 attached
 <unfinished ...>
[pid  6286] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  6286] set_robust_list(0x7f8785c4c9a0, 24) = 0
[pid  6285] <... clone3 resumed> => {parent_tid=[184]}, 88) = 184
[pid  6286] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6285] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6286] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6285] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6286] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6285] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6286] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6286] memfd_create("syzkaller", 0 <unfinished ...>
[pid  6285] <... futex resumed>)        = 0
[pid  6285] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6286] <... memfd_create resumed>) = 3
[pid  6286] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6286] 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) = 16777216
[pid  6286] munmap(0x7f877d82c000, 138412032) = 0
[pid  6286] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6286] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6286] close(3)                    = 0
[pid  6286] mkdir("./file0", 0777)      = 0
[  153.030816][ T6286] loop0: detected capacity change from 0 to 32768
[  153.056215][ T6286] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6286)
[  153.072194][ T6286] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  153.081455][ T6286] BTRFS info (device loop0): force clearing of disk cache
[  153.088597][ T6286] BTRFS info (device loop0): setting nodatasum
[  153.094777][ T6286] BTRFS info (device loop0): allowing degraded mounts
[  153.101528][ T6286] BTRFS info (device loop0): enabling disk space caching
[  153.108571][ T6286] BTRFS info (device loop0): disk space caching is enabled
[  153.130730][ T6286] BTRFS info (device loop0): enabling ssd optimizations
[  153.137804][ T6286] BTRFS info (device loop0): auto enabling async discard
[  153.146055][ T6286] BTRFS info (device loop0): rebuilding free space tree
[  153.159686][ T6286] BTRFS info (device loop0): disabling free space tree
[  153.166686][ T6286] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  6286] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6286] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6286] chdir("./file0")            = 0
[pid  6286] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6286] close(4)                    = 0
[pid  6286] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6285] <... futex resumed>)        = 0
[pid  6286] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6285] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6286] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6285] <... futex resumed>)        = 0
[pid  6286] open("./file0", O_RDONLY <unfinished ...>
[pid  6285] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6286] <... open resumed>)         = 4
[pid  6286] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6285] <... futex resumed>)        = 0
[pid  6286] <... futex resumed>)        = 1
[pid  6285] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6286] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  6285] <... futex resumed>)        = 0
[pid  6285] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6286] <... ioctl resumed>)        = 0
[pid  6286] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6285] <... futex resumed>)        = 0
[pid  6286] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6285] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6286] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6285] <... futex resumed>)        = 0
[pid  6286] 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}} <unfinished ...>
[  153.176713][ T6286] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  153.190554][ T6286] BTRFS info (device loop0): checking UUID tree
[pid  6285] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6285] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6285] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6285] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6285] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6285] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 6304 attached
 => {parent_tid=[185]}, 88) = 185
[pid  6304] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  6285] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6304] <... rseq resumed>)         = 0
[pid  6304] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6304] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[  153.228083][ T6286] BTRFS info (device loop0): balance: start -d -m
[  153.236131][ T6286] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  153.262521][ T6286] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6304] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6285] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6304] <... futex resumed>)        = 0
[pid  6285] <... futex resumed>)        = 1
[pid  6304] open("./file0", O_RDONLY)   = 5
[pid  6304] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6285] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6304] <... futex resumed>)        = 0
[pid  6304] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6285] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6285] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6304] <... futex resumed>)        = 0
[pid  6285] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[  153.322722][ T6286] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  6304] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  6285] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[  153.415442][ T6286] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  6304] <... ioctl resumed>)        = 0
[pid  6304] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6304] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6286] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6286] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6285] close(3 <unfinished ...>
[pid  6286] <... futex resumed>)        = 0
[pid  6285] <... close resumed>)        = 0
[pid  6286] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6285] close(4)                    = 0
[pid  6285] close(5)                    = 0
[pid  6285] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6285] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6285] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6285] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6285] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6285] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6285] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6285] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6285] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6285] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6285] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6285] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6285] close(18)                   = -1 EBADF (Bad file descriptor)
[  153.476440][ T6286] BTRFS info (device loop0): balance: ended with status: 0
[pid  6285] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6285] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6285] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6285] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6285] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6285] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6285] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6285] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6285] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6285] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6285] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6285] exit_group(0 <unfinished ...>
[pid  6304] <... futex resumed>)        = ?
[pid  6286] <... futex resumed>)        = ?
[pid  6285] <... exit_group resumed>)   = ?
[pid  6304] +++ exited with 0 +++
[pid  6286] +++ exited with 0 +++
[pid  6285] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=183, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=47 /* 0.47 s */} ---
[pid  5073] umount2("./60", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./60", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./60/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./60/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./60/binderfs")     = 0
[pid  5073] umount2("./60/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./60/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./60/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./60/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./60/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./60/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./60")               = 0
[pid  5073] mkdir("./61", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6305 attached
, child_tidptr=0x5555570a9690) = 186
[pid  6305] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6305] chdir("./61")               = 0
[pid  6305] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6305] setpgid(0, 0)               = 0
[pid  6305] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6305] write(3, "1000", 4)         = 4
[pid  6305] close(3)                    = 0
[pid  6305] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6305] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6305] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6305] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6305] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6305] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6306 attached
 <unfinished ...>
[pid  6306] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  6306] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6305] <... clone3 resumed> => {parent_tid=[187]}, 88) = 187
[pid  6306] <... set_robust_list resumed>) = 0
[pid  6305] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6306] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6305] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6306] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6305] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6306] memfd_create("syzkaller", 0 <unfinished ...>
[pid  6305] <... futex resumed>)        = 0
[pid  6305] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6306] <... memfd_create resumed>) = 3
[pid  6306] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6306] 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) = 16777216
[pid  6306] munmap(0x7f877d82c000, 138412032) = 0
[pid  6306] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6306] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6306] close(3)                    = 0
[pid  6306] mkdir("./file0", 0777)      = 0
[  154.062176][ T6306] loop0: detected capacity change from 0 to 32768
[  154.077957][ T6306] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6306)
[  154.094894][ T6306] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  154.104173][ T6306] BTRFS info (device loop0): force clearing of disk cache
[  154.111269][ T6306] BTRFS info (device loop0): setting nodatasum
[  154.117496][ T6306] BTRFS info (device loop0): allowing degraded mounts
[  154.124402][ T6306] BTRFS info (device loop0): enabling disk space caching
[  154.131423][ T6306] BTRFS info (device loop0): disk space caching is enabled
[  154.153367][ T6306] BTRFS info (device loop0): enabling ssd optimizations
[  154.160380][ T6306] BTRFS info (device loop0): auto enabling async discard
[  154.168728][ T6306] BTRFS info (device loop0): rebuilding free space tree
[  154.180514][ T6306] BTRFS info (device loop0): disabling free space tree
[  154.187571][ T6306] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  154.197276][ T6306] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  6306] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6306] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6306] chdir("./file0")            = 0
[pid  6306] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6306] close(4)                    = 0
[pid  6306] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6305] <... futex resumed>)        = 0
[pid  6305] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6305] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6306] <... futex resumed>)        = 1
[pid  6306] open("./file0", O_RDONLY)   = 4
[pid  6306] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6305] <... futex resumed>)        = 0
[pid  6306] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6305] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6306] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6306] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  6305] <... futex resumed>)        = 0
[pid  6306] <... ioctl resumed>)        = 0
[pid  6305] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6306] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6305] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6306] <... futex resumed>)        = 0
[pid  6305] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6306] 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}} <unfinished ...>
[pid  6305] <... futex resumed>)        = 0
[  154.211001][ T6306] BTRFS info (device loop0): checking UUID tree
[pid  6305] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6305] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6305] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6305] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6305] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6305] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[188]}, 88) = 188
./strace-static-x86_64: Process 6324 attached
[pid  6305] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6324] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  6305] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6324] <... rseq resumed>)         = 0
[pid  6324] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  6305] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6305] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6324] <... set_robust_list resumed>) = 0
[pid  6324] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6324] open("./file0", O_RDONLY)   = 5
[pid  6324] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[  154.253482][ T6306] BTRFS info (device loop0): balance: start -d -m
[  154.262240][ T6306] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  154.286891][ T6306] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6305] <... futex resumed>)        = 0
[pid  6324] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6305] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6324] <... futex resumed>)        = 0
[pid  6305] <... futex resumed>)        = 1
[pid  6324] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  6305] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6305] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  6305] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[  154.381086][ T6306] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  6324] <... ioctl resumed>)        = 0
[pid  6324] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6324] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6306] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6306] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6305] close(3 <unfinished ...>
[pid  6306] <... futex resumed>)        = 0
[pid  6305] <... close resumed>)        = 0
[pid  6306] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6305] close(4)                    = 0
[pid  6305] close(5)                    = 0
[pid  6305] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6305] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6305] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6305] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6305] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6305] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6305] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6305] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6305] close(14)                   = -1 EBADF (Bad file descriptor)
[  154.485532][ T6306] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  154.504690][ T6306] BTRFS info (device loop0): balance: ended with status: 0
[pid  6305] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6305] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6305] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6305] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6305] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6305] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6305] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6305] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6305] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6305] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6305] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6305] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6305] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6305] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6305] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6305] exit_group(0 <unfinished ...>
[pid  6306] <... futex resumed>)        = ?
[pid  6305] <... exit_group resumed>)   = ?
[pid  6306] +++ exited with 0 +++
[pid  6324] <... futex resumed>)        = ?
[pid  6324] +++ exited with 0 +++
[pid  6305] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=186, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=42 /* 0.42 s */} ---
[pid  5073] umount2("./61", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./61", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./61/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./61/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./61/binderfs")     = 0
[pid  5073] umount2("./61/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./61/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./61/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./61/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./61/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./61/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./61")               = 0
[pid  5073] mkdir("./62", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6325 attached
, child_tidptr=0x5555570a9690) = 189
[pid  6325] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6325] chdir("./62")               = 0
[pid  6325] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6325] setpgid(0, 0)               = 0
[pid  6325] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6325] write(3, "1000", 4)         = 4
[pid  6325] close(3)                    = 0
[pid  6325] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6325] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6325] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6325] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6325] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6325] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6326 attached
 => {parent_tid=[190]}, 88) = 190
[pid  6325] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6325] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6326] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  6325] <... futex resumed>)        = 0
[pid  6326] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6325] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6326] <... set_robust_list resumed>) = 0
[pid  6326] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6326] memfd_create("syzkaller", 0) = 3
[pid  6326] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6326] 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) = 16777216
[pid  6326] munmap(0x7f877d82c000, 138412032) = 0
[pid  6326] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6326] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6326] close(3)                    = 0
[pid  6326] mkdir("./file0", 0777)      = 0
[  155.101474][ T6326] loop0: detected capacity change from 0 to 32768
[  155.125930][ T6326] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6326)
[  155.141992][ T6326] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  155.151575][ T6326] BTRFS info (device loop0): force clearing of disk cache
[  155.158762][ T6326] BTRFS info (device loop0): setting nodatasum
[  155.165293][ T6326] BTRFS info (device loop0): allowing degraded mounts
[  155.172070][ T6326] BTRFS info (device loop0): enabling disk space caching
[  155.179161][ T6326] BTRFS info (device loop0): disk space caching is enabled
[  155.200723][ T6326] BTRFS info (device loop0): enabling ssd optimizations
[  155.207731][ T6326] BTRFS info (device loop0): auto enabling async discard
[  155.215843][ T6326] BTRFS info (device loop0): rebuilding free space tree
[  155.227870][ T6326] BTRFS info (device loop0): disabling free space tree
[  155.234823][ T6326] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  6326] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6326] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6326] chdir("./file0")            = 0
[pid  6326] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6326] close(4)                    = 0
[pid  6326] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6325] <... futex resumed>)        = 0
[pid  6325] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6326] open("./file0", O_RDONLY)   = 4
[pid  6325] <... futex resumed>)        = 0
[pid  6326] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6325] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6326] <... futex resumed>)        = 0
[pid  6325] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6326] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6325] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6326] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6325] <... futex resumed>)        = 0
[pid  6326] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  6325] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6326] <... ioctl resumed>)        = 0
[pid  6326] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6325] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6326] <... futex resumed>)        = 0
[pid  6326] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6325] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6326] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6325] <... futex resumed>)        = 0
[pid  6326] 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}} <unfinished ...>
[  155.244498][ T6326] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  155.257727][ T6326] BTRFS info (device loop0): checking UUID tree
[pid  6325] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6325] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6325] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6325] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6325] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6325] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[191]}, 88) = 191
[pid  6325] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6325] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
./strace-static-x86_64: Process 6344 attached
[pid  6325] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6344] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6344] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6344] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6344] open("./file0", O_RDONLY)   = 5
[pid  6344] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6344] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6325] <... futex resumed>)        = 0
[pid  6344] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6325] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[  155.311593][ T6326] BTRFS info (device loop0): balance: start -d -m
[  155.320536][ T6326] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  155.343325][ T6326] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6344] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  6325] <... futex resumed>)        = 0
[pid  6325] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6344] <... ioctl resumed>)        = 0
[pid  6344] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  155.510197][ T6326] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  155.535959][ T6326] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  6344] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6326] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6326] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6325] close(3 <unfinished ...>
[pid  6326] <... futex resumed>)        = 0
[pid  6326] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6325] <... close resumed>)        = 0
[pid  6325] close(4)                    = 0
[pid  6325] close(5)                    = 0
[pid  6325] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6325] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6325] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6325] close(9)                    = -1 EBADF (Bad file descriptor)
[  155.554895][ T6326] BTRFS info (device loop0): balance: ended with status: 0
[pid  6325] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6325] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6325] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6325] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6325] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6325] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6325] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6325] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6325] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6325] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6325] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6325] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6325] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6325] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6325] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6325] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6325] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6325] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6325] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6325] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6325] exit_group(0 <unfinished ...>
[pid  6326] <... futex resumed>)        = ?
[pid  6325] <... exit_group resumed>)   = ?
[pid  6344] <... futex resumed>)        = ?
[pid  6326] +++ exited with 0 +++
[pid  6344] +++ exited with 0 +++
[pid  6325] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=189, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=39 /* 0.39 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./62", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./62", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./62/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./62/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./62/binderfs")     = 0
[pid  5073] umount2("./62/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./62/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./62/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./62/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./62/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./62/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./62")               = 0
[pid  5073] mkdir("./63", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6345 attached
, child_tidptr=0x5555570a9690) = 192
[pid  6345] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6345] chdir("./63")               = 0
[pid  6345] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6345] setpgid(0, 0)               = 0
[pid  6345] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6345] write(3, "1000", 4)         = 4
[pid  6345] close(3)                    = 0
[pid  6345] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6345] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6345] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6345] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6345] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6345] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6346 attached
 <unfinished ...>
[pid  6346] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  6345] <... clone3 resumed> => {parent_tid=[193]}, 88) = 193
[pid  6346] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6345] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6346] <... set_robust_list resumed>) = 0
[pid  6345] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6346] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6345] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6346] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6345] <... futex resumed>)        = 0
[pid  6346] memfd_create("syzkaller", 0 <unfinished ...>
[pid  6345] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6346] <... memfd_create resumed>) = 3
[pid  6346] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6346] 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) = 16777216
[pid  6346] munmap(0x7f877d82c000, 138412032) = 0
[pid  6346] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6346] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6346] close(3)                    = 0
[pid  6346] mkdir("./file0", 0777)      = 0
[  156.159754][ T6346] loop0: detected capacity change from 0 to 32768
[  156.179359][ T6346] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6346)
[  156.195099][ T6346] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  156.204388][ T6346] BTRFS info (device loop0): force clearing of disk cache
[  156.211483][ T6346] BTRFS info (device loop0): setting nodatasum
[  156.217700][ T6346] BTRFS info (device loop0): allowing degraded mounts
[  156.224509][ T6346] BTRFS info (device loop0): enabling disk space caching
[  156.231526][ T6346] BTRFS info (device loop0): disk space caching is enabled
[  156.253241][ T6346] BTRFS info (device loop0): enabling ssd optimizations
[  156.260288][ T6346] BTRFS info (device loop0): auto enabling async discard
[  156.268392][ T6346] BTRFS info (device loop0): rebuilding free space tree
[  156.280895][ T6346] BTRFS info (device loop0): disabling free space tree
[  156.287885][ T6346] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  156.297547][ T6346] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  6346] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6346] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6346] chdir("./file0")            = 0
[pid  6346] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6346] close(4)                    = 0
[pid  6346] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6345] <... futex resumed>)        = 0
[pid  6345] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6345] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6346] open("./file0", O_RDONLY)   = 4
[pid  6346] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[  156.310614][ T6346] BTRFS info (device loop0): checking UUID tree
[pid  6346] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6345] <... futex resumed>)        = 0
[pid  6345] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6346] <... futex resumed>)        = 0
[pid  6345] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6346] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  6346] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6346] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6345] <... futex resumed>)        = 0
[pid  6345] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6346] <... futex resumed>)        = 0
[pid  6346] 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}} <unfinished ...>
[  156.411299][ T6346] BTRFS info (device loop0): balance: start -d -m
[  156.422824][ T6346] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  6345] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6345] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6345] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6345] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6345] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6345] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 6364 attached
 <unfinished ...>
[pid  6364] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  6345] <... clone3 resumed> => {parent_tid=[194]}, 88) = 194
[pid  6364] <... rseq resumed>)         = 0
[pid  6345] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6364] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  6345] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6364] <... set_robust_list resumed>) = 0
[pid  6345] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6364] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6345] <... futex resumed>)        = 0
[pid  6364] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6345] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6364] open("./file0", O_RDONLY)   = 5
[pid  6364] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6345] <... futex resumed>)        = 0
[pid  6364] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6345] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6364] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6345] <... futex resumed>)        = 0
[pid  6364] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  156.452416][ T6346] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6345] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6364] <... ioctl resumed>)        = 0
[pid  6364] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  156.595570][ T6346] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  156.620204][ T6346] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  6364] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6346] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6346] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6345] close(3)                    = 0
[pid  6345] close(4 <unfinished ...>
[pid  6346] <... futex resumed>)        = 0
[pid  6346] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6345] <... close resumed>)        = 0
[pid  6345] close(5)                    = 0
[pid  6345] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6345] close(7)                    = -1 EBADF (Bad file descriptor)
[  156.640142][ T6346] BTRFS info (device loop0): balance: ended with status: 0
[pid  6345] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6345] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6345] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6345] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6345] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6345] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6345] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6345] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6345] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6345] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6345] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6345] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6345] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6345] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6345] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6345] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6345] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6345] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6345] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6345] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6345] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6345] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6345] exit_group(0 <unfinished ...>
[pid  6346] <... futex resumed>)        = ?
[pid  6345] <... exit_group resumed>)   = ?
[pid  6346] +++ exited with 0 +++
[pid  6364] <... futex resumed>)        = ?
[pid  6364] +++ exited with 0 +++
[pid  6345] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=192, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=39 /* 0.39 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./63", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./63", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./63/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./63/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./63/binderfs")     = 0
[pid  5073] umount2("./63/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./63/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./63/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./63/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./63/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./63/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./63")               = 0
[pid  5073] mkdir("./64", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6365 attached
, child_tidptr=0x5555570a9690) = 195
[pid  6365] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6365] chdir("./64")               = 0
[pid  6365] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6365] setpgid(0, 0)               = 0
[pid  6365] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6365] write(3, "1000", 4)         = 4
[pid  6365] close(3)                    = 0
[pid  6365] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6365] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6365] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6365] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6365] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6365] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6366 attached
 <unfinished ...>
[pid  6366] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  6366] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6365] <... clone3 resumed> => {parent_tid=[196]}, 88) = 196
[pid  6366] <... set_robust_list resumed>) = 0
[pid  6365] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6366] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6365] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6366] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6365] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6366] memfd_create("syzkaller", 0 <unfinished ...>
[pid  6365] <... futex resumed>)        = 0
[pid  6365] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6366] <... memfd_create resumed>) = 3
[pid  6366] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6366] 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) = 16777216
[pid  6366] munmap(0x7f877d82c000, 138412032) = 0
[pid  6366] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6366] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6366] close(3)                    = 0
[pid  6366] mkdir("./file0", 0777)      = 0
[  157.269483][ T6366] loop0: detected capacity change from 0 to 32768
[  157.303086][ T6366] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6366)
[  157.319650][ T6366] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  157.328923][ T6366] BTRFS info (device loop0): force clearing of disk cache
[  157.336063][ T6366] BTRFS info (device loop0): setting nodatasum
[  157.342207][ T6366] BTRFS info (device loop0): allowing degraded mounts
[  157.349033][ T6366] BTRFS info (device loop0): enabling disk space caching
[  157.356074][ T6366] BTRFS info (device loop0): disk space caching is enabled
[  157.378097][ T6366] BTRFS info (device loop0): enabling ssd optimizations
[  157.385519][ T6366] BTRFS info (device loop0): auto enabling async discard
[  157.394089][ T6366] BTRFS info (device loop0): rebuilding free space tree
[  157.405831][ T6366] BTRFS info (device loop0): disabling free space tree
[  157.412707][ T6366] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  6366] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6366] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6366] chdir("./file0")            = 0
[pid  6366] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6366] close(4)                    = 0
[pid  6366] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6365] <... futex resumed>)        = 0
[pid  6365] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6366] open("./file0", O_RDONLY <unfinished ...>
[pid  6365] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6366] <... open resumed>)         = 4
[pid  6366] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6365] <... futex resumed>)        = 0
[pid  6366] <... futex resumed>)        = 1
[pid  6366] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  6365] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6366] <... ioctl resumed>)        = 0
[pid  6365] <... futex resumed>)        = 0
[pid  6366] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6366] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6365] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[  157.422386][ T6366] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  157.435350][ T6366] BTRFS info (device loop0): checking UUID tree
[pid  6365] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6365] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6366] <... futex resumed>)        = 0
[pid  6366] 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}} <unfinished ...>
[pid  6365] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  6365] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  157.508846][ T6366] BTRFS info (device loop0): balance: start -d -m
[  157.520845][ T6366] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  6365] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6365] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6365] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6365] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[197]}, 88) = 197
[pid  6365] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6365] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6365] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 6384 attached
 <unfinished ...>
[pid  6384] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6384] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6384] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6384] open("./file0", O_RDONLY)   = 5
[pid  6384] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6365] <... futex resumed>)        = 0
[pid  6384] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6365] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6384] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6365] <... futex resumed>)        = 0
[pid  6365] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[  157.549697][ T6366] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6384] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  6365] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  6384] <... ioctl resumed>)        = 0
[pid  6384] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6384] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6366] <... ioctl resumed>)        = -1 ENOSPC (No space left on device)
[pid  6366] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6366] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6365] close(3)                    = 0
[pid  6365] close(4)                    = 0
[pid  6365] close(5)                    = 0
[pid  6365] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6365] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6365] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6365] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6365] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6365] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6365] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6365] close(13)                   = -1 EBADF (Bad file descriptor)
[  157.711266][ T6366] BTRFS info (device loop0): 1 enospc errors during balance
[  157.719203][ T6366] BTRFS info (device loop0): balance: ended with status: -28
[pid  6365] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6365] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6365] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6365] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6365] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6365] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6365] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6365] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6365] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6365] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6365] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6365] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6365] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6365] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6365] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6365] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6365] exit_group(0 <unfinished ...>
[pid  6366] <... futex resumed>)        = ?
[pid  6365] <... exit_group resumed>)   = ?
[pid  6384] <... futex resumed>)        = ?
[pid  6366] +++ exited with 0 +++
[pid  6384] +++ exited with 0 +++
[pid  6365] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=195, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=34 /* 0.34 s */} ---
[pid  5073] umount2("./64", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./64", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./64/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./64/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./64/binderfs")     = 0
[pid  5073] umount2("./64/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./64/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./64/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./64/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./64/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./64/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./64")               = 0
[pid  5073] mkdir("./65", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6385 attached
, child_tidptr=0x5555570a9690) = 198
[pid  6385] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6385] chdir("./65")               = 0
[pid  6385] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6385] setpgid(0, 0)               = 0
[pid  6385] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6385] write(3, "1000", 4)         = 4
[pid  6385] close(3)                    = 0
[pid  6385] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6385] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6385] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6385] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6385] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6385] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6386 attached
 => {parent_tid=[199]}, 88) = 199
[pid  6386] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  6385] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6386] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6385] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6386] <... set_robust_list resumed>) = 0
[pid  6385] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6386] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6385] <... futex resumed>)        = 0
[pid  6386] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6385] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6386] memfd_create("syzkaller", 0) = 3
[pid  6386] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6386] 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) = 16777216
[pid  6386] munmap(0x7f877d82c000, 138412032) = 0
[pid  6386] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6386] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6386] close(3)                    = 0
[pid  6386] mkdir("./file0", 0777)      = 0
[  158.255265][ T6386] loop0: detected capacity change from 0 to 32768
[  158.280010][ T6386] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6386)
[  158.295333][ T6386] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  158.304593][ T6386] BTRFS info (device loop0): force clearing of disk cache
[  158.311689][ T6386] BTRFS info (device loop0): setting nodatasum
[  158.317871][ T6386] BTRFS info (device loop0): allowing degraded mounts
[  158.324657][ T6386] BTRFS info (device loop0): enabling disk space caching
[  158.331667][ T6386] BTRFS info (device loop0): disk space caching is enabled
[  158.354089][ T6386] BTRFS info (device loop0): enabling ssd optimizations
[  158.361039][ T6386] BTRFS info (device loop0): auto enabling async discard
[  158.369049][ T6386] BTRFS info (device loop0): rebuilding free space tree
[  158.380673][ T6386] BTRFS info (device loop0): disabling free space tree
[  158.387683][ T6386] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  6386] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6386] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6386] chdir("./file0")            = 0
[pid  6386] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6386] close(4)                    = 0
[pid  6386] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6385] <... futex resumed>)        = 0
[pid  6385] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6385] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6386] open("./file0", O_RDONLY)   = 4
[pid  6386] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6385] <... futex resumed>)        = 0
[pid  6386] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  6385] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6386] <... ioctl resumed>)        = 0
[pid  6385] <... futex resumed>)        = 0
[pid  6386] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6385] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6386] <... futex resumed>)        = 0
[pid  6385] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6386] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6385] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6385] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6386] <... futex resumed>)        = 0
[  158.397393][ T6386] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  158.412613][ T6386] BTRFS info (device loop0): checking UUID tree
[pid  6386] 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}} <unfinished ...>
[pid  6385] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  6385] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6385] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6385] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6385] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6385] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[200]}, 88) = 200
./strace-static-x86_64: Process 6404 attached
[pid  6385] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6404] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6404] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6404] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6385] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6385] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6404] open("./file0", O_RDONLY <unfinished ...>
[pid  6385] <... futex resumed>)        = 0
[pid  6404] <... open resumed>)         = 5
[pid  6385] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6404] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6404] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6385] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6385] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6404] <... futex resumed>)        = 0
[pid  6385] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[  158.465247][ T6386] BTRFS info (device loop0): balance: start -d -m
[  158.474488][ T6386] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  158.497724][ T6386] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6404] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  6385] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[  158.556730][ T6386] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  6404] <... ioctl resumed>)        = 0
[pid  6404] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6404] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6386] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6386] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6385] close(3)                    = 0
[pid  6385] close(4)                    = 0
[pid  6385] close(5 <unfinished ...>
[pid  6386] <... futex resumed>)        = 0
[pid  6386] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6385] <... close resumed>)        = 0
[pid  6385] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6385] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6385] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6385] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6385] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6385] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6385] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6385] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6385] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6385] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6385] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6385] close(17)                   = -1 EBADF (Bad file descriptor)
[  158.692133][ T6386] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  158.711341][ T6386] BTRFS info (device loop0): balance: ended with status: 0
[pid  6385] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6385] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6385] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6385] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6385] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6385] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6385] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6385] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6385] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6385] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6385] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6385] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6385] exit_group(0 <unfinished ...>
[pid  6404] <... futex resumed>)        = ?
[pid  6386] <... futex resumed>)        = ?
[pid  6385] <... exit_group resumed>)   = ?
[pid  6404] +++ exited with 0 +++
[pid  6386] +++ exited with 0 +++
[pid  6385] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=198, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=36 /* 0.36 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./65", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./65", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./65/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./65/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./65/binderfs")     = 0
[pid  5073] umount2("./65/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./65/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./65/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./65/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./65/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./65/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./65")               = 0
[pid  5073] mkdir("./66", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6405 attached
 <unfinished ...>
[pid  6405] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6405] chdir("./66")               = 0
[pid  6405] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6405] setpgid(0, 0 <unfinished ...>
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 201
[pid  6405] <... setpgid resumed>)      = 0
[pid  6405] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6405] write(3, "1000", 4)         = 4
[pid  6405] close(3)                    = 0
[pid  6405] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6405] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6405] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6405] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6405] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6405] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6406 attached
 <unfinished ...>
[pid  6406] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  6405] <... clone3 resumed> => {parent_tid=[202]}, 88) = 202
[pid  6406] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6405] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6406] <... set_robust_list resumed>) = 0
[pid  6405] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6406] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6405] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6406] memfd_create("syzkaller", 0 <unfinished ...>
[pid  6405] <... futex resumed>)        = 0
[pid  6405] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6406] <... memfd_create resumed>) = 3
[pid  6406] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6406] 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) = 16777216
[pid  6406] munmap(0x7f877d82c000, 138412032) = 0
[pid  6406] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6406] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6406] close(3)                    = 0
[pid  6406] mkdir("./file0", 0777)      = 0
[  159.312758][ T6406] loop0: detected capacity change from 0 to 32768
[  159.325892][ T6406] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6406)
[  159.342487][ T6406] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  159.351846][ T6406] BTRFS info (device loop0): force clearing of disk cache
[  159.358990][ T6406] BTRFS info (device loop0): setting nodatasum
[  159.365175][ T6406] BTRFS info (device loop0): allowing degraded mounts
[  159.371944][ T6406] BTRFS info (device loop0): enabling disk space caching
[  159.379011][ T6406] BTRFS info (device loop0): disk space caching is enabled
[  159.399634][ T6406] BTRFS info (device loop0): enabling ssd optimizations
[  159.406713][ T6406] BTRFS info (device loop0): auto enabling async discard
[  159.415226][ T6406] BTRFS info (device loop0): rebuilding free space tree
[  159.428237][ T6406] BTRFS info (device loop0): disabling free space tree
[  159.435497][ T6406] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  159.445704][ T6406] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  6406] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6406] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6406] chdir("./file0")            = 0
[pid  6406] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6406] close(4)                    = 0
[pid  6406] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[  159.459607][ T6406] BTRFS info (device loop0): checking UUID tree
[pid  6406] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6405] <... futex resumed>)        = 0
[pid  6405] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6406] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6405] <... futex resumed>)        = 0
[pid  6406] open("./file0", O_RDONLY <unfinished ...>
[pid  6405] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6406] <... open resumed>)         = 4
[pid  6406] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6405] <... futex resumed>)        = 0
[pid  6406] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6405] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6406] <... futex resumed>)        = 0
[pid  6406] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  6406] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6406] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6405] <... futex resumed>)        = 1
[pid  6405] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid  6405] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6406] <... futex resumed>)        = 0
[pid  6406] 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}} <unfinished ...>
[pid  6405] <... futex resumed>)        = 1
[pid  6405] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6405] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6405] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6405] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6405] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6405] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[203]}, 88) = 203
[pid  6405] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6405] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
./strace-static-x86_64: Process 6424 attached
[pid  6405] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6424] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6424] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6424] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6424] open("./file0", O_RDONLY)   = 5
[pid  6424] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[  159.584470][ T6406] BTRFS info (device loop0): balance: start -d -m
[  159.593355][ T6406] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  159.620812][ T6406] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6405] <... futex resumed>)        = 0
[pid  6424] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6405] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6424] <... futex resumed>)        = 0
[pid  6405] <... futex resumed>)        = 1
[pid  6405] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6424] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  6405] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  6424] <... ioctl resumed>)        = 0
[pid  6424] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  159.699995][ T6406] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  6424] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6406] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6406] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6406] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6405] close(3)                    = 0
[pid  6405] close(4)                    = 0
[pid  6405] close(5)                    = 0
[pid  6405] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6405] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6405] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6405] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6405] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6405] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6405] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6405] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6405] close(14)                   = -1 EBADF (Bad file descriptor)
[  159.763682][ T6406] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  159.783535][ T6406] BTRFS info (device loop0): balance: ended with status: 0
[pid  6405] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6405] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6405] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6405] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6405] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6405] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6405] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6405] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6405] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6405] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6405] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6405] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6405] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6405] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6405] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6405] exit_group(0)               = ?
[pid  6424] <... futex resumed>)        = ?
[pid  6406] <... futex resumed>)        = ?
[pid  6424] +++ exited with 0 +++
[pid  6406] +++ exited with 0 +++
[pid  6405] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=201, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=42 /* 0.42 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./66", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./66", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./66/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./66/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./66/binderfs")     = 0
[pid  5073] umount2("./66/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./66/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./66/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./66/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./66/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./66/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./66")               = 0
[pid  5073] mkdir("./67", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6425 attached
, child_tidptr=0x5555570a9690) = 204
[pid  6425] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6425] chdir("./67")               = 0
[pid  6425] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6425] setpgid(0, 0)               = 0
[pid  6425] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6425] write(3, "1000", 4)         = 4
[pid  6425] close(3)                    = 0
[pid  6425] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6425] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6425] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6425] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6425] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6425] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6426 attached
 <unfinished ...>
[pid  6426] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  6425] <... clone3 resumed> => {parent_tid=[205]}, 88) = 205
[pid  6426] <... rseq resumed>)         = 0
[pid  6425] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6426] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6425] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6426] <... set_robust_list resumed>) = 0
[pid  6425] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6426] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6425] <... futex resumed>)        = 0
[pid  6426] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6425] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6426] memfd_create("syzkaller", 0) = 3
[pid  6426] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6426] 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) = 16777216
[pid  6426] munmap(0x7f877d82c000, 138412032) = 0
[pid  6426] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6426] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6426] close(3)                    = 0
[pid  6426] mkdir("./file0", 0777)      = 0
[  160.420756][ T6426] loop0: detected capacity change from 0 to 32768
[  160.435604][ T6426] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6426)
[  160.452373][ T6426] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  160.461667][ T6426] BTRFS info (device loop0): force clearing of disk cache
[  160.468852][ T6426] BTRFS info (device loop0): setting nodatasum
[  160.475054][ T6426] BTRFS info (device loop0): allowing degraded mounts
[  160.481824][ T6426] BTRFS info (device loop0): enabling disk space caching
[  160.488916][ T6426] BTRFS info (device loop0): disk space caching is enabled
[  160.510101][ T6426] BTRFS info (device loop0): enabling ssd optimizations
[  160.517163][ T6426] BTRFS info (device loop0): auto enabling async discard
[  160.525210][ T6426] BTRFS info (device loop0): rebuilding free space tree
[  160.537269][ T6426] BTRFS info (device loop0): disabling free space tree
[  160.544272][ T6426] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  160.553964][ T6426] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  6426] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6426] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6426] chdir("./file0")            = 0
[pid  6426] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6426] close(4)                    = 0
[pid  6426] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6425] <... futex resumed>)        = 0
[  160.567141][ T6426] BTRFS info (device loop0): checking UUID tree
[pid  6425] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6426] open("./file0", O_RDONLY <unfinished ...>
[pid  6425] <... futex resumed>)        = 0
[pid  6426] <... open resumed>)         = 4
[pid  6425] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6426] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6425] <... futex resumed>)        = 0
[pid  6425] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6425] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6426] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  6426] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6425] <... futex resumed>)        = 0
[pid  6426] <... futex resumed>)        = 1
[pid  6425] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6426] 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}} <unfinished ...>
[pid  6425] <... futex resumed>)        = 0
[pid  6425] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6425] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6425] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6425] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6425] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6425] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[206]}, 88) = 206
[pid  6425] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
./strace-static-x86_64: Process 6444 attached
[pid  6444] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  6425] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6425] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6444] <... rseq resumed>)         = 0
[pid  6444] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6444] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6444] open("./file0", O_RDONLY)   = 5
[pid  6444] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6425] <... futex resumed>)        = 0
[pid  6444] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[  160.645250][ T6426] BTRFS info (device loop0): balance: start -d -m
[  160.655825][ T6426] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  160.681295][ T6426] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6425] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6444] <... futex resumed>)        = 0
[pid  6425] <... futex resumed>)        = 1
[pid  6444] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  6425] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[  160.779498][ T6426] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  6444] <... ioctl resumed>)        = 0
[pid  6444] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6444] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6426] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6426] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6426] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6425] close(3)                    = 0
[pid  6425] close(4)                    = 0
[pid  6425] close(5)                    = 0
[pid  6425] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6425] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6425] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6425] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6425] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6425] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6425] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6425] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6425] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6425] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6425] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6425] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6425] close(18)                   = -1 EBADF (Bad file descriptor)
[  160.862192][ T6426] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  160.882121][ T6426] BTRFS info (device loop0): balance: ended with status: 0
[pid  6425] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6425] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6425] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6425] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6425] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6425] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6425] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6425] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6425] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6425] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6425] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6425] exit_group(0)               = ?
[pid  6444] <... futex resumed>)        = ?
[pid  6426] <... futex resumed>)        = ?
[pid  6444] +++ exited with 0 +++
[pid  6426] +++ exited with 0 +++
[pid  6425] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=204, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=41 /* 0.41 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./67", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./67", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./67/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./67/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./67/binderfs")     = 0
[pid  5073] umount2("./67/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./67/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./67/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./67/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./67/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./67/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./67")               = 0
[pid  5073] mkdir("./68", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6445 attached
, child_tidptr=0x5555570a9690) = 207
[pid  6445] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6445] chdir("./68")               = 0
[pid  6445] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6445] setpgid(0, 0)               = 0
[pid  6445] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6445] write(3, "1000", 4)         = 4
[pid  6445] close(3)                    = 0
[pid  6445] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6445] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6445] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6445] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6445] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6445] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6446 attached
 => {parent_tid=[208]}, 88) = 208
[pid  6446] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  6445] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6446] <... rseq resumed>)         = 0
[pid  6445] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6446] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6445] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6446] <... set_robust_list resumed>) = 0
[pid  6445] <... futex resumed>)        = 0
[pid  6446] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6445] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6446] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6446] memfd_create("syzkaller", 0) = 3
[pid  6446] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6446] 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) = 16777216
[pid  6446] munmap(0x7f877d82c000, 138412032) = 0
[pid  6446] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6446] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6446] close(3)                    = 0
[pid  6446] mkdir("./file0", 0777)      = 0
[  161.483296][ T6446] loop0: detected capacity change from 0 to 32768
[  161.498901][ T6446] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6446)
[  161.514987][ T6446] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  161.524459][ T6446] BTRFS info (device loop0): force clearing of disk cache
[  161.531771][ T6446] BTRFS info (device loop0): setting nodatasum
[  161.538295][ T6446] BTRFS info (device loop0): allowing degraded mounts
[  161.545379][ T6446] BTRFS info (device loop0): enabling disk space caching
[  161.552411][ T6446] BTRFS info (device loop0): disk space caching is enabled
[  161.573680][ T6446] BTRFS info (device loop0): enabling ssd optimizations
[  161.580670][ T6446] BTRFS info (device loop0): auto enabling async discard
[  161.589541][ T6446] BTRFS info (device loop0): rebuilding free space tree
[  161.603064][ T6446] BTRFS info (device loop0): disabling free space tree
[  161.610287][ T6446] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  161.620280][ T6446] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  6446] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6446] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6446] chdir("./file0")            = 0
[pid  6446] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6446] close(4)                    = 0
[pid  6446] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[  161.633579][ T6446] BTRFS info (device loop0): checking UUID tree
[pid  6446] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6445] <... futex resumed>)        = 0
[pid  6445] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6446] <... futex resumed>)        = 0
[pid  6445] <... futex resumed>)        = 1
[pid  6445] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6446] open("./file0", O_RDONLY)   = 4
[pid  6446] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6445] <... futex resumed>)        = 0
[pid  6445] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6445] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6446] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  6446] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6445] <... futex resumed>)        = 0
[pid  6446] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6445] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6446] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6445] <... futex resumed>)        = 0
[pid  6445] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6446] 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}} <unfinished ...>
[pid  6445] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  6445] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6445] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6445] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6445] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6445] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[209]}, 88) = 209
[pid  6445] rt_sigprocmask(SIG_SETMASK, [], ./strace-static-x86_64: Process 6464 attached
NULL, 8) = 0
[pid  6464] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6445] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6445] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6464] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6464] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6464] open("./file0", O_RDONLY)   = 5
[pid  6464] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6445] <... futex resumed>)        = 0
[pid  6464] <... futex resumed>)        = 1
[pid  6445] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6464] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  6445] <... futex resumed>)        = 0
[  161.725305][ T6446] BTRFS info (device loop0): balance: start -d -m
[  161.733342][ T6446] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  161.764320][ T6446] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6445] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6445] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  6464] <... ioctl resumed>)        = 0
[pid  6464] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6464] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6446] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6446] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6445] close(3)                    = 0
[pid  6446] <... futex resumed>)        = 0
[pid  6445] close(4)                    = 0
[pid  6445] close(5)                    = 0
[pid  6445] close(6 <unfinished ...>
[pid  6446] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6445] <... close resumed>)        = -1 EBADF (Bad file descriptor)
[pid  6445] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6445] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6445] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6445] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6445] close(11)                   = -1 EBADF (Bad file descriptor)
[  161.919157][ T6446] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  161.942777][ T6446] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  161.961938][ T6446] BTRFS info (device loop0): balance: ended with status: 0
[pid  6445] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6445] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6445] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6445] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6445] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6445] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6445] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6445] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6445] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6445] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6445] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6445] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6445] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6445] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6445] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6445] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6445] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6445] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6445] exit_group(0 <unfinished ...>
[pid  6464] <... futex resumed>)        = ?
[pid  6464] +++ exited with 0 +++
[pid  6446] <... futex resumed>)        = ?
[pid  6445] <... exit_group resumed>)   = ?
[pid  6446] +++ exited with 0 +++
[pid  6445] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=207, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=38 /* 0.38 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./68", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./68", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./68/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./68/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./68/binderfs")     = 0
[pid  5073] umount2("./68/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./68/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./68/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./68/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./68/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./68/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./68")               = 0
[pid  5073] mkdir("./69", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6465 attached
 <unfinished ...>
[pid  6465] set_robust_list(0x5555570a96a0, 24 <unfinished ...>
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 210
[pid  6465] <... set_robust_list resumed>) = 0
[pid  6465] chdir("./69")               = 0
[pid  6465] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6465] setpgid(0, 0)               = 0
[pid  6465] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6465] write(3, "1000", 4)         = 4
[pid  6465] close(3)                    = 0
[pid  6465] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6465] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6465] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6465] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6465] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6465] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6466 attached
 <unfinished ...>
[pid  6466] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  6465] <... clone3 resumed> => {parent_tid=[211]}, 88) = 211
[pid  6466] <... rseq resumed>)         = 0
[pid  6465] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6466] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6465] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6466] <... set_robust_list resumed>) = 0
[pid  6465] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6466] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6465] <... futex resumed>)        = 0
[pid  6466] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6465] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6466] memfd_create("syzkaller", 0) = 3
[pid  6466] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6466] 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) = 16777216
[pid  6466] munmap(0x7f877d82c000, 138412032) = 0
[pid  6466] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6466] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6466] close(3)                    = 0
[pid  6466] mkdir("./file0", 0777)      = 0
[  162.625165][ T6466] loop0: detected capacity change from 0 to 32768
[  162.642052][ T6466] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6466)
[  162.658137][ T6466] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  162.667592][ T6466] BTRFS info (device loop0): force clearing of disk cache
[  162.674764][ T6466] BTRFS info (device loop0): setting nodatasum
[  162.680933][ T6466] BTRFS info (device loop0): allowing degraded mounts
[  162.687742][ T6466] BTRFS info (device loop0): enabling disk space caching
[  162.694786][ T6466] BTRFS info (device loop0): disk space caching is enabled
[  162.716920][ T6466] BTRFS info (device loop0): enabling ssd optimizations
[  162.723912][ T6466] BTRFS info (device loop0): auto enabling async discard
[  162.731719][ T6466] BTRFS info (device loop0): rebuilding free space tree
[  162.744289][ T6466] BTRFS info (device loop0): disabling free space tree
[  162.751179][ T6466] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  162.760851][ T6466] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  6466] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6466] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6466] chdir("./file0")            = 0
[pid  6466] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6466] close(4)                    = 0
[pid  6466] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6466] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6465] <... futex resumed>)        = 0
[pid  6465] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6466] <... futex resumed>)        = 0
[pid  6465] <... futex resumed>)        = 1
[pid  6466] open("./file0", O_RDONLY <unfinished ...>
[pid  6465] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6466] <... open resumed>)         = 4
[pid  6466] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6465] <... futex resumed>)        = 0
[pid  6466] <... futex resumed>)        = 1
[pid  6465] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6466] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  6465] <... futex resumed>)        = 0
[pid  6466] <... ioctl resumed>)        = 0
[  162.774321][ T6466] BTRFS info (device loop0): checking UUID tree
[pid  6465] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6466] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6465] <... futex resumed>)        = 0
[pid  6466] <... futex resumed>)        = 1
[pid  6465] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6466] 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}} <unfinished ...>
[pid  6465] <... futex resumed>)        = 0
[pid  6465] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6465] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  6465] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6465] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6465] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6465] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6465] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 6484 attached
 => {parent_tid=[212]}, 88) = 212
[pid  6484] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6465] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6465] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6465] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6484] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6484] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6484] open("./file0", O_RDONLY)   = 5
[pid  6484] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6465] <... futex resumed>)        = 0
[pid  6465] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6465] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[  162.822691][ T6466] BTRFS info (device loop0): balance: start -d -m
[  162.833576][ T6466] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  162.859065][ T6466] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6484] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  6465] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[  162.972656][ T6466] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  6484] <... ioctl resumed>)        = 0
[pid  6484] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6484] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6466] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6466] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6466] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6465] close(3)                    = 0
[pid  6465] close(4)                    = 0
[pid  6465] close(5)                    = 0
[pid  6465] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6465] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6465] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6465] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6465] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6465] close(11)                   = -1 EBADF (Bad file descriptor)
[  163.054406][ T6466] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  163.074234][ T6466] BTRFS info (device loop0): balance: ended with status: 0
[pid  6465] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6465] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6465] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6465] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6465] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6465] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6465] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6465] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6465] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6465] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6465] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6465] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6465] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6465] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6465] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6465] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6465] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6465] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6465] exit_group(0 <unfinished ...>
[pid  6484] <... futex resumed>)        = ?
[pid  6484] +++ exited with 0 +++
[pid  6466] <... futex resumed>)        = ?
[pid  6465] <... exit_group resumed>)   = ?
[pid  6466] +++ exited with 0 +++
[pid  6465] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=210, si_uid=0, si_status=0, si_utime=0, si_stime=45 /* 0.45 s */} ---
[pid  5073] umount2("./69", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./69", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./69/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./69/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./69/binderfs")     = 0
[pid  5073] umount2("./69/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./69/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./69/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./69/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./69/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./69/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./69")               = 0
[pid  5073] mkdir("./70", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6485 attached
, child_tidptr=0x5555570a9690) = 213
[pid  6485] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6485] chdir("./70")               = 0
[pid  6485] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6485] setpgid(0, 0)               = 0
[pid  6485] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6485] write(3, "1000", 4)         = 4
[pid  6485] close(3)                    = 0
[pid  6485] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6485] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6485] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6485] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6485] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6485] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6486 attached
 <unfinished ...>
[pid  6486] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  6485] <... clone3 resumed> => {parent_tid=[214]}, 88) = 214
[pid  6486] <... rseq resumed>)         = 0
[pid  6486] set_robust_list(0x7f8785c4c9a0, 24) = 0
[pid  6486] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6485] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6486] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6485] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6485] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6486] <... futex resumed>)        = 0
[pid  6485] <... futex resumed>)        = 1
[pid  6485] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6486] memfd_create("syzkaller", 0) = 3
[pid  6486] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6486] 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) = 16777216
[pid  6486] munmap(0x7f877d82c000, 138412032) = 0
[pid  6486] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6486] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6486] close(3)                    = 0
[pid  6486] mkdir("./file0", 0777)      = 0
[  163.590659][ T6486] loop0: detected capacity change from 0 to 32768
[  163.610156][ T6486] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6486)
[  163.626891][ T6486] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  163.636201][ T6486] BTRFS info (device loop0): force clearing of disk cache
[  163.643298][ T6486] BTRFS info (device loop0): setting nodatasum
[  163.649503][ T6486] BTRFS info (device loop0): allowing degraded mounts
[  163.656316][ T6486] BTRFS info (device loop0): enabling disk space caching
[  163.663331][ T6486] BTRFS info (device loop0): disk space caching is enabled
[  163.684697][ T6486] BTRFS info (device loop0): enabling ssd optimizations
[  163.691648][ T6486] BTRFS info (device loop0): auto enabling async discard
[  163.699934][ T6486] BTRFS info (device loop0): rebuilding free space tree
[  163.711462][ T6486] BTRFS info (device loop0): disabling free space tree
[  163.718479][ T6486] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  163.728575][ T6486] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  6486] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6486] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6486] chdir("./file0")            = 0
[pid  6486] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6486] close(4)                    = 0
[pid  6486] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6485] <... futex resumed>)        = 0
[pid  6485] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6486] <... futex resumed>)        = 1
[pid  6485] <... futex resumed>)        = 0
[pid  6486] open("./file0", O_RDONLY <unfinished ...>
[pid  6485] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6486] <... open resumed>)         = 4
[  163.742206][ T6486] BTRFS info (device loop0): checking UUID tree
[pid  6486] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6485] <... futex resumed>)        = 0
[pid  6485] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6486] <... futex resumed>)        = 1
[pid  6485] <... futex resumed>)        = 0
[pid  6486] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  6485] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6486] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6485] <... futex resumed>)        = 0
[pid  6485] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6486] <... futex resumed>)        = 1
[pid  6486] 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}} <unfinished ...>
[pid  6485] <... futex resumed>)        = 0
[pid  6485] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6485] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6485] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6485] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6485] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6485] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[215]}, 88) = 215
[pid  6485] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6485] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6485] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 6504 attached
 <unfinished ...>
[pid  6504] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6504] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6504] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6504] open("./file0", O_RDONLY)   = 5
[pid  6504] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6485] <... futex resumed>)        = 0
[pid  6504] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6485] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6504] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6504] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  6485] <... futex resumed>)        = 0
[  163.817218][ T6486] BTRFS info (device loop0): balance: start -d -m
[  163.826177][ T6486] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  163.851328][ T6486] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6485] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6504] <... ioctl resumed>)        = 0
[pid  6504] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  164.027295][ T6486] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  164.051655][ T6486] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  6504] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6486] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6486] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6486] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6485] close(3)                    = 0
[pid  6485] close(4)                    = 0
[pid  6485] close(5)                    = 0
[  164.071374][ T6486] BTRFS info (device loop0): balance: ended with status: 0
[pid  6485] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6485] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6485] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6485] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6485] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6485] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6485] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6485] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6485] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6485] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6485] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6485] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6485] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6485] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6485] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6485] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6485] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6485] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6485] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6485] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6485] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6485] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6485] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6485] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6485] exit_group(0 <unfinished ...>
[pid  6504] <... futex resumed>)        = ?
[pid  6504] +++ exited with 0 +++
[pid  6486] <... futex resumed>)        = ?
[pid  6485] <... exit_group resumed>)   = ?
[pid  6486] +++ exited with 0 +++
[pid  6485] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=213, si_uid=0, si_status=0, si_utime=0, si_stime=43 /* 0.43 s */} ---
[pid  5073] umount2("./70", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./70", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./70/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./70/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./70/binderfs")     = 0
[pid  5073] umount2("./70/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./70/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./70/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./70/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./70/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./70/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./70")               = 0
[pid  5073] mkdir("./71", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6505 attached
 <unfinished ...>
[pid  6505] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 216
[pid  6505] chdir("./71")               = 0
[pid  6505] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6505] setpgid(0, 0)               = 0
[pid  6505] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6505] write(3, "1000", 4)         = 4
[pid  6505] close(3)                    = 0
[pid  6505] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6505] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6505] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6505] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6505] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6505] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6506 attached
 <unfinished ...>
[pid  6506] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  6505] <... clone3 resumed> => {parent_tid=[217]}, 88) = 217
[pid  6506] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6505] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6506] <... set_robust_list resumed>) = 0
[pid  6505] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6506] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6505] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6506] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6505] <... futex resumed>)        = 0
[pid  6506] memfd_create("syzkaller", 0 <unfinished ...>
[pid  6505] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6506] <... memfd_create resumed>) = 3
[pid  6506] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6506] 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) = 16777216
[pid  6506] munmap(0x7f877d82c000, 138412032) = 0
[pid  6506] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6506] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6506] close(3)                    = 0
[pid  6506] mkdir("./file0", 0777)      = 0
[  164.734651][ T6506] loop0: detected capacity change from 0 to 32768
[  164.754181][ T6506] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6506)
[  164.771268][ T6506] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  164.780540][ T6506] BTRFS info (device loop0): force clearing of disk cache
[  164.787690][ T6506] BTRFS info (device loop0): setting nodatasum
[  164.793842][ T6506] BTRFS info (device loop0): allowing degraded mounts
[  164.800715][ T6506] BTRFS info (device loop0): enabling disk space caching
[  164.808066][ T6506] BTRFS info (device loop0): disk space caching is enabled
[  164.829889][ T6506] BTRFS info (device loop0): enabling ssd optimizations
[  164.836888][ T6506] BTRFS info (device loop0): auto enabling async discard
[  164.845340][ T6506] BTRFS info (device loop0): rebuilding free space tree
[  164.858669][ T6506] BTRFS info (device loop0): disabling free space tree
[  164.865793][ T6506] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  6506] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6506] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6506] chdir("./file0")            = 0
[pid  6506] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6506] close(4)                    = 0
[pid  6506] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6505] <... futex resumed>)        = 0
[pid  6505] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6506] open("./file0", O_RDONLY <unfinished ...>
[  164.875525][ T6506] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  164.888679][ T6506] BTRFS info (device loop0): checking UUID tree
[pid  6505] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6506] <... open resumed>)         = 4
[pid  6506] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6506] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6505] <... futex resumed>)        = 0
[pid  6505] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6506] <... futex resumed>)        = 0
[pid  6506] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  6505] <... futex resumed>)        = 1
[pid  6505] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6506] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6505] <... futex resumed>)        = 0
[pid  6506] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6505] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6506] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6506] 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}} <unfinished ...>
[pid  6505] <... futex resumed>)        = 0
[pid  6505] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6505] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6505] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6505] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6505] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6505] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[218]}, 88) = 218
[pid  6505] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6505] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6505] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 6524 attached
 <unfinished ...>
[pid  6524] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6524] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6524] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6524] open("./file0", O_RDONLY)   = 5
[pid  6524] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6505] <... futex resumed>)        = 0
[pid  6524] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6505] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6524] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6505] <... futex resumed>)        = 0
[pid  6524] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  164.977853][ T6506] BTRFS info (device loop0): balance: start -d -m
[  164.986473][ T6506] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  165.017502][ T6506] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6505] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6505] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  6524] <... ioctl resumed>)        = 0
[pid  6524] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  165.152468][ T6506] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  165.176801][ T6506] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  6524] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6506] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6506] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6506] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6505] close(3)                    = 0
[pid  6505] close(4)                    = 0
[pid  6505] close(5)                    = 0
[pid  6505] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6505] close(7)                    = -1 EBADF (Bad file descriptor)
[  165.196382][ T6506] BTRFS info (device loop0): balance: ended with status: 0
[pid  6505] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6505] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6505] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6505] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6505] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6505] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6505] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6505] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6505] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6505] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6505] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6505] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6505] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6505] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6505] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6505] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6505] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6505] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6505] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6505] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6505] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6505] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6505] exit_group(0 <unfinished ...>
[pid  6524] <... futex resumed>)        = ?
[pid  6506] <... futex resumed>)        = ?
[pid  6505] <... exit_group resumed>)   = ?
[pid  6524] +++ exited with 0 +++
[pid  6506] +++ exited with 0 +++
[pid  6505] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=216, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=40 /* 0.40 s */} ---
[pid  5073] umount2("./71", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./71", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./71/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./71/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./71/binderfs")     = 0
[pid  5073] umount2("./71/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./71/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./71/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./71/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./71/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./71/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./71")               = 0
[pid  5073] mkdir("./72", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6525 attached
, child_tidptr=0x5555570a9690) = 219
[pid  6525] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6525] chdir("./72")               = 0
[pid  6525] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6525] setpgid(0, 0)               = 0
[pid  6525] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6525] write(3, "1000", 4)         = 4
[pid  6525] close(3)                    = 0
[pid  6525] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6525] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6525] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6525] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6525] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6525] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6526 attached
 <unfinished ...>
[pid  6526] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  6526] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6525] <... clone3 resumed> => {parent_tid=[220]}, 88) = 220
[pid  6526] <... set_robust_list resumed>) = 0
[pid  6526] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6525] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6526] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6525] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6526] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6525] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6526] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6525] <... futex resumed>)        = 0
[pid  6526] memfd_create("syzkaller", 0 <unfinished ...>
[pid  6525] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6526] <... memfd_create resumed>) = 3
[pid  6526] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6526] 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) = 16777216
[pid  6526] munmap(0x7f877d82c000, 138412032) = 0
[pid  6526] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6526] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6526] close(3)                    = 0
[pid  6526] mkdir("./file0", 0777)      = 0
[  165.868281][ T6526] loop0: detected capacity change from 0 to 32768
[  165.881913][ T6526] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6526)
[  165.898524][ T6526] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  165.907830][ T6526] BTRFS info (device loop0): force clearing of disk cache
[  165.914968][ T6526] BTRFS info (device loop0): setting nodatasum
[  165.921115][ T6526] BTRFS info (device loop0): allowing degraded mounts
[  165.927903][ T6526] BTRFS info (device loop0): enabling disk space caching
[  165.934949][ T6526] BTRFS info (device loop0): disk space caching is enabled
[  165.956755][ T6526] BTRFS info (device loop0): enabling ssd optimizations
[  165.963949][ T6526] BTRFS info (device loop0): auto enabling async discard
[  165.971813][ T6526] BTRFS info (device loop0): rebuilding free space tree
[  165.983808][ T6526] BTRFS info (device loop0): disabling free space tree
[  165.990752][ T6526] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  166.000417][ T6526] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  6526] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6526] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6526] chdir("./file0")            = 0
[pid  6526] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6526] close(4)                    = 0
[pid  6526] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6525] <... futex resumed>)        = 0
[pid  6526] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6525] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6526] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6525] <... futex resumed>)        = 0
[pid  6526] open("./file0", O_RDONLY)   = 4
[  166.013483][ T6526] BTRFS info (device loop0): checking UUID tree
[pid  6525] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6526] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6526] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6525] <... futex resumed>)        = 0
[pid  6525] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6526] <... futex resumed>)        = 0
[pid  6525] <... futex resumed>)        = 1
[pid  6526] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  6525] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6526] <... ioctl resumed>)        = 0
[pid  6526] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6525] <... futex resumed>)        = 0
[pid  6526] 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}} <unfinished ...>
[pid  6525] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  166.079442][ T6526] BTRFS info (device loop0): balance: start -d -m
[  166.090441][ T6526] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  6525] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6525] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6525] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6525] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6525] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6525] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[221]}, 88) = 221
[pid  6525] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6525] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6525] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 6544 attached
 <unfinished ...>
[pid  6544] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6544] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6544] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6544] open("./file0", O_RDONLY)   = 5
[pid  6544] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6544] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6525] <... futex resumed>)        = 0
[pid  6544] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6525] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6544] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  6525] <... futex resumed>)        = 0
[  166.120508][ T6526] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6525] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6544] <... ioctl resumed>)        = 0
[pid  6544] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  166.280241][ T6526] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  166.310043][ T6526] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  6544] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6526] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6526] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6526] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6525] close(3)                    = 0
[pid  6525] close(4)                    = 0
[pid  6525] close(5)                    = 0
[pid  6525] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6525] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6525] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6525] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6525] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6525] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6525] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6525] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6525] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6525] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6525] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6525] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6525] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6525] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6525] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6525] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6525] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6525] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6525] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6525] close(25)                   = -1 EBADF (Bad file descriptor)
[  166.332258][ T6526] BTRFS info (device loop0): balance: ended with status: 0
[pid  6525] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6525] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6525] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6525] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6525] exit_group(0 <unfinished ...>
[pid  6544] <... futex resumed>)        = ?
[pid  6544] +++ exited with 0 +++
[pid  6526] <... futex resumed>)        = ?
[pid  6525] <... exit_group resumed>)   = ?
[pid  6526] +++ exited with 0 +++
[pid  6525] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=219, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=42 /* 0.42 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./72", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./72", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./72/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./72/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./72/binderfs")     = 0
[pid  5073] umount2("./72/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./72/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./72/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./72/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./72/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./72/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./72")               = 0
[pid  5073] mkdir("./73", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6545 attached
, child_tidptr=0x5555570a9690) = 222
[pid  6545] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6545] chdir("./73")               = 0
[pid  6545] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6545] setpgid(0, 0)               = 0
[pid  6545] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6545] write(3, "1000", 4)         = 4
[pid  6545] close(3)                    = 0
[pid  6545] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6545] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6545] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6545] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6545] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6545] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6546 attached
 <unfinished ...>
[pid  6546] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  6545] <... clone3 resumed> => {parent_tid=[223]}, 88) = 223
[pid  6546] <... rseq resumed>)         = 0
[pid  6545] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6546] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6545] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6546] <... set_robust_list resumed>) = 0
[pid  6545] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6546] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6545] <... futex resumed>)        = 0
[pid  6546] memfd_create("syzkaller", 0 <unfinished ...>
[pid  6545] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6546] <... memfd_create resumed>) = 3
[pid  6546] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6546] 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) = 16777216
[pid  6546] munmap(0x7f877d82c000, 138412032) = 0
[pid  6546] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6546] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6546] close(3)                    = 0
[pid  6546] mkdir("./file0", 0777)      = 0
[  166.859773][ T6546] loop0: detected capacity change from 0 to 32768
[  166.875849][ T6546] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6546)
[  166.891376][ T6546] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  166.900668][ T6546] BTRFS info (device loop0): force clearing of disk cache
[  166.907802][ T6546] BTRFS info (device loop0): setting nodatasum
[  166.914005][ T6546] BTRFS info (device loop0): allowing degraded mounts
[  166.920774][ T6546] BTRFS info (device loop0): enabling disk space caching
[  166.927878][ T6546] BTRFS info (device loop0): disk space caching is enabled
[  166.949085][ T6546] BTRFS info (device loop0): enabling ssd optimizations
[  166.956048][ T6546] BTRFS info (device loop0): auto enabling async discard
[  166.963743][ T6546] BTRFS info (device loop0): rebuilding free space tree
[  166.975683][ T6546] BTRFS info (device loop0): disabling free space tree
[  166.982568][ T6546] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  166.992523][ T6546] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  6546] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6546] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6546] chdir("./file0")            = 0
[pid  6546] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6546] close(4)                    = 0
[pid  6546] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6545] <... futex resumed>)        = 0
[pid  6545] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6546] <... futex resumed>)        = 1
[pid  6545] <... futex resumed>)        = 0
[pid  6545] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6546] open("./file0", O_RDONLY)   = 4
[  167.006278][ T6546] BTRFS info (device loop0): checking UUID tree
[pid  6546] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6545] <... futex resumed>)        = 0
[pid  6545] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6546] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  6545] <... futex resumed>)        = 0
[pid  6545] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6546] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6545] <... futex resumed>)        = 0
[pid  6546] <... futex resumed>)        = 1
[pid  6545] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6546] 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}} <unfinished ...>
[pid  6545] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6545] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6545] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6545] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6545] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6545] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[224]}, 88) = 224
./strace-static-x86_64: Process 6564 attached
[pid  6564] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  6545] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6564] <... rseq resumed>)         = 0
[pid  6564] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  6545] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6564] <... set_robust_list resumed>) = 0
[pid  6545] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6564] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6545] <... futex resumed>)        = 0
[pid  6564] open("./file0", O_RDONLY <unfinished ...>
[pid  6545] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6564] <... open resumed>)         = 5
[pid  6564] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6564] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6545] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6545] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6564] <... futex resumed>)        = 0
[pid  6545] <... futex resumed>)        = 1
[pid  6564] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  167.068845][ T6546] BTRFS info (device loop0): balance: start -d -m
[  167.078798][ T6546] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  167.102906][ T6546] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6545] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6564] <... ioctl resumed>)        = 0
[pid  6564] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  167.272380][ T6546] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  167.296488][ T6546] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  6564] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6546] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6546] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6545] close(3 <unfinished ...>
[pid  6546] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6545] <... close resumed>)        = 0
[pid  6545] close(4)                    = 0
[pid  6545] close(5)                    = 0
[pid  6545] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6545] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6545] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6545] close(9)                    = -1 EBADF (Bad file descriptor)
[  167.315957][ T6546] BTRFS info (device loop0): balance: ended with status: 0
[pid  6545] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6545] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6545] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6545] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6545] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6545] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6545] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6545] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6545] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6545] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6545] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6545] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6545] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6545] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6545] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6545] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6545] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6545] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6545] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6545] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6545] exit_group(0 <unfinished ...>
[pid  6564] <... futex resumed>)        = ?
[pid  6546] <... futex resumed>)        = ?
[pid  6545] <... exit_group resumed>)   = ?
[pid  6564] +++ exited with 0 +++
[pid  6546] +++ exited with 0 +++
[pid  6545] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=222, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=43 /* 0.43 s */} ---
[pid  5073] umount2("./73", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./73", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./73/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./73/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./73/binderfs")     = 0
[pid  5073] umount2("./73/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./73/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./73/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./73/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./73/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./73/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./73")               = 0
[pid  5073] mkdir("./74", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6565 attached
, child_tidptr=0x5555570a9690) = 225
[pid  6565] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6565] chdir("./74")               = 0
[pid  6565] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6565] setpgid(0, 0)               = 0
[pid  6565] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6565] write(3, "1000", 4)         = 4
[pid  6565] close(3)                    = 0
[pid  6565] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6565] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6565] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6565] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6565] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6565] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6566 attached
 <unfinished ...>
[pid  6566] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  6566] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6565] <... clone3 resumed> => {parent_tid=[226]}, 88) = 226
[pid  6566] <... set_robust_list resumed>) = 0
[pid  6565] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6566] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6565] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6566] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6565] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6566] memfd_create("syzkaller", 0 <unfinished ...>
[pid  6565] <... futex resumed>)        = 0
[pid  6565] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6566] <... memfd_create resumed>) = 3
[pid  6566] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6566] 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) = 16777216
[pid  6566] munmap(0x7f877d82c000, 138412032) = 0
[pid  6566] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6566] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6566] close(3)                    = 0
[pid  6566] mkdir("./file0", 0777)      = 0
[  167.895466][ T6566] loop0: detected capacity change from 0 to 32768
[  167.910086][ T6566] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6566)
[  167.925970][ T6566] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  167.935251][ T6566] BTRFS info (device loop0): force clearing of disk cache
[  167.942347][ T6566] BTRFS info (device loop0): setting nodatasum
[  167.948550][ T6566] BTRFS info (device loop0): allowing degraded mounts
[  167.955351][ T6566] BTRFS info (device loop0): enabling disk space caching
[  167.962359][ T6566] BTRFS info (device loop0): disk space caching is enabled
[  167.985455][ T6566] BTRFS info (device loop0): enabling ssd optimizations
[  167.992412][ T6566] BTRFS info (device loop0): auto enabling async discard
[  168.000771][ T6566] BTRFS info (device loop0): rebuilding free space tree
[  168.012427][ T6566] BTRFS info (device loop0): disabling free space tree
[  168.019620][ T6566] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  168.029305][ T6566] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  6566] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6566] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6566] chdir("./file0")            = 0
[pid  6566] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6566] close(4)                    = 0
[pid  6566] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6565] <... futex resumed>)        = 0
[pid  6565] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6566] <... futex resumed>)        = 1
[pid  6565] <... futex resumed>)        = 0
[pid  6566] open("./file0", O_RDONLY <unfinished ...>
[pid  6565] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6566] <... open resumed>)         = 4
[pid  6566] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6565] <... futex resumed>)        = 0
[pid  6565] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6566] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  6565] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6566] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6565] <... futex resumed>)        = 0
[pid  6566] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6565] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6566] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6565] <... futex resumed>)        = 0
[  168.042529][ T6566] BTRFS info (device loop0): checking UUID tree
[pid  6566] 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}} <unfinished ...>
[pid  6565] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6565] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6565] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6565] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6565] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6565] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[227]}, 88) = 227
[pid  6565] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6565] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6565] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 6584 attached
 <unfinished ...>
[pid  6584] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6584] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6584] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6584] open("./file0", O_RDONLY)   = 5
[pid  6584] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6565] <... futex resumed>)        = 0
[pid  6584] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6565] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6584] <... futex resumed>)        = 0
[pid  6565] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[  168.096111][ T6566] BTRFS info (device loop0): balance: start -d -m
[  168.105730][ T6566] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  168.135031][ T6566] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6584] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  6565] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  6584] <... ioctl resumed>)        = 0
[pid  6584] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  168.300472][ T6566] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  168.324697][ T6566] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  6584] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6566] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6566] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6566] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6565] close(3)                    = 0
[pid  6565] close(4)                    = 0
[pid  6565] close(5)                    = 0
[pid  6565] close(6)                    = -1 EBADF (Bad file descriptor)
[  168.344728][ T6566] BTRFS info (device loop0): balance: ended with status: 0
[pid  6565] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6565] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6565] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6565] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6565] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6565] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6565] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6565] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6565] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6565] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6565] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6565] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6565] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6565] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6565] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6565] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6565] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6565] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6565] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6565] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6565] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6565] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6565] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6565] exit_group(0 <unfinished ...>
[pid  6584] <... futex resumed>)        = ?
[pid  6584] +++ exited with 0 +++
[pid  6566] <... futex resumed>)        = ?
[pid  6565] <... exit_group resumed>)   = ?
[pid  6566] +++ exited with 0 +++
[pid  6565] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=225, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=46 /* 0.46 s */} ---
[pid  5073] umount2("./74", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./74", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./74/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./74/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./74/binderfs")     = 0
[pid  5073] umount2("./74/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./74/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./74/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./74/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./74/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./74/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./74")               = 0
[pid  5073] mkdir("./75", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6585 attached
, child_tidptr=0x5555570a9690) = 228
[pid  6585] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6585] chdir("./75")               = 0
[pid  6585] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6585] setpgid(0, 0)               = 0
[pid  6585] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6585] write(3, "1000", 4)         = 4
[pid  6585] close(3)                    = 0
[pid  6585] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6585] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6585] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6585] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6585] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6585] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6586 attached
 <unfinished ...>
[pid  6586] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  6585] <... clone3 resumed> => {parent_tid=[229]}, 88) = 229
[pid  6586] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6585] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6586] <... set_robust_list resumed>) = 0
[pid  6585] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6586] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6585] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6586] memfd_create("syzkaller", 0 <unfinished ...>
[pid  6585] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6586] <... memfd_create resumed>) = 3
[pid  6586] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6586] 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) = 16777216
[pid  6586] munmap(0x7f877d82c000, 138412032) = 0
[pid  6586] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6586] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6586] close(3)                    = 0
[pid  6586] mkdir("./file0", 0777)      = 0
[  168.989302][ T6586] loop0: detected capacity change from 0 to 32768
[  169.013199][ T6586] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6586)
[  169.028312][ T6586] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  169.037764][ T6586] BTRFS info (device loop0): force clearing of disk cache
[  169.044975][ T6586] BTRFS info (device loop0): setting nodatasum
[  169.051145][ T6586] BTRFS info (device loop0): allowing degraded mounts
[  169.057955][ T6586] BTRFS info (device loop0): enabling disk space caching
[  169.065922][ T6586] BTRFS info (device loop0): disk space caching is enabled
[  169.087722][ T6586] BTRFS info (device loop0): enabling ssd optimizations
[  169.094725][ T6586] BTRFS info (device loop0): auto enabling async discard
[  169.102653][ T6586] BTRFS info (device loop0): rebuilding free space tree
[  169.116460][ T6586] BTRFS info (device loop0): disabling free space tree
[  169.123565][ T6586] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  6586] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6586] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6586] chdir("./file0")            = 0
[pid  6586] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6586] close(4)                    = 0
[pid  6586] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6586] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6585] <... futex resumed>)        = 0
[pid  6586] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6585] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6586] open("./file0", O_RDONLY)   = 4
[pid  6585] <... futex resumed>)        = 0
[pid  6585] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[  169.133637][ T6586] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  169.147202][ T6586] BTRFS info (device loop0): checking UUID tree
[pid  6586] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6585] <... futex resumed>)        = 0
[pid  6586] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable)
[pid  6585] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6586] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  6585] <... futex resumed>)        = 0
[pid  6585] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6586] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6585] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6585] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6586] 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}} <unfinished ...>
[pid  6585] <... futex resumed>)        = 0
[pid  6585] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6585] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6585] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6585] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6585] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6585] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 6604 attached
 <unfinished ...>
[pid  6604] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  6585] <... clone3 resumed> => {parent_tid=[230]}, 88) = 230
[pid  6604] <... rseq resumed>)         = 0
[pid  6585] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6585] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6604] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6585] <... futex resumed>)        = 0
[  169.228129][ T6586] BTRFS info (device loop0): balance: start -d -m
[  169.238063][ T6586] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  169.261492][ T6586] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6604] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6585] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6604] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6604] open("./file0", O_RDONLY)   = 5
[pid  6604] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6585] <... futex resumed>)        = 0
[pid  6604] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  6585] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  169.314278][ T6586] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  6585] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6585] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  6604] <... ioctl resumed>)        = 0
[pid  6604] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6604] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6586] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6586] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6586] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6585] close(3)                    = 0
[pid  6585] close(4)                    = 0
[pid  6585] close(5)                    = 0
[pid  6585] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6585] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6585] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6585] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6585] close(10)                   = -1 EBADF (Bad file descriptor)
[  169.443066][ T6586] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  169.463997][ T6586] BTRFS info (device loop0): balance: ended with status: 0
[pid  6585] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6585] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6585] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6585] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6585] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6585] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6585] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6585] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6585] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6585] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6585] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6585] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6585] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6585] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6585] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6585] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6585] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6585] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6585] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6585] exit_group(0 <unfinished ...>
[pid  6586] <... futex resumed>)        = ?
[pid  6604] <... futex resumed>)        = ?
[pid  6586] +++ exited with 0 +++
[pid  6585] <... exit_group resumed>)   = ?
[pid  6604] +++ exited with 0 +++
[pid  6585] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=228, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=39 /* 0.39 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./75", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./75", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./75/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./75/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./75/binderfs")     = 0
[pid  5073] umount2("./75/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./75/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./75/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./75/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./75/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./75/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./75")               = 0
[pid  5073] mkdir("./76", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6605 attached
, child_tidptr=0x5555570a9690) = 231
[pid  6605] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6605] chdir("./76")               = 0
[pid  6605] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6605] setpgid(0, 0)               = 0
[pid  6605] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6605] write(3, "1000", 4)         = 4
[pid  6605] close(3)                    = 0
[pid  6605] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6605] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6605] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6605] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6605] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6605] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6606 attached
 <unfinished ...>
[pid  6606] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  6606] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6605] <... clone3 resumed> => {parent_tid=[232]}, 88) = 232
[pid  6606] <... set_robust_list resumed>) = 0
[pid  6605] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6606] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6605] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6606] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6605] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6606] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6605] <... futex resumed>)        = 0
[pid  6606] memfd_create("syzkaller", 0 <unfinished ...>
[pid  6605] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6606] <... memfd_create resumed>) = 3
[pid  6606] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6606] 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) = 16777216
[pid  6606] munmap(0x7f877d82c000, 138412032) = 0
[pid  6606] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6606] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6606] close(3)                    = 0
[pid  6606] mkdir("./file0", 0777)      = 0
[  170.150025][ T6606] loop0: detected capacity change from 0 to 32768
[  170.163976][ T6606] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6606)
[  170.179933][ T6606] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  170.189232][ T6606] BTRFS info (device loop0): force clearing of disk cache
[  170.196389][ T6606] BTRFS info (device loop0): setting nodatasum
[  170.202536][ T6606] BTRFS info (device loop0): allowing degraded mounts
[  170.209331][ T6606] BTRFS info (device loop0): enabling disk space caching
[  170.216444][ T6606] BTRFS info (device loop0): disk space caching is enabled
[  170.238355][ T6606] BTRFS info (device loop0): enabling ssd optimizations
[  170.245679][ T6606] BTRFS info (device loop0): auto enabling async discard
[  170.253652][ T6606] BTRFS info (device loop0): rebuilding free space tree
[  170.266599][ T6606] BTRFS info (device loop0): disabling free space tree
[  170.273490][ T6606] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  170.283194][ T6606] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  6606] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6606] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6606] chdir("./file0")            = 0
[pid  6606] ioctl(4, LOOP_CLR_FD)       = 0
[  170.296710][ T6606] BTRFS info (device loop0): checking UUID tree
[pid  6606] close(4)                    = 0
[pid  6606] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6606] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6605] <... futex resumed>)        = 0
[pid  6605] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6606] <... futex resumed>)        = 0
[pid  6605] <... futex resumed>)        = 1
[pid  6606] open("./file0", O_RDONLY <unfinished ...>
[pid  6605] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6606] <... open resumed>)         = 4
[pid  6606] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6605] <... futex resumed>)        = 0
[pid  6606] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6605] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6606] <... futex resumed>)        = 0
[pid  6605] <... futex resumed>)        = 1
[pid  6606] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  6605] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6606] <... ioctl resumed>)        = 0
[pid  6606] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6605] <... futex resumed>)        = 0
[pid  6605] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6605] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6606] <... futex resumed>)        = 1
[pid  6606] 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}} <unfinished ...>
[pid  6605] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  6605] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  6605] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6605] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6605] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6605] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6605] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[233]}, 88) = 233
[pid  6605] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6605] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6605] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 6624 attached
 <unfinished ...>
[pid  6624] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6624] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6624] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6624] open("./file0", O_RDONLY)   = 5
[pid  6624] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6605] <... futex resumed>)        = 0
[pid  6624] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6605] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6624] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6605] <... futex resumed>)        = 0
[pid  6624] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  170.413846][ T6606] BTRFS info (device loop0): balance: start -d -m
[  170.422858][ T6606] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  6605] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[  170.469614][ T6606] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6624] <... ioctl resumed>)        = 0
[pid  6624] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  170.582359][ T6606] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  170.606363][ T6606] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  6624] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6606] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6606] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6606] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6605] close(3)                    = 0
[pid  6605] close(4)                    = 0
[pid  6605] close(5)                    = 0
[  170.626407][ T6606] BTRFS info (device loop0): balance: ended with status: 0
[pid  6605] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6605] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6605] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6605] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6605] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6605] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6605] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6605] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6605] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6605] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6605] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6605] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6605] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6605] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6605] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6605] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6605] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6605] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6605] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6605] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6605] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6605] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6605] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6605] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6605] exit_group(0 <unfinished ...>
[pid  6624] <... futex resumed>)        = ?
[pid  6606] <... futex resumed>)        = ?
[pid  6624] +++ exited with 0 +++
[pid  6606] +++ exited with 0 +++
[pid  6605] <... exit_group resumed>)   = ?
[pid  6605] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=231, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=37 /* 0.37 s */} ---
[pid  5073] umount2("./76", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./76", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./76/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./76/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./76/binderfs")     = 0
[pid  5073] umount2("./76/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./76/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./76/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./76/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./76/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./76/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./76")               = 0
[pid  5073] mkdir("./77", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6625 attached
, child_tidptr=0x5555570a9690) = 234
[pid  6625] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6625] chdir("./77")               = 0
[pid  6625] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6625] setpgid(0, 0)               = 0
[pid  6625] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6625] write(3, "1000", 4)         = 4
[pid  6625] close(3)                    = 0
[pid  6625] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6625] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6625] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6625] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6625] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6625] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6626 attached
 <unfinished ...>
[pid  6626] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  6626] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6625] <... clone3 resumed> => {parent_tid=[235]}, 88) = 235
[pid  6626] <... set_robust_list resumed>) = 0
[pid  6625] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6626] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6625] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6626] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6625] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6626] memfd_create("syzkaller", 0 <unfinished ...>
[pid  6625] <... futex resumed>)        = 0
[pid  6625] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6626] <... memfd_create resumed>) = 3
[pid  6626] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6626] 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) = 16777216
[pid  6626] munmap(0x7f877d82c000, 138412032) = 0
[pid  6626] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6626] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6626] close(3)                    = 0
[pid  6626] mkdir("./file0", 0777)      = 0
[  171.284381][ T6626] loop0: detected capacity change from 0 to 32768
[  171.309075][ T6626] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6626)
[  171.324414][ T6626] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  171.333652][ T6626] BTRFS info (device loop0): force clearing of disk cache
[  171.340858][ T6626] BTRFS info (device loop0): setting nodatasum
[  171.347100][ T6626] BTRFS info (device loop0): allowing degraded mounts
[  171.353930][ T6626] BTRFS info (device loop0): enabling disk space caching
[  171.360962][ T6626] BTRFS info (device loop0): disk space caching is enabled
[  171.382560][ T6626] BTRFS info (device loop0): enabling ssd optimizations
[  171.389551][ T6626] BTRFS info (device loop0): auto enabling async discard
[  171.398180][ T6626] BTRFS info (device loop0): rebuilding free space tree
[  171.409909][ T6626] BTRFS info (device loop0): disabling free space tree
[  171.416942][ T6626] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  6626] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6626] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6626] chdir("./file0")            = 0
[pid  6626] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6626] close(4)                    = 0
[pid  6626] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6625] <... futex resumed>)        = 0
[pid  6625] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6626] open("./file0", O_RDONLY <unfinished ...>
[pid  6625] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6626] <... open resumed>)         = 4
[pid  6626] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6626] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6625] <... futex resumed>)        = 0
[pid  6625] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6626] <... futex resumed>)        = 0
[pid  6625] <... futex resumed>)        = 1
[pid  6626] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  6625] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6626] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6625] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6626] 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}} <unfinished ...>
[pid  6625] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  171.426644][ T6626] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  171.439742][ T6626] BTRFS info (device loop0): checking UUID tree
[pid  6625] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6625] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6625] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6625] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6625] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6625] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 6644 attached
[  171.481140][ T6626] BTRFS info (device loop0): balance: start -d -m
[  171.490053][ T6626] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  171.517461][ T6626] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
 <unfinished ...>
[pid  6644] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  6625] <... clone3 resumed> => {parent_tid=[236]}, 88) = 236
[pid  6644] <... rseq resumed>)         = 0
[pid  6625] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6644] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  6625] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6644] <... set_robust_list resumed>) = 0
[pid  6644] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6625] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6644] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6644] open("./file0", O_RDONLY)   = 5
[pid  6625] <... futex resumed>)        = 0
[pid  6644] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6625] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid  6644] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  6625] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6625] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6644] <... ioctl resumed>)        = 0
[pid  6644] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  171.691023][ T6626] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  171.718854][ T6626] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  6644] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6626] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6626] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6626] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6625] close(3)                    = 0
[pid  6625] close(4)                    = 0
[pid  6625] close(5)                    = 0
[pid  6625] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6625] close(7)                    = -1 EBADF (Bad file descriptor)
[  171.738328][ T6626] BTRFS info (device loop0): balance: ended with status: 0
[pid  6625] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6625] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6625] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6625] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6625] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6625] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6625] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6625] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6625] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6625] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6625] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6625] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6625] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6625] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6625] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6625] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6625] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6625] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6625] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6625] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6625] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6625] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6625] exit_group(0 <unfinished ...>
[pid  6644] <... futex resumed>)        = ?
[pid  6644] +++ exited with 0 +++
[pid  6626] <... futex resumed>)        = ?
[pid  6625] <... exit_group resumed>)   = ?
[pid  6626] +++ exited with 0 +++
[pid  6625] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=234, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=38 /* 0.38 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./77", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./77", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./77/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./77/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./77/binderfs")     = 0
[pid  5073] umount2("./77/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./77/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./77/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./77/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./77/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./77/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./77")               = 0
[pid  5073] mkdir("./78", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6645 attached
, child_tidptr=0x5555570a9690) = 237
[pid  6645] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6645] chdir("./78")               = 0
[pid  6645] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6645] setpgid(0, 0)               = 0
[pid  6645] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6645] write(3, "1000", 4)         = 4
[pid  6645] close(3)                    = 0
[pid  6645] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6645] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6645] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6645] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6645] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6645] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6646 attached
 <unfinished ...>
[pid  6646] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  6645] <... clone3 resumed> => {parent_tid=[238]}, 88) = 238
[pid  6646] <... rseq resumed>)         = 0
[pid  6645] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6646] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6645] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6646] <... set_robust_list resumed>) = 0
[pid  6645] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6646] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6645] <... futex resumed>)        = 0
[pid  6646] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6645] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6646] memfd_create("syzkaller", 0) = 3
[pid  6646] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6646] 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) = 16777216
[pid  6646] munmap(0x7f877d82c000, 138412032) = 0
[pid  6646] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6646] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6646] close(3)                    = 0
[pid  6646] mkdir("./file0", 0777)      = 0
[  172.352533][ T6646] loop0: detected capacity change from 0 to 32768
[  172.372658][ T6646] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6646)
[  172.387953][ T6646] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  172.397237][ T6646] BTRFS info (device loop0): force clearing of disk cache
[  172.404387][ T6646] BTRFS info (device loop0): setting nodatasum
[  172.410550][ T6646] BTRFS info (device loop0): allowing degraded mounts
[  172.417358][ T6646] BTRFS info (device loop0): enabling disk space caching
[  172.424434][ T6646] BTRFS info (device loop0): disk space caching is enabled
[  172.446177][ T6646] BTRFS info (device loop0): enabling ssd optimizations
[  172.453122][ T6646] BTRFS info (device loop0): auto enabling async discard
[  172.461148][ T6646] BTRFS info (device loop0): rebuilding free space tree
[  172.472926][ T6646] BTRFS info (device loop0): disabling free space tree
[  172.480258][ T6646] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  172.490252][ T6646] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  6646] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6646] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6646] chdir("./file0")            = 0
[pid  6646] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6646] close(4)                    = 0
[pid  6646] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6645] <... futex resumed>)        = 0
[pid  6646] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6645] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6646] <... futex resumed>)        = 0
[pid  6645] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6646] open("./file0", O_RDONLY)   = 4
[  172.504406][ T6646] BTRFS info (device loop0): checking UUID tree
[pid  6646] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6645] <... futex resumed>)        = 0
[pid  6646] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6645] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6646] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6646] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  6645] <... futex resumed>)        = 0
[pid  6645] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6646] <... ioctl resumed>)        = 0
[pid  6646] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6645] <... futex resumed>)        = 0
[pid  6646] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6645] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6646] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6645] <... futex resumed>)        = 0
[pid  6646] 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}} <unfinished ...>
[pid  6645] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6645] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6645] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6645] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6645] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6645] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[239]}, 88) = 239
[pid  6645] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6645] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6645] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 6664 attached
 <unfinished ...>
[pid  6664] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6664] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6664] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6664] open("./file0", O_RDONLY)   = 5
[pid  6664] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6645] <... futex resumed>)        = 0
[pid  6664] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6645] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6664] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6645] <... futex resumed>)        = 0
[pid  6664] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  172.590968][ T6646] BTRFS info (device loop0): balance: start -d -m
[  172.602015][ T6646] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  172.630472][ T6646] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6645] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6664] <... ioctl resumed>)        = 0
[pid  6664] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  172.777933][ T6646] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  172.802147][ T6646] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  6664] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6646] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6646] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6646] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6645] close(3)                    = 0
[pid  6645] close(4)                    = 0
[pid  6645] close(5)                    = 0
[pid  6645] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6645] close(7)                    = -1 EBADF (Bad file descriptor)
[  172.824286][ T6646] BTRFS info (device loop0): balance: ended with status: 0
[pid  6645] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6645] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6645] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6645] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6645] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6645] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6645] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6645] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6645] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6645] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6645] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6645] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6645] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6645] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6645] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6645] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6645] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6645] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6645] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6645] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6645] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6645] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6645] exit_group(0 <unfinished ...>
[pid  6664] <... futex resumed>)        = ?
[pid  6664] +++ exited with 0 +++
[pid  6645] <... exit_group resumed>)   = ?
[pid  6646] <... futex resumed>)        = ?
[pid  6646] +++ exited with 0 +++
[pid  6645] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=237, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=45 /* 0.45 s */} ---
[pid  5073] umount2("./78", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./78", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./78/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./78/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./78/binderfs")     = 0
[pid  5073] umount2("./78/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./78/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./78/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./78/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./78/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./78/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./78")               = 0
[pid  5073] mkdir("./79", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6665 attached
, child_tidptr=0x5555570a9690) = 240
[pid  6665] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6665] chdir("./79")               = 0
[pid  6665] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6665] setpgid(0, 0)               = 0
[pid  6665] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6665] write(3, "1000", 4)         = 4
[pid  6665] close(3)                    = 0
[pid  6665] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6665] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6665] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6665] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6665] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6665] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6666 attached
 <unfinished ...>
[pid  6666] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  6666] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6665] <... clone3 resumed> => {parent_tid=[241]}, 88) = 241
[pid  6666] <... set_robust_list resumed>) = 0
[pid  6665] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6666] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6665] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6666] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6665] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6666] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6665] <... futex resumed>)        = 0
[pid  6665] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6666] memfd_create("syzkaller", 0) = 3
[pid  6666] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6666] 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) = 16777216
[pid  6666] munmap(0x7f877d82c000, 138412032) = 0
[pid  6666] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6666] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6666] close(3)                    = 0
[pid  6666] mkdir("./file0", 0777)      = 0
[  173.479605][ T6666] loop0: detected capacity change from 0 to 32768
[  173.503585][ T6666] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6666)
[  173.519794][ T6666] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  173.529067][ T6666] BTRFS info (device loop0): force clearing of disk cache
[  173.536211][ T6666] BTRFS info (device loop0): setting nodatasum
[  173.542354][ T6666] BTRFS info (device loop0): allowing degraded mounts
[  173.549172][ T6666] BTRFS info (device loop0): enabling disk space caching
[  173.556249][ T6666] BTRFS info (device loop0): disk space caching is enabled
[  173.578756][ T6666] BTRFS info (device loop0): enabling ssd optimizations
[  173.585851][ T6666] BTRFS info (device loop0): auto enabling async discard
[  173.593972][ T6666] BTRFS info (device loop0): rebuilding free space tree
[  173.606052][ T6666] BTRFS info (device loop0): disabling free space tree
[  173.612976][ T6666] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  6666] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6666] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6666] chdir("./file0")            = 0
[pid  6666] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6666] close(4)                    = 0
[pid  6666] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6665] <... futex resumed>)        = 0
[pid  6666] <... futex resumed>)        = 1
[pid  6665] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6666] open("./file0", O_RDONLY <unfinished ...>
[pid  6665] <... futex resumed>)        = 0
[pid  6666] <... open resumed>)         = 4
[pid  6665] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6666] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6665] <... futex resumed>)        = 0
[pid  6666] <... futex resumed>)        = 1
[pid  6665] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6666] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  6665] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6666] <... ioctl resumed>)        = 0
[pid  6666] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6665] <... futex resumed>)        = 0
[pid  6665] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6665] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[  173.622708][ T6666] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  173.636184][ T6666] BTRFS info (device loop0): checking UUID tree
[pid  6666] 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}} <unfinished ...>
[pid  6665] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  6665] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6665] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6665] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6665] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6665] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 6684 attached
 => {parent_tid=[242]}, 88) = 242
[pid  6665] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6684] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6665] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6665] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6684] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  6665] <... futex resumed>)        = 0
[pid  6684] <... set_robust_list resumed>) = 0
[pid  6665] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6684] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6684] open("./file0", O_RDONLY)   = 5
[pid  6684] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6665] <... futex resumed>)        = 0
[pid  6684] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6665] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6684] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6665] <... futex resumed>)        = 0
[pid  6684] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  173.686626][ T6666] BTRFS info (device loop0): balance: start -d -m
[  173.697486][ T6666] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  173.722630][ T6666] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6665] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6684] <... ioctl resumed>)        = 0
[pid  6684] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  173.902825][ T6666] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  173.927524][ T6666] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  6684] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6666] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6666] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6666] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6665] close(3)                    = 0
[pid  6665] close(4)                    = 0
[pid  6665] close(5)                    = 0
[pid  6665] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6665] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6665] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6665] close(9)                    = -1 EBADF (Bad file descriptor)
[  173.947276][ T6666] BTRFS info (device loop0): balance: ended with status: 0
[pid  6665] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6665] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6665] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6665] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6665] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6665] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6665] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6665] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6665] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6665] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6665] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6665] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6665] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6665] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6665] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6665] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6665] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6665] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6665] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6665] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6665] exit_group(0)               = ?
[pid  6684] <... futex resumed>)        = ?
[pid  6684] +++ exited with 0 +++
[pid  6666] <... futex resumed>)        = ?
[pid  6666] +++ exited with 0 +++
[pid  6665] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=240, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=39 /* 0.39 s */} ---
[pid  5073] umount2("./79", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./79", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./79/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./79/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./79/binderfs")     = 0
[pid  5073] umount2("./79/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./79/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./79/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./79/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./79/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./79/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./79")               = 0
[pid  5073] mkdir("./80", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6685 attached
 <unfinished ...>
[pid  6685] set_robust_list(0x5555570a96a0, 24 <unfinished ...>
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 243
[pid  6685] <... set_robust_list resumed>) = 0
[pid  6685] chdir("./80")               = 0
[pid  6685] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6685] setpgid(0, 0)               = 0
[pid  6685] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6685] write(3, "1000", 4)         = 4
[pid  6685] close(3)                    = 0
[pid  6685] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6685] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6685] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6685] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6685] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6685] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6686 attached
 <unfinished ...>
[pid  6686] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  6685] <... clone3 resumed> => {parent_tid=[244]}, 88) = 244
[pid  6686] <... rseq resumed>)         = 0
[pid  6685] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6686] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6685] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6686] <... set_robust_list resumed>) = 0
[pid  6686] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6685] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6686] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6686] memfd_create("syzkaller", 0 <unfinished ...>
[pid  6685] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6686] <... memfd_create resumed>) = 3
[pid  6686] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6686] 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) = 16777216
[pid  6686] munmap(0x7f877d82c000, 138412032) = 0
[pid  6686] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6686] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6686] close(3)                    = 0
[pid  6686] mkdir("./file0", 0777)      = 0
[  174.591593][ T6686] loop0: detected capacity change from 0 to 32768
[  174.606530][ T6686] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6686)
[  174.622410][ T6686] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  174.631694][ T6686] BTRFS info (device loop0): force clearing of disk cache
[  174.638880][ T6686] BTRFS info (device loop0): setting nodatasum
[  174.645103][ T6686] BTRFS info (device loop0): allowing degraded mounts
[  174.651876][ T6686] BTRFS info (device loop0): enabling disk space caching
[  174.658988][ T6686] BTRFS info (device loop0): disk space caching is enabled
[  174.680951][ T6686] BTRFS info (device loop0): enabling ssd optimizations
[  174.688044][ T6686] BTRFS info (device loop0): auto enabling async discard
[  174.696314][ T6686] BTRFS info (device loop0): rebuilding free space tree
[  174.708646][ T6686] BTRFS info (device loop0): disabling free space tree
[  174.715631][ T6686] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  174.725289][ T6686] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  6686] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6686] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6686] chdir("./file0")            = 0
[pid  6686] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6686] close(4)                    = 0
[pid  6686] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6685] <... futex resumed>)        = 0
[pid  6686] open("./file0", O_RDONLY <unfinished ...>
[pid  6685] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6686] <... open resumed>)         = 4
[pid  6685] <... futex resumed>)        = 0
[  174.738214][ T6686] BTRFS info (device loop0): checking UUID tree
[pid  6685] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6686] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6685] <... futex resumed>)        = 0
[pid  6686] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  6685] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6686] <... ioctl resumed>)        = 0
[pid  6685] <... futex resumed>)        = 0
[pid  6685] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6686] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6685] <... futex resumed>)        = 0
[pid  6686] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6685] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6686] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6685] <... futex resumed>)        = 0
[pid  6686] 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}} <unfinished ...>
[pid  6685] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6685] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6685] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6685] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6685] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6685] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[245]}, 88) = 245
[pid  6685] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6685] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
./strace-static-x86_64: Process 6704 attached
[pid  6685] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6704] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6704] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6704] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6704] open("./file0", O_RDONLY)   = 5
[pid  6704] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6704] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6685] <... futex resumed>)        = 0
[pid  6685] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6704] <... futex resumed>)        = 0
[pid  6704] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  174.830348][ T6686] BTRFS info (device loop0): balance: start -d -m
[  174.839017][ T6686] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  174.865890][ T6686] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6685] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[  174.954596][ T6686] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  6704] <... ioctl resumed>)        = 0
[pid  6704] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6704] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6686] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6686] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6685] close(3 <unfinished ...>
[pid  6686] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6685] <... close resumed>)        = 0
[pid  6685] close(4)                    = 0
[pid  6685] close(5)                    = 0
[pid  6685] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6685] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6685] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6685] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6685] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6685] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6685] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6685] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6685] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6685] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6685] close(16)                   = -1 EBADF (Bad file descriptor)
[  175.026305][ T6686] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  175.045419][ T6686] BTRFS info (device loop0): balance: ended with status: 0
[pid  6685] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6685] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6685] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6685] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6685] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6685] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6685] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6685] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6685] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6685] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6685] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6685] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6685] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6685] exit_group(0)               = ?
[pid  6704] <... futex resumed>)        = ?
[pid  6686] <... futex resumed>)        = ?
[pid  6704] +++ exited with 0 +++
[pid  6686] +++ exited with 0 +++
[pid  6685] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=243, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=41 /* 0.41 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./80", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./80", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./80/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./80/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./80/binderfs")     = 0
[pid  5073] umount2("./80/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./80/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./80/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./80/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./80/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./80/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./80")               = 0
[pid  5073] mkdir("./81", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6705 attached
 <unfinished ...>
[pid  6705] set_robust_list(0x5555570a96a0, 24 <unfinished ...>
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 246
[pid  6705] <... set_robust_list resumed>) = 0
[pid  6705] chdir("./81")               = 0
[pid  6705] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6705] setpgid(0, 0)               = 0
[pid  6705] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6705] write(3, "1000", 4)         = 4
[pid  6705] close(3)                    = 0
[pid  6705] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6705] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6705] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6705] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6705] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6705] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6706 attached
 <unfinished ...>
[pid  6706] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  6706] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6705] <... clone3 resumed> => {parent_tid=[247]}, 88) = 247
[pid  6706] <... set_robust_list resumed>) = 0
[pid  6705] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6706] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6705] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6706] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6705] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6706] memfd_create("syzkaller", 0 <unfinished ...>
[pid  6705] <... futex resumed>)        = 0
[pid  6705] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6706] <... memfd_create resumed>) = 3
[pid  6706] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6706] 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) = 16777216
[pid  6706] munmap(0x7f877d82c000, 138412032) = 0
[pid  6706] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6706] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6706] close(3)                    = 0
[pid  6706] mkdir("./file0", 0777)      = 0
[  175.671812][ T6706] loop0: detected capacity change from 0 to 32768
[  175.696272][ T6706] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6706)
[  175.712086][ T6706] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  175.721400][ T6706] BTRFS info (device loop0): force clearing of disk cache
[  175.728605][ T6706] BTRFS info (device loop0): setting nodatasum
[  175.734850][ T6706] BTRFS info (device loop0): allowing degraded mounts
[  175.741620][ T6706] BTRFS info (device loop0): enabling disk space caching
[  175.748947][ T6706] BTRFS info (device loop0): disk space caching is enabled
[  175.770655][ T6706] BTRFS info (device loop0): enabling ssd optimizations
[  175.777648][ T6706] BTRFS info (device loop0): auto enabling async discard
[  175.785753][ T6706] BTRFS info (device loop0): rebuilding free space tree
[  175.797737][ T6706] BTRFS info (device loop0): disabling free space tree
[  175.804688][ T6706] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  6706] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6706] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6706] chdir("./file0")            = 0
[pid  6706] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6706] close(4)                    = 0
[pid  6706] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6705] <... futex resumed>)        = 0
[pid  6706] <... futex resumed>)        = 1
[pid  6705] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6706] open("./file0", O_RDONLY <unfinished ...>
[pid  6705] <... futex resumed>)        = 0
[pid  6705] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6706] <... open resumed>)         = 4
[pid  6706] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6706] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6705] <... futex resumed>)        = 0
[pid  6705] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6706] <... futex resumed>)        = 0
[pid  6705] <... futex resumed>)        = 1
[pid  6706] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  6706] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6705] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6706] <... futex resumed>)        = 0
[pid  6705] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6706] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6705] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6706] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6705] <... futex resumed>)        = 0
[pid  6706] 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}} <unfinished ...>
[  175.814356][ T6706] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  175.827930][ T6706] BTRFS info (device loop0): checking UUID tree
[pid  6705] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6705] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6705] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6705] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6705] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6705] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[248]}, 88) = 248
[pid  6705] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6705] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6705] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 6724 attached
 <unfinished ...>
[pid  6724] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6724] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6724] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6724] open("./file0", O_RDONLY)   = 5
[pid  6724] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6705] <... futex resumed>)        = 0
[pid  6724] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6705] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6705] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6724] <... futex resumed>)        = 0
[  175.882162][ T6706] BTRFS info (device loop0): balance: start -d -m
[  175.891510][ T6706] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  175.916537][ T6706] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6724] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  6705] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  6705] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[  176.024262][ T6706] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  6724] <... ioctl resumed>)        = 0
[pid  6724] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6724] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6706] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6706] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6705] close(3 <unfinished ...>
[pid  6706] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6705] <... close resumed>)        = 0
[pid  6705] close(4)                    = 0
[pid  6705] close(5)                    = 0
[pid  6705] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6705] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6705] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6705] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6705] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6705] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6705] close(12)                   = -1 EBADF (Bad file descriptor)
[  176.124308][ T6706] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  176.144032][ T6706] BTRFS info (device loop0): balance: ended with status: 0
[pid  6705] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6705] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6705] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6705] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6705] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6705] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6705] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6705] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6705] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6705] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6705] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6705] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6705] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6705] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6705] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6705] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6705] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6705] exit_group(0 <unfinished ...>
[pid  6724] <... futex resumed>)        = ?
[pid  6706] <... futex resumed>)        = ?
[pid  6705] <... exit_group resumed>)   = ?
[pid  6724] +++ exited with 0 +++
[pid  6706] +++ exited with 0 +++
[pid  6705] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=246, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=43 /* 0.43 s */} ---
[pid  5073] umount2("./81", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./81", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./81/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./81/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./81/binderfs")     = 0
[pid  5073] umount2("./81/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./81/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./81/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./81/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./81/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./81/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./81")               = 0
[pid  5073] mkdir("./82", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6725 attached
 <unfinished ...>
[pid  6725] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6725] chdir("./82")               = 0
[pid  6725] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6725] setpgid(0, 0 <unfinished ...>
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 249
[pid  6725] <... setpgid resumed>)      = 0
[pid  6725] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6725] write(3, "1000", 4)         = 4
[pid  6725] close(3)                    = 0
[pid  6725] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6725] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6725] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6725] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6725] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6725] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6726 attached
 => {parent_tid=[250]}, 88) = 250
[pid  6726] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  6726] set_robust_list(0x7f8785c4c9a0, 24) = 0
[pid  6725] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6726] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6725] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6726] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6725] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6726] memfd_create("syzkaller", 0 <unfinished ...>
[pid  6725] <... futex resumed>)        = 0
[pid  6725] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6726] <... memfd_create resumed>) = 3
[pid  6726] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6726] 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) = 16777216
[pid  6726] munmap(0x7f877d82c000, 138412032) = 0
[pid  6726] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6726] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6726] close(3)                    = 0
[pid  6726] mkdir("./file0", 0777)      = 0
[  176.751453][ T6726] loop0: detected capacity change from 0 to 32768
[  176.776355][ T6726] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6726)
[  176.792035][ T6726] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  176.801324][ T6726] BTRFS info (device loop0): force clearing of disk cache
[  176.808466][ T6726] BTRFS info (device loop0): setting nodatasum
[  176.814655][ T6726] BTRFS info (device loop0): allowing degraded mounts
[  176.821432][ T6726] BTRFS info (device loop0): enabling disk space caching
[  176.828525][ T6726] BTRFS info (device loop0): disk space caching is enabled
[  176.850071][ T6726] BTRFS info (device loop0): enabling ssd optimizations
[  176.857069][ T6726] BTRFS info (device loop0): auto enabling async discard
[  176.865169][ T6726] BTRFS info (device loop0): rebuilding free space tree
[  176.877002][ T6726] BTRFS info (device loop0): disabling free space tree
[  176.884268][ T6726] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  6726] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6726] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6726] chdir("./file0")            = 0
[pid  6726] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6726] close(4)                    = 0
[pid  6726] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6725] <... futex resumed>)        = 0
[pid  6726] <... futex resumed>)        = 1
[pid  6725] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6726] open("./file0", O_RDONLY <unfinished ...>
[pid  6725] <... futex resumed>)        = 0
[pid  6725] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6726] <... open resumed>)         = 4
[  176.893949][ T6726] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  176.907052][ T6726] BTRFS info (device loop0): checking UUID tree
[pid  6726] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6726] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6725] <... futex resumed>)        = 0
[pid  6725] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6726] <... futex resumed>)        = 0
[pid  6725] <... futex resumed>)        = 1
[pid  6726] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  6726] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6725] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6726] <... futex resumed>)        = 0
[pid  6726] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6725] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6725] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6726] <... futex resumed>)        = 0
[pid  6725] <... futex resumed>)        = 1
[pid  6726] 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}} <unfinished ...>
[pid  6725] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6725] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6725] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6725] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6725] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6725] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[251]}, 88) = 251
[pid  6725] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
./strace-static-x86_64: Process 6744 attached
[pid  6744] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  6725] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6744] <... rseq resumed>)         = 0
[pid  6744] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  6725] <... futex resumed>)        = 0
[pid  6744] <... set_robust_list resumed>) = 0
[pid  6725] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6744] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6744] open("./file0", O_RDONLY)   = 5
[pid  6744] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6725] <... futex resumed>)        = 0
[pid  6725] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6744] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  6725] <... futex resumed>)        = 0
[  176.980138][ T6726] BTRFS info (device loop0): balance: start -d -m
[  176.989874][ T6726] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  177.017927][ T6726] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6725] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6744] <... ioctl resumed>)        = 0
[pid  6744] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  177.197615][ T6726] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  177.222626][ T6726] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  6744] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6726] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6726] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6726] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6725] close(3)                    = 0
[pid  6725] close(4)                    = 0
[pid  6725] close(5)                    = 0
[pid  6725] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6725] close(7)                    = -1 EBADF (Bad file descriptor)
[  177.243753][ T6726] BTRFS info (device loop0): balance: ended with status: 0
[pid  6725] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6725] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6725] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6725] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6725] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6725] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6725] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6725] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6725] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6725] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6725] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6725] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6725] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6725] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6725] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6725] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6725] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6725] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6725] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6725] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6725] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6725] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6725] exit_group(0 <unfinished ...>
[pid  6744] <... futex resumed>)        = ?
[pid  6744] +++ exited with 0 +++
[pid  6725] <... exit_group resumed>)   = ?
[pid  6726] <... futex resumed>)        = ?
[pid  6726] +++ exited with 0 +++
[pid  6725] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=249, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=46 /* 0.46 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./82", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./82", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./82/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./82/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./82/binderfs")     = 0
[pid  5073] umount2("./82/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./82/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./82/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./82/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./82/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./82/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./82")               = 0
[pid  5073] mkdir("./83", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6745 attached
 <unfinished ...>
[pid  6745] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 252
[pid  6745] chdir("./83")               = 0
[pid  6745] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6745] setpgid(0, 0)               = 0
[pid  6745] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6745] write(3, "1000", 4)         = 4
[pid  6745] close(3)                    = 0
[pid  6745] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6745] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6745] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6745] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6745] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6745] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6746 attached
 <unfinished ...>
[pid  6746] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  6745] <... clone3 resumed> => {parent_tid=[253]}, 88) = 253
[pid  6745] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6745] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6746] <... rseq resumed>)         = 0
[pid  6746] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6745] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6746] <... set_robust_list resumed>) = 0
[pid  6746] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6746] memfd_create("syzkaller", 0) = 3
[pid  6746] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6746] 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) = 16777216
[pid  6746] munmap(0x7f877d82c000, 138412032) = 0
[pid  6746] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6746] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6746] close(3)                    = 0
[pid  6746] mkdir("./file0", 0777)      = 0
[  177.898361][ T6746] loop0: detected capacity change from 0 to 32768
[  177.917978][ T6746] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6746)
[  177.934751][ T6746] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  177.944058][ T6746] BTRFS info (device loop0): force clearing of disk cache
[  177.951179][ T6746] BTRFS info (device loop0): setting nodatasum
[  177.957356][ T6746] BTRFS info (device loop0): allowing degraded mounts
[  177.964145][ T6746] BTRFS info (device loop0): enabling disk space caching
[  177.971171][ T6746] BTRFS info (device loop0): disk space caching is enabled
[  177.993375][ T6746] BTRFS info (device loop0): enabling ssd optimizations
[  178.000395][ T6746] BTRFS info (device loop0): auto enabling async discard
[  178.008570][ T6746] BTRFS info (device loop0): rebuilding free space tree
[  178.020396][ T6746] BTRFS info (device loop0): disabling free space tree
[  178.027382][ T6746] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  178.037078][ T6746] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  6746] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6746] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6746] chdir("./file0")            = 0
[pid  6746] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6746] close(4)                    = 0
[pid  6746] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6746] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6745] <... futex resumed>)        = 0
[pid  6745] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6746] <... futex resumed>)        = 0
[pid  6745] <... futex resumed>)        = 1
[pid  6746] open("./file0", O_RDONLY <unfinished ...>
[pid  6745] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6746] <... open resumed>)         = 4
[  178.050372][ T6746] BTRFS info (device loop0): checking UUID tree
[pid  6746] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6746] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6745] <... futex resumed>)        = 0
[pid  6745] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6746] <... futex resumed>)        = 0
[pid  6746] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  6746] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6745] <... futex resumed>)        = 1
[pid  6746] <... futex resumed>)        = 0
[pid  6745] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6746] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6745] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6745] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6745] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6746] <... futex resumed>)        = 0
[  178.149536][ T6746] BTRFS info (device loop0): balance: start -d -m
[  178.159785][ T6746] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  6746] 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}} <unfinished ...>
[pid  6745] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  6745] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6745] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6745] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6745] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6745] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[254]}, 88) = 254
[pid  6745] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6745] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6745] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 6764 attached
 <unfinished ...>
[pid  6764] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6764] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6764] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6764] open("./file0", O_RDONLY)   = 5
[pid  6764] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6745] <... futex resumed>)        = 0
[pid  6764] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6745] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6764] <... futex resumed>)        = 0
[pid  6745] <... futex resumed>)        = 1
[pid  6764] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  178.191763][ T6746] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6745] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6764] <... ioctl resumed>)        = 0
[pid  6764] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  178.315823][ T6746] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  178.342983][ T6746] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  6764] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6746] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6746] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6746] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6745] close(3)                    = 0
[pid  6745] close(4)                    = 0
[pid  6745] close(5)                    = 0
[pid  6745] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6745] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6745] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6745] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6745] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6745] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6745] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6745] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6745] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6745] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6745] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6745] close(17)                   = -1 EBADF (Bad file descriptor)
[  178.365687][ T6746] BTRFS info (device loop0): balance: ended with status: 0
[pid  6745] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6745] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6745] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6745] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6745] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6745] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6745] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6745] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6745] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6745] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6745] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6745] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6745] exit_group(0 <unfinished ...>
[pid  6764] <... futex resumed>)        = ?
[pid  6746] <... futex resumed>)        = ?
[pid  6745] <... exit_group resumed>)   = ?
[pid  6764] +++ exited with 0 +++
[pid  6746] +++ exited with 0 +++
[pid  6745] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=252, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=39 /* 0.39 s */} ---
[pid  5073] umount2("./83", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./83", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./83/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./83/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./83/binderfs")     = 0
[pid  5073] umount2("./83/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./83/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./83/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./83/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./83/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./83/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./83")               = 0
[pid  5073] mkdir("./84", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6765 attached
 <unfinished ...>
[pid  6765] set_robust_list(0x5555570a96a0, 24 <unfinished ...>
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 255
[pid  6765] <... set_robust_list resumed>) = 0
[pid  6765] chdir("./84")               = 0
[pid  6765] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6765] setpgid(0, 0)               = 0
[pid  6765] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6765] write(3, "1000", 4)         = 4
[pid  6765] close(3)                    = 0
[pid  6765] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6765] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6765] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6765] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6765] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6765] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6766 attached
 <unfinished ...>
[pid  6766] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  6766] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6765] <... clone3 resumed> => {parent_tid=[256]}, 88) = 256
[pid  6766] <... set_robust_list resumed>) = 0
[pid  6765] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6766] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6765] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6766] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6765] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6766] memfd_create("syzkaller", 0 <unfinished ...>
[pid  6765] <... futex resumed>)        = 0
[pid  6765] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6766] <... memfd_create resumed>) = 3
[pid  6766] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6766] 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) = 16777216
[pid  6766] munmap(0x7f877d82c000, 138412032) = 0
[pid  6766] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6766] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6766] close(3)                    = 0
[pid  6766] mkdir("./file0", 0777)      = 0
[  178.857585][ T6766] loop0: detected capacity change from 0 to 32768
[  178.872281][ T6766] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6766)
[  178.888520][ T6766] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  178.897825][ T6766] BTRFS info (device loop0): force clearing of disk cache
[  178.905020][ T6766] BTRFS info (device loop0): setting nodatasum
[  178.911435][ T6766] BTRFS info (device loop0): allowing degraded mounts
[  178.918590][ T6766] BTRFS info (device loop0): enabling disk space caching
[  178.925799][ T6766] BTRFS info (device loop0): disk space caching is enabled
[  178.948190][ T6766] BTRFS info (device loop0): enabling ssd optimizations
[  178.955230][ T6766] BTRFS info (device loop0): auto enabling async discard
[  178.962981][ T6766] BTRFS info (device loop0): rebuilding free space tree
[  178.974858][ T6766] BTRFS info (device loop0): disabling free space tree
[  178.981762][ T6766] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  6766] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6766] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6766] chdir("./file0")            = 0
[pid  6766] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6766] close(4)                    = 0
[pid  6766] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6765] <... futex resumed>)        = 0
[pid  6765] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6766] open("./file0", O_RDONLY)   = 4
[pid  6765] <... futex resumed>)        = 0
[  178.991709][ T6766] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  179.005252][ T6766] BTRFS info (device loop0): checking UUID tree
[pid  6765] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6766] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6765] <... futex resumed>)        = 0
[pid  6766] <... futex resumed>)        = 1
[pid  6765] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6766] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  6765] <... futex resumed>)        = 0
[pid  6766] <... ioctl resumed>)        = 0
[pid  6765] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6766] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6765] <... futex resumed>)        = 0
[pid  6765] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6766] 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}} <unfinished ...>
[pid  6765] <... futex resumed>)        = 0
[  179.085336][ T6766] BTRFS info (device loop0): balance: start -d -m
[  179.095163][ T6766] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  6765] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6765] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6765] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6765] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6765] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6765] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[257]}, 88) = 257
[pid  6765] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6765] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6765] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 6784 attached
 <unfinished ...>
[pid  6784] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6784] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6784] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6784] open("./file0", O_RDONLY)   = 5
[pid  6784] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6765] <... futex resumed>)        = 0
[pid  6784] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6765] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6784] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6765] <... futex resumed>)        = 0
[pid  6784] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  179.125535][ T6766] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6765] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6784] <... ioctl resumed>)        = 0
[pid  6784] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  179.272332][ T6766] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  179.296707][ T6766] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  6784] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6766] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6766] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6766] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6765] close(3)                    = 0
[pid  6765] close(4)                    = 0
[pid  6765] close(5)                    = 0
[pid  6765] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6765] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6765] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6765] close(9)                    = -1 EBADF (Bad file descriptor)
[  179.316860][ T6766] BTRFS info (device loop0): balance: ended with status: 0
[pid  6765] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6765] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6765] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6765] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6765] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6765] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6765] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6765] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6765] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6765] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6765] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6765] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6765] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6765] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6765] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6765] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6765] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6765] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6765] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6765] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6765] exit_group(0 <unfinished ...>
[pid  6784] <... futex resumed>)        = ?
[pid  6784] +++ exited with 0 +++
[pid  6766] <... futex resumed>)        = ?
[pid  6765] <... exit_group resumed>)   = ?
[pid  6766] +++ exited with 0 +++
[pid  6765] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=255, si_uid=0, si_status=0, si_utime=0, si_stime=42 /* 0.42 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./84", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./84", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./84/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./84/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./84/binderfs")     = 0
[pid  5073] umount2("./84/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./84/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./84/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./84/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./84/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./84/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./84")               = 0
[pid  5073] mkdir("./85", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6785 attached
, child_tidptr=0x5555570a9690) = 258
[pid  6785] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6785] chdir("./85")               = 0
[pid  6785] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6785] setpgid(0, 0)               = 0
[pid  6785] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6785] write(3, "1000", 4)         = 4
[pid  6785] close(3)                    = 0
[pid  6785] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6785] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6785] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6785] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6785] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6785] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6786 attached
 <unfinished ...>
[pid  6786] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  6786] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6785] <... clone3 resumed> => {parent_tid=[259]}, 88) = 259
[pid  6786] <... set_robust_list resumed>) = 0
[pid  6785] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6786] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6785] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6786] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6785] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6786] memfd_create("syzkaller", 0 <unfinished ...>
[pid  6785] <... futex resumed>)        = 0
[pid  6785] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6786] <... memfd_create resumed>) = 3
[pid  6786] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6786] 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) = 16777216
[pid  6786] munmap(0x7f877d82c000, 138412032) = 0
[pid  6786] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6786] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6786] close(3)                    = 0
[pid  6786] mkdir("./file0", 0777)      = 0
[  179.906919][ T6786] loop0: detected capacity change from 0 to 32768
[  179.922107][ T6786] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6786)
[  179.938077][ T6786] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  179.947385][ T6786] BTRFS info (device loop0): force clearing of disk cache
[  179.954567][ T6786] BTRFS info (device loop0): setting nodatasum
[  179.960734][ T6786] BTRFS info (device loop0): allowing degraded mounts
[  179.967591][ T6786] BTRFS info (device loop0): enabling disk space caching
[  179.974642][ T6786] BTRFS info (device loop0): disk space caching is enabled
[  179.997518][ T6786] BTRFS info (device loop0): enabling ssd optimizations
[  180.004520][ T6786] BTRFS info (device loop0): auto enabling async discard
[  180.012664][ T6786] BTRFS info (device loop0): rebuilding free space tree
[  180.025957][ T6786] BTRFS info (device loop0): disabling free space tree
[  180.032856][ T6786] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  6786] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6786] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6786] chdir("./file0")            = 0
[pid  6786] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6786] close(4)                    = 0
[pid  6786] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6785] <... futex resumed>)        = 0
[pid  6785] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6786] open("./file0", O_RDONLY <unfinished ...>
[pid  6785] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6786] <... open resumed>)         = 4
[pid  6786] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6786] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[  180.042536][ T6786] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  180.056158][ T6786] BTRFS info (device loop0): checking UUID tree
[pid  6785] <... futex resumed>)        = 0
[pid  6785] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6786] <... futex resumed>)        = 0
[pid  6785] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6786] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  6786] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6786] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6785] <... futex resumed>)        = 0
[pid  6785] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6786] <... futex resumed>)        = 0
[pid  6786] 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}} <unfinished ...>
[pid  6785] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6785] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6785] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6785] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6785] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6785] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 6804 attached
 => {parent_tid=[260]}, 88) = 260
[pid  6804] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  6785] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6804] <... rseq resumed>)         = 0
[pid  6804] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6785] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6804] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6785] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6804] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6785] <... futex resumed>)        = 0
[pid  6804] open("./file0", O_RDONLY <unfinished ...>
[pid  6785] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6804] <... open resumed>)         = 5
[pid  6804] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6804] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6785] <... futex resumed>)        = 0
[pid  6785] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6804] <... futex resumed>)        = 0
[pid  6785] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[  180.128870][ T6786] BTRFS info (device loop0): balance: start -d -m
[  180.139052][ T6786] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  180.167805][ T6786] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6804] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  6785] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  6804] <... ioctl resumed>)        = 0
[pid  6804] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  180.337631][ T6786] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  180.362485][ T6786] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  6804] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6786] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6786] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6786] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6785] close(3)                    = 0
[pid  6785] close(4)                    = 0
[pid  6785] close(5)                    = 0
[pid  6785] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6785] close(7)                    = -1 EBADF (Bad file descriptor)
[  180.383063][ T6786] BTRFS info (device loop0): balance: ended with status: 0
[pid  6785] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6785] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6785] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6785] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6785] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6785] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6785] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6785] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6785] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6785] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6785] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6785] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6785] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6785] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6785] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6785] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6785] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6785] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6785] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6785] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6785] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6785] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6785] exit_group(0)               = ?
[pid  6786] <... futex resumed>)        = ?
[pid  6786] +++ exited with 0 +++
[pid  6804] <... futex resumed>)        = ?
[pid  6804] +++ exited with 0 +++
[pid  6785] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=258, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=42 /* 0.42 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./85", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./85", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./85/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./85/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./85/binderfs")     = 0
[pid  5073] umount2("./85/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./85/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./85/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./85/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./85/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./85/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./85")               = 0
[pid  5073] mkdir("./86", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6805 attached
, child_tidptr=0x5555570a9690) = 261
[pid  6805] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6805] chdir("./86")               = 0
[pid  6805] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6805] setpgid(0, 0)               = 0
[pid  6805] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6805] write(3, "1000", 4)         = 4
[pid  6805] close(3)                    = 0
[pid  6805] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6805] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6805] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6805] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6805] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6805] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6806 attached
 <unfinished ...>
[pid  6806] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  6805] <... clone3 resumed> => {parent_tid=[262]}, 88) = 262
[pid  6806] <... rseq resumed>)         = 0
[pid  6806] set_robust_list(0x7f8785c4c9a0, 24) = 0
[pid  6806] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6805] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6806] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6805] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6805] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6806] <... futex resumed>)        = 0
[pid  6805] <... futex resumed>)        = 1
[pid  6806] memfd_create("syzkaller", 0 <unfinished ...>
[pid  6805] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6806] <... memfd_create resumed>) = 3
[pid  6806] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6806] 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) = 16777216
[pid  6806] munmap(0x7f877d82c000, 138412032) = 0
[pid  6806] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6806] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6806] close(3)                    = 0
[pid  6806] mkdir("./file0", 0777)      = 0
[  181.050557][ T6806] loop0: detected capacity change from 0 to 32768
[  181.065400][ T6806] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6806)
[  181.082007][ T6806] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  181.091336][ T6806] BTRFS info (device loop0): force clearing of disk cache
[  181.098519][ T6806] BTRFS info (device loop0): setting nodatasum
[  181.104737][ T6806] BTRFS info (device loop0): allowing degraded mounts
[  181.111508][ T6806] BTRFS info (device loop0): enabling disk space caching
[  181.118586][ T6806] BTRFS info (device loop0): disk space caching is enabled
[  181.140409][ T6806] BTRFS info (device loop0): enabling ssd optimizations
[  181.147608][ T6806] BTRFS info (device loop0): auto enabling async discard
[  181.155798][ T6806] BTRFS info (device loop0): rebuilding free space tree
[  181.168549][ T6806] BTRFS info (device loop0): disabling free space tree
[  181.175495][ T6806] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  181.185171][ T6806] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  6806] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6806] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6806] chdir("./file0")            = 0
[pid  6806] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6806] close(4)                    = 0
[pid  6806] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6805] <... futex resumed>)        = 0
[  181.198259][ T6806] BTRFS info (device loop0): checking UUID tree
[pid  6806] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6805] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6806] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6805] <... futex resumed>)        = 0
[pid  6806] open("./file0", O_RDONLY <unfinished ...>
[pid  6805] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6806] <... open resumed>)         = 4
[pid  6806] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6805] <... futex resumed>)        = 0
[pid  6806] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  6805] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6806] <... ioctl resumed>)        = 0
[pid  6805] <... futex resumed>)        = 0
[pid  6805] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6806] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6806] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6805] <... futex resumed>)        = 0
[pid  6805] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6806] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6805] <... futex resumed>)        = 0
[pid  6806] 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}} <unfinished ...>
[pid  6805] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6805] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6805] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6805] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6805] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6805] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 6824 attached
 => {parent_tid=[263]}, 88) = 263
[pid  6824] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6805] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6805] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6805] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6824] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6824] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6824] open("./file0", O_RDONLY)   = 5
[  181.283422][ T6806] BTRFS info (device loop0): balance: start -d -m
[  181.294370][ T6806] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  181.319081][ T6806] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6824] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6805] <... futex resumed>)        = 0
[pid  6824] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  6805] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6805] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6805] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  6824] <... ioctl resumed>)        = 0
[pid  6824] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  181.468654][ T6806] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  181.493811][ T6806] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  6824] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6806] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6806] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6806] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6805] close(3)                    = 0
[pid  6805] close(4)                    = 0
[pid  6805] close(5)                    = 0
[pid  6805] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6805] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6805] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6805] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6805] close(10)                   = -1 EBADF (Bad file descriptor)
[  181.514004][ T6806] BTRFS info (device loop0): balance: ended with status: 0
[pid  6805] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6805] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6805] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6805] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6805] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6805] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6805] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6805] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6805] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6805] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6805] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6805] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6805] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6805] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6805] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6805] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6805] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6805] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6805] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6805] exit_group(0 <unfinished ...>
[pid  6824] <... futex resumed>)        = ?
[pid  6805] <... exit_group resumed>)   = ?
[pid  6824] +++ exited with 0 +++
[pid  6806] <... futex resumed>)        = ?
[pid  6806] +++ exited with 0 +++
[pid  6805] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=261, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=43 /* 0.43 s */} ---
[pid  5073] umount2("./86", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./86", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./86/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./86/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./86/binderfs")     = 0
[pid  5073] umount2("./86/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./86/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./86/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./86/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./86/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./86/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./86")               = 0
[pid  5073] mkdir("./87", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6825 attached
, child_tidptr=0x5555570a9690) = 264
[pid  6825] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6825] chdir("./87")               = 0
[pid  6825] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6825] setpgid(0, 0)               = 0
[pid  6825] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6825] write(3, "1000", 4)         = 4
[pid  6825] close(3)                    = 0
[pid  6825] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6825] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6825] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6825] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6825] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6825] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6826 attached
 <unfinished ...>
[pid  6826] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  6826] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6825] <... clone3 resumed> => {parent_tid=[265]}, 88) = 265
[pid  6826] <... set_robust_list resumed>) = 0
[pid  6825] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6826] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6825] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6826] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6825] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6826] memfd_create("syzkaller", 0 <unfinished ...>
[pid  6825] <... futex resumed>)        = 0
[pid  6825] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6826] <... memfd_create resumed>) = 3
[pid  6826] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6826] 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) = 16777216
[pid  6826] munmap(0x7f877d82c000, 138412032) = 0
[pid  6826] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6826] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6826] close(3)                    = 0
[pid  6826] mkdir("./file0", 0777)      = 0
[  182.179046][ T6826] loop0: detected capacity change from 0 to 32768
[  182.203038][ T6826] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6826)
[  182.219091][ T6826] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  182.228363][ T6826] BTRFS info (device loop0): force clearing of disk cache
[  182.235502][ T6826] BTRFS info (device loop0): setting nodatasum
[  182.241668][ T6826] BTRFS info (device loop0): allowing degraded mounts
[  182.248500][ T6826] BTRFS info (device loop0): enabling disk space caching
[  182.255556][ T6826] BTRFS info (device loop0): disk space caching is enabled
[  182.276639][ T6826] BTRFS info (device loop0): enabling ssd optimizations
[  182.283673][ T6826] BTRFS info (device loop0): auto enabling async discard
[  182.291918][ T6826] BTRFS info (device loop0): rebuilding free space tree
[  182.303755][ T6826] BTRFS info (device loop0): disabling free space tree
[  182.310715][ T6826] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  6826] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6826] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6826] chdir("./file0")            = 0
[pid  6826] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6826] close(4)                    = 0
[pid  6826] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6825] <... futex resumed>)        = 0
[pid  6825] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6826] open("./file0", O_RDONLY <unfinished ...>
[pid  6825] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6826] <... open resumed>)         = 4
[pid  6826] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6825] <... futex resumed>)        = 0
[pid  6825] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6825] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6826] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  6826] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6825] <... futex resumed>)        = 0
[pid  6825] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6826] 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}} <unfinished ...>
[  182.320408][ T6826] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  182.333648][ T6826] BTRFS info (device loop0): checking UUID tree
[pid  6825] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6825] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6825] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6825] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6825] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6825] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[266]}, 88) = 266
[pid  6825] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6825] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6825] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 6844 attached
 <unfinished ...>
[pid  6844] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6844] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6844] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6844] open("./file0", O_RDONLY)   = 5
[pid  6844] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6825] <... futex resumed>)        = 0
[pid  6844] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6825] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6844] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6825] <... futex resumed>)        = 0
[pid  6844] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  182.395010][ T6826] BTRFS info (device loop0): balance: start -d -m
[  182.403260][ T6826] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  182.431408][ T6826] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6825] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6844] <... ioctl resumed>)        = 0
[pid  6844] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  182.601140][ T6826] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  182.626250][ T6826] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  6844] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6826] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6826] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6826] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6825] close(3)                    = 0
[pid  6825] close(4)                    = 0
[pid  6825] close(5)                    = 0
[  182.645823][ T6826] BTRFS info (device loop0): balance: ended with status: 0
[pid  6825] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6825] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6825] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6825] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6825] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6825] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6825] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6825] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6825] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6825] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6825] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6825] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6825] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6825] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6825] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6825] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6825] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6825] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6825] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6825] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6825] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6825] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6825] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6825] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6825] exit_group(0 <unfinished ...>
[pid  6844] <... futex resumed>)        = ?
[pid  6825] <... exit_group resumed>)   = ?
[pid  6844] +++ exited with 0 +++
[pid  6826] <... futex resumed>)        = ?
[pid  6826] +++ exited with 0 +++
[pid  6825] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=264, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=42 /* 0.42 s */} ---
[pid  5073] umount2("./87", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./87", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./87/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./87/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./87/binderfs")     = 0
[pid  5073] umount2("./87/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./87/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./87/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./87/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./87/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./87/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./87")               = 0
[pid  5073] mkdir("./88", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6845 attached
 <unfinished ...>
[pid  6845] set_robust_list(0x5555570a96a0, 24 <unfinished ...>
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 267
[pid  6845] <... set_robust_list resumed>) = 0
[pid  6845] chdir("./88")               = 0
[pid  6845] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6845] setpgid(0, 0)               = 0
[pid  6845] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6845] write(3, "1000", 4)         = 4
[pid  6845] close(3)                    = 0
[pid  6845] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6845] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6845] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6845] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6845] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6845] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6846 attached
 <unfinished ...>
[pid  6846] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  6845] <... clone3 resumed> => {parent_tid=[268]}, 88) = 268
[pid  6846] <... rseq resumed>)         = 0
[pid  6845] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6846] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6845] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6846] <... set_robust_list resumed>) = 0
[pid  6845] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6846] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6845] <... futex resumed>)        = 0
[pid  6846] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6845] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6846] memfd_create("syzkaller", 0) = 3
[pid  6846] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6846] 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) = 16777216
[pid  6846] munmap(0x7f877d82c000, 138412032) = 0
[pid  6846] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6846] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6846] close(3)                    = 0
[pid  6846] mkdir("./file0", 0777)      = 0
[  183.249717][ T6846] loop0: detected capacity change from 0 to 32768
[  183.263541][ T6846] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6846)
[  183.281034][ T6846] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  183.290600][ T6846] BTRFS info (device loop0): force clearing of disk cache
[  183.297986][ T6846] BTRFS info (device loop0): setting nodatasum
[  183.304529][ T6846] BTRFS info (device loop0): allowing degraded mounts
[  183.311299][ T6846] BTRFS info (device loop0): enabling disk space caching
[  183.318355][ T6846] BTRFS info (device loop0): disk space caching is enabled
[  183.339668][ T6846] BTRFS info (device loop0): enabling ssd optimizations
[  183.346661][ T6846] BTRFS info (device loop0): auto enabling async discard
[  183.354726][ T6846] BTRFS info (device loop0): rebuilding free space tree
[  183.367383][ T6846] BTRFS info (device loop0): disabling free space tree
[  183.374518][ T6846] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  183.384619][ T6846] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  6846] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6846] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6846] chdir("./file0")            = 0
[pid  6846] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6846] close(4)                    = 0
[pid  6846] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6846] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6845] <... futex resumed>)        = 0
[  183.398049][ T6846] BTRFS info (device loop0): checking UUID tree
[pid  6845] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6845] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6846] <... futex resumed>)        = 0
[pid  6846] open("./file0", O_RDONLY)   = 4
[pid  6846] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6846] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6845] <... futex resumed>)        = 0
[pid  6845] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6846] <... futex resumed>)        = 0
[pid  6845] <... futex resumed>)        = 1
[pid  6846] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  6845] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6846] <... ioctl resumed>)        = 0
[pid  6846] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6845] <... futex resumed>)        = 0
[pid  6846] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6845] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6846] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6845] <... futex resumed>)        = 0
[pid  6846] 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}} <unfinished ...>
[pid  6845] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6845] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6845] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6845] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6845] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6845] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[269]}, 88) = 269
[pid  6845] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6845] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6845] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 6864 attached
 <unfinished ...>
[pid  6864] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6864] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6864] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6864] open("./file0", O_RDONLY)   = 5
[pid  6864] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6845] <... futex resumed>)        = 0
[pid  6864] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6845] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6864] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6845] <... futex resumed>)        = 0
[pid  6864] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  183.476702][ T6846] BTRFS info (device loop0): balance: start -d -m
[  183.486862][ T6846] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  183.511570][ T6846] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6845] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6845] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  6864] <... ioctl resumed>)        = 0
[pid  6864] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  183.670791][ T6846] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  183.696263][ T6846] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  6864] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6846] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6846] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6846] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6845] close(3)                    = 0
[pid  6845] close(4)                    = 0
[pid  6845] close(5)                    = 0
[pid  6845] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6845] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6845] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6845] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6845] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6845] close(11)                   = -1 EBADF (Bad file descriptor)
[  183.715586][ T6846] BTRFS info (device loop0): balance: ended with status: 0
[pid  6845] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6845] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6845] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6845] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6845] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6845] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6845] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6845] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6845] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6845] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6845] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6845] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6845] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6845] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6845] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6845] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6845] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6845] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6845] exit_group(0)               = ?
[pid  6864] <... futex resumed>)        = ?
[pid  6846] <... futex resumed>)        = ?
[pid  6864] +++ exited with 0 +++
[pid  6846] +++ exited with 0 +++
[pid  6845] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=267, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=43 /* 0.43 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./88", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./88", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./88/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./88/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./88/binderfs")     = 0
[pid  5073] umount2("./88/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./88/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./88/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./88/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./88/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./88/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./88")               = 0
[pid  5073] mkdir("./89", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6865 attached
, child_tidptr=0x5555570a9690) = 270
[pid  6865] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6865] chdir("./89")               = 0
[pid  6865] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6865] setpgid(0, 0)               = 0
[pid  6865] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6865] write(3, "1000", 4)         = 4
[pid  6865] close(3)                    = 0
[pid  6865] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6865] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6865] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6865] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6865] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6865] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6866 attached
 => {parent_tid=[271]}, 88) = 271
[pid  6866] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  6865] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6865] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6865] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6866] <... rseq resumed>)         = 0
[pid  6866] set_robust_list(0x7f8785c4c9a0, 24) = 0
[pid  6866] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6866] memfd_create("syzkaller", 0) = 3
[pid  6866] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6866] 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) = 16777216
[pid  6866] munmap(0x7f877d82c000, 138412032) = 0
[pid  6866] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6866] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6866] close(3)                    = 0
[pid  6866] mkdir("./file0", 0777)      = 0
[  184.316529][ T6866] loop0: detected capacity change from 0 to 32768
[  184.331378][ T6866] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6866)
[  184.346619][ T6866] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  184.355933][ T6866] BTRFS info (device loop0): force clearing of disk cache
[  184.363062][ T6866] BTRFS info (device loop0): setting nodatasum
[  184.369270][ T6866] BTRFS info (device loop0): allowing degraded mounts
[  184.376072][ T6866] BTRFS info (device loop0): enabling disk space caching
[  184.383095][ T6866] BTRFS info (device loop0): disk space caching is enabled
[  184.404587][ T6866] BTRFS info (device loop0): enabling ssd optimizations
[  184.411560][ T6866] BTRFS info (device loop0): auto enabling async discard
[  184.419722][ T6866] BTRFS info (device loop0): rebuilding free space tree
[  184.431870][ T6866] BTRFS info (device loop0): disabling free space tree
[  184.438883][ T6866] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  184.448563][ T6866] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  6866] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6866] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6866] chdir("./file0")            = 0
[pid  6866] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6866] close(4)                    = 0
[pid  6866] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6865] <... futex resumed>)        = 0
[  184.461895][ T6866] BTRFS info (device loop0): checking UUID tree
[pid  6866] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable)
[pid  6865] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6866] open("./file0", O_RDONLY <unfinished ...>
[pid  6865] <... futex resumed>)        = 0
[pid  6866] <... open resumed>)         = 4
[pid  6865] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6866] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6865] <... futex resumed>)        = 0
[pid  6865] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6866] <... futex resumed>)        = 1
[pid  6865] <... futex resumed>)        = 0
[pid  6866] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  6865] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6866] <... ioctl resumed>)        = 0
[pid  6866] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6865] <... futex resumed>)        = 0
[pid  6866] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable)
[pid  6865] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6865] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6866] 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}} <unfinished ...>
[pid  6865] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  6865] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6865] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6865] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6865] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6865] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[272]}, 88) = 272
[pid  6865] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6865] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6865] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 6884 attached
 <unfinished ...>
[pid  6884] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6884] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6884] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6884] open("./file0", O_RDONLY)   = 5
[pid  6884] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6865] <... futex resumed>)        = 0
[pid  6884] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6865] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6884] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6865] <... futex resumed>)        = 0
[pid  6884] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  184.573212][ T6866] BTRFS info (device loop0): balance: start -d -m
[  184.581401][ T6866] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  184.612220][ T6866] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6865] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6884] <... ioctl resumed>)        = 0
[pid  6884] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  184.735649][ T6866] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  184.761374][ T6866] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  6884] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6866] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6866] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6866] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6865] close(3)                    = 0
[pid  6865] close(4)                    = 0
[pid  6865] close(5)                    = 0
[pid  6865] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6865] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6865] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6865] close(9)                    = -1 EBADF (Bad file descriptor)
[  184.780711][ T6866] BTRFS info (device loop0): balance: ended with status: 0
[pid  6865] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6865] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6865] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6865] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6865] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6865] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6865] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6865] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6865] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6865] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6865] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6865] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6865] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6865] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6865] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6865] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6865] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6865] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6865] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6865] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6865] exit_group(0 <unfinished ...>
[pid  6884] <... futex resumed>)        = ?
[pid  6866] <... futex resumed>)        = ?
[pid  6865] <... exit_group resumed>)   = ?
[pid  6884] +++ exited with 0 +++
[pid  6866] +++ exited with 0 +++
[pid  6865] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=270, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=37 /* 0.37 s */} ---
[pid  5073] umount2("./89", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./89", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./89/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./89/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./89/binderfs")     = 0
[pid  5073] umount2("./89/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./89/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./89/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./89/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./89/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./89/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./89")               = 0
[pid  5073] mkdir("./90", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6885 attached
, child_tidptr=0x5555570a9690) = 273
[pid  6885] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6885] chdir("./90")               = 0
[pid  6885] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6885] setpgid(0, 0)               = 0
[pid  6885] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6885] write(3, "1000", 4)         = 4
[pid  6885] close(3)                    = 0
[pid  6885] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6885] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6885] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6885] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6885] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6885] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6886 attached
 <unfinished ...>
[pid  6886] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  6885] <... clone3 resumed> => {parent_tid=[274]}, 88) = 274
[pid  6886] <... rseq resumed>)         = 0
[pid  6885] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6886] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6885] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6886] <... set_robust_list resumed>) = 0
[pid  6886] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6885] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6886] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6885] <... futex resumed>)        = 0
[pid  6886] memfd_create("syzkaller", 0 <unfinished ...>
[pid  6885] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6886] <... memfd_create resumed>) = 3
[pid  6886] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6886] 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) = 16777216
[pid  6886] munmap(0x7f877d82c000, 138412032) = 0
[pid  6886] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6886] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6886] close(3)                    = 0
[pid  6886] mkdir("./file0", 0777)      = 0
[  185.382061][ T6886] loop0: detected capacity change from 0 to 32768
[  185.406300][ T6886] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6886)
[  185.423808][ T6886] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  185.433134][ T6886] BTRFS info (device loop0): force clearing of disk cache
[  185.440476][ T6886] BTRFS info (device loop0): setting nodatasum
[  185.446699][ T6886] BTRFS info (device loop0): allowing degraded mounts
[  185.453662][ T6886] BTRFS info (device loop0): enabling disk space caching
[  185.461228][ T6886] BTRFS info (device loop0): disk space caching is enabled
[  185.483120][ T6886] BTRFS info (device loop0): enabling ssd optimizations
[  185.490256][ T6886] BTRFS info (device loop0): auto enabling async discard
[  185.498769][ T6886] BTRFS info (device loop0): rebuilding free space tree
[  185.511742][ T6886] BTRFS info (device loop0): disabling free space tree
[  185.518832][ T6886] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  6886] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6886] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6886] chdir("./file0")            = 0
[pid  6886] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6886] close(4)                    = 0
[pid  6886] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6886] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6885] <... futex resumed>)        = 0
[pid  6885] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6886] <... futex resumed>)        = 0
[pid  6886] open("./file0", O_RDONLY <unfinished ...>
[pid  6885] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6886] <... open resumed>)         = 4
[pid  6886] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6885] <... futex resumed>)        = 0
[pid  6886] <... futex resumed>)        = 1
[pid  6885] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6886] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  6885] <... futex resumed>)        = 0
[pid  6886] <... ioctl resumed>)        = 0
[  185.528517][ T6886] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  185.541492][ T6886] BTRFS info (device loop0): checking UUID tree
[pid  6885] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6886] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6886] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6885] <... futex resumed>)        = 0
[pid  6885] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6886] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6885] <... futex resumed>)        = 0
[pid  6886] 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}} <unfinished ...>
[  185.617361][ T6886] BTRFS info (device loop0): balance: start -d -m
[  185.626478][ T6886] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  6885] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6885] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6885] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6885] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6885] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6885] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[275]}, 88) = 275
[pid  6885] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6885] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6885] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 6904 attached
 <unfinished ...>
[pid  6904] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6904] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6904] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6904] open("./file0", O_RDONLY)   = 5
[pid  6904] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6885] <... futex resumed>)        = 0
[pid  6904] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6885] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6904] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6885] <... futex resumed>)        = 0
[pid  6904] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  185.658590][ T6886] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6885] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6904] <... ioctl resumed>)        = 0
[pid  6904] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  185.799463][ T6886] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  185.823072][ T6886] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  6904] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6886] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6886] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6886] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6885] close(3)                    = 0
[pid  6885] close(4)                    = 0
[pid  6885] close(5)                    = 0
[pid  6885] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6885] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6885] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6885] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6885] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6885] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6885] close(12)                   = -1 EBADF (Bad file descriptor)
[  185.842954][ T6886] BTRFS info (device loop0): balance: ended with status: 0
[pid  6885] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6885] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6885] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6885] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6885] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6885] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6885] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6885] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6885] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6885] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6885] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6885] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6885] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6885] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6885] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6885] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6885] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6885] exit_group(0)               = ?
[pid  6904] <... futex resumed>)        = ?
[pid  6886] <... futex resumed>)        = ?
[pid  6904] +++ exited with 0 +++
[pid  6886] +++ exited with 0 +++
[pid  6885] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=273, si_uid=0, si_status=0, si_utime=0, si_stime=45 /* 0.45 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./90", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./90", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./90/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./90/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./90/binderfs")     = 0
[pid  5073] umount2("./90/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./90/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./90/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./90/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./90/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./90/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./90")               = 0
[pid  5073] mkdir("./91", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6905 attached
, child_tidptr=0x5555570a9690) = 276
[pid  6905] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6905] chdir("./91")               = 0
[pid  6905] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6905] setpgid(0, 0)               = 0
[pid  6905] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6905] write(3, "1000", 4)         = 4
[pid  6905] close(3)                    = 0
[pid  6905] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6905] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6905] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6905] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6905] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6905] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6906 attached
 <unfinished ...>
[pid  6906] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  6905] <... clone3 resumed> => {parent_tid=[277]}, 88) = 277
[pid  6906] <... rseq resumed>)         = 0
[pid  6905] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6906] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6905] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6906] <... set_robust_list resumed>) = 0
[pid  6905] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6906] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6905] <... futex resumed>)        = 0
[pid  6906] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6905] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6906] memfd_create("syzkaller", 0) = 3
[pid  6906] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6906] 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) = 16777216
[pid  6906] munmap(0x7f877d82c000, 138412032) = 0
[pid  6906] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6906] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6906] close(3)                    = 0
[pid  6906] mkdir("./file0", 0777)      = 0
[  186.418982][ T6906] loop0: detected capacity change from 0 to 32768
[  186.432852][ T6906] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6906)
[  186.448891][ T6906] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  186.458230][ T6906] BTRFS info (device loop0): force clearing of disk cache
[  186.465406][ T6906] BTRFS info (device loop0): setting nodatasum
[  186.471589][ T6906] BTRFS info (device loop0): allowing degraded mounts
[  186.478404][ T6906] BTRFS info (device loop0): enabling disk space caching
[  186.485469][ T6906] BTRFS info (device loop0): disk space caching is enabled
[  186.509507][ T6906] BTRFS info (device loop0): enabling ssd optimizations
[  186.516565][ T6906] BTRFS info (device loop0): auto enabling async discard
[  186.524601][ T6906] BTRFS info (device loop0): rebuilding free space tree
[  186.536639][ T6906] BTRFS info (device loop0): disabling free space tree
[  186.543521][ T6906] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  6906] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6906] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6906] chdir("./file0")            = 0
[pid  6906] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6906] close(4)                    = 0
[pid  6906] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6905] <... futex resumed>)        = 0
[pid  6905] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6906] <... futex resumed>)        = 1
[pid  6905] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6906] open("./file0", O_RDONLY)   = 4
[pid  6906] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6905] <... futex resumed>)        = 0
[pid  6906] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  6905] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6906] <... ioctl resumed>)        = 0
[pid  6905] <... futex resumed>)        = 0
[pid  6905] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6906] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6905] <... futex resumed>)        = 0
[pid  6906] <... futex resumed>)        = 1
[pid  6905] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6906] 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}} <unfinished ...>
[pid  6905] <... futex resumed>)        = 0
[  186.553229][ T6906] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  186.566351][ T6906] BTRFS info (device loop0): checking UUID tree
[pid  6905] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6905] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6905] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6905] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6905] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6905] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 6924 attached
 <unfinished ...>
[pid  6924] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6924] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  6905] <... clone3 resumed> => {parent_tid=[278]}, 88) = 278
[pid  6924] <... set_robust_list resumed>) = 0
[pid  6905] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6924] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6905] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6905] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6924] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6905] <... futex resumed>)        = 0
[pid  6924] open("./file0", O_RDONLY <unfinished ...>
[pid  6905] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6924] <... open resumed>)         = 5
[pid  6924] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6924] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6905] <... futex resumed>)        = 0
[pid  6905] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6924] <... futex resumed>)        = 0
[pid  6905] <... futex resumed>)        = 1
[pid  6924] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  186.603746][ T6906] BTRFS info (device loop0): balance: start -d -m
[  186.613393][ T6906] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  186.637134][ T6906] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6905] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[  186.725403][ T6906] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  6924] <... ioctl resumed>)        = 0
[pid  6924] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6924] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6906] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6906] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6906] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6905] close(3)                    = 0
[pid  6905] close(4)                    = 0
[pid  6905] close(5)                    = 0
[pid  6905] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6905] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6905] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6905] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6905] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6905] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6905] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6905] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6905] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6905] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6905] close(16)                   = -1 EBADF (Bad file descriptor)
[  186.840300][ T6906] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  186.860925][ T6906] BTRFS info (device loop0): balance: ended with status: 0
[pid  6905] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6905] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6905] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6905] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6905] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6905] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6905] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6905] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6905] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6905] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6905] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6905] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6905] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6905] exit_group(0 <unfinished ...>
[pid  6924] <... futex resumed>)        = ?
[pid  6924] +++ exited with 0 +++
[pid  6906] <... futex resumed>)        = ?
[pid  6905] <... exit_group resumed>)   = ?
[pid  6906] +++ exited with 0 +++
[pid  6905] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=276, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=36 /* 0.36 s */} ---
[pid  5073] umount2("./91", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./91", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./91/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./91/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./91/binderfs")     = 0
[pid  5073] umount2("./91/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./91/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./91/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./91/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./91/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./91/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./91")               = 0
[pid  5073] mkdir("./92", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6925 attached
 <unfinished ...>
[pid  6925] set_robust_list(0x5555570a96a0, 24 <unfinished ...>
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 279
[pid  6925] <... set_robust_list resumed>) = 0
[pid  6925] chdir("./92")               = 0
[pid  6925] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6925] setpgid(0, 0)               = 0
[pid  6925] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6925] write(3, "1000", 4)         = 4
[pid  6925] close(3)                    = 0
[pid  6925] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6925] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6925] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6925] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6925] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6925] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6926 attached
 => {parent_tid=[280]}, 88) = 280
[pid  6926] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  6926] set_robust_list(0x7f8785c4c9a0, 24) = 0
[pid  6925] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6926] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6926] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6925] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6925] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6926] <... futex resumed>)        = 0
[pid  6925] <... futex resumed>)        = 1
[pid  6925] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6926] memfd_create("syzkaller", 0) = 3
[pid  6926] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6926] 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) = 16777216
[pid  6926] munmap(0x7f877d82c000, 138412032) = 0
[pid  6926] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6926] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6926] close(3)                    = 0
[pid  6926] mkdir("./file0", 0777)      = 0
[  187.495749][ T6926] loop0: detected capacity change from 0 to 32768
[  187.510295][ T6926] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6926)
[  187.528722][ T6926] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  187.538034][ T6926] BTRFS info (device loop0): force clearing of disk cache
[  187.545197][ T6926] BTRFS info (device loop0): setting nodatasum
[  187.551360][ T6926] BTRFS info (device loop0): allowing degraded mounts
[  187.558177][ T6926] BTRFS info (device loop0): enabling disk space caching
[  187.565224][ T6926] BTRFS info (device loop0): disk space caching is enabled
[  187.586484][ T6926] BTRFS info (device loop0): enabling ssd optimizations
[  187.593447][ T6926] BTRFS info (device loop0): auto enabling async discard
[  187.601994][ T6926] BTRFS info (device loop0): rebuilding free space tree
[  187.613827][ T6926] BTRFS info (device loop0): disabling free space tree
[  187.620841][ T6926] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  187.630523][ T6926] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  6926] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6926] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6926] chdir("./file0")            = 0
[pid  6926] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6926] close(4)                    = 0
[  187.644233][ T6926] BTRFS info (device loop0): checking UUID tree
[pid  6926] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6925] <... futex resumed>)        = 0
[pid  6926] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6925] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6926] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6926] open("./file0", O_RDONLY <unfinished ...>
[pid  6925] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6926] <... open resumed>)         = 4
[pid  6926] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6925] <... futex resumed>)        = 0
[pid  6926] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6925] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6926] <... futex resumed>)        = 0
[pid  6925] <... futex resumed>)        = 1
[pid  6926] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  6926] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6925] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6926] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6925] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6925] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6926] <... futex resumed>)        = 0
[pid  6925] <... futex resumed>)        = 1
[pid  6926] 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}} <unfinished ...>
[pid  6925] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6925] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6925] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6925] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6925] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6925] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 6944 attached
 => {parent_tid=[281]}, 88) = 281
[pid  6925] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6925] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6925] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6944] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[  187.736042][ T6926] BTRFS info (device loop0): balance: start -d -m
[  187.745689][ T6926] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  187.774263][ T6926] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6944] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6944] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6944] open("./file0", O_RDONLY)   = 5
[pid  6944] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6944] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6925] <... futex resumed>)        = 0
[pid  6925] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6925] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6944] <... futex resumed>)        = 0
[pid  6944] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  6925] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[  187.830892][ T6926] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  6944] <... ioctl resumed>)        = 0
[pid  6944] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6944] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6926] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6926] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6925] close(3)                    = 0
[pid  6926] <... futex resumed>)        = 0
[pid  6926] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6925] close(4)                    = 0
[pid  6925] close(5)                    = 0
[pid  6925] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6925] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6925] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6925] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6925] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6925] close(11)                   = -1 EBADF (Bad file descriptor)
[  187.942905][ T6926] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  187.962719][ T6926] BTRFS info (device loop0): balance: ended with status: 0
[pid  6925] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6925] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6925] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6925] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6925] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6925] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6925] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6925] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6925] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6925] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6925] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6925] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6925] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6925] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6925] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6925] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6925] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6925] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6925] exit_group(0)               = ?
[pid  6926] <... futex resumed>)        = ?
[pid  6944] <... futex resumed>)        = ?
[pid  6926] +++ exited with 0 +++
[pid  6944] +++ exited with 0 +++
[pid  6925] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=279, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=44 /* 0.44 s */} ---
[pid  5073] umount2("./92", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./92", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./92/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./92/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./92/binderfs")     = 0
[pid  5073] umount2("./92/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./92/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./92/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./92/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./92/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./92/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./92")               = 0
[pid  5073] mkdir("./93", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6945 attached
, child_tidptr=0x5555570a9690) = 282
[pid  6945] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6945] chdir("./93")               = 0
[pid  6945] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6945] setpgid(0, 0)               = 0
[pid  6945] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6945] write(3, "1000", 4)         = 4
[pid  6945] close(3)                    = 0
[pid  6945] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6945] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6945] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6945] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6945] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6945] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6946 attached
 => {parent_tid=[283]}, 88) = 283
[pid  6946] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  6945] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6945] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6945] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6946] <... rseq resumed>)         = 0
[pid  6946] set_robust_list(0x7f8785c4c9a0, 24) = 0
[pid  6946] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6946] memfd_create("syzkaller", 0) = 3
[pid  6946] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6946] 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) = 16777216
[pid  6946] munmap(0x7f877d82c000, 138412032) = 0
[pid  6946] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6946] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6946] close(3)                    = 0
[pid  6946] mkdir("./file0", 0777)      = 0
[  188.510466][ T6946] loop0: detected capacity change from 0 to 32768
[  188.527126][ T6946] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6946)
[  188.543058][ T6946] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  188.552455][ T6946] BTRFS info (device loop0): force clearing of disk cache
[  188.559612][ T6946] BTRFS info (device loop0): setting nodatasum
[  188.565838][ T6946] BTRFS info (device loop0): allowing degraded mounts
[  188.572616][ T6946] BTRFS info (device loop0): enabling disk space caching
[  188.579998][ T6946] BTRFS info (device loop0): disk space caching is enabled
[  188.601506][ T6946] BTRFS info (device loop0): enabling ssd optimizations
[  188.608609][ T6946] BTRFS info (device loop0): auto enabling async discard
[  188.616661][ T6946] BTRFS info (device loop0): rebuilding free space tree
[  188.629334][ T6946] BTRFS info (device loop0): disabling free space tree
[  188.636424][ T6946] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  188.646120][ T6946] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  6946] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6946] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6946] chdir("./file0")            = 0
[pid  6946] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6946] close(4)                    = 0
[pid  6946] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6946] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6945] <... futex resumed>)        = 0
[  188.659416][ T6946] BTRFS info (device loop0): checking UUID tree
[pid  6945] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6946] <... futex resumed>)        = 0
[pid  6945] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6946] open("./file0", O_RDONLY)   = 4
[pid  6946] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6945] <... futex resumed>)        = 0
[pid  6945] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6946] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  6945] <... futex resumed>)        = 0
[pid  6945] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6946] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6945] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6946] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6945] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6946] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6946] 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}} <unfinished ...>
[pid  6945] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6945] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6945] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6945] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6945] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6945] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[284]}, 88) = 284
./strace-static-x86_64: Process 6964 attached
[pid  6964] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6945] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6964] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  6945] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6964] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6945] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6964] open("./file0", O_RDONLY)   = 5
[pid  6945] <... futex resumed>)        = 0
[pid  6964] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6945] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6964] <... futex resumed>)        = 0
[pid  6945] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6945] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6945] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[  188.733444][ T6946] BTRFS info (device loop0): balance: start -d -m
[  188.745289][ T6946] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  188.772487][ T6946] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6964] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  6945] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  6945] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  6964] <... ioctl resumed>)        = 0
[pid  6964] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  188.870780][ T6946] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  6964] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6946] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6946] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6945] close(3 <unfinished ...>
[pid  6946] <... futex resumed>)        = 0
[pid  6945] <... close resumed>)        = 0
[pid  6946] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6945] close(4)                    = 0
[pid  6945] close(5)                    = 0
[pid  6945] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6945] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6945] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6945] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6945] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6945] close(11)                   = -1 EBADF (Bad file descriptor)
[  188.939707][ T6946] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  188.959079][ T6946] BTRFS info (device loop0): balance: ended with status: 0
[pid  6945] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6945] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6945] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6945] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6945] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6945] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6945] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6945] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6945] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6945] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6945] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6945] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6945] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6945] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6945] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6945] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6945] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6945] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6945] exit_group(0 <unfinished ...>
[pid  6946] <... futex resumed>)        = ?
[pid  6964] <... futex resumed>)        = ?
[pid  6945] <... exit_group resumed>)   = ?
[pid  6964] +++ exited with 0 +++
[pid  6946] +++ exited with 0 +++
[pid  6945] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=282, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=44 /* 0.44 s */} ---
[pid  5073] umount2("./93", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./93", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./93/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./93/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./93/binderfs")     = 0
[pid  5073] umount2("./93/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./93/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./93/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./93/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./93/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./93/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./93")               = 0
[pid  5073] mkdir("./94", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6965 attached
, child_tidptr=0x5555570a9690) = 285
[pid  6965] set_robust_list(0x5555570a96a0, 24) = 0
[pid  6965] chdir("./94")               = 0
[pid  6965] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6965] setpgid(0, 0)               = 0
[pid  6965] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6965] write(3, "1000", 4)         = 4
[pid  6965] close(3)                    = 0
[pid  6965] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6965] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6965] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6965] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6965] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6965] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6966 attached
 <unfinished ...>
[pid  6966] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  6965] <... clone3 resumed> => {parent_tid=[286]}, 88) = 286
[pid  6966] <... rseq resumed>)         = 0
[pid  6965] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6966] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6965] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6966] <... set_robust_list resumed>) = 0
[pid  6965] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6966] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6965] <... futex resumed>)        = 0
[pid  6966] memfd_create("syzkaller", 0 <unfinished ...>
[pid  6965] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6966] <... memfd_create resumed>) = 3
[pid  6966] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6966] 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) = 16777216
[pid  6966] munmap(0x7f877d82c000, 138412032) = 0
[pid  6966] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6966] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6966] close(3)                    = 0
[pid  6966] mkdir("./file0", 0777)      = 0
[  189.616918][ T6966] loop0: detected capacity change from 0 to 32768
[  189.641004][ T6966] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6966)
[  189.657543][ T6966] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  189.666816][ T6966] BTRFS info (device loop0): force clearing of disk cache
[  189.673982][ T6966] BTRFS info (device loop0): setting nodatasum
[  189.680150][ T6966] BTRFS info (device loop0): allowing degraded mounts
[  189.686962][ T6966] BTRFS info (device loop0): enabling disk space caching
[  189.694050][ T6966] BTRFS info (device loop0): disk space caching is enabled
[  189.715708][ T6966] BTRFS info (device loop0): enabling ssd optimizations
[  189.722852][ T6966] BTRFS info (device loop0): auto enabling async discard
[  189.731060][ T6966] BTRFS info (device loop0): rebuilding free space tree
[  189.743324][ T6966] BTRFS info (device loop0): disabling free space tree
[  189.750300][ T6966] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  6966] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6966] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6966] chdir("./file0")            = 0
[pid  6966] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6966] close(4)                    = 0
[pid  6966] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6965] <... futex resumed>)        = 0
[pid  6966] open("./file0", O_RDONLY <unfinished ...>
[pid  6965] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6965] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6966] <... open resumed>)         = 4
[pid  6966] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6965] <... futex resumed>)        = 0
[pid  6965] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6966] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  6965] <... futex resumed>)        = 0
[pid  6966] <... ioctl resumed>)        = 0
[pid  6965] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[  189.759981][ T6966] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  189.773417][ T6966] BTRFS info (device loop0): checking UUID tree
[pid  6966] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6965] <... futex resumed>)        = 0
[pid  6965] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6966] 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}} <unfinished ...>
[pid  6965] <... futex resumed>)        = 0
[pid  6965] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6965] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  6965] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6965] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6965] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6965] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6965] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[287]}, 88) = 287
[pid  6965] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6965] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 6984 attached
) = 0
[pid  6984] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  6984] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  6965] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6984] <... set_robust_list resumed>) = 0
[pid  6984] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6984] open("./file0", O_RDONLY)   = 5
[pid  6984] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6965] <... futex resumed>)        = 0
[pid  6984] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[  189.832710][ T6966] BTRFS info (device loop0): balance: start -d -m
[  189.842565][ T6966] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  189.867555][ T6966] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  6965] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6984] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6965] <... futex resumed>)        = 0
[pid  6984] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  6965] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[  189.967000][ T6966] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  6984] <... ioctl resumed>)        = 0
[pid  6984] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6984] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6966] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6966] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6966] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6965] close(3)                    = 0
[pid  6965] close(4)                    = 0
[pid  6965] close(5)                    = 0
[pid  6965] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6965] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6965] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6965] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6965] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  6965] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6965] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6965] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6965] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6965] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6965] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6965] close(17)                   = -1 EBADF (Bad file descriptor)
[  190.067086][ T6966] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  190.086594][ T6966] BTRFS info (device loop0): balance: ended with status: 0
[pid  6965] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6965] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6965] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6965] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6965] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6965] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6965] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6965] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6965] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6965] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6965] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6965] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6965] exit_group(0 <unfinished ...>
[pid  6984] <... futex resumed>)        = ?
[pid  6966] <... futex resumed>)        = ?
[pid  6965] <... exit_group resumed>)   = ?
[pid  6984] +++ exited with 0 +++
[pid  6966] +++ exited with 0 +++
[pid  6965] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=285, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=42 /* 0.42 s */} ---
[pid  5073] umount2("./94", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./94", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./94/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./94/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./94/binderfs")     = 0
[pid  5073] umount2("./94/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./94/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./94/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./94/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./94/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./94/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./94")               = 0
[pid  5073] mkdir("./95", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 6985 attached
 <unfinished ...>
[pid  6985] set_robust_list(0x5555570a96a0, 24 <unfinished ...>
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 288
[pid  6985] <... set_robust_list resumed>) = 0
[pid  6985] chdir("./95")               = 0
[pid  6985] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  6985] setpgid(0, 0)               = 0
[pid  6985] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  6985] write(3, "1000", 4)         = 4
[pid  6985] close(3)                    = 0
[pid  6985] symlink("/dev/binderfs", "./binderfs") = 0
[pid  6985] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6985] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  6985] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6985] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6985] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 6986 attached
 <unfinished ...>
[pid  6986] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  6986] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  6985] <... clone3 resumed> => {parent_tid=[289]}, 88) = 289
[pid  6986] <... set_robust_list resumed>) = 0
[pid  6985] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6986] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  6985] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6986] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  6985] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6986] memfd_create("syzkaller", 0 <unfinished ...>
[pid  6985] <... futex resumed>)        = 0
[pid  6985] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  6986] <... memfd_create resumed>) = 3
[pid  6986] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  6986] 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) = 16777216
[pid  6986] munmap(0x7f877d82c000, 138412032) = 0
[pid  6986] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  6986] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  6986] close(3)                    = 0
[pid  6986] mkdir("./file0", 0777)      = 0
[  190.679342][ T6986] loop0: detected capacity change from 0 to 32768
[  190.693645][ T6986] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (6986)
[  190.708916][ T6986] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  190.718212][ T6986] BTRFS info (device loop0): force clearing of disk cache
[  190.725381][ T6986] BTRFS info (device loop0): setting nodatasum
[  190.731539][ T6986] BTRFS info (device loop0): allowing degraded mounts
[  190.738337][ T6986] BTRFS info (device loop0): enabling disk space caching
[  190.745399][ T6986] BTRFS info (device loop0): disk space caching is enabled
[  190.767543][ T6986] BTRFS info (device loop0): enabling ssd optimizations
[  190.774554][ T6986] BTRFS info (device loop0): auto enabling async discard
[  190.782361][ T6986] BTRFS info (device loop0): rebuilding free space tree
[  190.794481][ T6986] BTRFS info (device loop0): disabling free space tree
[  190.801394][ T6986] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  190.811395][ T6986] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  6986] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  6986] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  6986] chdir("./file0")            = 0
[pid  6986] ioctl(4, LOOP_CLR_FD)       = 0
[pid  6986] close(4)                    = 0
[pid  6986] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6985] <... futex resumed>)        = 0
[pid  6985] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6986] <... futex resumed>)        = 1
[pid  6985] <... futex resumed>)        = 0
[pid  6986] open("./file0", O_RDONLY <unfinished ...>
[pid  6985] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6986] <... open resumed>)         = 4
[pid  6986] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6985] <... futex resumed>)        = 0
[pid  6986] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6985] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6986] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6985] <... futex resumed>)        = 0
[pid  6986] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  6985] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  6986] <... ioctl resumed>)        = 0
[  190.825073][ T6986] BTRFS info (device loop0): checking UUID tree
[pid  6986] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6985] <... futex resumed>)        = 0
[pid  6986] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6985] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  6986] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  6985] <... futex resumed>)        = 0
[pid  6986] 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}} <unfinished ...>
[  190.885879][ T6986] BTRFS info (device loop0): balance: start -d -m
[  190.897915][ T6986] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  6985] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  6985] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6985] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  6985] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  6985] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  6985] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[290]}, 88) = 290
[pid  6985] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  6985] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6985] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 7004 attached
 <unfinished ...>
[pid  7004] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  7004] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  7004] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7004] open("./file0", O_RDONLY)   = 5
[pid  7004] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  6985] <... futex resumed>)        = 0
[pid  6985] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6985] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[  190.928961][ T6986] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7004] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  6985] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  7004] <... ioctl resumed>)        = 0
[pid  7004] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  191.099015][ T6986] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  191.125180][ T6986] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  7004] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6986] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  6986] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  6986] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  6985] close(3)                    = 0
[pid  6985] close(4)                    = 0
[pid  6985] close(5)                    = 0
[pid  6985] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  6985] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  6985] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  6985] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  6985] close(10)                   = -1 EBADF (Bad file descriptor)
[  191.144954][ T6986] BTRFS info (device loop0): balance: ended with status: 0
[pid  6985] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  6985] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  6985] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  6985] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  6985] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  6985] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  6985] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  6985] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  6985] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  6985] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  6985] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  6985] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  6985] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  6985] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  6985] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  6985] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  6985] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  6985] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  6985] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  6985] exit_group(0 <unfinished ...>
[pid  7004] <... futex resumed>)        = ?
[pid  6986] <... futex resumed>)        = ?
[pid  6985] <... exit_group resumed>)   = ?
[pid  7004] +++ exited with 0 +++
[pid  6986] +++ exited with 0 +++
[pid  6985] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=288, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=46 /* 0.46 s */} ---
[pid  5073] umount2("./95", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./95", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./95/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./95/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./95/binderfs")     = 0
[pid  5073] umount2("./95/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./95/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./95/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./95/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./95/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./95/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./95")               = 0
[pid  5073] mkdir("./96", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7005 attached
, child_tidptr=0x5555570a9690) = 291
[pid  7005] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7005] chdir("./96")               = 0
[pid  7005] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7005] setpgid(0, 0)               = 0
[pid  7005] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7005] write(3, "1000", 4)         = 4
[pid  7005] close(3)                    = 0
[pid  7005] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7005] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7005] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7005] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7005] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7005] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7006 attached
 <unfinished ...>
[pid  7006] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7005] <... clone3 resumed> => {parent_tid=[292]}, 88) = 292
[pid  7006] <... rseq resumed>)         = 0
[pid  7005] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7006] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7005] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7006] <... set_robust_list resumed>) = 0
[pid  7006] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7005] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7006] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7005] <... futex resumed>)        = 0
[pid  7006] memfd_create("syzkaller", 0 <unfinished ...>
[pid  7005] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7006] <... memfd_create resumed>) = 3
[pid  7006] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7006] 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) = 16777216
[pid  7006] munmap(0x7f877d82c000, 138412032) = 0
[pid  7006] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7006] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7006] close(3)                    = 0
[pid  7006] mkdir("./file0", 0777)      = 0
[  191.745771][ T7006] loop0: detected capacity change from 0 to 32768
[  191.767560][ T7006] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7006)
[  191.783346][ T7006] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  191.792634][ T7006] BTRFS info (device loop0): force clearing of disk cache
[  191.799802][ T7006] BTRFS info (device loop0): setting nodatasum
[  191.806013][ T7006] BTRFS info (device loop0): allowing degraded mounts
[  191.812774][ T7006] BTRFS info (device loop0): enabling disk space caching
[  191.819821][ T7006] BTRFS info (device loop0): disk space caching is enabled
[  191.843138][ T7006] BTRFS info (device loop0): enabling ssd optimizations
[  191.850149][ T7006] BTRFS info (device loop0): auto enabling async discard
[  191.858655][ T7006] BTRFS info (device loop0): rebuilding free space tree
[  191.870342][ T7006] BTRFS info (device loop0): disabling free space tree
[  191.877348][ T7006] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  7006] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7006] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7006] chdir("./file0")            = 0
[pid  7006] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7006] close(4)                    = 0
[pid  7006] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7005] <... futex resumed>)        = 0
[pid  7006] <... futex resumed>)        = 1
[pid  7005] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7006] open("./file0", O_RDONLY <unfinished ...>
[pid  7005] <... futex resumed>)        = 0
[pid  7005] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7006] <... open resumed>)         = 4
[pid  7006] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[  191.887014][ T7006] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  191.900118][ T7006] BTRFS info (device loop0): checking UUID tree
[pid  7006] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7005] <... futex resumed>)        = 0
[pid  7005] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7006] <... futex resumed>)        = 0
[pid  7005] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7006] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  7006] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7005] <... futex resumed>)        = 0
[pid  7005] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7005] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[  191.988725][ T7006] BTRFS info (device loop0): balance: start -d -m
[  191.997607][ T7006] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  7006] 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}} <unfinished ...>
[pid  7005] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  7005] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7005] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7005] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7005] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7005] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 7024 attached
 <unfinished ...>
[pid  7024] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7005] <... clone3 resumed> => {parent_tid=[293]}, 88) = 293
[pid  7024] <... rseq resumed>)         = 0
[pid  7024] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  7005] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7024] <... set_robust_list resumed>) = 0
[pid  7024] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7005] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7024] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7005] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7005] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7024] open("./file0", O_RDONLY)   = 5
[pid  7024] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7005] <... futex resumed>)        = 0
[pid  7005] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7024] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  7005] <... futex resumed>)        = 0
[  192.029121][ T7006] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7005] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7024] <... ioctl resumed>)        = 0
[pid  7024] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  192.186091][ T7006] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  192.211331][ T7006] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  7024] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7006] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7006] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7006] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7005] close(3)                    = 0
[pid  7005] close(4)                    = 0
[pid  7005] close(5)                    = 0
[pid  7005] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7005] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7005] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7005] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7005] close(10)                   = -1 EBADF (Bad file descriptor)
[  192.231303][ T7006] BTRFS info (device loop0): balance: ended with status: 0
[pid  7005] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7005] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7005] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7005] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7005] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7005] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7005] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7005] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7005] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7005] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7005] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7005] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7005] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7005] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7005] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7005] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7005] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7005] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7005] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7005] exit_group(0 <unfinished ...>
[pid  7024] <... futex resumed>)        = ?
[pid  7005] <... exit_group resumed>)   = ?
[pid  7024] +++ exited with 0 +++
[pid  7006] <... futex resumed>)        = ?
[pid  7006] +++ exited with 0 +++
[pid  7005] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=291, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=38 /* 0.38 s */} ---
[pid  5073] umount2("./96", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./96", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./96/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./96/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./96/binderfs")     = 0
[pid  5073] umount2("./96/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./96/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./96/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./96/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./96/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./96/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./96")               = 0
[pid  5073] mkdir("./97", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7025 attached
 <unfinished ...>
[pid  7025] set_robust_list(0x5555570a96a0, 24 <unfinished ...>
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 294
[pid  7025] <... set_robust_list resumed>) = 0
[pid  7025] chdir("./97")               = 0
[pid  7025] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7025] setpgid(0, 0)               = 0
[pid  7025] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7025] write(3, "1000", 4)         = 4
[pid  7025] close(3)                    = 0
[pid  7025] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7025] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7025] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7025] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7025] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7025] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7026 attached
 <unfinished ...>
[pid  7026] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  7025] <... clone3 resumed> => {parent_tid=[295]}, 88) = 295
[pid  7026] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7025] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7026] <... set_robust_list resumed>) = 0
[pid  7025] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7026] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7025] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7026] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7025] <... futex resumed>)        = 0
[pid  7026] memfd_create("syzkaller", 0 <unfinished ...>
[pid  7025] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7026] <... memfd_create resumed>) = 3
[pid  7026] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7026] 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) = 16777216
[pid  7026] munmap(0x7f877d82c000, 138412032) = 0
[pid  7026] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7026] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7026] close(3)                    = 0
[pid  7026] mkdir("./file0", 0777)      = 0
[  192.813925][ T7026] loop0: detected capacity change from 0 to 32768
[  192.827857][ T7026] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7026)
[  192.844652][ T7026] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  192.853938][ T7026] BTRFS info (device loop0): force clearing of disk cache
[  192.861059][ T7026] BTRFS info (device loop0): setting nodatasum
[  192.867321][ T7026] BTRFS info (device loop0): allowing degraded mounts
[  192.874193][ T7026] BTRFS info (device loop0): enabling disk space caching
[  192.881224][ T7026] BTRFS info (device loop0): disk space caching is enabled
[  192.903070][ T7026] BTRFS info (device loop0): enabling ssd optimizations
[  192.910071][ T7026] BTRFS info (device loop0): auto enabling async discard
[  192.918181][ T7026] BTRFS info (device loop0): rebuilding free space tree
[  192.930167][ T7026] BTRFS info (device loop0): disabling free space tree
[  192.937175][ T7026] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  192.946839][ T7026] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  7026] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7026] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7026] chdir("./file0")            = 0
[pid  7026] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7026] close(4)                    = 0
[pid  7026] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7026] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7025] <... futex resumed>)        = 0
[pid  7025] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7026] <... futex resumed>)        = 0
[pid  7025] <... futex resumed>)        = 1
[pid  7026] open("./file0", O_RDONLY <unfinished ...>
[pid  7025] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7026] <... open resumed>)         = 4
[pid  7026] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7025] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7025] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7026] <... futex resumed>)        = 0
[pid  7025] <... futex resumed>)        = 0
[pid  7026] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  7025] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7026] <... ioctl resumed>)        = 0
[pid  7026] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7025] <... futex resumed>)        = 0
[pid  7026] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7025] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7026] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7025] <... futex resumed>)        = 0
[  192.960334][ T7026] BTRFS info (device loop0): checking UUID tree
[pid  7025] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7026] 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}} <unfinished ...>
[pid  7025] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  7025] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7025] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7025] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7025] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7025] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[296]}, 88) = 296
[pid  7025] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7025] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7025] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 7044 attached
 <unfinished ...>
[pid  7044] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  7044] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  7044] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7044] open("./file0", O_RDONLY)   = 5
[pid  7044] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7044] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7025] <... futex resumed>)        = 0
[pid  7025] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7044] <... futex resumed>)        = 0
[pid  7025] <... futex resumed>)        = 1
[pid  7025] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[  193.019421][ T7026] BTRFS info (device loop0): balance: start -d -m
[  193.029728][ T7026] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  193.053370][ T7026] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7044] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  7025] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  7044] <... ioctl resumed>)        = 0
[pid  7044] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  193.217880][ T7026] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  193.241463][ T7026] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  7044] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7026] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7026] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7025] close(3 <unfinished ...>
[pid  7026] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7025] <... close resumed>)        = 0
[pid  7025] close(4)                    = 0
[pid  7025] close(5)                    = 0
[pid  7025] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7025] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7025] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7025] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7025] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7025] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7025] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7025] close(13)                   = -1 EBADF (Bad file descriptor)
[  193.261415][ T7026] BTRFS info (device loop0): balance: ended with status: 0
[pid  7025] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7025] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7025] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7025] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7025] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7025] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7025] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7025] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7025] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7025] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7025] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7025] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7025] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7025] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7025] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7025] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7025] exit_group(0 <unfinished ...>
[pid  7044] <... futex resumed>)        = ?
[pid  7026] <... futex resumed>)        = ?
[pid  7025] <... exit_group resumed>)   = ?
[pid  7044] +++ exited with 0 +++
[pid  7026] +++ exited with 0 +++
[pid  7025] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=294, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=40 /* 0.40 s */} ---
[pid  5073] umount2("./97", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./97", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./97/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./97/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./97/binderfs")     = 0
[pid  5073] umount2("./97/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./97/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./97/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./97/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./97/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./97/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./97")               = 0
[pid  5073] mkdir("./98", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7045 attached
, child_tidptr=0x5555570a9690) = 297
[pid  7045] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7045] chdir("./98")               = 0
[pid  7045] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7045] setpgid(0, 0)               = 0
[pid  7045] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7045] write(3, "1000", 4)         = 4
[pid  7045] close(3)                    = 0
[pid  7045] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7045] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7045] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7045] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7045] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7045] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7046 attached
 <unfinished ...>
[pid  7046] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7045] <... clone3 resumed> => {parent_tid=[298]}, 88) = 298
[pid  7046] <... rseq resumed>)         = 0
[pid  7045] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7046] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7045] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7046] <... set_robust_list resumed>) = 0
[pid  7045] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7046] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7045] <... futex resumed>)        = 0
[pid  7046] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7045] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7046] memfd_create("syzkaller", 0) = 3
[pid  7046] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7046] 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) = 16777216
[pid  7046] munmap(0x7f877d82c000, 138412032) = 0
[pid  7046] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7046] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7046] close(3)                    = 0
[pid  7046] mkdir("./file0", 0777)      = 0
[  193.873020][ T7046] loop0: detected capacity change from 0 to 32768
[  193.907815][ T7046] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7046)
[  193.923681][ T7046] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  193.933427][ T7046] BTRFS info (device loop0): force clearing of disk cache
[  193.940887][ T7046] BTRFS info (device loop0): setting nodatasum
[  193.947137][ T7046] BTRFS info (device loop0): allowing degraded mounts
[  193.953960][ T7046] BTRFS info (device loop0): enabling disk space caching
[  193.960979][ T7046] BTRFS info (device loop0): disk space caching is enabled
[  193.993183][ T7046] BTRFS info (device loop0): enabling ssd optimizations
[  194.000250][ T7046] BTRFS info (device loop0): auto enabling async discard
[  194.008489][ T7046] BTRFS info (device loop0): rebuilding free space tree
[  194.020654][ T7046] BTRFS info (device loop0): disabling free space tree
[  194.027635][ T7046] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  7046] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7046] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7046] chdir("./file0")            = 0
[pid  7046] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7046] close(4)                    = 0
[pid  7046] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7045] <... futex resumed>)        = 0
[pid  7045] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7046] open("./file0", O_RDONLY <unfinished ...>
[pid  7045] <... futex resumed>)        = 0
[pid  7046] <... open resumed>)         = 4
[pid  7045] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7046] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7045] <... futex resumed>)        = 0
[pid  7046] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  7045] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7046] <... ioctl resumed>)        = 0
[pid  7045] <... futex resumed>)        = 0
[pid  7046] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7045] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7046] <... futex resumed>)        = 0
[pid  7045] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7046] 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}} <unfinished ...>
[pid  7045] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  194.037335][ T7046] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  194.051435][ T7046] BTRFS info (device loop0): checking UUID tree
[pid  7045] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7045] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7045] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7045] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7045] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7045] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[299]}, 88) = 299
./strace-static-x86_64: Process 7064 attached
[pid  7045] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7064] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7045] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7064] <... rseq resumed>)         = 0
[pid  7045] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7045] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7064] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  7064] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7064] open("./file0", O_RDONLY)   = 5
[pid  7064] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7045] <... futex resumed>)        = 0
[pid  7064] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  7045] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  194.101795][ T7046] BTRFS info (device loop0): balance: start -d -m
[  194.110994][ T7046] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  194.136000][ T7046] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7045] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7064] <... ioctl resumed>)        = 0
[pid  7064] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  194.307447][ T7046] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  194.336387][ T7046] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  7064] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7046] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7046] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7046] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7045] close(3)                    = 0
[pid  7045] close(4)                    = 0
[pid  7045] close(5)                    = 0
[pid  7045] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7045] close(7)                    = -1 EBADF (Bad file descriptor)
[  194.355575][ T7046] BTRFS info (device loop0): balance: ended with status: 0
[pid  7045] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7045] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7045] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7045] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7045] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7045] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7045] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7045] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7045] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7045] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7045] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7045] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7045] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7045] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7045] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7045] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7045] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7045] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7045] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7045] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7045] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7045] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7045] exit_group(0)               = ?
[pid  7064] <... futex resumed>)        = ?
[pid  7046] <... futex resumed>)        = ?
[pid  7064] +++ exited with 0 +++
[pid  7046] +++ exited with 0 +++
[pid  7045] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=297, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=42 /* 0.42 s */} ---
[pid  5073] umount2("./98", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./98", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./98/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./98/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./98/binderfs")     = 0
[pid  5073] umount2("./98/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./98/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./98/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./98/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./98/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./98/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./98")               = 0
[pid  5073] mkdir("./99", 0777)         = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7065 attached
 <unfinished ...>
[pid  7065] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7065] chdir("./99" <unfinished ...>
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 300
[pid  7065] <... chdir resumed>)        = 0
[pid  7065] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7065] setpgid(0, 0)               = 0
[pid  7065] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7065] write(3, "1000", 4)         = 4
[pid  7065] close(3)                    = 0
[pid  7065] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7065] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7065] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7065] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7065] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7065] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7066 attached
 <unfinished ...>
[pid  7066] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  7066] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7065] <... clone3 resumed> => {parent_tid=[301]}, 88) = 301
[pid  7066] <... set_robust_list resumed>) = 0
[pid  7066] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7065] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7066] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7065] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7066] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable)
[pid  7065] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7066] memfd_create("syzkaller", 0 <unfinished ...>
[pid  7065] <... futex resumed>)        = 0
[pid  7066] <... memfd_create resumed>) = 3
[pid  7066] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7065] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7066] 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) = 16777216
[pid  7066] munmap(0x7f877d82c000, 138412032) = 0
[pid  7066] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7066] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7066] close(3)                    = 0
[pid  7066] mkdir("./file0", 0777)      = 0
[  194.969967][ T7066] loop0: detected capacity change from 0 to 32768
[  194.984131][ T7066] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7066)
[  195.000027][ T7066] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  195.009361][ T7066] BTRFS info (device loop0): force clearing of disk cache
[  195.016541][ T7066] BTRFS info (device loop0): setting nodatasum
[  195.022710][ T7066] BTRFS info (device loop0): allowing degraded mounts
[  195.029554][ T7066] BTRFS info (device loop0): enabling disk space caching
[  195.036626][ T7066] BTRFS info (device loop0): disk space caching is enabled
[  195.058617][ T7066] BTRFS info (device loop0): enabling ssd optimizations
[  195.065625][ T7066] BTRFS info (device loop0): auto enabling async discard
[  195.073397][ T7066] BTRFS info (device loop0): rebuilding free space tree
[  195.085893][ T7066] BTRFS info (device loop0): disabling free space tree
[  195.092786][ T7066] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  195.102555][ T7066] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  7066] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7066] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7066] chdir("./file0")            = 0
[pid  7066] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7066] close(4)                    = 0
[  195.115830][ T7066] BTRFS info (device loop0): checking UUID tree
[pid  7066] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7065] <... futex resumed>)        = 0
[pid  7066] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7065] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7066] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7065] <... futex resumed>)        = 0
[pid  7066] open("./file0", O_RDONLY <unfinished ...>
[pid  7065] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7066] <... open resumed>)         = 4
[pid  7066] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7065] <... futex resumed>)        = 0
[pid  7066] <... futex resumed>)        = 1
[pid  7065] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7066] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  7065] <... futex resumed>)        = 0
[pid  7066] <... ioctl resumed>)        = 0
[pid  7065] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7066] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7065] <... futex resumed>)        = 0
[pid  7066] <... futex resumed>)        = 1
[pid  7065] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7066] 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}} <unfinished ...>
[pid  7065] <... futex resumed>)        = 0
[pid  7065] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7065] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7065] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7065] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7065] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7065] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[302]}, 88) = 302
[pid  7065] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
./strace-static-x86_64: Process 7084 attached
[  195.193819][ T7066] BTRFS info (device loop0): balance: start -d -m
[  195.202886][ T7066] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  195.229968][ T7066] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7084] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7065] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7084] <... rseq resumed>)         = 0
[pid  7065] <... futex resumed>)        = 0
[pid  7084] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  7084] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7065] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7084] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7084] open("./file0", O_RDONLY)   = 5
[pid  7084] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7065] <... futex resumed>)        = 0
[pid  7084] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7065] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7084] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7065] <... futex resumed>)        = 0
[pid  7084] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  7065] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[  195.296052][ T7066] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  7084] <... ioctl resumed>)        = 0
[pid  7084] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7084] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7066] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7066] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7065] close(3 <unfinished ...>
[pid  7066] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7065] <... close resumed>)        = 0
[pid  7065] close(4)                    = 0
[pid  7065] close(5)                    = 0
[pid  7065] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7065] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7065] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7065] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7065] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7065] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7065] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7065] close(13)                   = -1 EBADF (Bad file descriptor)
[  195.419345][ T7066] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  195.438265][ T7066] BTRFS info (device loop0): balance: ended with status: 0
[pid  7065] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7065] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7065] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7065] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7065] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7065] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7065] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7065] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7065] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7065] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7065] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7065] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7065] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7065] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7065] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7065] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7065] exit_group(0 <unfinished ...>
[pid  7084] <... futex resumed>)        = ?
[pid  7066] <... futex resumed>)        = ?
[pid  7065] <... exit_group resumed>)   = ?
[pid  7084] +++ exited with 0 +++
[pid  7066] +++ exited with 0 +++
[pid  7065] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=300, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=43 /* 0.43 s */} ---
[pid  5073] umount2("./99", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./99", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./99/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./99/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./99/binderfs")     = 0
[pid  5073] umount2("./99/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./99/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./99/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./99/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./99/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./99/file0")         = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./99")               = 0
[pid  5073] mkdir("./100", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7085 attached
, child_tidptr=0x5555570a9690) = 303
[pid  7085] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7085] chdir("./100")              = 0
[pid  7085] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7085] setpgid(0, 0)               = 0
[pid  7085] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7085] write(3, "1000", 4)         = 4
[pid  7085] close(3)                    = 0
[pid  7085] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7085] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7085] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7085] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7085] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7085] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7086 attached
 => {parent_tid=[304]}, 88) = 304
[pid  7086] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  7085] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7086] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7085] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7086] <... set_robust_list resumed>) = 0
[pid  7086] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7086] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7085] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7086] <... futex resumed>)        = 0
[pid  7085] <... futex resumed>)        = 1
[pid  7086] memfd_create("syzkaller", 0 <unfinished ...>
[pid  7085] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7086] <... memfd_create resumed>) = 3
[pid  7086] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7086] 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) = 16777216
[pid  7086] munmap(0x7f877d82c000, 138412032) = 0
[pid  7086] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7086] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7086] close(3)                    = 0
[pid  7086] mkdir("./file0", 0777)      = 0
[  195.947461][ T7086] loop0: detected capacity change from 0 to 32768
[  195.962374][ T7086] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7086)
[  195.978402][ T7086] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  195.987697][ T7086] BTRFS info (device loop0): force clearing of disk cache
[  195.994839][ T7086] BTRFS info (device loop0): setting nodatasum
[  196.000983][ T7086] BTRFS info (device loop0): allowing degraded mounts
[  196.007788][ T7086] BTRFS info (device loop0): enabling disk space caching
[  196.014856][ T7086] BTRFS info (device loop0): disk space caching is enabled
[  196.036199][ T7086] BTRFS info (device loop0): enabling ssd optimizations
[  196.043328][ T7086] BTRFS info (device loop0): auto enabling async discard
[  196.052101][ T7086] BTRFS info (device loop0): rebuilding free space tree
[  196.064694][ T7086] BTRFS info (device loop0): disabling free space tree
[  196.071592][ T7086] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  196.081412][ T7086] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  7086] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7086] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7086] chdir("./file0")            = 0
[pid  7086] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7086] close(4)                    = 0
[pid  7086] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7086] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7085] <... futex resumed>)        = 0
[pid  7085] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7086] <... futex resumed>)        = 0
[pid  7085] <... futex resumed>)        = 1
[pid  7086] open("./file0", O_RDONLY <unfinished ...>
[pid  7085] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7086] <... open resumed>)         = 4
[  196.094597][ T7086] BTRFS info (device loop0): checking UUID tree
[pid  7086] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7085] <... futex resumed>)        = 0
[pid  7086] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  7085] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7086] <... ioctl resumed>)        = 0
[pid  7085] <... futex resumed>)        = 0
[pid  7085] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7086] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7085] <... futex resumed>)        = 0
[pid  7086] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7085] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7086] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7085] <... futex resumed>)        = 0
[pid  7086] 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}} <unfinished ...>
[pid  7085] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7085] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7085] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7085] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7085] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7085] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[305]}, 88) = 305
./strace-static-x86_64: Process 7104 attached
[pid  7104] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7085] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7104] <... rseq resumed>)         = 0
[pid  7104] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  7085] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7104] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7085] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7104] open("./file0", O_RDONLY)   = 5
[pid  7085] <... futex resumed>)        = 0
[  196.165370][ T7086] BTRFS info (device loop0): balance: start -d -m
[  196.176221][ T7086] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  196.204342][ T7086] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7104] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7085] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid  7085] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7085] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7104] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  7085] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  7085] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  7085] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[  196.252870][ T7086] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  7104] <... ioctl resumed>)        = 0
[pid  7104] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7104] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7086] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7086] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7086] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7085] close(3)                    = 0
[pid  7085] close(4)                    = 0
[pid  7085] close(5)                    = 0
[pid  7085] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7085] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7085] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7085] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7085] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7085] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7085] close(12)                   = -1 EBADF (Bad file descriptor)
[  196.376237][ T7086] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  196.395678][ T7086] BTRFS info (device loop0): balance: ended with status: 0
[pid  7085] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7085] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7085] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7085] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7085] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7085] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7085] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7085] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7085] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7085] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7085] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7085] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7085] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7085] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7085] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7085] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7085] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7085] exit_group(0 <unfinished ...>
[pid  7104] <... futex resumed>)        = ?
[pid  7086] <... futex resumed>)        = ?
[pid  7085] <... exit_group resumed>)   = ?
[pid  7104] +++ exited with 0 +++
[pid  7086] +++ exited with 0 +++
[pid  7085] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=303, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=39 /* 0.39 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./100", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./100", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./100/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./100/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./100/binderfs")    = 0
[pid  5073] umount2("./100/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./100/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./100/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./100/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./100/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./100/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./100")              = 0
[pid  5073] mkdir("./101", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7105 attached
, child_tidptr=0x5555570a9690) = 306
[pid  7105] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7105] chdir("./101")              = 0
[pid  7105] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7105] setpgid(0, 0)               = 0
[pid  7105] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7105] write(3, "1000", 4)         = 4
[pid  7105] close(3)                    = 0
[pid  7105] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7105] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7105] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7105] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7105] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7105] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7106 attached
 <unfinished ...>
[pid  7106] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  7105] <... clone3 resumed> => {parent_tid=[307]}, 88) = 307
[pid  7106] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7105] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7106] <... set_robust_list resumed>) = 0
[pid  7106] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7105] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7106] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7105] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7105] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7106] memfd_create("syzkaller", 0) = 3
[pid  7106] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7106] 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) = 16777216
[pid  7106] munmap(0x7f877d82c000, 138412032) = 0
[pid  7106] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7106] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7106] close(3)                    = 0
[pid  7106] mkdir("./file0", 0777)      = 0
[  197.007456][ T7106] loop0: detected capacity change from 0 to 32768
[  197.025050][ T7106] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7106)
[  197.040389][ T7106] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  197.049703][ T7106] BTRFS info (device loop0): force clearing of disk cache
[  197.056867][ T7106] BTRFS info (device loop0): setting nodatasum
[  197.063027][ T7106] BTRFS info (device loop0): allowing degraded mounts
[  197.069856][ T7106] BTRFS info (device loop0): enabling disk space caching
[  197.076926][ T7106] BTRFS info (device loop0): disk space caching is enabled
[  197.098098][ T7106] BTRFS info (device loop0): enabling ssd optimizations
[  197.105195][ T7106] BTRFS info (device loop0): auto enabling async discard
[  197.113085][ T7106] BTRFS info (device loop0): rebuilding free space tree
[  197.125449][ T7106] BTRFS info (device loop0): disabling free space tree
[  197.132341][ T7106] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  197.142060][ T7106] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  7106] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7106] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7106] chdir("./file0")            = 0
[pid  7106] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7106] close(4)                    = 0
[pid  7106] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7105] <... futex resumed>)        = 0
[pid  7105] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7106] open("./file0", O_RDONLY <unfinished ...>
[pid  7105] <... futex resumed>)        = 0
[pid  7106] <... open resumed>)         = 4
[pid  7105] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7106] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7105] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7105] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7106] <... futex resumed>)        = 0
[pid  7105] <... futex resumed>)        = 0
[pid  7106] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  7106] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7106] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7105] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[  197.155371][ T7106] BTRFS info (device loop0): checking UUID tree
[pid  7105] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7106] <... futex resumed>)        = 0
[pid  7105] <... futex resumed>)        = 1
[pid  7106] 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}} <unfinished ...>
[pid  7105] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7105] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7105] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7105] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7105] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7105] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 7124 attached
 => {parent_tid=[308]}, 88) = 308
[pid  7124] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  7124] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  7105] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7105] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7105] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7124] <... set_robust_list resumed>) = 0
[pid  7124] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7124] open("./file0", O_RDONLY)   = 5
[pid  7124] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7105] <... futex resumed>)        = 0
[  197.204822][ T7106] BTRFS info (device loop0): balance: start -d -m
[  197.213027][ T7106] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  197.240324][ T7106] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7124] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7105] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7124] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7124] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  7105] <... futex resumed>)        = 0
[pid  7105] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7105] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[  197.331198][ T7106] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  7124] <... ioctl resumed>)        = 0
[pid  7124] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7124] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7106] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7106] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7105] close(3 <unfinished ...>
[pid  7106] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7105] <... close resumed>)        = 0
[pid  7105] close(4)                    = 0
[pid  7105] close(5)                    = 0
[pid  7105] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7105] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7105] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7105] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7105] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7105] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7105] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7105] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7105] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7105] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7105] close(16)                   = -1 EBADF (Bad file descriptor)
[  197.425977][ T7106] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  197.447103][ T7106] BTRFS info (device loop0): balance: ended with status: 0
[pid  7105] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7105] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7105] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7105] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7105] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7105] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7105] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7105] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7105] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7105] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7105] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7105] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7105] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7105] exit_group(0 <unfinished ...>
[pid  7124] <... futex resumed>)        = ?
[pid  7106] <... futex resumed>)        = ?
[pid  7105] <... exit_group resumed>)   = ?
[pid  7124] +++ exited with 0 +++
[pid  7106] +++ exited with 0 +++
[pid  7105] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=306, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=39 /* 0.39 s */} ---
[pid  5073] umount2("./101", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./101", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./101/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./101/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./101/binderfs")    = 0
[pid  5073] umount2("./101/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./101/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./101/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./101/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./101/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./101/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./101")              = 0
[pid  5073] mkdir("./102", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7125 attached
, child_tidptr=0x5555570a9690) = 309
[pid  7125] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7125] chdir("./102")              = 0
[pid  7125] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7125] setpgid(0, 0)               = 0
[pid  7125] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7125] write(3, "1000", 4)         = 4
[pid  7125] close(3)                    = 0
[pid  7125] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7125] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7125] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7125] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7125] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7125] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7126 attached
 <unfinished ...>
[pid  7126] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7125] <... clone3 resumed> => {parent_tid=[310]}, 88) = 310
[pid  7126] <... rseq resumed>)         = 0
[pid  7125] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7126] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7125] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7126] <... set_robust_list resumed>) = 0
[pid  7125] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7126] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7125] <... futex resumed>)        = 0
[pid  7126] memfd_create("syzkaller", 0 <unfinished ...>
[pid  7125] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7126] <... memfd_create resumed>) = 3
[pid  7126] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7126] 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) = 16777216
[pid  7126] munmap(0x7f877d82c000, 138412032) = 0
[pid  7126] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7126] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7126] close(3)                    = 0
[pid  7126] mkdir("./file0", 0777)      = 0
[  198.060172][ T7126] loop0: detected capacity change from 0 to 32768
[  198.074693][ T7126] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7126)
[  198.090424][ T7126] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  198.099732][ T7126] BTRFS info (device loop0): force clearing of disk cache
[  198.106912][ T7126] BTRFS info (device loop0): setting nodatasum
[  198.113088][ T7126] BTRFS info (device loop0): allowing degraded mounts
[  198.119924][ T7126] BTRFS info (device loop0): enabling disk space caching
[  198.127046][ T7126] BTRFS info (device loop0): disk space caching is enabled
[  198.148411][ T7126] BTRFS info (device loop0): enabling ssd optimizations
[  198.155525][ T7126] BTRFS info (device loop0): auto enabling async discard
[  198.164199][ T7126] BTRFS info (device loop0): rebuilding free space tree
[  198.176259][ T7126] BTRFS info (device loop0): disabling free space tree
[  198.183169][ T7126] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  198.192935][ T7126] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  7126] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7126] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7126] chdir("./file0")            = 0
[pid  7126] ioctl(4, LOOP_CLR_FD)       = 0
[  198.206055][ T7126] BTRFS info (device loop0): checking UUID tree
[pid  7126] close(4)                    = 0
[pid  7126] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7125] <... futex resumed>)        = 0
[pid  7126] open("./file0", O_RDONLY <unfinished ...>
[pid  7125] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7126] <... open resumed>)         = 4
[pid  7125] <... futex resumed>)        = 0
[pid  7125] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7126] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7125] <... futex resumed>)        = 0
[pid  7126] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  7125] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7126] <... ioctl resumed>)        = 0
[pid  7125] <... futex resumed>)        = 0
[pid  7126] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7125] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7126] <... futex resumed>)        = 0
[pid  7126] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7125] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7125] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7126] <... futex resumed>)        = 0
[pid  7125] <... futex resumed>)        = 1
[pid  7126] 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}} <unfinished ...>
[pid  7125] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7125] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7125] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7125] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7125] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7125] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 7144 attached
 <unfinished ...>
[pid  7144] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  7144] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  7144] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7144] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7125] <... clone3 resumed> => {parent_tid=[311]}, 88) = 311
[pid  7125] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7125] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7144] <... futex resumed>)        = 0
[pid  7125] <... futex resumed>)        = 1
[pid  7144] open("./file0", O_RDONLY <unfinished ...>
[pid  7125] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7144] <... open resumed>)         = 5
[pid  7144] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7125] <... futex resumed>)        = 0
[pid  7125] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7144] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  7125] <... futex resumed>)        = 0
[  198.278239][ T7126] BTRFS info (device loop0): balance: start -d -m
[  198.288308][ T7126] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  198.315229][ T7126] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7125] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[  198.400964][ T7126] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  7144] <... ioctl resumed>)        = 0
[pid  7144] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7144] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7126] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7126] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7126] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7125] close(3)                    = 0
[pid  7125] close(4)                    = 0
[pid  7125] close(5)                    = 0
[pid  7125] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7125] close(7)                    = -1 EBADF (Bad file descriptor)
[  198.504769][ T7126] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  198.524899][ T7126] BTRFS info (device loop0): balance: ended with status: 0
[pid  7125] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7125] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7125] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7125] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7125] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7125] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7125] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7125] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7125] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7125] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7125] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7125] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7125] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7125] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7125] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7125] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7125] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7125] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7125] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7125] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7125] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7125] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7125] exit_group(0)               = ?
[pid  7144] <... futex resumed>)        = ?
[pid  7126] <... futex resumed>)        = ?
[pid  7144] +++ exited with 0 +++
[pid  7126] +++ exited with 0 +++
[pid  7125] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=309, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=43 /* 0.43 s */} ---
[pid  5073] umount2("./102", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./102", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./102/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./102/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./102/binderfs")    = 0
[pid  5073] umount2("./102/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./102/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./102/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./102/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./102/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./102/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./102")              = 0
[pid  5073] mkdir("./103", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7145 attached
, child_tidptr=0x5555570a9690) = 312
[pid  7145] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7145] chdir("./103")              = 0
[pid  7145] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7145] setpgid(0, 0)               = 0
[pid  7145] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7145] write(3, "1000", 4)         = 4
[pid  7145] close(3)                    = 0
[pid  7145] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7145] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7145] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7145] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7145] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7145] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7146 attached
 => {parent_tid=[313]}, 88) = 313
[pid  7146] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7145] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7146] <... rseq resumed>)         = 0
[pid  7146] set_robust_list(0x7f8785c4c9a0, 24) = 0
[pid  7145] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7146] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7145] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7146] memfd_create("syzkaller", 0 <unfinished ...>
[pid  7145] <... futex resumed>)        = 0
[pid  7146] <... memfd_create resumed>) = 3
[pid  7145] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7146] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7146] 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) = 16777216
[pid  7146] munmap(0x7f877d82c000, 138412032) = 0
[pid  7146] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7146] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7146] close(3)                    = 0
[pid  7146] mkdir("./file0", 0777)      = 0
[  199.118852][ T7146] loop0: detected capacity change from 0 to 32768
[  199.142735][ T7146] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7146)
[  199.159611][ T7146] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  199.168897][ T7146] BTRFS info (device loop0): force clearing of disk cache
[  199.176044][ T7146] BTRFS info (device loop0): setting nodatasum
[  199.182202][ T7146] BTRFS info (device loop0): allowing degraded mounts
[  199.189026][ T7146] BTRFS info (device loop0): enabling disk space caching
[  199.196089][ T7146] BTRFS info (device loop0): disk space caching is enabled
[  199.217489][ T7146] BTRFS info (device loop0): enabling ssd optimizations
[  199.224479][ T7146] BTRFS info (device loop0): auto enabling async discard
[  199.232383][ T7146] BTRFS info (device loop0): rebuilding free space tree
[  199.244974][ T7146] BTRFS info (device loop0): disabling free space tree
[  199.252074][ T7146] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  7146] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7146] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7146] chdir("./file0")            = 0
[pid  7146] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7146] close(4)                    = 0
[pid  7146] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7146] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7145] <... futex resumed>)        = 0
[  199.262181][ T7146] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  199.276571][ T7146] BTRFS info (device loop0): checking UUID tree
[pid  7145] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7146] <... futex resumed>)        = 0
[pid  7145] <... futex resumed>)        = 1
[pid  7146] open("./file0", O_RDONLY)   = 4
[pid  7145] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7146] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7145] <... futex resumed>)        = 0
[pid  7145] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7145] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7146] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  7146] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7145] <... futex resumed>)        = 0
[pid  7145] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7145] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7146] 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}} <unfinished ...>
[pid  7145] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  7145] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7145] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7145] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7145] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7145] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[314]}, 88) = 314
[pid  7145] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7145] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
./strace-static-x86_64: Process 7164 attached
[pid  7145] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7164] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  7164] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  7164] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7164] open("./file0", O_RDONLY)   = 5
[pid  7164] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7145] <... futex resumed>)        = 0
[pid  7145] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7164] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  199.360461][ T7146] BTRFS info (device loop0): balance: start -d -m
[  199.370440][ T7146] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  199.394516][ T7146] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7145] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[  199.484276][ T7146] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  7164] <... ioctl resumed>)        = 0
[pid  7164] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7164] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7146] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7146] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7146] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7145] close(3)                    = 0
[pid  7145] close(4)                    = 0
[pid  7145] close(5)                    = 0
[pid  7145] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7145] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7145] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7145] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7145] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7145] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7145] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7145] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7145] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7145] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7145] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7145] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7145] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7145] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7145] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7145] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7145] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7145] close(23)                   = -1 EBADF (Bad file descriptor)
[  199.577264][ T7146] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  199.597665][ T7146] BTRFS info (device loop0): balance: ended with status: 0
[pid  7145] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7145] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7145] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7145] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7145] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7145] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7145] exit_group(0 <unfinished ...>
[pid  7164] <... futex resumed>)        = ?
[pid  7146] <... futex resumed>)        = ?
[pid  7145] <... exit_group resumed>)   = ?
[pid  7164] +++ exited with 0 +++
[pid  7146] +++ exited with 0 +++
[pid  7145] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=312, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=42 /* 0.42 s */} ---
[pid  5073] umount2("./103", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./103", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./103/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./103/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./103/binderfs")    = 0
[pid  5073] umount2("./103/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./103/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./103/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./103/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./103/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./103/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./103")              = 0
[pid  5073] mkdir("./104", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7165 attached
, child_tidptr=0x5555570a9690) = 315
[pid  7165] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7165] chdir("./104")              = 0
[pid  7165] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7165] setpgid(0, 0)               = 0
[pid  7165] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7165] write(3, "1000", 4)         = 4
[pid  7165] close(3)                    = 0
[pid  7165] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7165] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7165] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7165] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7165] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7165] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7166 attached
 <unfinished ...>
[pid  7166] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7165] <... clone3 resumed> => {parent_tid=[316]}, 88) = 316
[pid  7166] <... rseq resumed>)         = 0
[pid  7165] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7166] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7165] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7166] <... set_robust_list resumed>) = 0
[pid  7165] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7166] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7165] <... futex resumed>)        = 0
[pid  7166] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7165] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7166] memfd_create("syzkaller", 0) = 3
[pid  7166] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7166] 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) = 16777216
[pid  7166] munmap(0x7f877d82c000, 138412032) = 0
[pid  7166] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7166] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7166] close(3)                    = 0
[pid  7166] mkdir("./file0", 0777)      = 0
[  200.278125][ T7166] loop0: detected capacity change from 0 to 32768
[  200.292687][ T7166] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7166)
[  200.309493][ T7166] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  200.318761][ T7166] BTRFS info (device loop0): force clearing of disk cache
[  200.325897][ T7166] BTRFS info (device loop0): setting nodatasum
[  200.332057][ T7166] BTRFS info (device loop0): allowing degraded mounts
[  200.338896][ T7166] BTRFS info (device loop0): enabling disk space caching
[  200.346017][ T7166] BTRFS info (device loop0): disk space caching is enabled
[  200.368195][ T7166] BTRFS info (device loop0): enabling ssd optimizations
[  200.375356][ T7166] BTRFS info (device loop0): auto enabling async discard
[  200.383280][ T7166] BTRFS info (device loop0): rebuilding free space tree
[  200.395339][ T7166] BTRFS info (device loop0): disabling free space tree
[  200.402285][ T7166] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  200.411954][ T7166] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  7166] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7166] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7166] chdir("./file0")            = 0
[pid  7166] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7166] close(4)                    = 0
[pid  7166] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7165] <... futex resumed>)        = 0
[pid  7165] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7166] open("./file0", O_RDONLY <unfinished ...>
[pid  7165] <... futex resumed>)        = 0
[pid  7166] <... open resumed>)         = 4
[  200.425961][ T7166] BTRFS info (device loop0): checking UUID tree
[pid  7165] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7166] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7165] <... futex resumed>)        = 0
[pid  7166] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7165] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7165] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7166] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7166] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  7166] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7165] <... futex resumed>)        = 0
[pid  7166] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7165] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7166] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7165] <... futex resumed>)        = 0
[pid  7165] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7166] 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}} <unfinished ...>
[pid  7165] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  7165] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7165] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7165] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7165] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7165] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[317]}, 88) = 317
[pid  7165] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7165] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7165] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 7184 attached
 <unfinished ...>
[pid  7184] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  7184] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  7184] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7184] open("./file0", O_RDONLY)   = 5
[pid  7184] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7165] <... futex resumed>)        = 0
[pid  7184] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7165] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7184] <... futex resumed>)        = 0
[pid  7165] <... futex resumed>)        = 1
[pid  7184] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  200.510552][ T7166] BTRFS info (device loop0): balance: start -d -m
[  200.522140][ T7166] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  200.549629][ T7166] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7165] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[  200.623004][ T7166] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  7184] <... ioctl resumed>)        = 0
[pid  7184] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7184] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7166] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7166] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7166] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7165] close(3)                    = 0
[pid  7165] close(4)                    = 0
[pid  7165] close(5)                    = 0
[pid  7165] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7165] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7165] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7165] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7165] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7165] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7165] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7165] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7165] close(14)                   = -1 EBADF (Bad file descriptor)
[  200.707963][ T7166] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  200.728365][ T7166] BTRFS info (device loop0): balance: ended with status: 0
[pid  7165] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7165] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7165] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7165] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7165] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7165] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7165] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7165] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7165] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7165] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7165] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7165] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7165] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7165] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7165] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7165] exit_group(0 <unfinished ...>
[pid  7166] <... futex resumed>)        = ?
[pid  7184] <... futex resumed>)        = ?
[pid  7184] +++ exited with 0 +++
[pid  7166] +++ exited with 0 +++
[pid  7165] <... exit_group resumed>)   = ?
[pid  7165] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=315, si_uid=0, si_status=0, si_utime=0, si_stime=42 /* 0.42 s */} ---
[pid  5073] umount2("./104", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./104", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./104/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./104/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./104/binderfs")    = 0
[pid  5073] umount2("./104/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./104/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./104/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./104/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./104/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./104/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./104")              = 0
[pid  5073] mkdir("./105", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7185 attached
 <unfinished ...>
[pid  7185] set_robust_list(0x5555570a96a0, 24 <unfinished ...>
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 318
[pid  7185] <... set_robust_list resumed>) = 0
[pid  7185] chdir("./105")              = 0
[pid  7185] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7185] setpgid(0, 0)               = 0
[pid  7185] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7185] write(3, "1000", 4)         = 4
[pid  7185] close(3)                    = 0
[pid  7185] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7185] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7185] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7185] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7185] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7185] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7186 attached
 <unfinished ...>
[pid  7186] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  7185] <... clone3 resumed> => {parent_tid=[319]}, 88) = 319
[pid  7186] set_robust_list(0x7f8785c4c9a0, 24) = 0
[pid  7185] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7186] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7185] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7186] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7185] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7186] memfd_create("syzkaller", 0 <unfinished ...>
[pid  7185] <... futex resumed>)        = 0
[pid  7185] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7186] <... memfd_create resumed>) = 3
[pid  7186] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7186] 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) = 16777216
[pid  7186] munmap(0x7f877d82c000, 138412032) = 0
[pid  7186] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7186] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7186] close(3)                    = 0
[pid  7186] mkdir("./file0", 0777)      = 0
[  201.406240][ T7186] loop0: detected capacity change from 0 to 32768
[  201.432171][ T7186] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7186)
[  201.447923][ T7186] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  201.457204][ T7186] BTRFS info (device loop0): force clearing of disk cache
[  201.464368][ T7186] BTRFS info (device loop0): setting nodatasum
[  201.470531][ T7186] BTRFS info (device loop0): allowing degraded mounts
[  201.477351][ T7186] BTRFS info (device loop0): enabling disk space caching
[  201.484435][ T7186] BTRFS info (device loop0): disk space caching is enabled
[  201.506226][ T7186] BTRFS info (device loop0): enabling ssd optimizations
[  201.513207][ T7186] BTRFS info (device loop0): auto enabling async discard
[  201.521282][ T7186] BTRFS info (device loop0): rebuilding free space tree
[  201.532991][ T7186] BTRFS info (device loop0): disabling free space tree
[  201.540013][ T7186] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  7186] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7186] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7186] chdir("./file0")            = 0
[pid  7186] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7186] close(4)                    = 0
[pid  7186] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7185] <... futex resumed>)        = 0
[pid  7185] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7186] open("./file0", O_RDONLY <unfinished ...>
[pid  7185] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7186] <... open resumed>)         = 4
[pid  7186] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7185] <... futex resumed>)        = 0
[pid  7185] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7186] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  7185] <... futex resumed>)        = 0
[pid  7185] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7186] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7185] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7186] <... futex resumed>)        = 0
[pid  7185] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7186] 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}} <unfinished ...>
[pid  7185] <... futex resumed>)        = 0
[  201.549714][ T7186] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  201.563463][ T7186] BTRFS info (device loop0): checking UUID tree
[pid  7185] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7185] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7185] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7185] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7185] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7185] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 7204 attached
 <unfinished ...>
[pid  7204] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  7185] <... clone3 resumed> => {parent_tid=[320]}, 88) = 320
[pid  7204] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  7185] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7204] <... set_robust_list resumed>) = 0
[pid  7204] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7185] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7204] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7204] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7185] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7204] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7185] <... futex resumed>)        = 0
[pid  7204] open("./file0", O_RDONLY <unfinished ...>
[pid  7185] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7204] <... open resumed>)         = 5
[pid  7204] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7185] <... futex resumed>)        = 0
[pid  7185] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7185] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[  201.617293][ T7186] BTRFS info (device loop0): balance: start -d -m
[  201.626232][ T7186] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  201.650715][ T7186] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7204] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  7185] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  7204] <... ioctl resumed>)        = 0
[pid  7204] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  201.826524][ T7186] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  201.858054][ T7186] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  7204] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7186] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7186] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7186] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7185] close(3)                    = 0
[pid  7185] close(4)                    = 0
[pid  7185] close(5)                    = 0
[pid  7185] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7185] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7185] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7185] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7185] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7185] close(11)                   = -1 EBADF (Bad file descriptor)
[  201.877492][ T7186] BTRFS info (device loop0): balance: ended with status: 0
[pid  7185] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7185] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7185] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7185] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7185] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7185] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7185] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7185] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7185] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7185] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7185] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7185] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7185] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7185] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7185] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7185] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7185] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7185] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7185] exit_group(0 <unfinished ...>
[pid  7204] <... futex resumed>)        = ?
[pid  7186] <... futex resumed>)        = ?
[pid  7204] +++ exited with 0 +++
[pid  7186] +++ exited with 0 +++
[pid  7185] <... exit_group resumed>)   = ?
[pid  7185] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=318, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=42 /* 0.42 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./105", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./105", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./105/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./105/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./105/binderfs")    = 0
[pid  5073] umount2("./105/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./105/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./105/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./105/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./105/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./105/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./105")              = 0
[pid  5073] mkdir("./106", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7205 attached
, child_tidptr=0x5555570a9690) = 321
[pid  7205] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7205] chdir("./106")              = 0
[pid  7205] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7205] setpgid(0, 0)               = 0
[pid  7205] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7205] write(3, "1000", 4)         = 4
[pid  7205] close(3)                    = 0
[pid  7205] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7205] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7205] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7205] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7205] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7205] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7206 attached
 <unfinished ...>
[pid  7206] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  7205] <... clone3 resumed> => {parent_tid=[322]}, 88) = 322
[pid  7206] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7205] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7206] <... set_robust_list resumed>) = 0
[pid  7206] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7205] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7206] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7205] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7206] memfd_create("syzkaller", 0 <unfinished ...>
[pid  7205] <... futex resumed>)        = 0
[pid  7206] <... memfd_create resumed>) = 3
[pid  7205] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7206] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7206] 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) = 16777216
[pid  7206] munmap(0x7f877d82c000, 138412032) = 0
[pid  7206] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7206] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7206] close(3)                    = 0
[pid  7206] mkdir("./file0", 0777)      = 0
[  202.498399][ T7206] loop0: detected capacity change from 0 to 32768
[  202.524586][ T7206] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7206)
[  202.540466][ T7206] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  202.549735][ T7206] BTRFS info (device loop0): force clearing of disk cache
[  202.556904][ T7206] BTRFS info (device loop0): setting nodatasum
[  202.563070][ T7206] BTRFS info (device loop0): allowing degraded mounts
[  202.569883][ T7206] BTRFS info (device loop0): enabling disk space caching
[  202.576930][ T7206] BTRFS info (device loop0): disk space caching is enabled
[  202.599446][ T7206] BTRFS info (device loop0): enabling ssd optimizations
[  202.606710][ T7206] BTRFS info (device loop0): auto enabling async discard
[  202.615042][ T7206] BTRFS info (device loop0): rebuilding free space tree
[  202.627075][ T7206] BTRFS info (device loop0): disabling free space tree
[  202.634025][ T7206] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  7206] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7206] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7206] chdir("./file0")            = 0
[pid  7206] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7206] close(4)                    = 0
[pid  7206] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7205] <... futex resumed>)        = 0
[pid  7206] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7205] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7206] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7205] <... futex resumed>)        = 0
[pid  7206] open("./file0", O_RDONLY <unfinished ...>
[pid  7205] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7206] <... open resumed>)         = 4
[pid  7206] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7205] <... futex resumed>)        = 0
[pid  7206] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7205] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7206] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7205] <... futex resumed>)        = 0
[pid  7206] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  7205] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7206] <... ioctl resumed>)        = 0
[  202.643651][ T7206] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  202.657067][ T7206] BTRFS info (device loop0): checking UUID tree
[pid  7206] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7206] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7205] <... futex resumed>)        = 0
[pid  7205] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7205] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7206] <... futex resumed>)        = 0
[pid  7206] 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}} <unfinished ...>
[pid  7205] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  7205] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  7205] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  7205] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7205] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7205] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7205] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7205] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 7224 attached
 => {parent_tid=[323]}, 88) = 323
[pid  7205] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7205] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7205] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7224] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  7224] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  7224] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7224] open("./file0", O_RDONLY)   = 5
[pid  7224] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7205] <... futex resumed>)        = 0
[pid  7224] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7205] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7224] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7205] <... futex resumed>)        = 0
[pid  7224] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  202.728192][ T7206] BTRFS info (device loop0): balance: start -d -m
[  202.739283][ T7206] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  202.763841][ T7206] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7205] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7224] <... ioctl resumed>)        = 0
[pid  7224] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  202.921603][ T7206] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  202.945914][ T7206] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  7224] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7206] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7206] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7205] close(3)                    = 0
[pid  7206] <... futex resumed>)        = 0
[pid  7205] close(4)                    = 0
[pid  7206] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7205] close(5)                    = 0
[pid  7205] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7205] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7205] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7205] close(9)                    = -1 EBADF (Bad file descriptor)
[  202.965297][ T7206] BTRFS info (device loop0): balance: ended with status: 0
[pid  7205] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7205] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7205] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7205] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7205] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7205] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7205] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7205] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7205] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7205] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7205] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7205] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7205] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7205] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7205] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7205] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7205] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7205] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7205] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7205] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7205] exit_group(0 <unfinished ...>
[pid  7224] <... futex resumed>)        = ?
[pid  7206] <... futex resumed>)        = ?
[pid  7205] <... exit_group resumed>)   = ?
[pid  7224] +++ exited with 0 +++
[pid  7206] +++ exited with 0 +++
[pid  7205] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=321, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=41 /* 0.41 s */} ---
[pid  5073] umount2("./106", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./106", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./106/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./106/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./106/binderfs")    = 0
[pid  5073] umount2("./106/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./106/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./106/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./106/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./106/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./106/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./106")              = 0
[pid  5073] mkdir("./107", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7225 attached
 <unfinished ...>
[pid  7225] set_robust_list(0x5555570a96a0, 24 <unfinished ...>
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 324
[pid  7225] <... set_robust_list resumed>) = 0
[pid  7225] chdir("./107")              = 0
[pid  7225] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7225] setpgid(0, 0)               = 0
[pid  7225] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7225] write(3, "1000", 4)         = 4
[pid  7225] close(3)                    = 0
[pid  7225] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7225] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7225] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7225] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7225] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7225] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7226 attached
 <unfinished ...>
[pid  7226] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7225] <... clone3 resumed> => {parent_tid=[325]}, 88) = 325
[pid  7226] <... rseq resumed>)         = 0
[pid  7225] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7226] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7225] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7226] <... set_robust_list resumed>) = 0
[pid  7225] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7226] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7225] <... futex resumed>)        = 0
[pid  7226] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7225] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7226] memfd_create("syzkaller", 0) = 3
[pid  7226] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7226] 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) = 16777216
[pid  7226] munmap(0x7f877d82c000, 138412032) = 0
[pid  7226] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7226] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7226] close(3)                    = 0
[pid  7226] mkdir("./file0", 0777)      = 0
[  203.590069][ T7226] loop0: detected capacity change from 0 to 32768
[  203.604960][ T7226] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7226)
[  203.620290][ T7226] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  203.629913][ T7226] BTRFS info (device loop0): force clearing of disk cache
[  203.637074][ T7226] BTRFS info (device loop0): setting nodatasum
[  203.643357][ T7226] BTRFS info (device loop0): allowing degraded mounts
[  203.650595][ T7226] BTRFS info (device loop0): enabling disk space caching
[  203.657684][ T7226] BTRFS info (device loop0): disk space caching is enabled
[  203.679644][ T7226] BTRFS info (device loop0): enabling ssd optimizations
[  203.686670][ T7226] BTRFS info (device loop0): auto enabling async discard
[  203.695162][ T7226] BTRFS info (device loop0): rebuilding free space tree
[  203.707029][ T7226] BTRFS info (device loop0): disabling free space tree
[  203.713978][ T7226] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  203.723607][ T7226] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  7226] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7226] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7226] chdir("./file0")            = 0
[pid  7226] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7226] close(4)                    = 0
[pid  7226] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7225] <... futex resumed>)        = 0
[pid  7225] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7225] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7226] open("./file0", O_RDONLY)   = 4
[pid  7226] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7225] <... futex resumed>)        = 0
[  203.737446][ T7226] BTRFS info (device loop0): checking UUID tree
[pid  7226] <... futex resumed>)        = 1
[pid  7225] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7226] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  7225] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7226] <... ioctl resumed>)        = 0
[pid  7226] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7225] <... futex resumed>)        = 0
[pid  7226] 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}} <unfinished ...>
[pid  7225] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7225] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7225] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7225] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7225] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7225] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7225] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[326]}, 88) = 326
[pid  7225] rt_sigprocmask(SIG_SETMASK, [], ./strace-static-x86_64: Process 7244 attached
 <unfinished ...>
[pid  7244] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7225] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7244] <... rseq resumed>)         = 0
[pid  7244] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  7225] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7244] <... set_robust_list resumed>) = 0
[pid  7244] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7225] <... futex resumed>)        = 0
[pid  7244] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7225] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7244] open("./file0", O_RDONLY)   = 5
[pid  7244] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7225] <... futex resumed>)        = 0
[pid  7244] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7225] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7244] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7225] <... futex resumed>)        = 0
[pid  7244] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  203.798983][ T7226] BTRFS info (device loop0): balance: start -d -m
[  203.807314][ T7226] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  203.833131][ T7226] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7225] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[  203.916284][ T7226] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  7244] <... ioctl resumed>)        = 0
[pid  7244] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7244] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7226] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7226] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7226] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7225] close(3)                    = 0
[pid  7225] close(4)                    = 0
[pid  7225] close(5)                    = 0
[pid  7225] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7225] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7225] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7225] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7225] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7225] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7225] close(12)                   = -1 EBADF (Bad file descriptor)
[  204.027239][ T7226] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  204.047016][ T7226] BTRFS info (device loop0): balance: ended with status: 0
[pid  7225] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7225] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7225] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7225] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7225] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7225] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7225] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7225] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7225] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7225] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7225] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7225] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7225] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7225] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7225] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7225] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7225] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7225] exit_group(0 <unfinished ...>
[pid  7244] <... futex resumed>)        = ?
[pid  7226] <... futex resumed>)        = ?
[pid  7225] <... exit_group resumed>)   = ?
[pid  7244] +++ exited with 0 +++
[pid  7226] +++ exited with 0 +++
[pid  7225] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=324, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=41 /* 0.41 s */} ---
[pid  5073] umount2("./107", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./107", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./107/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./107/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./107/binderfs")    = 0
[pid  5073] umount2("./107/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./107/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./107/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./107/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./107/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./107/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./107")              = 0
[pid  5073] mkdir("./108", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7245 attached
 <unfinished ...>
[pid  7245] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 327
[pid  7245] chdir("./108")              = 0
[pid  7245] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7245] setpgid(0, 0)               = 0
[pid  7245] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7245] write(3, "1000", 4)         = 4
[pid  7245] close(3)                    = 0
[pid  7245] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7245] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7245] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7245] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7245] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7245] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7246 attached
 <unfinished ...>
[pid  7246] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7245] <... clone3 resumed> => {parent_tid=[328]}, 88) = 328
[pid  7246] <... rseq resumed>)         = 0
[pid  7245] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7246] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7245] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7246] <... set_robust_list resumed>) = 0
[pid  7245] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7246] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7245] <... futex resumed>)        = 0
[pid  7246] memfd_create("syzkaller", 0 <unfinished ...>
[pid  7245] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7246] <... memfd_create resumed>) = 3
[pid  7246] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7246] 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) = 16777216
[pid  7246] munmap(0x7f877d82c000, 138412032) = 0
[pid  7246] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7246] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7246] close(3)                    = 0
[pid  7246] mkdir("./file0", 0777)      = 0
[  204.693843][ T7246] loop0: detected capacity change from 0 to 32768
[  204.708494][ T7246] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7246)
[  204.723544][ T7246] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  204.732839][ T7246] BTRFS info (device loop0): force clearing of disk cache
[  204.739990][ T7246] BTRFS info (device loop0): setting nodatasum
[  204.746493][ T7246] BTRFS info (device loop0): allowing degraded mounts
[  204.753304][ T7246] BTRFS info (device loop0): enabling disk space caching
[  204.760366][ T7246] BTRFS info (device loop0): disk space caching is enabled
[  204.782082][ T7246] BTRFS info (device loop0): enabling ssd optimizations
[  204.789072][ T7246] BTRFS info (device loop0): auto enabling async discard
[  204.797645][ T7246] BTRFS info (device loop0): rebuilding free space tree
[  204.809476][ T7246] BTRFS info (device loop0): disabling free space tree
[  204.816438][ T7246] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  204.826109][ T7246] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  7246] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7246] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7246] chdir("./file0")            = 0
[pid  7246] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7246] close(4)                    = 0
[pid  7246] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7246] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7245] <... futex resumed>)        = 0
[pid  7245] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7246] <... futex resumed>)        = 0
[pid  7245] <... futex resumed>)        = 1
[pid  7246] open("./file0", O_RDONLY <unfinished ...>
[pid  7245] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7246] <... open resumed>)         = 4
[pid  7246] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7245] <... futex resumed>)        = 0
[pid  7246] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7245] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7246] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7245] <... futex resumed>)        = 0
[pid  7246] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  7245] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7246] <... ioctl resumed>)        = 0
[  204.839429][ T7246] BTRFS info (device loop0): checking UUID tree
[pid  7246] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7245] <... futex resumed>)        = 0
[pid  7245] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7246] 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}} <unfinished ...>
[pid  7245] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7245] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7245] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7245] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7245] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7245] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[329]}, 88) = 329
./strace-static-x86_64: Process 7264 attached
[pid  7264] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  7264] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  7264] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7264] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7245] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7245] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7264] <... futex resumed>)        = 0
[pid  7245] <... futex resumed>)        = 1
[pid  7264] open("./file0", O_RDONLY <unfinished ...>
[pid  7245] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7264] <... open resumed>)         = 5
[pid  7264] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7245] <... futex resumed>)        = 0
[pid  7264] <... futex resumed>)        = 1
[pid  7245] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  204.891033][ T7246] BTRFS info (device loop0): balance: start -d -m
[  204.902508][ T7246] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  204.927635][ T7246] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7245] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7264] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  7245] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[  204.979376][ T7246] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  7264] <... ioctl resumed>)        = 0
[pid  7264] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7264] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7246] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7246] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7246] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7245] close(3)                    = 0
[pid  7245] close(4)                    = 0
[pid  7245] close(5)                    = 0
[pid  7245] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7245] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7245] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7245] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7245] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7245] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7245] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7245] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7245] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7245] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7245] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7245] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7245] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7245] close(19)                   = -1 EBADF (Bad file descriptor)
[  205.170487][ T7246] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  205.197184][ T7246] BTRFS info (device loop0): balance: ended with status: 0
[pid  7245] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7245] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7245] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7245] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7245] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7245] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7245] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7245] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7245] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7245] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7245] exit_group(0 <unfinished ...>
[pid  7246] <... futex resumed>)        = ?
[pid  7245] <... exit_group resumed>)   = ?
[pid  7264] <... futex resumed>)        = ?
[pid  7246] +++ exited with 0 +++
[pid  7264] +++ exited with 0 +++
[pid  7245] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=327, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=44 /* 0.44 s */} ---
[pid  5073] umount2("./108", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./108", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./108/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./108/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./108/binderfs")    = 0
[pid  5073] umount2("./108/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./108/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./108/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./108/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./108/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./108/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./108")              = 0
[pid  5073] mkdir("./109", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555570a9690) = 330
./strace-static-x86_64: Process 7265 attached
[pid  7265] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7265] chdir("./109")              = 0
[pid  7265] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7265] setpgid(0, 0)               = 0
[pid  7265] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7265] write(3, "1000", 4)         = 4
[pid  7265] close(3)                    = 0
[pid  7265] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7265] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7265] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7265] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7265] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7265] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7266 attached
 => {parent_tid=[331]}, 88) = 331
[pid  7265] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7265] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7266] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  7266] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7265] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7266] <... set_robust_list resumed>) = 0
[pid  7266] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7266] memfd_create("syzkaller", 0) = 3
[pid  7266] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7266] 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) = 16777216
[pid  7266] munmap(0x7f877d82c000, 138412032) = 0
[pid  7266] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7266] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7266] close(3)                    = 0
[pid  7266] mkdir("./file0", 0777)      = 0
[  205.900989][ T7266] loop0: detected capacity change from 0 to 32768
[  205.925975][ T7266] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7266)
[  205.941094][ T7266] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  205.950386][ T7266] BTRFS info (device loop0): force clearing of disk cache
[  205.957550][ T7266] BTRFS info (device loop0): setting nodatasum
[  205.963716][ T7266] BTRFS info (device loop0): allowing degraded mounts
[  205.970585][ T7266] BTRFS info (device loop0): enabling disk space caching
[  205.977644][ T7266] BTRFS info (device loop0): disk space caching is enabled
[  205.999849][ T7266] BTRFS info (device loop0): enabling ssd optimizations
[  206.006865][ T7266] BTRFS info (device loop0): auto enabling async discard
[  206.014867][ T7266] BTRFS info (device loop0): rebuilding free space tree
[  206.026895][ T7266] BTRFS info (device loop0): disabling free space tree
[  206.034069][ T7266] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  7266] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7266] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7266] chdir("./file0")            = 0
[pid  7266] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7266] close(4)                    = 0
[pid  7266] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7265] <... futex resumed>)        = 0
[pid  7266] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7265] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7266] <... futex resumed>)        = 0
[pid  7265] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[  206.043718][ T7266] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  206.056978][ T7266] BTRFS info (device loop0): checking UUID tree
[pid  7266] open("./file0", O_RDONLY)   = 4
[pid  7266] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7266] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7265] <... futex resumed>)        = 0
[pid  7265] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7266] <... futex resumed>)        = 0
[pid  7265] <... futex resumed>)        = 1
[pid  7266] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  7265] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7266] <... ioctl resumed>)        = 0
[pid  7266] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7265] <... futex resumed>)        = 0
[pid  7266] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7265] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7266] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7265] <... futex resumed>)        = 0
[pid  7266] 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}} <unfinished ...>
[  206.142673][ T7266] BTRFS info (device loop0): balance: start -d -m
[  206.153186][ T7266] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  7265] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7265] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7265] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7265] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7265] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7265] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[332]}, 88) = 332
[pid  7265] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7265] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7265] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 7284 attached
 <unfinished ...>
[pid  7284] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  7284] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  7284] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7284] open("./file0", O_RDONLY)   = 5
[pid  7284] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7265] <... futex resumed>)        = 0
[pid  7284] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7265] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7284] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7265] <... futex resumed>)        = 0
[pid  7284] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  206.183255][ T7266] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7265] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7284] <... ioctl resumed>)        = 0
[pid  7284] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  206.321335][ T7266] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  206.346182][ T7266] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  7284] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7266] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7266] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7266] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7265] close(3)                    = 0
[pid  7265] close(4)                    = 0
[pid  7265] close(5)                    = 0
[pid  7265] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7265] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7265] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7265] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7265] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7265] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7265] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7265] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7265] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7265] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7265] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7265] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7265] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7265] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7265] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7265] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7265] close(22)                   = -1 EBADF (Bad file descriptor)
[  206.365098][ T7266] BTRFS info (device loop0): balance: ended with status: 0
[pid  7265] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7265] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7265] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7265] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7265] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7265] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7265] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7265] exit_group(0 <unfinished ...>
[pid  7284] <... futex resumed>)        = ?
[pid  7266] <... futex resumed>)        = ?
[pid  7265] <... exit_group resumed>)   = ?
[pid  7284] +++ exited with 0 +++
[pid  7266] +++ exited with 0 +++
[pid  7265] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=330, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=39 /* 0.39 s */} ---
[pid  5073] umount2("./109", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./109", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./109/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./109/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./109/binderfs")    = 0
[pid  5073] umount2("./109/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./109/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./109/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./109/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./109/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./109/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./109")              = 0
[pid  5073] mkdir("./110", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7285 attached
 <unfinished ...>
[pid  7285] set_robust_list(0x5555570a96a0, 24 <unfinished ...>
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 333
[pid  7285] <... set_robust_list resumed>) = 0
[pid  7285] chdir("./110")              = 0
[pid  7285] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7285] setpgid(0, 0)               = 0
[pid  7285] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7285] write(3, "1000", 4)         = 4
[pid  7285] close(3)                    = 0
[pid  7285] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7285] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7285] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7285] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7285] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7285] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7286 attached
 <unfinished ...>
[pid  7286] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  7286] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7285] <... clone3 resumed> => {parent_tid=[334]}, 88) = 334
[pid  7286] <... set_robust_list resumed>) = 0
[pid  7286] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7285] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7286] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7285] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7286] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7285] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7286] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7285] <... futex resumed>)        = 0
[pid  7285] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7286] memfd_create("syzkaller", 0) = 3
[pid  7286] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7286] 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) = 16777216
[pid  7286] munmap(0x7f877d82c000, 138412032) = 0
[pid  7286] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7286] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7286] close(3)                    = 0
[pid  7286] mkdir("./file0", 0777)      = 0
[  206.936835][ T7286] loop0: detected capacity change from 0 to 32768
[  206.950457][ T7286] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7286)
[  206.966813][ T7286] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  206.976154][ T7286] BTRFS info (device loop0): force clearing of disk cache
[  206.983253][ T7286] BTRFS info (device loop0): setting nodatasum
[  206.989436][ T7286] BTRFS info (device loop0): allowing degraded mounts
[  206.996245][ T7286] BTRFS info (device loop0): enabling disk space caching
[  207.003259][ T7286] BTRFS info (device loop0): disk space caching is enabled
[  207.024877][ T7286] BTRFS info (device loop0): enabling ssd optimizations
[  207.031828][ T7286] BTRFS info (device loop0): auto enabling async discard
[  207.039836][ T7286] BTRFS info (device loop0): rebuilding free space tree
[  207.051731][ T7286] BTRFS info (device loop0): disabling free space tree
[  207.058687][ T7286] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  207.068375][ T7286] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  7286] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7286] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7286] chdir("./file0")            = 0
[pid  7286] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7286] close(4)                    = 0
[pid  7286] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7285] <... futex resumed>)        = 0
[  207.081568][ T7286] BTRFS info (device loop0): checking UUID tree
[pid  7286] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable)
[pid  7285] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7286] open("./file0", O_RDONLY <unfinished ...>
[pid  7285] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7286] <... open resumed>)         = 4
[pid  7286] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7286] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7285] <... futex resumed>)        = 0
[pid  7285] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7286] <... futex resumed>)        = 0
[pid  7285] <... futex resumed>)        = 1
[pid  7286] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  7285] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7286] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7286] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7285] <... futex resumed>)        = 0
[pid  7285] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7285] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7286] <... futex resumed>)        = 0
[pid  7286] 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}} <unfinished ...>
[pid  7285] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  7285] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7285] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7285] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7285] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7285] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 7304 attached
 => {parent_tid=[335]}, 88) = 335
[pid  7285] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7304] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  7285] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7285] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7285] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7304] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  7304] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7304] open("./file0", O_RDONLY)   = 5
[pid  7304] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7285] <... futex resumed>)        = 0
[pid  7304] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7285] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7304] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7285] <... futex resumed>)        = 0
[pid  7304] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  207.162637][ T7286] BTRFS info (device loop0): balance: start -d -m
[  207.170903][ T7286] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  207.201322][ T7286] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7285] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7304] <... ioctl resumed>)        = 0
[pid  7304] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  207.360538][ T7286] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  207.385282][ T7286] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  7304] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7286] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7286] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7286] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7285] close(3)                    = 0
[pid  7285] close(4)                    = 0
[pid  7285] close(5)                    = 0
[pid  7285] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7285] close(7)                    = -1 EBADF (Bad file descriptor)
[  207.405024][ T7286] BTRFS info (device loop0): balance: ended with status: 0
[pid  7285] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7285] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7285] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7285] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7285] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7285] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7285] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7285] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7285] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7285] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7285] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7285] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7285] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7285] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7285] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7285] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7285] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7285] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7285] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7285] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7285] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7285] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7285] exit_group(0 <unfinished ...>
[pid  7304] <... futex resumed>)        = ?
[pid  7286] <... futex resumed>)        = ?
[pid  7285] <... exit_group resumed>)   = ?
[pid  7304] +++ exited with 0 +++
[pid  7286] +++ exited with 0 +++
[pid  7285] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=333, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=44 /* 0.44 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./110", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./110", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./110/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./110/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./110/binderfs")    = 0
[pid  5073] umount2("./110/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./110/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./110/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./110/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./110/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./110/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./110")              = 0
[pid  5073] mkdir("./111", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7305 attached
 <unfinished ...>
[pid  7305] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 336
[pid  7305] chdir("./111")              = 0
[pid  7305] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7305] setpgid(0, 0)               = 0
[pid  7305] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7305] write(3, "1000", 4)         = 4
[pid  7305] close(3)                    = 0
[pid  7305] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7305] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7305] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7305] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7305] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7305] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7306 attached
 => {parent_tid=[337]}, 88) = 337
[pid  7306] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  7305] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7306] set_robust_list(0x7f8785c4c9a0, 24) = 0
[pid  7305] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7306] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7305] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7306] memfd_create("syzkaller", 0 <unfinished ...>
[pid  7305] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7306] <... memfd_create resumed>) = 3
[pid  7306] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7306] 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) = 16777216
[pid  7306] munmap(0x7f877d82c000, 138412032) = 0
[pid  7306] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7306] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7306] close(3)                    = 0
[pid  7306] mkdir("./file0", 0777)      = 0
[  207.947193][ T7306] loop0: detected capacity change from 0 to 32768
[  207.971478][ T7306] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7306)
[  207.988846][ T7306] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  207.998140][ T7306] BTRFS info (device loop0): force clearing of disk cache
[  208.005276][ T7306] BTRFS info (device loop0): setting nodatasum
[  208.011420][ T7306] BTRFS info (device loop0): allowing degraded mounts
[  208.018220][ T7306] BTRFS info (device loop0): enabling disk space caching
[  208.025302][ T7306] BTRFS info (device loop0): disk space caching is enabled
[  208.047798][ T7306] BTRFS info (device loop0): enabling ssd optimizations
[  208.054921][ T7306] BTRFS info (device loop0): auto enabling async discard
[  208.063249][ T7306] BTRFS info (device loop0): rebuilding free space tree
[  208.075904][ T7306] BTRFS info (device loop0): disabling free space tree
[  208.082797][ T7306] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  7306] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7306] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7306] chdir("./file0")            = 0
[pid  7306] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7306] close(4)                    = 0
[pid  7306] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7305] <... futex resumed>)        = 0
[pid  7305] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7305] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7306] open("./file0", O_RDONLY)   = 4
[pid  7306] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7305] <... futex resumed>)        = 0
[pid  7306] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7305] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7306] <... futex resumed>)        = 0
[pid  7306] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  7306] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7306] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[  208.092546][ T7306] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  208.105774][ T7306] BTRFS info (device loop0): checking UUID tree
[pid  7305] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable)
[pid  7305] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7306] <... futex resumed>)        = 0
[pid  7305] <... futex resumed>)        = 1
[pid  7306] 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}} <unfinished ...>
[pid  7305] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7305] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7305] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7305] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7305] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7305] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[338]}, 88) = 338
./strace-static-x86_64: Process 7324 attached
[pid  7305] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7324] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7305] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7324] <... rseq resumed>)         = 0
[pid  7324] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  7305] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7324] <... set_robust_list resumed>) = 0
[pid  7305] <... futex resumed>)        = 0
[pid  7324] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7305] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7324] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7324] open("./file0", O_RDONLY)   = 5
[pid  7324] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7305] <... futex resumed>)        = 0
[pid  7324] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7305] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7324] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7305] <... futex resumed>)        = 0
[pid  7324] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  208.168891][ T7306] BTRFS info (device loop0): balance: start -d -m
[  208.180078][ T7306] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  208.205821][ T7306] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7305] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[  208.323641][ T7306] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  7324] <... ioctl resumed>)        = 0
[pid  7324] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7324] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7306] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7306] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7306] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7305] close(3)                    = 0
[pid  7305] close(4)                    = 0
[pid  7305] close(5)                    = 0
[pid  7305] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7305] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7305] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7305] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7305] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7305] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7305] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7305] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7305] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7305] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7305] close(16)                   = -1 EBADF (Bad file descriptor)
[  208.400424][ T7306] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  208.420888][ T7306] BTRFS info (device loop0): balance: ended with status: 0
[pid  7305] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7305] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7305] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7305] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7305] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7305] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7305] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7305] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7305] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7305] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7305] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7305] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7305] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7305] exit_group(0 <unfinished ...>
[pid  7324] <... futex resumed>)        = ?
[pid  7324] +++ exited with 0 +++
[pid  7306] <... futex resumed>)        = ?
[pid  7305] <... exit_group resumed>)   = ?
[pid  7306] +++ exited with 0 +++
[pid  7305] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=336, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=41 /* 0.41 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./111", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./111", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./111/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./111/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./111/binderfs")    = 0
[pid  5073] umount2("./111/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./111/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./111/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./111/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./111/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./111/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./111")              = 0
[pid  5073] mkdir("./112", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7325 attached
, child_tidptr=0x5555570a9690) = 339
[pid  7325] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7325] chdir("./112")              = 0
[pid  7325] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7325] setpgid(0, 0)               = 0
[pid  7325] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7325] write(3, "1000", 4)         = 4
[pid  7325] close(3)                    = 0
[pid  7325] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7325] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7325] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7325] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7325] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7325] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7326 attached
 <unfinished ...>
[pid  7326] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7325] <... clone3 resumed> => {parent_tid=[340]}, 88) = 340
[pid  7326] <... rseq resumed>)         = 0
[pid  7325] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7326] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7325] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7326] <... set_robust_list resumed>) = 0
[pid  7325] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7326] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7325] <... futex resumed>)        = 0
[pid  7326] memfd_create("syzkaller", 0 <unfinished ...>
[pid  7325] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7326] <... memfd_create resumed>) = 3
[pid  7326] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7326] 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) = 16777216
[pid  7326] munmap(0x7f877d82c000, 138412032) = 0
[pid  7326] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7326] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7326] close(3)                    = 0
[pid  7326] mkdir("./file0", 0777)      = 0
[  209.011875][ T7326] loop0: detected capacity change from 0 to 32768
[  209.035923][ T7326] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7326)
[  209.050947][ T7326] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  209.060238][ T7326] BTRFS info (device loop0): force clearing of disk cache
[  209.067462][ T7326] BTRFS info (device loop0): setting nodatasum
[  209.073626][ T7326] BTRFS info (device loop0): allowing degraded mounts
[  209.080676][ T7326] BTRFS info (device loop0): enabling disk space caching
[  209.087752][ T7326] BTRFS info (device loop0): disk space caching is enabled
[  209.109466][ T7326] BTRFS info (device loop0): enabling ssd optimizations
[  209.116469][ T7326] BTRFS info (device loop0): auto enabling async discard
[  209.124643][ T7326] BTRFS info (device loop0): rebuilding free space tree
[  209.137963][ T7326] BTRFS info (device loop0): disabling free space tree
[  209.144902][ T7326] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  7326] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7326] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7326] chdir("./file0")            = 0
[pid  7326] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7326] close(4)                    = 0
[pid  7326] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7325] <... futex resumed>)        = 0
[  209.154572][ T7326] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  209.167543][ T7326] BTRFS info (device loop0): checking UUID tree
[pid  7326] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7325] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7326] <... futex resumed>)        = 0
[pid  7325] <... futex resumed>)        = 1
[pid  7326] open("./file0", O_RDONLY <unfinished ...>
[pid  7325] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7326] <... open resumed>)         = 4
[pid  7326] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7326] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7325] <... futex resumed>)        = 0
[pid  7325] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7326] <... futex resumed>)        = 0
[pid  7325] <... futex resumed>)        = 1
[pid  7326] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  7325] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7326] <... ioctl resumed>)        = 0
[pid  7326] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7325] <... futex resumed>)        = 0
[pid  7326] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7325] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7326] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7325] <... futex resumed>)        = 0
[pid  7326] 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}} <unfinished ...>
[pid  7325] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7325] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7325] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7325] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7325] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7325] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[341]}, 88) = 341
[pid  7325] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7325] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7325] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 7344 attached
 <unfinished ...>
[pid  7344] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  7344] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  7344] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7344] open("./file0", O_RDONLY)   = 5
[pid  7344] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7325] <... futex resumed>)        = 0
[pid  7344] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7325] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7344] <... futex resumed>)        = 0
[pid  7325] <... futex resumed>)        = 1
[pid  7344] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  209.249596][ T7326] BTRFS info (device loop0): balance: start -d -m
[  209.258241][ T7326] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  209.287586][ T7326] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7325] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7325] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  7325] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  7344] <... ioctl resumed>)        = 0
[pid  7344] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  209.433635][ T7326] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  209.458732][ T7326] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  7344] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7326] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7326] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7326] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7325] close(3)                    = 0
[pid  7325] close(4)                    = 0
[pid  7325] close(5)                    = 0
[pid  7325] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7325] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7325] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7325] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7325] close(10)                   = -1 EBADF (Bad file descriptor)
[  209.478165][ T7326] BTRFS info (device loop0): balance: ended with status: 0
[pid  7325] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7325] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7325] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7325] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7325] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7325] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7325] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7325] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7325] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7325] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7325] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7325] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7325] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7325] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7325] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7325] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7325] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7325] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7325] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7325] exit_group(0 <unfinished ...>
[pid  7344] <... futex resumed>)        = ?
[pid  7326] <... futex resumed>)        = ?
[pid  7325] <... exit_group resumed>)   = ?
[pid  7344] +++ exited with 0 +++
[pid  7326] +++ exited with 0 +++
[pid  7325] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=339, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=39 /* 0.39 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./112", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./112", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./112/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./112/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./112/binderfs")    = 0
[pid  5073] umount2("./112/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./112/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./112/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./112/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./112/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./112/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./112")              = 0
[pid  5073] mkdir("./113", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555570a9690) = 342
./strace-static-x86_64: Process 7345 attached
[pid  7345] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7345] chdir("./113")              = 0
[pid  7345] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7345] setpgid(0, 0)               = 0
[pid  7345] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7345] write(3, "1000", 4)         = 4
[pid  7345] close(3)                    = 0
[pid  7345] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7345] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7345] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7345] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7345] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7345] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7346 attached
 <unfinished ...>
[pid  7346] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7345] <... clone3 resumed> => {parent_tid=[343]}, 88) = 343
[pid  7346] <... rseq resumed>)         = 0
[pid  7345] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7346] set_robust_list(0x7f8785c4c9a0, 24) = 0
[pid  7345] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7346] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7345] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7346] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7345] <... futex resumed>)        = 0
[pid  7346] memfd_create("syzkaller", 0 <unfinished ...>
[pid  7345] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7346] <... memfd_create resumed>) = 3
[pid  7346] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7346] 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) = 16777216
[pid  7346] munmap(0x7f877d82c000, 138412032) = 0
[pid  7346] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7346] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7346] close(3)                    = 0
[pid  7346] mkdir("./file0", 0777)      = 0
[  210.098074][ T7346] loop0: detected capacity change from 0 to 32768
[  210.114731][ T7346] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7346)
[  210.131752][ T7346] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  210.141053][ T7346] BTRFS info (device loop0): force clearing of disk cache
[  210.148212][ T7346] BTRFS info (device loop0): setting nodatasum
[  210.154557][ T7346] BTRFS info (device loop0): allowing degraded mounts
[  210.161545][ T7346] BTRFS info (device loop0): enabling disk space caching
[  210.168876][ T7346] BTRFS info (device loop0): disk space caching is enabled
[  210.190204][ T7346] BTRFS info (device loop0): enabling ssd optimizations
[  210.197238][ T7346] BTRFS info (device loop0): auto enabling async discard
[  210.205274][ T7346] BTRFS info (device loop0): rebuilding free space tree
[  210.218001][ T7346] BTRFS info (device loop0): disabling free space tree
[  210.224928][ T7346] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  210.234749][ T7346] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  7346] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7346] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7346] chdir("./file0")            = 0
[pid  7346] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7346] close(4)                    = 0
[pid  7346] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[  210.247648][ T7346] BTRFS info (device loop0): checking UUID tree
[pid  7346] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7345] <... futex resumed>)        = 0
[pid  7345] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7345] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7346] <... futex resumed>)        = 0
[pid  7346] open("./file0", O_RDONLY)   = 4
[pid  7346] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7345] <... futex resumed>)        = 0
[pid  7346] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7345] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7346] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7346] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  7345] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7346] <... ioctl resumed>)        = 0
[pid  7346] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7345] <... futex resumed>)        = 0
[pid  7346] 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}} <unfinished ...>
[pid  7345] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  210.355898][ T7346] BTRFS info (device loop0): balance: start -d -m
[  210.366956][ T7346] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  7345] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7345] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7345] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7345] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7345] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7345] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[344]}, 88) = 344
[pid  7345] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7345] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7345] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 7364 attached
 <unfinished ...>
[pid  7364] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  7364] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  7364] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7364] open("./file0", O_RDONLY)   = 5
[pid  7364] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7345] <... futex resumed>)        = 0
[pid  7364] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7345] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7364] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7345] <... futex resumed>)        = 0
[pid  7364] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  210.396941][ T7346] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7345] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7364] <... ioctl resumed>)        = 0
[pid  7364] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  210.512416][ T7346] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  210.539417][ T7346] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  7364] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7346] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7346] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7346] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7345] close(3)                    = 0
[pid  7345] close(4)                    = 0
[pid  7345] close(5)                    = 0
[pid  7345] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7345] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7345] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7345] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7345] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7345] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7345] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7345] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7345] close(14)                   = -1 EBADF (Bad file descriptor)
[  210.559634][ T7346] BTRFS info (device loop0): balance: ended with status: 0
[pid  7345] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7345] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7345] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7345] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7345] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7345] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7345] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7345] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7345] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7345] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7345] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7345] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7345] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7345] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7345] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7345] exit_group(0)               = ?
[pid  7364] <... futex resumed>)        = ?
[pid  7346] <... futex resumed>)        = ?
[pid  7364] +++ exited with 0 +++
[pid  7346] +++ exited with 0 +++
[pid  7345] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=342, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=42 /* 0.42 s */} ---
[pid  5073] umount2("./113", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./113", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./113/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./113/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./113/binderfs")    = 0
[pid  5073] umount2("./113/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./113/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./113/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./113/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./113/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./113/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./113")              = 0
[pid  5073] mkdir("./114", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7365 attached
, child_tidptr=0x5555570a9690) = 345
[pid  7365] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7365] chdir("./114")              = 0
[pid  7365] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7365] setpgid(0, 0)               = 0
[pid  7365] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7365] write(3, "1000", 4)         = 4
[pid  7365] close(3)                    = 0
[pid  7365] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7365] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7365] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7365] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7365] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7365] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7366 attached
 <unfinished ...>
[pid  7366] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  7365] <... clone3 resumed> => {parent_tid=[346]}, 88) = 346
[pid  7366] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7365] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7366] <... set_robust_list resumed>) = 0
[pid  7365] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7366] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7365] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7366] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7365] <... futex resumed>)        = 0
[pid  7366] memfd_create("syzkaller", 0 <unfinished ...>
[pid  7365] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7366] <... memfd_create resumed>) = 3
[pid  7366] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7366] 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) = 16777216
[pid  7366] munmap(0x7f877d82c000, 138412032) = 0
[pid  7366] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7366] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7366] close(3)                    = 0
[pid  7366] mkdir("./file0", 0777)      = 0
[  211.139958][ T7366] loop0: detected capacity change from 0 to 32768
[  211.166301][ T7366] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7366)
[  211.183470][ T7366] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  211.192724][ T7366] BTRFS info (device loop0): force clearing of disk cache
[  211.199893][ T7366] BTRFS info (device loop0): setting nodatasum
[  211.206077][ T7366] BTRFS info (device loop0): allowing degraded mounts
[  211.212828][ T7366] BTRFS info (device loop0): enabling disk space caching
[  211.219873][ T7366] BTRFS info (device loop0): disk space caching is enabled
[  211.241900][ T7366] BTRFS info (device loop0): enabling ssd optimizations
[  211.248929][ T7366] BTRFS info (device loop0): auto enabling async discard
[  211.256999][ T7366] BTRFS info (device loop0): rebuilding free space tree
[  211.268742][ T7366] BTRFS info (device loop0): disabling free space tree
[  211.275764][ T7366] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  7366] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7366] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7366] chdir("./file0")            = 0
[pid  7366] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7366] close(4)                    = 0
[pid  7366] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7365] <... futex resumed>)        = 0
[pid  7366] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable)
[pid  7365] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7366] open("./file0", O_RDONLY <unfinished ...>
[pid  7365] <... futex resumed>)        = 0
[pid  7365] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7366] <... open resumed>)         = 4
[pid  7366] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7366] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7365] <... futex resumed>)        = 0
[pid  7365] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7366] <... futex resumed>)        = 0
[pid  7365] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7366] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[  211.285442][ T7366] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  211.298903][ T7366] BTRFS info (device loop0): checking UUID tree
[pid  7366] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7365] <... futex resumed>)        = 0
[pid  7365] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7365] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7366] <... futex resumed>)        = 1
[pid  7366] 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}} <unfinished ...>
[pid  7365] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  7365] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  7365] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  7365] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7365] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7365] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7365] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7365] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[347]}, 88) = 347
[pid  7365] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7365] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7365] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 7384 attached
 <unfinished ...>
[pid  7384] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  7384] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  7384] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7384] open("./file0", O_RDONLY)   = 5
[pid  7384] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7365] <... futex resumed>)        = 0
[pid  7384] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7365] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7384] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7365] <... futex resumed>)        = 0
[pid  7384] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  211.381707][ T7366] BTRFS info (device loop0): balance: start -d -m
[  211.393993][ T7366] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  7365] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7384] <... ioctl resumed>)        = 0
[pid  7384] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  211.548812][ T7366] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[  211.582692][ T7366] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  7384] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7366] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7366] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7366] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7365] close(3)                    = 0
[pid  7365] close(4)                    = 0
[pid  7365] close(5)                    = 0
[pid  7365] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7365] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7365] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7365] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7365] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7365] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7365] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7365] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7365] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7365] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7365] close(16)                   = -1 EBADF (Bad file descriptor)
[  211.606992][ T7366] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  211.626463][ T7366] BTRFS info (device loop0): balance: ended with status: 0
[pid  7365] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7365] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7365] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7365] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7365] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7365] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7365] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7365] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7365] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7365] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7365] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7365] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7365] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7365] exit_group(0 <unfinished ...>
[pid  7384] <... futex resumed>)        = ?
[pid  7365] <... exit_group resumed>)   = ?
[pid  7384] +++ exited with 0 +++
[pid  7366] <... futex resumed>)        = ?
[pid  7366] +++ exited with 0 +++
[pid  7365] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=345, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=43 /* 0.43 s */} ---
[pid  5073] umount2("./114", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./114", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./114/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./114/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./114/binderfs")    = 0
[pid  5073] umount2("./114/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./114/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./114/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./114/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./114/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./114/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./114")              = 0
[pid  5073] mkdir("./115", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7385 attached
, child_tidptr=0x5555570a9690) = 348
[pid  7385] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7385] chdir("./115")              = 0
[pid  7385] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7385] setpgid(0, 0)               = 0
[pid  7385] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7385] write(3, "1000", 4)         = 4
[pid  7385] close(3)                    = 0
[pid  7385] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7385] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7385] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7385] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7385] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7385] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7386 attached
 <unfinished ...>
[pid  7386] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  7385] <... clone3 resumed> => {parent_tid=[349]}, 88) = 349
[pid  7386] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7385] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7386] <... set_robust_list resumed>) = 0
[pid  7385] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7386] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7385] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7386] memfd_create("syzkaller", 0 <unfinished ...>
[pid  7385] <... futex resumed>)        = 0
[pid  7385] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7386] <... memfd_create resumed>) = 3
[pid  7386] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[  212.105676][ T4464] Bluetooth: hci0: command 0x0406 tx timeout
[pid  7386] 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) = 16777216
[pid  7386] munmap(0x7f877d82c000, 138412032) = 0
[pid  7386] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7386] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7386] close(3)                    = 0
[pid  7386] mkdir("./file0", 0777)      = 0
[  212.193021][ T7386] loop0: detected capacity change from 0 to 32768
[  212.213240][ T7386] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7386)
[  212.230308][ T7386] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  212.239582][ T7386] BTRFS info (device loop0): force clearing of disk cache
[  212.246729][ T7386] BTRFS info (device loop0): setting nodatasum
[  212.252872][ T7386] BTRFS info (device loop0): allowing degraded mounts
[  212.259665][ T7386] BTRFS info (device loop0): enabling disk space caching
[  212.266784][ T7386] BTRFS info (device loop0): disk space caching is enabled
[  212.290108][ T7386] BTRFS info (device loop0): enabling ssd optimizations
[  212.297097][ T7386] BTRFS info (device loop0): auto enabling async discard
[  212.305711][ T7386] BTRFS info (device loop0): rebuilding free space tree
[  212.317958][ T7386] BTRFS info (device loop0): disabling free space tree
[  212.324986][ T7386] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  7386] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7386] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7386] chdir("./file0")            = 0
[pid  7386] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7386] close(4)                    = 0
[pid  7386] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7385] <... futex resumed>)        = 0
[pid  7386] <... futex resumed>)        = 1
[pid  7385] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7385] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7386] open("./file0", O_RDONLY)   = 4
[  212.334661][ T7386] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  212.347535][ T7386] BTRFS info (device loop0): checking UUID tree
[pid  7386] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7385] <... futex resumed>)        = 0
[pid  7385] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7385] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7386] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  7386] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7385] <... futex resumed>)        = 0
[pid  7386] 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}} <unfinished ...>
[pid  7385] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7385] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7385] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7385] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7385] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7385] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7385] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[350]}, 88) = 350
[pid  7385] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7385] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7385] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 7404 attached
 <unfinished ...>
[pid  7404] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  7404] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  7404] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7404] open("./file0", O_RDONLY)   = 5
[pid  7404] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7385] <... futex resumed>)        = 0
[pid  7404] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7385] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  212.418320][ T7386] BTRFS info (device loop0): balance: start -d -m
[  212.427653][ T7386] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  212.451312][ T7386] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7385] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7404] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7404] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  7385] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  7385] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[  212.564566][ T7386] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  7404] <... ioctl resumed>)        = 0
[pid  7404] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7404] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7386] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7386] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7386] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7385] close(3)                    = 0
[pid  7385] close(4)                    = 0
[pid  7385] close(5)                    = 0
[pid  7385] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7385] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7385] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7385] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7385] close(10)                   = -1 EBADF (Bad file descriptor)
[  212.652445][ T7386] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  212.671728][ T7386] BTRFS info (device loop0): balance: ended with status: 0
[pid  7385] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7385] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7385] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7385] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7385] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7385] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7385] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7385] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7385] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7385] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7385] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7385] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7385] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7385] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7385] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7385] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7385] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7385] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7385] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7385] exit_group(0)               = ?
[pid  7404] <... futex resumed>)        = ?
[pid  7386] <... futex resumed>)        = ?
[pid  7404] +++ exited with 0 +++
[pid  7386] +++ exited with 0 +++
[pid  7385] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=348, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=42 /* 0.42 s */} ---
[pid  5073] umount2("./115", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./115", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./115/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./115/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./115/binderfs")    = 0
[pid  5073] umount2("./115/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./115/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./115/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./115/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./115/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./115/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./115")              = 0
[pid  5073] mkdir("./116", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7405 attached
 <unfinished ...>
[pid  7405] set_robust_list(0x5555570a96a0, 24 <unfinished ...>
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 351
[pid  7405] <... set_robust_list resumed>) = 0
[pid  7405] chdir("./116")              = 0
[pid  7405] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7405] setpgid(0, 0)               = 0
[pid  7405] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7405] write(3, "1000", 4)         = 4
[pid  7405] close(3)                    = 0
[pid  7405] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7405] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7405] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7405] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7405] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7405] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7406 attached
 <unfinished ...>
[pid  7406] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7405] <... clone3 resumed> => {parent_tid=[352]}, 88) = 352
[pid  7406] <... rseq resumed>)         = 0
[pid  7405] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7406] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7405] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7406] <... set_robust_list resumed>) = 0
[pid  7405] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7406] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7405] <... futex resumed>)        = 0
[pid  7406] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7405] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7406] memfd_create("syzkaller", 0) = 3
[pid  7406] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7406] 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) = 16777216
[pid  7406] munmap(0x7f877d82c000, 138412032) = 0
[pid  7406] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7406] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7406] close(3)                    = 0
[pid  7406] mkdir("./file0", 0777)      = 0
[  213.321882][ T7406] loop0: detected capacity change from 0 to 32768
[  213.336554][ T7406] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7406)
[  213.352764][ T7406] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  213.362190][ T7406] BTRFS info (device loop0): force clearing of disk cache
[  213.369364][ T7406] BTRFS info (device loop0): setting nodatasum
[  213.375574][ T7406] BTRFS info (device loop0): allowing degraded mounts
[  213.382351][ T7406] BTRFS info (device loop0): enabling disk space caching
[  213.389426][ T7406] BTRFS info (device loop0): disk space caching is enabled
[  213.411472][ T7406] BTRFS info (device loop0): enabling ssd optimizations
[  213.418460][ T7406] BTRFS info (device loop0): auto enabling async discard
[  213.427020][ T7406] BTRFS info (device loop0): rebuilding free space tree
[  213.438910][ T7406] BTRFS info (device loop0): disabling free space tree
[  213.445899][ T7406] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  213.455568][ T7406] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  7406] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7406] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7406] chdir("./file0")            = 0
[pid  7406] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7406] close(4)                    = 0
[pid  7406] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7405] <... futex resumed>)        = 0
[pid  7406] <... futex resumed>)        = 1
[pid  7405] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7406] open("./file0", O_RDONLY <unfinished ...>
[pid  7405] <... futex resumed>)        = 0
[pid  7405] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7406] <... open resumed>)         = 4
[  213.468847][ T7406] BTRFS info (device loop0): checking UUID tree
[pid  7406] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7405] <... futex resumed>)        = 0
[pid  7405] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7406] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  7405] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7406] <... ioctl resumed>)        = 0
[pid  7406] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7405] <... futex resumed>)        = 0
[pid  7406] <... futex resumed>)        = 1
[pid  7405] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7406] 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}} <unfinished ...>
[pid  7405] <... futex resumed>)        = 0
[pid  7405] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7405] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7405] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7405] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7405] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7405] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 7424 attached
 <unfinished ...>
[pid  7424] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  7424] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  7405] <... clone3 resumed> => {parent_tid=[353]}, 88) = 353
[pid  7424] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7405] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7424] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7405] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7405] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7424] <... futex resumed>)        = 0
[pid  7405] <... futex resumed>)        = 1
[pid  7424] open("./file0", O_RDONLY <unfinished ...>
[pid  7405] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7424] <... open resumed>)         = 5
[pid  7424] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7405] <... futex resumed>)        = 0
[pid  7424] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7405] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7424] <... futex resumed>)        = 0
[pid  7405] <... futex resumed>)        = 1
[pid  7424] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  213.526754][ T7406] BTRFS info (device loop0): balance: start -d -m
[  213.535264][ T7406] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  213.563819][ T7406] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7405] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7424] <... ioctl resumed>)        = 0
[pid  7424] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  213.726237][ T7406] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  213.753441][ T7406] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  7424] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7406] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7406] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7405] close(3 <unfinished ...>
[pid  7406] <... futex resumed>)        = 0
[pid  7405] <... close resumed>)        = 0
[pid  7406] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7405] close(4)                    = 0
[pid  7405] close(5)                    = 0
[pid  7405] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7405] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7405] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7405] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7405] close(10)                   = -1 EBADF (Bad file descriptor)
[  213.772604][ T7406] BTRFS info (device loop0): balance: ended with status: 0
[pid  7405] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7405] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7405] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7405] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7405] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7405] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7405] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7405] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7405] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7405] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7405] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7405] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7405] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7405] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7405] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7405] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7405] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7405] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7405] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7405] exit_group(0 <unfinished ...>
[pid  7424] <... futex resumed>)        = ?
[pid  7406] <... futex resumed>)        = ?
[pid  7405] <... exit_group resumed>)   = ?
[pid  7424] +++ exited with 0 +++
[pid  7406] +++ exited with 0 +++
[pid  7405] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=351, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=42 /* 0.42 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./116", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./116", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./116/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./116/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./116/binderfs")    = 0
[pid  5073] umount2("./116/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./116/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./116/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./116/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./116/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./116/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./116")              = 0
[pid  5073] mkdir("./117", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7425 attached
 <unfinished ...>
[pid  7425] set_robust_list(0x5555570a96a0, 24 <unfinished ...>
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 354
[pid  7425] <... set_robust_list resumed>) = 0
[pid  7425] chdir("./117")              = 0
[pid  7425] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7425] setpgid(0, 0)               = 0
[pid  7425] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7425] write(3, "1000", 4)         = 4
[pid  7425] close(3)                    = 0
[pid  7425] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7425] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7425] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7425] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7425] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7425] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7426 attached
 <unfinished ...>
[pid  7426] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  7425] <... clone3 resumed> => {parent_tid=[355]}, 88) = 355
[pid  7426] set_robust_list(0x7f8785c4c9a0, 24) = 0
[pid  7425] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7426] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7425] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7426] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7425] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7426] memfd_create("syzkaller", 0 <unfinished ...>
[pid  7425] <... futex resumed>)        = 0
[pid  7425] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7426] <... memfd_create resumed>) = 3
[pid  7426] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7426] 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) = 16777216
[pid  7426] munmap(0x7f877d82c000, 138412032) = 0
[pid  7426] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7426] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7426] close(3)                    = 0
[pid  7426] mkdir("./file0", 0777)      = 0
[  214.396679][ T7426] loop0: detected capacity change from 0 to 32768
[  214.421195][ T7426] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7426)
[  214.437309][ T7426] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  214.446570][ T7426] BTRFS info (device loop0): force clearing of disk cache
[  214.453663][ T7426] BTRFS info (device loop0): setting nodatasum
[  214.459844][ T7426] BTRFS info (device loop0): allowing degraded mounts
[  214.466697][ T7426] BTRFS info (device loop0): enabling disk space caching
[  214.473708][ T7426] BTRFS info (device loop0): disk space caching is enabled
[  214.495762][ T7426] BTRFS info (device loop0): enabling ssd optimizations
[  214.502721][ T7426] BTRFS info (device loop0): auto enabling async discard
[  214.510822][ T7426] BTRFS info (device loop0): rebuilding free space tree
[  214.522955][ T7426] BTRFS info (device loop0): disabling free space tree
[  214.530363][ T7426] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  7426] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7426] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7426] chdir("./file0")            = 0
[pid  7426] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7426] close(4)                    = 0
[pid  7426] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7426] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7425] <... futex resumed>)        = 0
[pid  7425] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7426] <... futex resumed>)        = 0
[pid  7425] <... futex resumed>)        = 1
[pid  7425] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7426] open("./file0", O_RDONLY)   = 4
[  214.540072][ T7426] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  214.554151][ T7426] BTRFS info (device loop0): checking UUID tree
[pid  7426] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7425] <... futex resumed>)        = 0
[pid  7426] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7425] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7426] <... futex resumed>)        = 0
[pid  7425] <... futex resumed>)        = 1
[pid  7426] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  7425] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7426] <... ioctl resumed>)        = 0
[pid  7426] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7425] <... futex resumed>)        = 0
[pid  7425] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7425] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7426] 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}} <unfinished ...>
[pid  7425] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  7425] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7425] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7425] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7425] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7425] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 7444 attached
 => {parent_tid=[356]}, 88) = 356
[pid  7425] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7425] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7425] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7444] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  7444] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  7444] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7444] open("./file0", O_RDONLY)   = 5
[pid  7444] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7425] <... futex resumed>)        = 0
[pid  7444] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7425] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7444] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[  214.615940][ T7426] BTRFS info (device loop0): balance: start -d -m
[  214.624867][ T7426] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  214.650600][ T7426] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7425] <... futex resumed>)        = 0
[pid  7444] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  7425] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[  214.701154][ T7426] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  7444] <... ioctl resumed>)        = 0
[pid  7444] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7444] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7426] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7426] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7426] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7425] close(3)                    = 0
[pid  7425] close(4)                    = 0
[pid  7425] close(5)                    = 0
[pid  7425] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7425] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7425] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7425] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7425] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7425] close(11)                   = -1 EBADF (Bad file descriptor)
[  214.861570][ T7426] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  214.880628][ T7426] BTRFS info (device loop0): balance: ended with status: 0
[pid  7425] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7425] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7425] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7425] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7425] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7425] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7425] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7425] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7425] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7425] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7425] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7425] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7425] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7425] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7425] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7425] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7425] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7425] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7425] exit_group(0 <unfinished ...>
[pid  7444] <... futex resumed>)        = ?
[pid  7426] <... futex resumed>)        = ?
[pid  7425] <... exit_group resumed>)   = ?
[pid  7426] +++ exited with 0 +++
[pid  7444] +++ exited with 0 +++
[pid  7425] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=354, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=42 /* 0.42 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./117", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./117", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./117/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./117/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./117/binderfs")    = 0
[pid  5073] umount2("./117/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./117/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./117/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./117/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./117/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./117/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./117")              = 0
[pid  5073] mkdir("./118", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7445 attached
, child_tidptr=0x5555570a9690) = 357
[pid  7445] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7445] chdir("./118")              = 0
[pid  7445] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7445] setpgid(0, 0)               = 0
[pid  7445] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7445] write(3, "1000", 4)         = 4
[pid  7445] close(3)                    = 0
[pid  7445] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7445] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7445] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7445] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7445] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7445] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7446 attached
 <unfinished ...>
[pid  7446] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  7446] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7445] <... clone3 resumed> => {parent_tid=[358]}, 88) = 358
[pid  7446] <... set_robust_list resumed>) = 0
[pid  7445] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7446] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7445] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7446] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7446] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7445] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7446] <... futex resumed>)        = 0
[pid  7445] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7446] memfd_create("syzkaller", 0) = 3
[pid  7446] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7446] 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) = 16777216
[pid  7446] munmap(0x7f877d82c000, 138412032) = 0
[pid  7446] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7446] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7446] close(3)                    = 0
[pid  7446] mkdir("./file0", 0777)      = 0
[  215.651917][ T7446] loop0: detected capacity change from 0 to 32768
[  215.676981][ T7446] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7446)
[  215.694493][ T7446] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  215.703730][ T7446] BTRFS info (device loop0): force clearing of disk cache
[  215.710929][ T7446] BTRFS info (device loop0): setting nodatasum
[  215.717123][ T7446] BTRFS info (device loop0): allowing degraded mounts
[  215.723980][ T7446] BTRFS info (device loop0): enabling disk space caching
[  215.731009][ T7446] BTRFS info (device loop0): disk space caching is enabled
[  215.752929][ T7446] BTRFS info (device loop0): enabling ssd optimizations
[  215.760222][ T7446] BTRFS info (device loop0): auto enabling async discard
[  215.768548][ T7446] BTRFS info (device loop0): rebuilding free space tree
[  215.780378][ T7446] BTRFS info (device loop0): disabling free space tree
[  215.787321][ T7446] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  7446] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7446] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7446] chdir("./file0")            = 0
[pid  7446] ioctl(4, LOOP_CLR_FD)       = 0
[  215.797003][ T7446] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  215.811020][ T7446] BTRFS info (device loop0): checking UUID tree
[pid  7446] close(4)                    = 0
[pid  7446] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7445] <... futex resumed>)        = 0
[pid  7446] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable)
[pid  7445] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7446] open("./file0", O_RDONLY <unfinished ...>
[pid  7445] <... futex resumed>)        = 0
[pid  7446] <... open resumed>)         = 4
[pid  7445] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7446] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7446] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7445] <... futex resumed>)        = 0
[pid  7445] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7446] <... futex resumed>)        = 0
[pid  7445] <... futex resumed>)        = 1
[pid  7446] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  7445] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7446] <... ioctl resumed>)        = 0
[pid  7446] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7445] <... futex resumed>)        = 0
[pid  7445] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7445] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[  215.923075][ T7446] BTRFS info (device loop0): balance: start -d -m
[  215.932179][ T7446] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  7446] 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}} <unfinished ...>
[pid  7445] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  7445] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7445] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7445] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7445] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7445] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[359]}, 88) = 359
[pid  7445] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7445] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7445] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 7464 attached
 <unfinished ...>
[pid  7464] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  7464] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  7464] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7464] open("./file0", O_RDONLY)   = 5
[pid  7464] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7445] <... futex resumed>)        = 0
[pid  7464] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7445] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7464] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7445] <... futex resumed>)        = 0
[pid  7464] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  215.963846][ T7446] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7445] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7464] <... ioctl resumed>)        = 0
[pid  7464] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  216.111278][ T7446] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  216.135550][ T7446] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  216.154481][ T7446] BTRFS info (device loop0): balance: ended with status: 0
[pid  7464] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7446] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7446] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7445] close(3 <unfinished ...>
[pid  7446] <... futex resumed>)        = 0
[pid  7445] <... close resumed>)        = 0
[pid  7446] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7445] close(4)                    = 0
[pid  7445] close(5)                    = 0
[pid  7445] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7445] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7445] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7445] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7445] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7445] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7445] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7445] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7445] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7445] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7445] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7445] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7445] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7445] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7445] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7445] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7445] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7445] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7445] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7445] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7445] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7445] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7445] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7445] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7445] exit_group(0 <unfinished ...>
[pid  7464] <... futex resumed>)        = ?
[pid  7446] <... futex resumed>)        = ?
[pid  7445] <... exit_group resumed>)   = ?
[pid  7464] +++ exited with 0 +++
[pid  7446] +++ exited with 0 +++
[pid  7445] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=357, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=44 /* 0.44 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./118", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./118", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./118/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./118/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./118/binderfs")    = 0
[pid  5073] umount2("./118/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./118/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./118/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./118/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./118/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./118/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./118")              = 0
[pid  5073] mkdir("./119", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7465 attached
, child_tidptr=0x5555570a9690) = 360
[pid  7465] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7465] chdir("./119")              = 0
[pid  7465] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7465] setpgid(0, 0)               = 0
[pid  7465] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7465] write(3, "1000", 4)         = 4
[pid  7465] close(3)                    = 0
[pid  7465] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7465] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7465] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7465] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7465] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7465] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7466 attached
 <unfinished ...>
[pid  7466] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7465] <... clone3 resumed> => {parent_tid=[361]}, 88) = 361
[pid  7466] <... rseq resumed>)         = 0
[pid  7465] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7466] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7465] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7466] <... set_robust_list resumed>) = 0
[pid  7465] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7466] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7465] <... futex resumed>)        = 0
[pid  7466] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7466] memfd_create("syzkaller", 0 <unfinished ...>
[pid  7465] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7466] <... memfd_create resumed>) = 3
[pid  7466] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7466] 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) = 16777216
[pid  7466] munmap(0x7f877d82c000, 138412032) = 0
[pid  7466] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7466] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7466] close(3)                    = 0
[pid  7466] mkdir("./file0", 0777)      = 0
[  216.858980][ T7466] loop0: detected capacity change from 0 to 32768
[  216.872459][ T7466] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7466)
[  216.888887][ T7466] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  216.898182][ T7466] BTRFS info (device loop0): force clearing of disk cache
[  216.905386][ T7466] BTRFS info (device loop0): setting nodatasum
[  216.911532][ T7466] BTRFS info (device loop0): allowing degraded mounts
[  216.918369][ T7466] BTRFS info (device loop0): enabling disk space caching
[  216.925425][ T7466] BTRFS info (device loop0): disk space caching is enabled
[  216.947283][ T7466] BTRFS info (device loop0): enabling ssd optimizations
[  216.954315][ T7466] BTRFS info (device loop0): auto enabling async discard
[  216.962176][ T7466] BTRFS info (device loop0): rebuilding free space tree
[  216.975479][ T7466] BTRFS info (device loop0): disabling free space tree
[  216.982366][ T7466] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  216.992283][ T7466] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  7466] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7466] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7466] chdir("./file0")            = 0
[pid  7466] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7466] close(4)                    = 0
[pid  7466] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7466] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7465] <... futex resumed>)        = 0
[pid  7465] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7466] <... futex resumed>)        = 0
[pid  7465] <... futex resumed>)        = 1
[pid  7466] open("./file0", O_RDONLY <unfinished ...>
[pid  7465] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7466] <... open resumed>)         = 4
[  217.006480][ T7466] BTRFS info (device loop0): checking UUID tree
[pid  7466] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7465] <... futex resumed>)        = 0
[pid  7465] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7465] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7466] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  7466] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7465] <... futex resumed>)        = 0
[pid  7465] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7466] 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}} <unfinished ...>
[pid  7465] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7465] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7465] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7465] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7465] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7465] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 7484 attached
 <unfinished ...>
[pid  7484] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7465] <... clone3 resumed> => {parent_tid=[362]}, 88) = 362
[pid  7484] <... rseq resumed>)         = 0
[pid  7465] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7484] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  7465] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7484] <... set_robust_list resumed>) = 0
[pid  7465] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7484] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7465] <... futex resumed>)        = 0
[pid  7484] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7465] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7484] open("./file0", O_RDONLY)   = 5
[pid  7484] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7465] <... futex resumed>)        = 0
[pid  7465] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7484] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  7465] <... futex resumed>)        = 0
[  217.072200][ T7466] BTRFS info (device loop0): balance: start -d -m
[  217.082529][ T7466] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  217.111848][ T7466] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7465] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7484] <... ioctl resumed>)        = 0
[pid  7484] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  217.267370][ T7466] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  217.291280][ T7466] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  217.310374][ T7466] BTRFS info (device loop0): balance: ended with status: 0
[pid  7484] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7466] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7466] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7465] close(3 <unfinished ...>
[pid  7466] <... futex resumed>)        = 0
[pid  7465] <... close resumed>)        = 0
[pid  7466] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7465] close(4)                    = 0
[pid  7465] close(5)                    = 0
[pid  7465] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7465] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7465] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7465] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7465] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7465] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7465] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7465] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7465] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7465] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7465] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7465] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7465] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7465] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7465] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7465] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7465] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7465] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7465] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7465] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7465] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7465] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7465] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7465] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7465] exit_group(0 <unfinished ...>
[pid  7484] <... futex resumed>)        = ?
[pid  7466] <... futex resumed>)        = ?
[pid  7465] <... exit_group resumed>)   = ?
[pid  7484] +++ exited with 0 +++
[pid  7466] +++ exited with 0 +++
[pid  7465] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=360, si_uid=0, si_status=0, si_utime=0, si_stime=43 /* 0.43 s */} ---
[pid  5073] umount2("./119", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./119", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./119/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./119/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./119/binderfs")    = 0
[pid  5073] umount2("./119/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./119/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./119/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./119/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./119/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./119/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./119")              = 0
[pid  5073] mkdir("./120", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7485 attached
 <unfinished ...>
[pid  7485] set_robust_list(0x5555570a96a0, 24 <unfinished ...>
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 363
[pid  7485] <... set_robust_list resumed>) = 0
[pid  7485] chdir("./120")              = 0
[pid  7485] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7485] setpgid(0, 0)               = 0
[pid  7485] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7485] write(3, "1000", 4)         = 4
[pid  7485] close(3)                    = 0
[pid  7485] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7485] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7485] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7485] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7485] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7485] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7486 attached
 <unfinished ...>
[pid  7486] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  7485] <... clone3 resumed> => {parent_tid=[364]}, 88) = 364
[pid  7486] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7485] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7486] <... set_robust_list resumed>) = 0
[pid  7485] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7486] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7485] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7486] memfd_create("syzkaller", 0 <unfinished ...>
[pid  7485] <... futex resumed>)        = 0
[pid  7485] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7486] <... memfd_create resumed>) = 3
[pid  7486] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7486] 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) = 16777216
[pid  7486] munmap(0x7f877d82c000, 138412032) = 0
[pid  7486] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7486] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7486] close(3)                    = 0
[pid  7486] mkdir("./file0", 0777)      = 0
[  217.910100][ T7486] loop0: detected capacity change from 0 to 32768
[  217.934350][ T7486] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7486)
[  217.949987][ T7486] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  217.959281][ T7486] BTRFS info (device loop0): force clearing of disk cache
[  217.966427][ T7486] BTRFS info (device loop0): setting nodatasum
[  217.972573][ T7486] BTRFS info (device loop0): allowing degraded mounts
[  217.979397][ T7486] BTRFS info (device loop0): enabling disk space caching
[  217.986466][ T7486] BTRFS info (device loop0): disk space caching is enabled
[  218.008082][ T7486] BTRFS info (device loop0): enabling ssd optimizations
[  218.015259][ T7486] BTRFS info (device loop0): auto enabling async discard
[  218.023159][ T7486] BTRFS info (device loop0): rebuilding free space tree
[  218.035978][ T7486] BTRFS info (device loop0): disabling free space tree
[  218.042886][ T7486] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  7486] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7486] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7486] chdir("./file0")            = 0
[pid  7486] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7486] close(4)                    = 0
[pid  7486] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7485] <... futex resumed>)        = 0
[pid  7485] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7485] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7486] open("./file0", O_RDONLY)   = 4
[  218.052821][ T7486] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  218.066345][ T7486] BTRFS info (device loop0): checking UUID tree
[pid  7486] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7485] <... futex resumed>)        = 0
[pid  7485] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7485] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7486] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  7486] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7485] <... futex resumed>)        = 0
[pid  7486] 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}} <unfinished ...>
[pid  7485] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7485] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7485] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7485] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7485] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7485] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7485] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 7504 attached
 => {parent_tid=[365]}, 88) = 365
[pid  7485] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7504] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  7485] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7504] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  7485] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7504] <... set_robust_list resumed>) = 0
[pid  7485] <... futex resumed>)        = 0
[pid  7504] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7485] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7504] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7504] open("./file0", O_RDONLY)   = 5
[pid  7504] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7504] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7485] <... futex resumed>)        = 0
[pid  7504] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7485] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7504] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  7485] <... futex resumed>)        = 0
[  218.132618][ T7486] BTRFS info (device loop0): balance: start -d -m
[  218.143558][ T7486] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  218.170548][ T7486] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7485] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7485] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  7504] <... ioctl resumed>)        = 0
[pid  7504] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  218.341443][ T7486] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  218.365962][ T7486] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  7504] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7486] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7486] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7485] close(3 <unfinished ...>
[pid  7486] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7485] <... close resumed>)        = 0
[pid  7485] close(4)                    = 0
[pid  7485] close(5)                    = 0
[pid  7485] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7485] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7485] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7485] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7485] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7485] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7485] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7485] close(13)                   = -1 EBADF (Bad file descriptor)
[  218.385296][ T7486] BTRFS info (device loop0): balance: ended with status: 0
[pid  7485] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7485] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7485] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7485] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7485] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7485] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7485] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7485] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7485] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7485] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7485] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7485] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7485] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7485] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7485] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7485] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7485] exit_group(0 <unfinished ...>
[pid  7504] <... futex resumed>)        = ?
[pid  7485] <... exit_group resumed>)   = ?
[pid  7504] +++ exited with 0 +++
[pid  7486] <... futex resumed>)        = ?
[pid  7486] +++ exited with 0 +++
[pid  7485] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=363, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=42 /* 0.42 s */} ---
[pid  5073] umount2("./120", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./120", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./120/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./120/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./120/binderfs")    = 0
[pid  5073] umount2("./120/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./120/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./120/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./120/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./120/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./120/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./120")              = 0
[pid  5073] mkdir("./121", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7505 attached
, child_tidptr=0x5555570a9690) = 366
[pid  7505] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7505] chdir("./121")              = 0
[pid  7505] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7505] setpgid(0, 0)               = 0
[pid  7505] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7505] write(3, "1000", 4)         = 4
[pid  7505] close(3)                    = 0
[pid  7505] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7505] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7505] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7505] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7505] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7505] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7506 attached
 <unfinished ...>
[pid  7506] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  7506] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7505] <... clone3 resumed> => {parent_tid=[367]}, 88) = 367
[pid  7506] <... set_robust_list resumed>) = 0
[pid  7505] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7506] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7505] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7506] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7505] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7506] memfd_create("syzkaller", 0 <unfinished ...>
[pid  7505] <... futex resumed>)        = 0
[pid  7505] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7506] <... memfd_create resumed>) = 3
[pid  7506] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7506] 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) = 16777216
[pid  7506] munmap(0x7f877d82c000, 138412032) = 0
[pid  7506] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7506] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7506] close(3)                    = 0
[pid  7506] mkdir("./file0", 0777)      = 0
[  219.025177][ T7506] loop0: detected capacity change from 0 to 32768
[  219.040028][ T7506] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7506)
[  219.055868][ T7506] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  219.065245][ T7506] BTRFS info (device loop0): force clearing of disk cache
[  219.072349][ T7506] BTRFS info (device loop0): setting nodatasum
[  219.078564][ T7506] BTRFS info (device loop0): allowing degraded mounts
[  219.085753][ T7506] BTRFS info (device loop0): enabling disk space caching
[  219.092789][ T7506] BTRFS info (device loop0): disk space caching is enabled
[  219.114716][ T7506] BTRFS info (device loop0): enabling ssd optimizations
[  219.121673][ T7506] BTRFS info (device loop0): auto enabling async discard
[  219.129823][ T7506] BTRFS info (device loop0): rebuilding free space tree
[  219.141606][ T7506] BTRFS info (device loop0): disabling free space tree
[  219.148807][ T7506] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  219.158475][ T7506] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  7506] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7506] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7506] chdir("./file0")            = 0
[pid  7506] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7506] close(4)                    = 0
[pid  7506] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7506] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7505] <... futex resumed>)        = 0
[  219.171716][ T7506] BTRFS info (device loop0): checking UUID tree
[pid  7505] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7506] <... futex resumed>)        = 0
[pid  7505] <... futex resumed>)        = 1
[pid  7506] open("./file0", O_RDONLY <unfinished ...>
[pid  7505] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7506] <... open resumed>)         = 4
[pid  7506] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7505] <... futex resumed>)        = 0
[pid  7505] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7506] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  7505] <... futex resumed>)        = 0
[pid  7506] <... ioctl resumed>)        = 0
[pid  7505] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7506] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7505] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7506] <... futex resumed>)        = 0
[pid  7505] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7506] 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}} <unfinished ...>
[pid  7505] <... futex resumed>)        = 0
[pid  7505] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7505] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7505] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7505] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7505] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7505] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[368]}, 88) = 368
[pid  7505] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7505] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
./strace-static-x86_64: Process 7524 attached
[pid  7505] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7524] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  7524] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  7524] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7524] open("./file0", O_RDONLY)   = 5
[pid  7524] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7505] <... futex resumed>)        = 0
[pid  7524] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7505] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7524] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7524] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  7505] <... futex resumed>)        = 0
[  219.251981][ T7506] BTRFS info (device loop0): balance: start -d -m
[  219.261924][ T7506] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  219.290864][ T7506] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7505] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7505] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  7524] <... ioctl resumed>)        = 0
[pid  7524] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  219.442484][ T7506] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  219.467808][ T7506] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  7524] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7506] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7506] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7506] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7505] close(3)                    = 0
[pid  7505] close(4)                    = 0
[pid  7505] close(5)                    = 0
[pid  7505] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7505] close(7)                    = -1 EBADF (Bad file descriptor)
[  219.486921][ T7506] BTRFS info (device loop0): balance: ended with status: 0
[pid  7505] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7505] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7505] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7505] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7505] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7505] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7505] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7505] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7505] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7505] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7505] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7505] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7505] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7505] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7505] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7505] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7505] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7505] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7505] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7505] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7505] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7505] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7505] exit_group(0 <unfinished ...>
[pid  7524] <... futex resumed>)        = ?
[pid  7524] +++ exited with 0 +++
[pid  7506] <... futex resumed>)        = ?
[pid  7505] <... exit_group resumed>)   = ?
[pid  7506] +++ exited with 0 +++
[pid  7505] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=366, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=39 /* 0.39 s */} ---
[pid  5073] umount2("./121", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./121", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./121/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./121/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./121/binderfs")    = 0
[pid  5073] umount2("./121/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./121/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./121/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./121/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./121/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./121/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./121")              = 0
[pid  5073] mkdir("./122", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7525 attached
, child_tidptr=0x5555570a9690) = 369
[pid  7525] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7525] chdir("./122")              = 0
[pid  7525] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7525] setpgid(0, 0)               = 0
[pid  7525] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7525] write(3, "1000", 4)         = 4
[pid  7525] close(3)                    = 0
[pid  7525] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7525] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7525] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7525] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7525] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7525] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7526 attached
 <unfinished ...>
[pid  7526] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  7526] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7525] <... clone3 resumed> => {parent_tid=[370]}, 88) = 370
[pid  7526] <... set_robust_list resumed>) = 0
[pid  7525] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7526] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7525] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7526] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7526] memfd_create("syzkaller", 0 <unfinished ...>
[pid  7525] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7525] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7526] <... memfd_create resumed>) = 3
[pid  7526] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7526] 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) = 16777216
[pid  7526] munmap(0x7f877d82c000, 138412032) = 0
[pid  7526] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7526] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7526] close(3)                    = 0
[pid  7526] mkdir("./file0", 0777)      = 0
[  220.093189][ T7526] loop0: detected capacity change from 0 to 32768
[  220.108159][ T7526] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7526)
[  220.125031][ T7526] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  220.134312][ T7526] BTRFS info (device loop0): force clearing of disk cache
[  220.141418][ T7526] BTRFS info (device loop0): setting nodatasum
[  220.147628][ T7526] BTRFS info (device loop0): allowing degraded mounts
[  220.154440][ T7526] BTRFS info (device loop0): enabling disk space caching
[  220.161457][ T7526] BTRFS info (device loop0): disk space caching is enabled
[  220.183260][ T7526] BTRFS info (device loop0): enabling ssd optimizations
[  220.190392][ T7526] BTRFS info (device loop0): auto enabling async discard
[  220.198787][ T7526] BTRFS info (device loop0): rebuilding free space tree
[  220.211288][ T7526] BTRFS info (device loop0): disabling free space tree
[  220.218388][ T7526] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  220.228181][ T7526] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  7526] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7526] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7526] chdir("./file0")            = 0
[pid  7526] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7526] close(4)                    = 0
[pid  7526] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7526] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7525] <... futex resumed>)        = 0
[pid  7525] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7526] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7525] <... futex resumed>)        = 0
[  220.241468][ T7526] BTRFS info (device loop0): checking UUID tree
[pid  7526] open("./file0", O_RDONLY <unfinished ...>
[pid  7525] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7526] <... open resumed>)         = 4
[pid  7526] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7525] <... futex resumed>)        = 0
[pid  7526] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7525] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7526] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7526] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  7525] <... futex resumed>)        = 0
[pid  7526] <... ioctl resumed>)        = 0
[pid  7526] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7525] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7526] <... futex resumed>)        = 0
[pid  7525] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7526] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable)
[pid  7525] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7526] 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}} <unfinished ...>
[pid  7525] <... futex resumed>)        = 0
[pid  7525] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7525] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7525] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7525] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7525] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7525] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[371]}, 88) = 371
[pid  7525] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7525] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7525] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 7544 attached
 <unfinished ...>
[pid  7544] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  7544] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  7544] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7544] open("./file0", O_RDONLY)   = 5
[pid  7544] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7544] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7525] <... futex resumed>)        = 0
[pid  7525] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7544] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7525] <... futex resumed>)        = 0
[pid  7525] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[  220.300699][ T7526] BTRFS info (device loop0): balance: start -d -m
[  220.309044][ T7526] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  220.333619][ T7526] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7544] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  7525] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  7544] <... ioctl resumed>)        = 0
[pid  7544] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  220.491259][ T7526] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  220.519020][ T7526] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  7544] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7526] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7526] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7525] close(3 <unfinished ...>
[pid  7526] <... futex resumed>)        = 0
[pid  7525] <... close resumed>)        = 0
[pid  7525] close(4)                    = 0
[pid  7525] close(5 <unfinished ...>
[pid  7526] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7525] <... close resumed>)        = 0
[pid  7525] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7525] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7525] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7525] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7525] close(10)                   = -1 EBADF (Bad file descriptor)
[  220.538513][ T7526] BTRFS info (device loop0): balance: ended with status: 0
[pid  7525] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7525] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7525] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7525] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7525] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7525] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7525] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7525] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7525] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7525] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7525] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7525] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7525] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7525] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7525] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7525] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7525] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7525] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7525] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7525] exit_group(0 <unfinished ...>
[pid  7544] <... futex resumed>)        = ?
[pid  7526] <... futex resumed>)        = ?
[pid  7525] <... exit_group resumed>)   = ?
[pid  7544] +++ exited with 0 +++
[pid  7526] +++ exited with 0 +++
[pid  7525] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=369, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=39 /* 0.39 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./122", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./122", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./122/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./122/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./122/binderfs")    = 0
[pid  5073] umount2("./122/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./122/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./122/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./122/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./122/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./122/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./122")              = 0
[pid  5073] mkdir("./123", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7545 attached
, child_tidptr=0x5555570a9690) = 372
[pid  7545] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7545] chdir("./123")              = 0
[pid  7545] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7545] setpgid(0, 0)               = 0
[pid  7545] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7545] write(3, "1000", 4)         = 4
[pid  7545] close(3)                    = 0
[pid  7545] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7545] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7545] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7545] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7545] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7545] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7546 attached
 <unfinished ...>
[pid  7546] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  7546] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7545] <... clone3 resumed> => {parent_tid=[373]}, 88) = 373
[pid  7546] <... set_robust_list resumed>) = 0
[pid  7545] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7546] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7545] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7546] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7545] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7546] memfd_create("syzkaller", 0 <unfinished ...>
[pid  7545] <... futex resumed>)        = 0
[pid  7546] <... memfd_create resumed>) = 3
[pid  7545] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7546] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7546] 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) = 16777216
[pid  7546] munmap(0x7f877d82c000, 138412032) = 0
[pid  7546] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7546] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7546] close(3)                    = 0
[pid  7546] mkdir("./file0", 0777)      = 0
[  221.170620][ T7546] loop0: detected capacity change from 0 to 32768
[  221.195102][ T7546] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7546)
[  221.211690][ T7546] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  221.220984][ T7546] BTRFS info (device loop0): force clearing of disk cache
[  221.228122][ T7546] BTRFS info (device loop0): setting nodatasum
[  221.234332][ T7546] BTRFS info (device loop0): allowing degraded mounts
[  221.241113][ T7546] BTRFS info (device loop0): enabling disk space caching
[  221.248212][ T7546] BTRFS info (device loop0): disk space caching is enabled
[  221.270629][ T7546] BTRFS info (device loop0): enabling ssd optimizations
[  221.277763][ T7546] BTRFS info (device loop0): auto enabling async discard
[  221.285918][ T7546] BTRFS info (device loop0): rebuilding free space tree
[  221.297990][ T7546] BTRFS info (device loop0): disabling free space tree
[  221.304976][ T7546] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  7546] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7546] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7546] chdir("./file0")            = 0
[pid  7546] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7546] close(4)                    = 0
[pid  7546] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7545] <... futex resumed>)        = 0
[pid  7546] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7545] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7546] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7545] <... futex resumed>)        = 0
[pid  7546] open("./file0", O_RDONLY <unfinished ...>
[pid  7545] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7546] <... open resumed>)         = 4
[pid  7546] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7546] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7545] <... futex resumed>)        = 0
[pid  7545] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[  221.314707][ T7546] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  221.327911][ T7546] BTRFS info (device loop0): checking UUID tree
[pid  7545] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7546] <... futex resumed>)        = 0
[pid  7546] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  7546] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7545] <... futex resumed>)        = 0
[pid  7545] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7546] 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}} <unfinished ...>
[pid  7545] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7545] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7545] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7545] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7545] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7545] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[374]}, 88) = 374
[pid  7545] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7545] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7545] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 7564 attached
 <unfinished ...>
[pid  7564] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  7564] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  7564] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7564] open("./file0", O_RDONLY)   = 5
[pid  7564] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7545] <... futex resumed>)        = 0
[  221.420887][ T7546] BTRFS info (device loop0): balance: start -d -m
[  221.430514][ T7546] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  221.459245][ T7546] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7564] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7545] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7564] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7545] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7564] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  7545] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[  221.528133][ T7546] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  7564] <... ioctl resumed>)        = 0
[pid  7564] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7564] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7546] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7546] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7546] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7545] close(3)                    = 0
[pid  7545] close(4)                    = 0
[pid  7545] close(5)                    = 0
[pid  7545] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7545] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7545] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7545] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7545] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7545] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7545] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7545] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7545] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7545] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7545] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7545] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7545] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7545] close(19)                   = -1 EBADF (Bad file descriptor)
[  221.595401][ T7546] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  221.616001][ T7546] BTRFS info (device loop0): balance: ended with status: 0
[pid  7545] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7545] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7545] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7545] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7545] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7545] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7545] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7545] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7545] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7545] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7545] exit_group(0 <unfinished ...>
[pid  7564] <... futex resumed>)        = ?
[pid  7546] <... futex resumed>)        = ?
[pid  7545] <... exit_group resumed>)   = ?
[pid  7546] +++ exited with 0 +++
[pid  7564] +++ exited with 0 +++
[pid  7545] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=372, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=42 /* 0.42 s */} ---
[pid  5073] umount2("./123", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./123", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./123/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./123/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./123/binderfs")    = 0
[pid  5073] umount2("./123/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./123/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./123/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./123/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./123/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./123/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./123")              = 0
[pid  5073] mkdir("./124", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7565 attached
 <unfinished ...>
[pid  7565] set_robust_list(0x5555570a96a0, 24 <unfinished ...>
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 375
[pid  7565] <... set_robust_list resumed>) = 0
[pid  7565] chdir("./124")              = 0
[pid  7565] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7565] setpgid(0, 0)               = 0
[pid  7565] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7565] write(3, "1000", 4)         = 4
[pid  7565] close(3)                    = 0
[pid  7565] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7565] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7565] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7565] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7565] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7565] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7566 attached
 <unfinished ...>
[pid  7566] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7565] <... clone3 resumed> => {parent_tid=[376]}, 88) = 376
[pid  7566] <... rseq resumed>)         = 0
[pid  7565] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7566] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7565] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7566] <... set_robust_list resumed>) = 0
[pid  7565] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7566] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7565] <... futex resumed>)        = 0
[pid  7565] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7566] memfd_create("syzkaller", 0) = 3
[pid  7566] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7566] 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) = 16777216
[pid  7566] munmap(0x7f877d82c000, 138412032) = 0
[pid  7566] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7566] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7566] close(3)                    = 0
[pid  7566] mkdir("./file0", 0777)      = 0
[  222.292907][ T7566] loop0: detected capacity change from 0 to 32768
[  222.307845][ T7566] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7566)
[  222.324779][ T7566] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  222.334045][ T7566] BTRFS info (device loop0): force clearing of disk cache
[  222.341138][ T7566] BTRFS info (device loop0): setting nodatasum
[  222.348001][ T7566] BTRFS info (device loop0): allowing degraded mounts
[  222.354854][ T7566] BTRFS info (device loop0): enabling disk space caching
[  222.361988][ T7566] BTRFS info (device loop0): disk space caching is enabled
[  222.384945][ T7566] BTRFS info (device loop0): enabling ssd optimizations
[  222.391895][ T7566] BTRFS info (device loop0): auto enabling async discard
[  222.399952][ T7566] BTRFS info (device loop0): rebuilding free space tree
[  222.412147][ T7566] BTRFS info (device loop0): disabling free space tree
[  222.419111][ T7566] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  222.428777][ T7566] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  7566] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7566] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7566] chdir("./file0")            = 0
[pid  7566] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7566] close(4)                    = 0
[pid  7566] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7565] <... futex resumed>)        = 0
[pid  7566] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7565] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7566] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7565] <... futex resumed>)        = 0
[pid  7566] open("./file0", O_RDONLY <unfinished ...>
[pid  7565] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7566] <... open resumed>)         = 4
[  222.441936][ T7566] BTRFS info (device loop0): checking UUID tree
[pid  7566] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7566] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7565] <... futex resumed>)        = 0
[pid  7565] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7566] <... futex resumed>)        = 0
[pid  7565] <... futex resumed>)        = 1
[pid  7566] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  7565] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7566] <... ioctl resumed>)        = 0
[pid  7566] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7565] <... futex resumed>)        = 0
[pid  7565] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7566] 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}} <unfinished ...>
[pid  7565] <... futex resumed>)        = 0
[  222.512979][ T7566] BTRFS info (device loop0): balance: start -d -m
[  222.524847][ T7566] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  7565] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7565] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7565] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7565] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7565] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7565] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[377]}, 88) = 377
[pid  7565] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7565] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7565] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 7584 attached
 <unfinished ...>
[pid  7584] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  7584] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  7584] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7584] open("./file0", O_RDONLY)   = 5
[pid  7584] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7584] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7565] <... futex resumed>)        = 0
[pid  7565] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7584] <... futex resumed>)        = 0
[pid  7565] <... futex resumed>)        = 1
[pid  7584] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  222.554160][ T7566] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7565] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7584] <... ioctl resumed>)        = 0
[pid  7584] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7584] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7566] <... ioctl resumed>)        = -1 ENOSPC (No space left on device)
[pid  7566] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7566] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7565] close(3)                    = 0
[pid  7565] close(4)                    = 0
[pid  7565] close(5)                    = 0
[pid  7565] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7565] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7565] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7565] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7565] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7565] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7565] close(12)                   = -1 EBADF (Bad file descriptor)
[  222.700053][ T7566] BTRFS info (device loop0): 1 enospc errors during balance
[  222.707760][ T7566] BTRFS info (device loop0): balance: ended with status: -28
[pid  7565] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7565] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7565] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7565] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7565] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7565] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7565] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7565] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7565] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7565] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7565] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7565] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7565] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7565] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7565] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7565] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7565] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7565] exit_group(0)               = ?
[pid  7584] <... futex resumed>)        = ?
[pid  7566] <... futex resumed>)        = ?
[pid  7584] +++ exited with 0 +++
[pid  7566] +++ exited with 0 +++
[pid  7565] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=375, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=38 /* 0.38 s */} ---
[pid  5073] umount2("./124", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./124", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./124/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./124/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./124/binderfs")    = 0
[pid  5073] umount2("./124/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./124/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./124/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./124/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./124/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./124/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./124")              = 0
[pid  5073] mkdir("./125", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7585 attached
, child_tidptr=0x5555570a9690) = 378
[pid  7585] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7585] chdir("./125")              = 0
[pid  7585] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7585] setpgid(0, 0)               = 0
[pid  7585] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7585] write(3, "1000", 4)         = 4
[pid  7585] close(3)                    = 0
[pid  7585] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7585] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7585] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7585] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7585] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7585] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7586 attached
 <unfinished ...>
[pid  7586] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7585] <... clone3 resumed> => {parent_tid=[379]}, 88) = 379
[pid  7586] <... rseq resumed>)         = 0
[pid  7585] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7586] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7585] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7586] <... set_robust_list resumed>) = 0
[pid  7585] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7586] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7585] <... futex resumed>)        = 0
[pid  7586] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7585] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7586] memfd_create("syzkaller", 0) = 3
[pid  7586] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7586] 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) = 16777216
[pid  7586] munmap(0x7f877d82c000, 138412032) = 0
[pid  7586] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7586] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7586] close(3)                    = 0
[pid  7586] mkdir("./file0", 0777)      = 0
[  223.415537][ T7586] loop0: detected capacity change from 0 to 32768
[  223.430494][ T7586] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7586)
[  223.446311][ T7586] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  223.455580][ T7586] BTRFS info (device loop0): force clearing of disk cache
[  223.462685][ T7586] BTRFS info (device loop0): setting nodatasum
[  223.469077][ T7586] BTRFS info (device loop0): allowing degraded mounts
[  223.475866][ T7586] BTRFS info (device loop0): enabling disk space caching
[  223.482878][ T7586] BTRFS info (device loop0): disk space caching is enabled
[  223.505536][ T7586] BTRFS info (device loop0): enabling ssd optimizations
[  223.512486][ T7586] BTRFS info (device loop0): auto enabling async discard
[  223.520642][ T7586] BTRFS info (device loop0): rebuilding free space tree
[  223.532131][ T7586] BTRFS info (device loop0): disabling free space tree
[  223.539469][ T7586] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  223.549404][ T7586] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  7586] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7586] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7586] chdir("./file0")            = 0
[pid  7586] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7586] close(4)                    = 0
[pid  7586] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7585] <... futex resumed>)        = 0
[pid  7586] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7585] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7586] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7585] <... futex resumed>)        = 0
[pid  7586] open("./file0", O_RDONLY <unfinished ...>
[pid  7585] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7586] <... open resumed>)         = 4
[pid  7586] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7585] <... futex resumed>)        = 0
[pid  7585] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7585] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7586] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  7586] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7585] <... futex resumed>)        = 0
[pid  7586] 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}} <unfinished ...>
[pid  7585] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  223.563313][ T7586] BTRFS info (device loop0): checking UUID tree
[pid  7585] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7585] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7585] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7585] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7585] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7585] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 7604 attached
 <unfinished ...>
[pid  7604] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7585] <... clone3 resumed> => {parent_tid=[380]}, 88) = 380
[pid  7604] <... rseq resumed>)         = 0
[pid  7585] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7604] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  7585] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7585] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7604] <... set_robust_list resumed>) = 0
[pid  7604] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7585] <... futex resumed>)        = 0
[pid  7604] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7585] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7604] open("./file0", O_RDONLY)   = 5
[pid  7604] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7585] <... futex resumed>)        = 0
[pid  7604] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7585] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7604] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7585] <... futex resumed>)        = 0
[pid  7604] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  223.610506][ T7586] BTRFS info (device loop0): balance: start -d -m
[  223.619423][ T7586] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  223.647359][ T7586] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7585] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7604] <... ioctl resumed>)        = 0
[pid  7604] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  223.824823][ T7586] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  223.848592][ T7586] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  7604] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7586] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7586] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7586] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7585] close(3)                    = 0
[pid  7585] close(4)                    = 0
[pid  7585] close(5)                    = 0
[pid  7585] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7585] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7585] close(8)                    = -1 EBADF (Bad file descriptor)
[  223.868185][ T7586] BTRFS info (device loop0): balance: ended with status: 0
[pid  7585] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7585] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7585] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7585] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7585] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7585] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7585] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7585] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7585] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7585] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7585] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7585] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7585] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7585] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7585] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7585] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7585] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7585] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7585] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7585] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7585] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7585] exit_group(0 <unfinished ...>
[pid  7604] <... futex resumed>)        = ?
[pid  7604] +++ exited with 0 +++
[pid  7586] <... futex resumed>)        = ?
[pid  7585] <... exit_group resumed>)   = ?
[pid  7586] +++ exited with 0 +++
[pid  7585] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=378, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=44 /* 0.44 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./125", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./125", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./125/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./125/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./125/binderfs")    = 0
[pid  5073] umount2("./125/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./125/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./125/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./125/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./125/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./125/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./125")              = 0
[pid  5073] mkdir("./126", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7605 attached
 <unfinished ...>
[pid  7605] set_robust_list(0x5555570a96a0, 24) = 0
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 381
[pid  7605] chdir("./126")              = 0
[pid  7605] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7605] setpgid(0, 0)               = 0
[pid  7605] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7605] write(3, "1000", 4)         = 4
[pid  7605] close(3)                    = 0
[pid  7605] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7605] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7605] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7605] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7605] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7605] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7606 attached
 <unfinished ...>
[pid  7606] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  7605] <... clone3 resumed> => {parent_tid=[382]}, 88) = 382
[pid  7606] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7605] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7606] <... set_robust_list resumed>) = 0
[pid  7606] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7605] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7606] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7606] memfd_create("syzkaller", 0 <unfinished ...>
[pid  7605] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7605] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7606] <... memfd_create resumed>) = 3
[pid  7606] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7606] 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) = 16777216
[pid  7606] munmap(0x7f877d82c000, 138412032) = 0
[pid  7606] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7606] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7606] close(3)                    = 0
[pid  7606] mkdir("./file0", 0777)      = 0
[  224.522657][ T7606] loop0: detected capacity change from 0 to 32768
[  224.547663][ T7606] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7606)
[  224.564502][ T7606] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  224.573750][ T7606] BTRFS info (device loop0): force clearing of disk cache
[  224.580917][ T7606] BTRFS info (device loop0): setting nodatasum
[  224.587140][ T7606] BTRFS info (device loop0): allowing degraded mounts
[  224.594000][ T7606] BTRFS info (device loop0): enabling disk space caching
[  224.601026][ T7606] BTRFS info (device loop0): disk space caching is enabled
[  224.623071][ T7606] BTRFS info (device loop0): enabling ssd optimizations
[  224.630215][ T7606] BTRFS info (device loop0): auto enabling async discard
[  224.638119][ T7606] BTRFS info (device loop0): rebuilding free space tree
[  224.650802][ T7606] BTRFS info (device loop0): disabling free space tree
[  224.657722][ T7606] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  7606] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7606] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7606] chdir("./file0")            = 0
[pid  7606] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7606] close(4)                    = 0
[pid  7606] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7605] <... futex resumed>)        = 0
[pid  7606] <... futex resumed>)        = 1
[pid  7605] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7606] open("./file0", O_RDONLY <unfinished ...>
[pid  7605] <... futex resumed>)        = 0
[pid  7606] <... open resumed>)         = 4
[  224.667401][ T7606] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  224.680361][ T7606] BTRFS info (device loop0): checking UUID tree
[pid  7605] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7606] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7605] <... futex resumed>)        = 0
[pid  7606] <... futex resumed>)        = 1
[pid  7605] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7606] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  7605] <... futex resumed>)        = 0
[pid  7606] <... ioctl resumed>)        = 0
[pid  7605] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7606] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7605] <... futex resumed>)        = 0
[pid  7606] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7605] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7606] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7606] 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}} <unfinished ...>
[pid  7605] <... futex resumed>)        = 0
[pid  7605] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7605] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7605] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7605] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7605] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7605] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[383]}, 88) = 383
./strace-static-x86_64: Process 7624 attached
[pid  7605] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7624] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7605] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7624] <... rseq resumed>)         = 0
[pid  7624] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  7624] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7605] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7624] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7605] <... futex resumed>)        = 0
[pid  7624] open("./file0", O_RDONLY <unfinished ...>
[pid  7605] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7624] <... open resumed>)         = 5
[pid  7624] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7605] <... futex resumed>)        = 0
[pid  7624] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  7605] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  224.761692][ T7606] BTRFS info (device loop0): balance: start -d -m
[  224.771031][ T7606] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  224.800699][ T7606] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7605] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7605] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  7624] <... ioctl resumed>)        = 0
[pid  7624] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  224.955734][ T7606] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  224.980504][ T7606] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  7624] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7606] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7606] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7606] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7605] close(3)                    = 0
[pid  7605] close(4)                    = 0
[pid  7605] close(5)                    = 0
[pid  7605] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7605] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7605] close(8)                    = -1 EBADF (Bad file descriptor)
[  225.000332][ T7606] BTRFS info (device loop0): balance: ended with status: 0
[pid  7605] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7605] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7605] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7605] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7605] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7605] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7605] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7605] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7605] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7605] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7605] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7605] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7605] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7605] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7605] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7605] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7605] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7605] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7605] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7605] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7605] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7605] exit_group(0 <unfinished ...>
[pid  7624] <... futex resumed>)        = ?
[pid  7624] +++ exited with 0 +++
[pid  7605] <... exit_group resumed>)   = ?
[pid  7606] <... futex resumed>)        = ?
[pid  7606] +++ exited with 0 +++
[pid  7605] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=381, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=39 /* 0.39 s */} ---
[pid  5073] umount2("./126", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./126", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./126/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./126/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./126/binderfs")    = 0
[pid  5073] umount2("./126/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./126/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./126/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./126/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./126/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./126/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./126")              = 0
[pid  5073] mkdir("./127", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7625 attached
, child_tidptr=0x5555570a9690) = 384
[pid  7625] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7625] chdir("./127")              = 0
[pid  7625] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7625] setpgid(0, 0)               = 0
[pid  7625] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7625] write(3, "1000", 4)         = 4
[pid  7625] close(3)                    = 0
[pid  7625] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7625] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7625] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7625] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7625] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7625] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7626 attached
 <unfinished ...>
[pid  7626] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  7626] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7625] <... clone3 resumed> => {parent_tid=[385]}, 88) = 385
[pid  7626] <... set_robust_list resumed>) = 0
[pid  7625] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7626] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7625] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7626] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7625] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7626] memfd_create("syzkaller", 0 <unfinished ...>
[pid  7625] <... futex resumed>)        = 0
[pid  7625] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7626] <... memfd_create resumed>) = 3
[pid  7626] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7626] 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) = 16777216
[pid  7626] munmap(0x7f877d82c000, 138412032) = 0
[pid  7626] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7626] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7626] close(3)                    = 0
[pid  7626] mkdir("./file0", 0777)      = 0
[  225.563204][ T7626] loop0: detected capacity change from 0 to 32768
[  225.577431][ T7626] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7626)
[  225.592696][ T7626] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  225.602000][ T7626] BTRFS info (device loop0): force clearing of disk cache
[  225.609141][ T7626] BTRFS info (device loop0): setting nodatasum
[  225.615350][ T7626] BTRFS info (device loop0): allowing degraded mounts
[  225.622123][ T7626] BTRFS info (device loop0): enabling disk space caching
[  225.629201][ T7626] BTRFS info (device loop0): disk space caching is enabled
[  225.650580][ T7626] BTRFS info (device loop0): enabling ssd optimizations
[  225.657651][ T7626] BTRFS info (device loop0): auto enabling async discard
[  225.666317][ T7626] BTRFS info (device loop0): rebuilding free space tree
[  225.678517][ T7626] BTRFS info (device loop0): disabling free space tree
[  225.685456][ T7626] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  225.695132][ T7626] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  7626] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7626] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7626] chdir("./file0")            = 0
[pid  7626] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7626] close(4)                    = 0
[pid  7626] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7625] <... futex resumed>)        = 0
[pid  7625] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7626] open("./file0", O_RDONLY <unfinished ...>
[pid  7625] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7626] <... open resumed>)         = 4
[  225.708005][ T7626] BTRFS info (device loop0): checking UUID tree
[pid  7626] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7625] <... futex resumed>)        = 0
[pid  7625] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7626] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  7625] <... futex resumed>)        = 0
[pid  7626] <... ioctl resumed>)        = 0
[pid  7626] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7625] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7626] <... futex resumed>)        = 0
[pid  7626] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7625] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7625] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7626] <... futex resumed>)        = 0
[pid  7625] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[  225.787423][ T7626] BTRFS info (device loop0): balance: start -d -m
[  225.796417][ T7626] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  7626] 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}} <unfinished ...>
[pid  7625] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  7625] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7625] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7625] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7625] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7625] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[386]}, 88) = 386
[pid  7625] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7625] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7625] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 7644 attached
 <unfinished ...>
[pid  7644] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  7644] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  7644] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7644] open("./file0", O_RDONLY)   = 5
[pid  7644] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7625] <... futex resumed>)        = 0
[pid  7644] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7625] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7644] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7625] <... futex resumed>)        = 0
[pid  7644] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  225.830283][ T7626] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7625] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7644] <... ioctl resumed>)        = 0
[pid  7644] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  225.971614][ T7626] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  225.995325][ T7626] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  226.014633][ T7626] BTRFS info (device loop0): balance: ended with status: 0
[pid  7644] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7626] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7626] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7625] close(3 <unfinished ...>
[pid  7626] <... futex resumed>)        = 0
[pid  7625] <... close resumed>)        = 0
[pid  7626] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7625] close(4)                    = 0
[pid  7625] close(5)                    = 0
[pid  7625] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7625] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7625] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7625] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7625] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7625] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7625] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7625] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7625] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7625] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7625] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7625] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7625] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7625] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7625] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7625] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7625] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7625] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7625] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7625] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7625] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7625] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7625] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7625] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7625] exit_group(0 <unfinished ...>
[pid  7644] <... futex resumed>)        = ?
[pid  7626] <... futex resumed>)        = ?
[pid  7625] <... exit_group resumed>)   = ?
[pid  7644] +++ exited with 0 +++
[pid  7626] +++ exited with 0 +++
[pid  7625] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=384, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=45 /* 0.45 s */} ---
[pid  5073] umount2("./127", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./127", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./127/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./127/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./127/binderfs")    = 0
[pid  5073] umount2("./127/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./127/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./127/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./127/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./127/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./127/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./127")              = 0
[pid  5073] mkdir("./128", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7645 attached
, child_tidptr=0x5555570a9690) = 387
[pid  7645] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7645] chdir("./128")              = 0
[pid  7645] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7645] setpgid(0, 0)               = 0
[pid  7645] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7645] write(3, "1000", 4)         = 4
[pid  7645] close(3)                    = 0
[pid  7645] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7645] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7645] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7645] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7645] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7645] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7646 attached
 <unfinished ...>
[pid  7646] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7645] <... clone3 resumed> => {parent_tid=[388]}, 88) = 388
[pid  7646] <... rseq resumed>)         = 0
[pid  7645] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7646] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7645] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7646] <... set_robust_list resumed>) = 0
[pid  7645] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7646] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7645] <... futex resumed>)        = 0
[pid  7646] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7645] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7646] memfd_create("syzkaller", 0) = 3
[pid  7646] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7646] 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) = 16777216
[pid  7646] munmap(0x7f877d82c000, 138412032) = 0
[pid  7646] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7646] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7646] close(3)                    = 0
[pid  7646] mkdir("./file0", 0777)      = 0
[  226.720908][ T7646] loop0: detected capacity change from 0 to 32768
[  226.745358][ T7646] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7646)
[  226.761134][ T7646] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  226.770475][ T7646] BTRFS info (device loop0): force clearing of disk cache
[  226.777659][ T7646] BTRFS info (device loop0): setting nodatasum
[  226.783824][ T7646] BTRFS info (device loop0): allowing degraded mounts
[  226.790658][ T7646] BTRFS info (device loop0): enabling disk space caching
[  226.797799][ T7646] BTRFS info (device loop0): disk space caching is enabled
[  226.820293][ T7646] BTRFS info (device loop0): enabling ssd optimizations
[  226.827324][ T7646] BTRFS info (device loop0): auto enabling async discard
[  226.835428][ T7646] BTRFS info (device loop0): rebuilding free space tree
[  226.847503][ T7646] BTRFS info (device loop0): disabling free space tree
[  226.854772][ T7646] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  7646] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7646] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7646] chdir("./file0")            = 0
[pid  7646] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7646] close(4)                    = 0
[pid  7646] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7645] <... futex resumed>)        = 0
[pid  7645] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7645] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7646] open("./file0", O_RDONLY)   = 4
[pid  7646] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7645] <... futex resumed>)        = 0
[pid  7646] <... futex resumed>)        = 1
[pid  7645] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7646] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  7645] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7646] <... ioctl resumed>)        = 0
[  226.864468][ T7646] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  226.877585][ T7646] BTRFS info (device loop0): checking UUID tree
[pid  7646] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7646] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7645] <... futex resumed>)        = 0
[pid  7645] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7645] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7646] <... futex resumed>)        = 0
[pid  7646] 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}} <unfinished ...>
[pid  7645] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  7645] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  7645] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7645] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7645] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7645] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7645] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[389]}, 88) = 389
[pid  7645] rt_sigprocmask(SIG_SETMASK, [], ./strace-static-x86_64: Process 7664 attached
NULL, 8) = 0
[pid  7664] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7645] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7664] <... rseq resumed>)         = 0
[pid  7645] <... futex resumed>)        = 0
[pid  7664] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  7645] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7664] <... set_robust_list resumed>) = 0
[pid  7664] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7664] open("./file0", O_RDONLY)   = 5
[pid  7664] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7645] <... futex resumed>)        = 0
[pid  7664] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7645] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7664] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7645] <... futex resumed>)        = 0
[pid  7664] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  226.949785][ T7646] BTRFS info (device loop0): balance: start -d -m
[  226.958877][ T7646] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  226.982725][ T7646] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7645] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7664] <... ioctl resumed>)        = 0
[pid  7664] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  227.144272][ T7646] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  227.169171][ T7646] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  7664] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7646] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7646] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7646] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7645] close(3)                    = 0
[pid  7645] close(4)                    = 0
[pid  7645] close(5)                    = 0
[pid  7645] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7645] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7645] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7645] close(9)                    = -1 EBADF (Bad file descriptor)
[  227.189097][ T7646] BTRFS info (device loop0): balance: ended with status: 0
[pid  7645] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7645] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7645] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7645] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7645] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7645] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7645] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7645] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7645] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7645] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7645] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7645] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7645] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7645] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7645] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7645] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7645] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7645] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7645] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7645] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7645] exit_group(0 <unfinished ...>
[pid  7664] <... futex resumed>)        = ?
[pid  7664] +++ exited with 0 +++
[pid  7645] <... exit_group resumed>)   = ?
[pid  7646] <... futex resumed>)        = ?
[pid  7646] +++ exited with 0 +++
[pid  7645] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=387, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=44 /* 0.44 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./128", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./128", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./128/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./128/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./128/binderfs")    = 0
[pid  5073] umount2("./128/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./128/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./128/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./128/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./128/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./128/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./128")              = 0
[pid  5073] mkdir("./129", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7665 attached
, child_tidptr=0x5555570a9690) = 390
[pid  7665] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7665] chdir("./129")              = 0
[pid  7665] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7665] setpgid(0, 0)               = 0
[pid  7665] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7665] write(3, "1000", 4)         = 4
[pid  7665] close(3)                    = 0
[pid  7665] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7665] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7665] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7665] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7665] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7665] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7666 attached
 <unfinished ...>
[pid  7666] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  7666] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7665] <... clone3 resumed> => {parent_tid=[391]}, 88) = 391
[pid  7666] <... set_robust_list resumed>) = 0
[pid  7665] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7666] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7665] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7666] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7665] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7666] memfd_create("syzkaller", 0 <unfinished ...>
[pid  7665] <... futex resumed>)        = 0
[pid  7665] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7666] <... memfd_create resumed>) = 3
[pid  7666] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7666] 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) = 16777216
[pid  7666] munmap(0x7f877d82c000, 138412032) = 0
[pid  7666] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7666] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7666] close(3)                    = 0
[pid  7666] mkdir("./file0", 0777)      = 0
[  227.767827][ T7666] loop0: detected capacity change from 0 to 32768
[  227.791487][ T7666] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7666)
[  227.806673][ T7666] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  227.815973][ T7666] BTRFS info (device loop0): force clearing of disk cache
[  227.823097][ T7666] BTRFS info (device loop0): setting nodatasum
[  227.829311][ T7666] BTRFS info (device loop0): allowing degraded mounts
[  227.836105][ T7666] BTRFS info (device loop0): enabling disk space caching
[  227.843113][ T7666] BTRFS info (device loop0): disk space caching is enabled
[  227.864666][ T7666] BTRFS info (device loop0): enabling ssd optimizations
[  227.871626][ T7666] BTRFS info (device loop0): auto enabling async discard
[  227.880478][ T7666] BTRFS info (device loop0): rebuilding free space tree
[  227.892409][ T7666] BTRFS info (device loop0): disabling free space tree
[  227.899400][ T7666] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  7666] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7666] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7666] chdir("./file0")            = 0
[pid  7666] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7666] close(4)                    = 0
[pid  7666] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7665] <... futex resumed>)        = 0
[pid  7665] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7666] <... futex resumed>)        = 1
[pid  7665] <... futex resumed>)        = 0
[pid  7666] open("./file0", O_RDONLY <unfinished ...>
[pid  7665] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7666] <... open resumed>)         = 4
[pid  7666] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7665] <... futex resumed>)        = 0
[pid  7666] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7665] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7666] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7665] <... futex resumed>)        = 0
[pid  7666] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  7665] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7666] <... ioctl resumed>)        = 0
[  227.909157][ T7666] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  227.922705][ T7666] BTRFS info (device loop0): checking UUID tree
[pid  7666] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7665] <... futex resumed>)        = 0
[pid  7666] <... futex resumed>)        = 1
[pid  7665] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7666] 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}} <unfinished ...>
[pid  7665] <... futex resumed>)        = 0
[pid  7665] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7665] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7665] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7665] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7665] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7665] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 7684 attached
 => {parent_tid=[392]}, 88) = 392
[pid  7665] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7684] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7665] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7684] <... rseq resumed>)         = 0
[  228.005321][ T7666] BTRFS info (device loop0): balance: start -d -m
[  228.015750][ T7666] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  228.041101][ T7666] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7684] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  7665] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7684] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7665] <... futex resumed>)        = 0
[pid  7684] open("./file0", O_RDONLY <unfinished ...>
[pid  7665] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7684] <... open resumed>)         = 5
[pid  7684] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7665] <... futex resumed>)        = 0
[pid  7684] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7665] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7684] <... futex resumed>)        = 0
[pid  7684] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  7665] <... futex resumed>)        = 1
[pid  7665] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7684] <... ioctl resumed>)        = 0
[pid  7684] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  228.140917][ T7666] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  7684] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7666] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7666] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7665] close(3 <unfinished ...>
[pid  7666] <... futex resumed>)        = 0
[pid  7665] <... close resumed>)        = 0
[pid  7666] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7665] close(4)                    = 0
[pid  7665] close(5)                    = 0
[pid  7665] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7665] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7665] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7665] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7665] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7665] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7665] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7665] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7665] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7665] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7665] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7665] close(17)                   = -1 EBADF (Bad file descriptor)
[  228.208318][ T7666] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  228.228578][ T7666] BTRFS info (device loop0): balance: ended with status: 0
[pid  7665] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7665] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7665] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7665] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7665] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7665] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7665] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7665] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7665] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7665] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7665] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7665] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7665] exit_group(0 <unfinished ...>
[pid  7684] <... futex resumed>)        = ?
[pid  7666] <... futex resumed>)        = ?
[pid  7684] +++ exited with 0 +++
[pid  7666] +++ exited with 0 +++
[pid  7665] <... exit_group resumed>)   = ?
[pid  7665] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=390, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=42 /* 0.42 s */} ---
[pid  5073] umount2("./129", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./129", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./129/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./129/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./129/binderfs")    = 0
[pid  5073] umount2("./129/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./129/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./129/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./129/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./129/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./129/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./129")              = 0
[pid  5073] mkdir("./130", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7685 attached
, child_tidptr=0x5555570a9690) = 393
[pid  7685] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7685] chdir("./130")              = 0
[pid  7685] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7685] setpgid(0, 0)               = 0
[pid  7685] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7685] write(3, "1000", 4)         = 4
[pid  7685] close(3)                    = 0
[pid  7685] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7685] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7685] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7685] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7685] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7685] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7686 attached
 <unfinished ...>
[pid  7686] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7685] <... clone3 resumed> => {parent_tid=[394]}, 88) = 394
[pid  7686] <... rseq resumed>)         = 0
[pid  7685] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7686] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7685] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7686] <... set_robust_list resumed>) = 0
[pid  7685] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7686] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7685] <... futex resumed>)        = 0
[pid  7686] memfd_create("syzkaller", 0 <unfinished ...>
[pid  7685] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7686] <... memfd_create resumed>) = 3
[pid  7686] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7686] 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) = 16777216
[pid  7686] munmap(0x7f877d82c000, 138412032) = 0
[pid  7686] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7686] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7686] close(3)                    = 0
[pid  7686] mkdir("./file0", 0777)      = 0
[  228.782303][ T7686] loop0: detected capacity change from 0 to 32768
[  228.801935][ T7686] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7686)
[  228.819530][ T7686] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  228.828916][ T7686] BTRFS info (device loop0): force clearing of disk cache
[  228.836089][ T7686] BTRFS info (device loop0): setting nodatasum
[  228.842235][ T7686] BTRFS info (device loop0): allowing degraded mounts
[  228.849051][ T7686] BTRFS info (device loop0): enabling disk space caching
[  228.856122][ T7686] BTRFS info (device loop0): disk space caching is enabled
[  228.878465][ T7686] BTRFS info (device loop0): enabling ssd optimizations
[  228.885503][ T7686] BTRFS info (device loop0): auto enabling async discard
[  228.893407][ T7686] BTRFS info (device loop0): rebuilding free space tree
[  228.905650][ T7686] BTRFS info (device loop0): disabling free space tree
[  228.912549][ T7686] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  228.922348][ T7686] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  7686] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7686] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7686] chdir("./file0")            = 0
[pid  7686] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7686] close(4)                    = 0
[pid  7686] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7685] <... futex resumed>)        = 0
[pid  7685] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7686] open("./file0", O_RDONLY <unfinished ...>
[pid  7685] <... futex resumed>)        = 0
[pid  7686] <... open resumed>)         = 4
[pid  7685] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[  228.935700][ T7686] BTRFS info (device loop0): checking UUID tree
[pid  7686] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7685] <... futex resumed>)        = 0
[pid  7686] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  7685] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7686] <... ioctl resumed>)        = 0
[pid  7685] <... futex resumed>)        = 0
[pid  7686] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7685] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7686] <... futex resumed>)        = 0
[pid  7685] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7686] 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}} <unfinished ...>
[pid  7685] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7685] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7685] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7685] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7685] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7685] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7685] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 7704 attached
 => {parent_tid=[395]}, 88) = 395
[pid  7704] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  7685] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7704] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  7685] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7704] <... set_robust_list resumed>) = 0
[pid  7685] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7704] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7685] <... futex resumed>)        = 0
[pid  7704] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7685] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7704] open("./file0", O_RDONLY)   = 5
[pid  7704] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7685] <... futex resumed>)        = 0
[  229.011082][ T7686] BTRFS info (device loop0): balance: start -d -m
[  229.020476][ T7686] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  229.045453][ T7686] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7704] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7685] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7704] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7685] <... futex resumed>)        = 0
[pid  7704] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  7685] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7704] <... ioctl resumed>)        = 0
[pid  7704] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  229.199288][ T7686] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  229.223135][ T7686] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  7704] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7686] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7686] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7686] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7685] close(3)                    = 0
[pid  7685] close(4)                    = 0
[pid  7685] close(5)                    = 0
[pid  7685] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7685] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7685] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7685] close(9)                    = -1 EBADF (Bad file descriptor)
[  229.243360][ T7686] BTRFS info (device loop0): balance: ended with status: 0
[pid  7685] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7685] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7685] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7685] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7685] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7685] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7685] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7685] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7685] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7685] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7685] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7685] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7685] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7685] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7685] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7685] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7685] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7685] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7685] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7685] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7685] exit_group(0 <unfinished ...>
[pid  7686] <... futex resumed>)        = ?
[pid  7685] <... exit_group resumed>)   = ?
[pid  7686] +++ exited with 0 +++
[pid  7704] <... futex resumed>)        = ?
[pid  7704] +++ exited with 0 +++
[pid  7685] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=393, si_uid=0, si_status=0, si_utime=0, si_stime=46 /* 0.46 s */} ---
[pid  5073] umount2("./130", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./130", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./130/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./130/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./130/binderfs")    = 0
[pid  5073] umount2("./130/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./130/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./130/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./130/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./130/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./130/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./130")              = 0
[pid  5073] mkdir("./131", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7705 attached
 <unfinished ...>
[pid  7705] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7705] chdir("./131" <unfinished ...>
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 396
[pid  7705] <... chdir resumed>)        = 0
[pid  7705] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7705] setpgid(0, 0)               = 0
[pid  7705] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7705] write(3, "1000", 4)         = 4
[pid  7705] close(3)                    = 0
[pid  7705] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7705] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7705] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7705] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7705] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7705] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7706 attached
 <unfinished ...>
[pid  7706] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7705] <... clone3 resumed> => {parent_tid=[397]}, 88) = 397
[pid  7706] <... rseq resumed>)         = 0
[pid  7705] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7706] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7705] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7706] <... set_robust_list resumed>) = 0
[pid  7705] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7706] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7705] <... futex resumed>)        = 0
[pid  7706] memfd_create("syzkaller", 0 <unfinished ...>
[pid  7705] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7706] <... memfd_create resumed>) = 3
[pid  7706] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7706] 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) = 16777216
[pid  7706] munmap(0x7f877d82c000, 138412032) = 0
[pid  7706] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7706] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7706] close(3)                    = 0
[pid  7706] mkdir("./file0", 0777)      = 0
[  229.897546][ T7706] loop0: detected capacity change from 0 to 32768
[  229.915305][ T7706] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7706)
[  229.930892][ T7706] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  229.940193][ T7706] BTRFS info (device loop0): force clearing of disk cache
[  229.947346][ T7706] BTRFS info (device loop0): setting nodatasum
[  229.953509][ T7706] BTRFS info (device loop0): allowing degraded mounts
[  229.960351][ T7706] BTRFS info (device loop0): enabling disk space caching
[  229.967406][ T7706] BTRFS info (device loop0): disk space caching is enabled
[  229.989465][ T7706] BTRFS info (device loop0): enabling ssd optimizations
[  229.996513][ T7706] BTRFS info (device loop0): auto enabling async discard
[  230.004847][ T7706] BTRFS info (device loop0): rebuilding free space tree
[  230.017628][ T7706] BTRFS info (device loop0): disabling free space tree
[  230.024578][ T7706] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  230.034243][ T7706] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  7706] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7706] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7706] chdir("./file0")            = 0
[pid  7706] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7706] close(4)                    = 0
[pid  7706] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7705] <... futex resumed>)        = 0
[pid  7705] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7706] <... futex resumed>)        = 1
[pid  7705] <... futex resumed>)        = 0
[pid  7706] open("./file0", O_RDONLY <unfinished ...>
[pid  7705] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7706] <... open resumed>)         = 4
[pid  7706] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7705] <... futex resumed>)        = 0
[pid  7706] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7705] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7706] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7705] <... futex resumed>)        = 0
[pid  7706] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  7705] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7706] <... ioctl resumed>)        = 0
[  230.047227][ T7706] BTRFS info (device loop0): checking UUID tree
[pid  7706] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7705] <... futex resumed>)        = 0
[pid  7706] <... futex resumed>)        = 1
[pid  7705] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7706] 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}} <unfinished ...>
[pid  7705] <... futex resumed>)        = 0
[pid  7705] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7705] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7705] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7705] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7705] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7705] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 7724 attached
 => {parent_tid=[398]}, 88) = 398
[pid  7705] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7705] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7724] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7705] <... futex resumed>)        = 0
[pid  7724] <... rseq resumed>)         = 0
[pid  7705] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7724] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  7724] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[  230.113831][ T7706] BTRFS info (device loop0): balance: start -d -m
[  230.123267][ T7706] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  230.153607][ T7706] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7724] open("./file0", O_RDONLY)   = 5
[pid  7724] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7705] <... futex resumed>)        = 0
[pid  7724] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  7705] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7705] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7705] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  7724] <... ioctl resumed>)        = 0
[pid  7724] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  230.297414][ T7706] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  230.325444][ T7706] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  7724] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7706] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7706] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7706] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7705] close(3)                    = 0
[pid  7705] close(4)                    = 0
[pid  7705] close(5)                    = 0
[pid  7705] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7705] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7705] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7705] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7705] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7705] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7705] close(12)                   = -1 EBADF (Bad file descriptor)
[  230.345545][ T7706] BTRFS info (device loop0): balance: ended with status: 0
[pid  7705] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7705] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7705] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7705] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7705] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7705] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7705] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7705] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7705] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7705] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7705] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7705] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7705] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7705] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7705] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7705] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7705] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7705] exit_group(0 <unfinished ...>
[pid  7724] <... futex resumed>)        = ?
[pid  7724] +++ exited with 0 +++
[pid  7705] <... exit_group resumed>)   = ?
[pid  7706] <... futex resumed>)        = ?
[pid  7706] +++ exited with 0 +++
[pid  7705] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=396, si_uid=0, si_status=0, si_utime=0, si_stime=43 /* 0.43 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./131", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./131", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./131/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./131/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./131/binderfs")    = 0
[pid  5073] umount2("./131/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./131/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./131/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./131/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./131/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./131/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./131")              = 0
[pid  5073] mkdir("./132", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7725 attached
, child_tidptr=0x5555570a9690) = 399
[pid  7725] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7725] chdir("./132")              = 0
[pid  7725] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7725] setpgid(0, 0)               = 0
[pid  7725] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7725] write(3, "1000", 4)         = 4
[pid  7725] close(3)                    = 0
[pid  7725] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7725] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7725] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7725] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7725] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7725] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7726 attached
 <unfinished ...>
[pid  7726] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7725] <... clone3 resumed> => {parent_tid=[400]}, 88) = 400
[pid  7726] <... rseq resumed>)         = 0
[pid  7726] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7725] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7726] <... set_robust_list resumed>) = 0
[pid  7725] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7726] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7725] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7726] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7725] <... futex resumed>)        = 0
[pid  7726] memfd_create("syzkaller", 0 <unfinished ...>
[pid  7725] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7726] <... memfd_create resumed>) = 3
[pid  7726] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7726] 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) = 16777216
[pid  7726] munmap(0x7f877d82c000, 138412032) = 0
[pid  7726] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7726] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7726] close(3)                    = 0
[pid  7726] mkdir("./file0", 0777)      = 0
[  231.039937][ T7726] loop0: detected capacity change from 0 to 32768
[  231.055106][ T7726] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7726)
[  231.070960][ T7726] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  231.080342][ T7726] BTRFS info (device loop0): force clearing of disk cache
[  231.087546][ T7726] BTRFS info (device loop0): setting nodatasum
[  231.094181][ T7726] BTRFS info (device loop0): allowing degraded mounts
[  231.100949][ T7726] BTRFS info (device loop0): enabling disk space caching
[  231.107988][ T7726] BTRFS info (device loop0): disk space caching is enabled
[  231.130780][ T7726] BTRFS info (device loop0): enabling ssd optimizations
[  231.137791][ T7726] BTRFS info (device loop0): auto enabling async discard
[  231.145864][ T7726] BTRFS info (device loop0): rebuilding free space tree
[  231.157659][ T7726] BTRFS info (device loop0): disabling free space tree
[  231.164597][ T7726] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  7726] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7726] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7726] chdir("./file0")            = 0
[pid  7726] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7726] close(4)                    = 0
[pid  7726] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7725] <... futex resumed>)        = 0
[pid  7726] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable)
[pid  7725] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7726] open("./file0", O_RDONLY <unfinished ...>
[  231.174311][ T7726] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  231.188342][ T7726] BTRFS info (device loop0): checking UUID tree
[pid  7725] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7726] <... open resumed>)         = 4
[pid  7726] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7726] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7725] <... futex resumed>)        = 0
[pid  7725] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7726] <... futex resumed>)        = 0
[pid  7725] <... futex resumed>)        = 1
[pid  7726] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  7725] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7726] <... ioctl resumed>)        = 0
[pid  7726] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7725] <... futex resumed>)        = 0
[pid  7726] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7725] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7726] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7725] <... futex resumed>)        = 0
[pid  7726] 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}} <unfinished ...>
[pid  7725] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7725] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7725] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7725] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7725] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7725] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 7744 attached
 <unfinished ...>
[pid  7744] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7725] <... clone3 resumed> => {parent_tid=[401]}, 88) = 401
[pid  7725] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7725] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7725] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7744] <... rseq resumed>)         = 0
[pid  7744] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  7744] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7744] open("./file0", O_RDONLY)   = 5
[pid  7744] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7725] <... futex resumed>)        = 0
[pid  7744] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7725] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7744] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7725] <... futex resumed>)        = 0
[pid  7744] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  231.262575][ T7726] BTRFS info (device loop0): balance: start -d -m
[  231.271799][ T7726] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  231.300195][ T7726] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7725] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7744] <... ioctl resumed>)        = 0
[pid  7744] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  231.468205][ T7726] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  231.492248][ T7726] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  7744] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7726] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7726] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7725] close(3)                    = 0
[pid  7725] close(4)                    = 0
[pid  7725] close(5 <unfinished ...>
[pid  7726] <... futex resumed>)        = 0
[pid  7725] <... close resumed>)        = 0
[pid  7726] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7725] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7725] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7725] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7725] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7725] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7725] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7725] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7725] close(13)                   = -1 EBADF (Bad file descriptor)
[  231.512158][ T7726] BTRFS info (device loop0): balance: ended with status: 0
[pid  7725] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7725] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7725] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7725] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7725] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7725] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7725] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7725] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7725] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7725] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7725] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7725] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7725] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7725] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7725] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7725] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7725] exit_group(0 <unfinished ...>
[pid  7744] <... futex resumed>)        = ?
[pid  7744] +++ exited with 0 +++
[pid  7725] <... exit_group resumed>)   = ?
[pid  7726] <... futex resumed>)        = ?
[pid  7726] +++ exited with 0 +++
[pid  7725] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=399, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=39 /* 0.39 s */} ---
[pid  5073] umount2("./132", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./132", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./132/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./132/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./132/binderfs")    = 0
[pid  5073] umount2("./132/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./132/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./132/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./132/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./132/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./132/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./132")              = 0
[pid  5073] mkdir("./133", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7746 attached
, child_tidptr=0x5555570a9690) = 402
[pid  7746] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7746] chdir("./133")              = 0
[pid  7746] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7746] setpgid(0, 0)               = 0
[pid  7746] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7746] write(3, "1000", 4)         = 4
[pid  7746] close(3)                    = 0
[pid  7746] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7746] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7746] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7746] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7746] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7746] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7747 attached
 <unfinished ...>
[pid  7747] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  7747] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7746] <... clone3 resumed> => {parent_tid=[403]}, 88) = 403
[pid  7747] <... set_robust_list resumed>) = 0
[pid  7746] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7747] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7746] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7747] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7746] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7747] memfd_create("syzkaller", 0 <unfinished ...>
[pid  7746] <... futex resumed>)        = 0
[pid  7747] <... memfd_create resumed>) = 3
[pid  7747] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7746] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7747] 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) = 16777216
[pid  7747] munmap(0x7f877d82c000, 138412032) = 0
[pid  7747] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7747] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7747] close(3)                    = 0
[pid  7747] mkdir("./file0", 0777)      = 0
[  232.115655][ T7747] loop0: detected capacity change from 0 to 32768
[  232.130382][ T7747] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7747)
[  232.146624][ T7747] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  232.155892][ T7747] BTRFS info (device loop0): force clearing of disk cache
[  232.162987][ T7747] BTRFS info (device loop0): setting nodatasum
[  232.169167][ T7747] BTRFS info (device loop0): allowing degraded mounts
[  232.176091][ T7747] BTRFS info (device loop0): enabling disk space caching
[  232.183129][ T7747] BTRFS info (device loop0): disk space caching is enabled
[  232.205955][ T7747] BTRFS info (device loop0): enabling ssd optimizations
[  232.212927][ T7747] BTRFS info (device loop0): auto enabling async discard
[  232.221017][ T7747] BTRFS info (device loop0): rebuilding free space tree
[  232.232658][ T7747] BTRFS info (device loop0): disabling free space tree
[  232.239588][ T7747] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  232.249244][ T7747] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  7747] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7747] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7747] chdir("./file0")            = 0
[pid  7747] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7747] close(4)                    = 0
[  232.262769][ T7747] BTRFS info (device loop0): checking UUID tree
[pid  7747] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7746] <... futex resumed>)        = 0
[pid  7747] open("./file0", O_RDONLY <unfinished ...>
[pid  7746] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7747] <... open resumed>)         = 4
[pid  7746] <... futex resumed>)        = 0
[pid  7746] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7747] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7746] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7747] <... futex resumed>)        = 0
[pid  7746] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7747] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  7746] <... futex resumed>)        = 0
[pid  7747] <... ioctl resumed>)        = 0
[pid  7746] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7747] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7746] <... futex resumed>)        = 0
[pid  7747] <... futex resumed>)        = 1
[pid  7746] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7747] 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}} <unfinished ...>
[pid  7746] <... futex resumed>)        = 0
[pid  7746] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7746] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7746] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7746] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7746] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7746] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[404]}, 88) = 404
[pid  7746] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
./strace-static-x86_64: Process 7765 attached
[pid  7746] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7746] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7765] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  7765] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  7765] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7765] open("./file0", O_RDONLY)   = 5
[pid  7765] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7746] <... futex resumed>)        = 0
[pid  7765] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7746] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7765] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7746] <... futex resumed>)        = 0
[pid  7765] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  232.327071][ T7747] BTRFS info (device loop0): balance: start -d -m
[  232.335717][ T7747] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  232.367064][ T7747] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7746] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7765] <... ioctl resumed>)        = 0
[pid  7765] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  232.476390][ T7747] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  7765] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7747] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7747] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7747] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7746] close(3)                    = 0
[pid  7746] close(4)                    = 0
[pid  7746] close(5)                    = 0
[pid  7746] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7746] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7746] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7746] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7746] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7746] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7746] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7746] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7746] close(14)                   = -1 EBADF (Bad file descriptor)
[  232.544941][ T7747] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  232.564278][ T7747] BTRFS info (device loop0): balance: ended with status: 0
[pid  7746] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7746] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7746] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7746] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7746] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7746] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7746] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7746] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7746] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7746] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7746] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7746] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7746] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7746] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7746] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7746] exit_group(0 <unfinished ...>
[pid  7765] <... futex resumed>)        = ?
[pid  7747] <... futex resumed>)        = ?
[pid  7746] <... exit_group resumed>)   = ?
[pid  7765] +++ exited with 0 +++
[pid  7747] +++ exited with 0 +++
[pid  7746] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=402, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=40 /* 0.40 s */} ---
[pid  5073] umount2("./133", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./133", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./133/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./133/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./133/binderfs")    = 0
[pid  5073] umount2("./133/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./133/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./133/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./133/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./133/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./133/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./133")              = 0
[pid  5073] mkdir("./134", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7766 attached
, child_tidptr=0x5555570a9690) = 405
[pid  7766] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7766] chdir("./134")              = 0
[pid  7766] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7766] setpgid(0, 0)               = 0
[pid  7766] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7766] write(3, "1000", 4)         = 4
[pid  7766] close(3)                    = 0
[pid  7766] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7766] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7766] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7766] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7766] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7766] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7767 attached
 => {parent_tid=[406]}, 88) = 406
[pid  7767] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  7766] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7767] set_robust_list(0x7f8785c4c9a0, 24) = 0
[pid  7767] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7766] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7767] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7766] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7766] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7767] memfd_create("syzkaller", 0) = 3
[pid  7767] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7767] 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) = 16777216
[pid  7767] munmap(0x7f877d82c000, 138412032) = 0
[pid  7767] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7767] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7767] close(3)                    = 0
[pid  7767] mkdir("./file0", 0777)      = 0
[  233.181532][ T7767] loop0: detected capacity change from 0 to 32768
[  233.194944][ T7767] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7767)
[  233.211768][ T7767] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  233.221488][ T7767] BTRFS info (device loop0): force clearing of disk cache
[  233.228775][ T7767] BTRFS info (device loop0): setting nodatasum
[  233.235154][ T7767] BTRFS info (device loop0): allowing degraded mounts
[  233.241940][ T7767] BTRFS info (device loop0): enabling disk space caching
[  233.249000][ T7767] BTRFS info (device loop0): disk space caching is enabled
[  233.270169][ T7767] BTRFS info (device loop0): enabling ssd optimizations
[  233.277194][ T7767] BTRFS info (device loop0): auto enabling async discard
[  233.285941][ T7767] BTRFS info (device loop0): rebuilding free space tree
[  233.298046][ T7767] BTRFS info (device loop0): disabling free space tree
[  233.305115][ T7767] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  233.314831][ T7767] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  7767] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7767] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7767] chdir("./file0")            = 0
[pid  7767] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7767] close(4)                    = 0
[pid  7767] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7767] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7766] <... futex resumed>)        = 0
[pid  7766] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7767] <... futex resumed>)        = 0
[pid  7766] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7767] open("./file0", O_RDONLY)   = 4
[  233.328032][ T7767] BTRFS info (device loop0): checking UUID tree
[pid  7767] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7766] <... futex resumed>)        = 0
[pid  7767] <... futex resumed>)        = 1
[pid  7766] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7767] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  7766] <... futex resumed>)        = 0
[pid  7767] <... ioctl resumed>)        = 0
[pid  7766] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7767] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7767] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7766] <... futex resumed>)        = 0
[pid  7766] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7767] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7766] <... futex resumed>)        = 0
[pid  7767] 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}} <unfinished ...>
[  233.412554][ T7767] BTRFS info (device loop0): balance: start -d -m
[  233.422383][ T7767] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  7766] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7766] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7766] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7766] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7766] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7766] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[407]}, 88) = 407
[pid  7766] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7766] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7766] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 7785 attached
 <unfinished ...>
[pid  7785] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  7785] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  7785] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7785] open("./file0", O_RDONLY)   = 5
[pid  7785] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7766] <... futex resumed>)        = 0
[pid  7785] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7766] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7785] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7766] <... futex resumed>)        = 0
[pid  7785] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  233.453273][ T7767] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7766] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7785] <... ioctl resumed>)        = 0
[pid  7785] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7785] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7767] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7767] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7767] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7766] close(3)                    = 0
[pid  7766] close(4)                    = 0
[pid  7766] close(5)                    = 0
[  233.610305][ T7767] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  233.634372][ T7767] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  233.652832][ T7767] BTRFS info (device loop0): balance: ended with status: 0
[pid  7766] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7766] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7766] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7766] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7766] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7766] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7766] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7766] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7766] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7766] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7766] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7766] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7766] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7766] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7766] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7766] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7766] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7766] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7766] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7766] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7766] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7766] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7766] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7766] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7766] exit_group(0 <unfinished ...>
[pid  7785] <... futex resumed>)        = ?
[pid  7785] +++ exited with 0 +++
[pid  7767] <... futex resumed>)        = ?
[pid  7766] <... exit_group resumed>)   = ?
[pid  7767] +++ exited with 0 +++
[pid  7766] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=405, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=46 /* 0.46 s */} ---
[pid  5073] umount2("./134", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./134", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./134/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./134/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./134/binderfs")    = 0
[pid  5073] umount2("./134/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./134/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./134/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./134/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./134/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./134/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./134")              = 0
[pid  5073] mkdir("./135", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7788 attached
, child_tidptr=0x5555570a9690) = 408
[pid  7788] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7788] chdir("./135")              = 0
[pid  7788] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7788] setpgid(0, 0)               = 0
[pid  7788] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7788] write(3, "1000", 4)         = 4
[pid  7788] close(3)                    = 0
[pid  7788] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7788] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7788] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7788] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7788] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7788] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7789 attached
 <unfinished ...>
[pid  7789] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  7788] <... clone3 resumed> => {parent_tid=[409]}, 88) = 409
[pid  7789] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7788] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7789] <... set_robust_list resumed>) = 0
[pid  7788] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7789] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7788] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7789] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7789] memfd_create("syzkaller", 0 <unfinished ...>
[pid  7788] <... futex resumed>)        = 0
[pid  7788] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7789] <... memfd_create resumed>) = 3
[pid  7789] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7789] 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) = 16777216
[pid  7789] munmap(0x7f877d82c000, 138412032) = 0
[pid  7789] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7789] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7789] close(3)                    = 0
[pid  7789] mkdir("./file0", 0777)      = 0
[  234.214074][ T7789] loop0: detected capacity change from 0 to 32768
[  234.224056][ T7789] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7789)
[  234.240089][ T7789] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  234.249444][ T7789] BTRFS info (device loop0): force clearing of disk cache
[  234.256665][ T7789] BTRFS info (device loop0): setting nodatasum
[  234.262830][ T7789] BTRFS info (device loop0): allowing degraded mounts
[  234.269980][ T7789] BTRFS info (device loop0): enabling disk space caching
[  234.277070][ T7789] BTRFS info (device loop0): disk space caching is enabled
[  234.298379][ T7789] BTRFS info (device loop0): enabling ssd optimizations
[  234.305342][ T7789] BTRFS info (device loop0): auto enabling async discard
[pid  7789] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7789] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7789] chdir("./file0")            = 0
[pid  7789] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7789] close(4)                    = 0
[pid  7789] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7789] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7788] <... futex resumed>)        = 0
[pid  7788] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7789] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7788] <... futex resumed>)        = 0
[pid  7789] open("./file0", O_RDONLY <unfinished ...>
[pid  7788] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7789] <... open resumed>)         = 4
[pid  7789] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7788] <... futex resumed>)        = 0
[pid  7788] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7789] <... futex resumed>)        = 1
[pid  7788] <... futex resumed>)        = 0
[pid  7789] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[  234.313244][ T7789] BTRFS info (device loop0): rebuilding free space tree
[  234.325194][ T7789] BTRFS info (device loop0): disabling free space tree
[  234.332080][ T7789] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  234.341751][ T7789] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  234.355258][ T7789] BTRFS info (device loop0): checking UUID tree
[pid  7788] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7789] <... ioctl resumed>)        = 0
[pid  7789] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7789] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7788] <... futex resumed>)        = 0
[pid  7788] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7789] <... futex resumed>)        = 0
[pid  7788] <... futex resumed>)        = 1
[pid  7789] 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}} <unfinished ...>
[  234.410781][ T7789] BTRFS info (device loop0): balance: start -d -m
[  234.422426][ T7789] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  7788] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7788] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7788] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7788] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7788] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7788] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[410]}, 88) = 410
[pid  7788] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
./strace-static-x86_64: Process 7807 attached
[pid  7788] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7788] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7807] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  7807] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  7807] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7807] open("./file0", O_RDONLY)   = 5
[pid  7807] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7788] <... futex resumed>)        = 0
[pid  7807] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7788] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7807] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7788] <... futex resumed>)        = 0
[pid  7807] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  234.452869][ T7789] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7788] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7788] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  7807] <... ioctl resumed>)        = 0
[pid  7807] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  234.604411][ T7789] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  234.629152][ T7789] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  7807] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7789] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7789] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7788] close(3)                    = 0
[pid  7789] <... futex resumed>)        = 0
[pid  7788] close(4 <unfinished ...>
[pid  7789] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7788] <... close resumed>)        = 0
[pid  7788] close(5)                    = 0
[pid  7788] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7788] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7788] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7788] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7788] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7788] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7788] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7788] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7788] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7788] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7788] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7788] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7788] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7788] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7788] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7788] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7788] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7788] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7788] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7788] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7788] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7788] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7788] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7788] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7788] exit_group(0 <unfinished ...>
[pid  7807] <... futex resumed>)        = ?
[pid  7789] <... futex resumed>)        = ?
[pid  7788] <... exit_group resumed>)   = ?
[pid  7807] +++ exited with 0 +++
[pid  7789] +++ exited with 0 +++
[pid  7788] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=408, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=43 /* 0.43 s */} ---
[pid  5073] umount2("./135", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./135", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./135/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./135/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./135/binderfs")    = 0
[  234.648430][ T7789] BTRFS info (device loop0): balance: ended with status: 0
[pid  5073] umount2("./135/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./135/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./135/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./135/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./135/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./135/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./135")              = 0
[pid  5073] mkdir("./136", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7808 attached
, child_tidptr=0x5555570a9690) = 411
[pid  7808] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7808] chdir("./136")              = 0
[pid  7808] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7808] setpgid(0, 0)               = 0
[pid  7808] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7808] write(3, "1000", 4)         = 4
[pid  7808] close(3)                    = 0
[pid  7808] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7808] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7808] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7808] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7808] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7808] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7809 attached
 => {parent_tid=[412]}, 88) = 412
[pid  7809] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  7809] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7808] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7809] <... set_robust_list resumed>) = 0
[pid  7808] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7809] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7808] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7809] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7808] <... futex resumed>)        = 0
[pid  7809] memfd_create("syzkaller", 0 <unfinished ...>
[pid  7808] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7809] <... memfd_create resumed>) = 3
[pid  7809] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7809] 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) = 16777216
[pid  7809] munmap(0x7f877d82c000, 138412032) = 0
[pid  7809] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7809] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7809] close(3)                    = 0
[pid  7809] mkdir("./file0", 0777)      = 0
[  235.103112][ T7809] loop0: detected capacity change from 0 to 32768
[  235.127609][ T7809] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7809)
[  235.144626][ T7809] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  235.153911][ T7809] BTRFS info (device loop0): force clearing of disk cache
[  235.161028][ T7809] BTRFS info (device loop0): setting nodatasum
[  235.167344][ T7809] BTRFS info (device loop0): allowing degraded mounts
[  235.174217][ T7809] BTRFS info (device loop0): enabling disk space caching
[  235.181257][ T7809] BTRFS info (device loop0): disk space caching is enabled
[  235.204578][ T7809] BTRFS info (device loop0): enabling ssd optimizations
[  235.211532][ T7809] BTRFS info (device loop0): auto enabling async discard
[  235.219741][ T7809] BTRFS info (device loop0): rebuilding free space tree
[  235.231741][ T7809] BTRFS info (device loop0): disabling free space tree
[  235.238771][ T7809] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  7809] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7809] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7809] chdir("./file0")            = 0
[pid  7809] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7809] close(4)                    = 0
[pid  7809] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[  235.248436][ T7809] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  235.261681][ T7809] BTRFS info (device loop0): checking UUID tree
[pid  7809] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7808] <... futex resumed>)        = 0
[pid  7808] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7809] <... futex resumed>)        = 0
[pid  7808] <... futex resumed>)        = 1
[pid  7809] open("./file0", O_RDONLY)   = 4
[pid  7809] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7808] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7809] <... futex resumed>)        = 0
[pid  7809] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7808] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7808] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7809] <... futex resumed>)        = 0
[pid  7808] <... futex resumed>)        = 1
[pid  7809] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  7808] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7809] <... ioctl resumed>)        = 0
[pid  7809] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7808] <... futex resumed>)        = 0
[pid  7809] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable)
[pid  7808] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7809] 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}} <unfinished ...>
[pid  7808] <... futex resumed>)        = 0
[  235.360075][ T7809] BTRFS info (device loop0): balance: start -d -m
[  235.371342][ T7809] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  7808] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7808] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7808] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7808] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7808] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7808] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 7827 attached
 <unfinished ...>
[pid  7827] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7808] <... clone3 resumed> => {parent_tid=[413]}, 88) = 413
[pid  7808] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7827] <... rseq resumed>)         = 0
[pid  7808] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7808] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7827] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  7808] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7827] <... set_robust_list resumed>) = 0
[pid  7827] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7827] open("./file0", O_RDONLY)   = 5
[pid  7827] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7808] <... futex resumed>)        = 0
[pid  7808] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7827] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  7808] <... futex resumed>)        = 0
[  235.400903][ T7809] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7808] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[  235.494230][ T7809] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  7827] <... ioctl resumed>)        = 0
[pid  7827] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7827] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7809] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7809] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7808] close(3 <unfinished ...>
[pid  7809] <... futex resumed>)        = 0
[pid  7808] <... close resumed>)        = 0
[pid  7809] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7808] close(4)                    = 0
[pid  7808] close(5)                    = 0
[pid  7808] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7808] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7808] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7808] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7808] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7808] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7808] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7808] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7808] close(14)                   = -1 EBADF (Bad file descriptor)
[  235.563213][ T7809] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  235.582366][ T7809] BTRFS info (device loop0): balance: ended with status: 0
[pid  7808] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7808] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7808] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7808] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7808] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7808] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7808] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7808] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7808] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7808] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7808] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7808] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7808] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7808] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7808] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7808] exit_group(0)               = ?
[pid  7827] <... futex resumed>)        = ?
[pid  7809] <... futex resumed>)        = ?
[pid  7827] +++ exited with 0 +++
[pid  7809] +++ exited with 0 +++
[pid  7808] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=411, si_uid=0, si_status=0, si_utime=0, si_stime=49 /* 0.49 s */} ---
[pid  5073] umount2("./136", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./136", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./136/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./136/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./136/binderfs")    = 0
[pid  5073] umount2("./136/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./136/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./136/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./136/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./136/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./136/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./136")              = 0
[pid  5073] mkdir("./137", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555570a9690) = 414
./strace-static-x86_64: Process 7831 attached
[pid  7831] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7831] chdir("./137")              = 0
[pid  7831] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7831] setpgid(0, 0)               = 0
[pid  7831] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7831] write(3, "1000", 4)         = 4
[pid  7831] close(3)                    = 0
[pid  7831] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7831] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7831] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7831] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7831] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7831] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7832 attached
 <unfinished ...>
[pid  7832] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  7832] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7831] <... clone3 resumed> => {parent_tid=[415]}, 88) = 415
[pid  7832] <... set_robust_list resumed>) = 0
[pid  7831] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7832] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7831] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7832] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7831] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7832] memfd_create("syzkaller", 0 <unfinished ...>
[pid  7831] <... futex resumed>)        = 0
[pid  7831] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7832] <... memfd_create resumed>) = 3
[pid  7832] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7832] 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) = 16777216
[pid  7832] munmap(0x7f877d82c000, 138412032) = 0
[pid  7832] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7832] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7832] close(3)                    = 0
[pid  7832] mkdir("./file0", 0777)      = 0
[  236.208731][ T7832] loop0: detected capacity change from 0 to 32768
[  236.233445][ T7832] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7832)
[  236.249145][ T7832] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  236.258440][ T7832] BTRFS info (device loop0): force clearing of disk cache
[  236.265636][ T7832] BTRFS info (device loop0): setting nodatasum
[  236.271781][ T7832] BTRFS info (device loop0): allowing degraded mounts
[  236.278585][ T7832] BTRFS info (device loop0): enabling disk space caching
[  236.285635][ T7832] BTRFS info (device loop0): disk space caching is enabled
[  236.307117][ T7832] BTRFS info (device loop0): enabling ssd optimizations
[  236.314105][ T7832] BTRFS info (device loop0): auto enabling async discard
[  236.321967][ T7832] BTRFS info (device loop0): rebuilding free space tree
[  236.334601][ T7832] BTRFS info (device loop0): disabling free space tree
[  236.341485][ T7832] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  7832] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7832] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7832] chdir("./file0")            = 0
[pid  7832] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7832] close(4)                    = 0
[pid  7832] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7831] <... futex resumed>)        = 0
[pid  7831] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7832] open("./file0", O_RDONLY <unfinished ...>
[pid  7831] <... futex resumed>)        = 0
[pid  7832] <... open resumed>)         = 4
[  236.351173][ T7832] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  236.364738][ T7832] BTRFS info (device loop0): checking UUID tree
[pid  7831] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7832] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7831] <... futex resumed>)        = 0
[pid  7831] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7831] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7832] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  7832] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7831] <... futex resumed>)        = 0
[pid  7832] <... futex resumed>)        = 1
[pid  7831] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7832] 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}} <unfinished ...>
[  236.450234][ T7832] BTRFS info (device loop0): balance: start -d -m
[  236.462519][ T7832] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  7831] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7831] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7831] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7831] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7831] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7831] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 7850 attached
 <unfinished ...>
[pid  7850] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  7831] <... clone3 resumed> => {parent_tid=[416]}, 88) = 416
[pid  7850] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  7831] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7850] <... set_robust_list resumed>) = 0
[pid  7850] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7831] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7850] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7850] open("./file0", O_RDONLY <unfinished ...>
[pid  7831] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7850] <... open resumed>)         = 5
[pid  7831] <... futex resumed>)        = 0
[pid  7831] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7850] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7831] <... futex resumed>)        = 0
[pid  7850] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  7831] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  236.497663][ T7832] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7831] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7850] <... ioctl resumed>)        = 0
[pid  7850] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7850] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7832] <... ioctl resumed>)        = -1 ENOSPC (No space left on device)
[pid  7832] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7832] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7831] close(3)                    = 0
[pid  7831] close(4)                    = 0
[pid  7831] close(5)                    = 0
[pid  7831] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7831] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7831] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7831] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7831] close(10)                   = -1 EBADF (Bad file descriptor)
[  236.631344][ T7832] BTRFS info (device loop0): 1 enospc errors during balance
[  236.638697][ T7832] BTRFS info (device loop0): balance: ended with status: -28
[pid  7831] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7831] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7831] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7831] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7831] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7831] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7831] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7831] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7831] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7831] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7831] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7831] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7831] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7831] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7831] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7831] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7831] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7831] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7831] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7831] exit_group(0 <unfinished ...>
[pid  7850] <... futex resumed>)        = ?
[pid  7832] <... futex resumed>)        = ?
[pid  7850] +++ exited with 0 +++
[pid  7831] <... exit_group resumed>)   = ?
[pid  7832] +++ exited with 0 +++
[pid  7831] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=414, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=37 /* 0.37 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./137", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./137", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./137/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./137/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./137/binderfs")    = 0
[pid  5073] umount2("./137/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./137/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./137/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./137/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./137/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./137/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./137")              = 0
[pid  5073] mkdir("./138", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7851 attached
, child_tidptr=0x5555570a9690) = 417
[pid  7851] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7851] chdir("./138")              = 0
[pid  7851] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7851] setpgid(0, 0)               = 0
[pid  7851] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7851] write(3, "1000", 4)         = 4
[pid  7851] close(3)                    = 0
[pid  7851] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7851] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7851] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7851] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7851] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7851] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7852 attached
 <unfinished ...>
[pid  7852] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7851] <... clone3 resumed> => {parent_tid=[418]}, 88) = 418
[pid  7852] <... rseq resumed>)         = 0
[pid  7851] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7852] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7851] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7852] <... set_robust_list resumed>) = 0
[pid  7851] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7852] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7851] <... futex resumed>)        = 0
[pid  7852] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7851] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7852] memfd_create("syzkaller", 0) = 3
[pid  7852] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7852] 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) = 16777216
[pid  7852] munmap(0x7f877d82c000, 138412032) = 0
[pid  7852] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7852] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7852] close(3)                    = 0
[pid  7852] mkdir("./file0", 0777)      = 0
[  237.230235][ T7852] loop0: detected capacity change from 0 to 32768
[  237.254414][ T7852] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7852)
[  237.270425][ T7852] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  237.279710][ T7852] BTRFS info (device loop0): force clearing of disk cache
[  237.286846][ T7852] BTRFS info (device loop0): setting nodatasum
[  237.292990][ T7852] BTRFS info (device loop0): allowing degraded mounts
[  237.299816][ T7852] BTRFS info (device loop0): enabling disk space caching
[  237.306888][ T7852] BTRFS info (device loop0): disk space caching is enabled
[  237.328457][ T7852] BTRFS info (device loop0): enabling ssd optimizations
[  237.335521][ T7852] BTRFS info (device loop0): auto enabling async discard
[  237.343623][ T7852] BTRFS info (device loop0): rebuilding free space tree
[  237.357112][ T7852] BTRFS info (device loop0): disabling free space tree
[  237.364248][ T7852] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  7852] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7852] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7852] chdir("./file0")            = 0
[pid  7852] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7852] close(4)                    = 0
[pid  7852] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7851] <... futex resumed>)        = 0
[pid  7852] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable)
[pid  7851] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7851] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7852] open("./file0", O_RDONLY)   = 4
[  237.373972][ T7852] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  237.386875][ T7852] BTRFS info (device loop0): checking UUID tree
[pid  7852] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7851] <... futex resumed>)        = 0
[pid  7851] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7852] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  7851] <... futex resumed>)        = 0
[pid  7852] <... ioctl resumed>)        = 0
[pid  7851] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7852] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7852] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7851] <... futex resumed>)        = 0
[pid  7851] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7852] <... futex resumed>)        = 0
[pid  7851] <... futex resumed>)        = 1
[pid  7852] 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}} <unfinished ...>
[pid  7851] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7851] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7851] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7851] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7851] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7851] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[419]}, 88) = 419
[pid  7851] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7851] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 7870 attached
) = 0
[pid  7851] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7870] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  7870] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  7870] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7870] open("./file0", O_RDONLY)   = 5
[pid  7870] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7870] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7851] <... futex resumed>)        = 0
[  237.464625][ T7852] BTRFS info (device loop0): balance: start -d -m
[  237.475124][ T7852] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  237.498724][ T7852] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7851] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7870] <... futex resumed>)        = 0
[pid  7870] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  7851] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[  237.585219][ T7852] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  7870] <... ioctl resumed>)        = 0
[pid  7870] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7870] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7852] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7852] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7852] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7851] close(3)                    = 0
[pid  7851] close(4)                    = 0
[pid  7851] close(5)                    = 0
[pid  7851] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7851] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7851] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7851] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7851] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7851] close(11)                   = -1 EBADF (Bad file descriptor)
[  237.682805][ T7852] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  237.702832][ T7852] BTRFS info (device loop0): balance: ended with status: 0
[pid  7851] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7851] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7851] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7851] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7851] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7851] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7851] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7851] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7851] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7851] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7851] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7851] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7851] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7851] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7851] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7851] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7851] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7851] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7851] exit_group(0)               = ?
[pid  7870] <... futex resumed>)        = ?
[pid  7852] <... futex resumed>)        = ?
[pid  7870] +++ exited with 0 +++
[pid  7852] +++ exited with 0 +++
[pid  7851] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=417, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=43 /* 0.43 s */} ---
[pid  5073] umount2("./138", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./138", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./138/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./138/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./138/binderfs")    = 0
[pid  5073] umount2("./138/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./138/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./138/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./138/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./138/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./138/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./138")              = 0
[pid  5073] mkdir("./139", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7871 attached
, child_tidptr=0x5555570a9690) = 420
[pid  7871] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7871] chdir("./139")              = 0
[pid  7871] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7871] setpgid(0, 0)               = 0
[pid  7871] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7871] write(3, "1000", 4)         = 4
[pid  7871] close(3)                    = 0
[pid  7871] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7871] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7871] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7871] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7871] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7871] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7872 attached
 => {parent_tid=[421]}, 88) = 421
[pid  7872] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  7871] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7872] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7871] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7872] <... set_robust_list resumed>) = 0
[pid  7871] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7872] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7871] <... futex resumed>)        = 0
[pid  7872] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7871] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7872] memfd_create("syzkaller", 0) = 3
[pid  7872] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7872] 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) = 16777216
[pid  7872] munmap(0x7f877d82c000, 138412032) = 0
[pid  7872] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7872] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7872] close(3)                    = 0
[pid  7872] mkdir("./file0", 0777)      = 0
[  238.337898][ T7872] loop0: detected capacity change from 0 to 32768
[  238.362350][ T7872] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7872)
[  238.379307][ T7872] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  238.388592][ T7872] BTRFS info (device loop0): force clearing of disk cache
[  238.395745][ T7872] BTRFS info (device loop0): setting nodatasum
[  238.401890][ T7872] BTRFS info (device loop0): allowing degraded mounts
[  238.408733][ T7872] BTRFS info (device loop0): enabling disk space caching
[  238.415804][ T7872] BTRFS info (device loop0): disk space caching is enabled
[  238.437423][ T7872] BTRFS info (device loop0): enabling ssd optimizations
[  238.444397][ T7872] BTRFS info (device loop0): auto enabling async discard
[  238.452735][ T7872] BTRFS info (device loop0): rebuilding free space tree
[  238.465104][ T7872] BTRFS info (device loop0): disabling free space tree
[  238.471995][ T7872] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  7872] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7872] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7872] chdir("./file0")            = 0
[pid  7872] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7872] close(4)                    = 0
[pid  7872] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7872] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7871] <... futex resumed>)        = 0
[pid  7871] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7872] <... futex resumed>)        = 0
[pid  7871] <... futex resumed>)        = 1
[pid  7871] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[  238.481670][ T7872] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  238.494971][ T7872] BTRFS info (device loop0): checking UUID tree
[pid  7872] open("./file0", O_RDONLY)   = 4
[pid  7872] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7871] <... futex resumed>)        = 0
[pid  7871] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7872] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  7871] <... futex resumed>)        = 0
[pid  7872] <... ioctl resumed>)        = 0
[pid  7871] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7872] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7871] <... futex resumed>)        = 0
[pid  7872] 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}} <unfinished ...>
[pid  7871] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7871] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7871] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7871] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7871] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7871] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7871] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 7890 attached
 <unfinished ...>
[pid  7890] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7871] <... clone3 resumed> => {parent_tid=[422]}, 88) = 422
[pid  7890] <... rseq resumed>)         = 0
[pid  7871] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7890] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  7871] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7890] <... set_robust_list resumed>) = 0
[pid  7871] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7890] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7871] <... futex resumed>)        = 0
[pid  7890] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7871] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7890] open("./file0", O_RDONLY)   = 5
[pid  7890] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7871] <... futex resumed>)        = 0
[pid  7890] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7871] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7890] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7871] <... futex resumed>)        = 0
[pid  7890] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  238.569350][ T7872] BTRFS info (device loop0): balance: start -d -m
[  238.579420][ T7872] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  238.608120][ T7872] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7871] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7890] <... ioctl resumed>)        = 0
[pid  7890] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7890] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7872] <... ioctl resumed>)        = -1 ENOSPC (No space left on device)
[pid  7872] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7871] close(3 <unfinished ...>
[pid  7872] <... futex resumed>)        = 0
[pid  7871] <... close resumed>)        = 0
[pid  7872] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7871] close(4)                    = 0
[pid  7871] close(5)                    = 0
[pid  7871] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7871] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7871] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7871] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7871] close(10)                   = -1 EBADF (Bad file descriptor)
[  238.773100][ T7872] BTRFS info (device loop0): 1 enospc errors during balance
[  238.780443][ T7872] BTRFS info (device loop0): balance: ended with status: -28
[pid  7871] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7871] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7871] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7871] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7871] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7871] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7871] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7871] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7871] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7871] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7871] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7871] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7871] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7871] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7871] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7871] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7871] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7871] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7871] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7871] exit_group(0 <unfinished ...>
[pid  7890] <... futex resumed>)        = ?
[pid  7872] <... futex resumed>)        = ?
[pid  7890] +++ exited with 0 +++
[pid  7872] +++ exited with 0 +++
[pid  7871] <... exit_group resumed>)   = ?
[pid  7871] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=420, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=35 /* 0.35 s */} ---
[pid  5073] umount2("./139", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./139", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./139/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./139/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./139/binderfs")    = 0
[pid  5073] umount2("./139/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./139/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./139/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./139/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./139/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./139/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./139")              = 0
[pid  5073] mkdir("./140", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7891 attached
 <unfinished ...>
[pid  7891] set_robust_list(0x5555570a96a0, 24 <unfinished ...>
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 423
[pid  7891] <... set_robust_list resumed>) = 0
[pid  7891] chdir("./140")              = 0
[pid  7891] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7891] setpgid(0, 0)               = 0
[pid  7891] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7891] write(3, "1000", 4)         = 4
[pid  7891] close(3)                    = 0
[pid  7891] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7891] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7891] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7891] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7891] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7891] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7892 attached
 <unfinished ...>
[pid  7892] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7891] <... clone3 resumed> => {parent_tid=[424]}, 88) = 424
[pid  7892] <... rseq resumed>)         = 0
[pid  7891] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7892] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7891] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7892] <... set_robust_list resumed>) = 0
[pid  7891] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7892] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7891] <... futex resumed>)        = 0
[pid  7892] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7891] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7892] memfd_create("syzkaller", 0) = 3
[pid  7892] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7892] 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) = 16777216
[pid  7892] munmap(0x7f877d82c000, 138412032) = 0
[pid  7892] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7892] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7892] close(3)                    = 0
[pid  7892] mkdir("./file0", 0777)      = 0
[  239.368838][ T7892] loop0: detected capacity change from 0 to 32768
[  239.382985][ T7892] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7892)
[  239.399626][ T7892] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  239.409021][ T7892] BTRFS info (device loop0): force clearing of disk cache
[  239.416169][ T7892] BTRFS info (device loop0): setting nodatasum
[  239.422348][ T7892] BTRFS info (device loop0): allowing degraded mounts
[  239.429151][ T7892] BTRFS info (device loop0): enabling disk space caching
[  239.436199][ T7892] BTRFS info (device loop0): disk space caching is enabled
[  239.458699][ T7892] BTRFS info (device loop0): enabling ssd optimizations
[  239.465857][ T7892] BTRFS info (device loop0): auto enabling async discard
[  239.473792][ T7892] BTRFS info (device loop0): rebuilding free space tree
[  239.485697][ T7892] BTRFS info (device loop0): disabling free space tree
[  239.492592][ T7892] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  239.502297][ T7892] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  7892] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7892] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7892] chdir("./file0")            = 0
[pid  7892] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7892] close(4)                    = 0
[pid  7892] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7891] <... futex resumed>)        = 0
[pid  7891] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7892] open("./file0", O_RDONLY <unfinished ...>
[pid  7891] <... futex resumed>)        = 0
[pid  7892] <... open resumed>)         = 4
[  239.515383][ T7892] BTRFS info (device loop0): checking UUID tree
[pid  7891] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7892] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7891] <... futex resumed>)        = 0
[pid  7891] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7892] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  7891] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7892] <... ioctl resumed>)        = 0
[pid  7892] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7891] <... futex resumed>)        = 0
[pid  7891] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7891] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7892] 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}} <unfinished ...>
[pid  7891] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  7891] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7891] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7891] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7891] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7891] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[425]}, 88) = 425
[pid  7891] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7891] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
./strace-static-x86_64: Process 7910 attached
[pid  7891] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7910] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  7910] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  7910] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7910] open("./file0", O_RDONLY)   = 5
[pid  7910] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7891] <... futex resumed>)        = 0
[  239.591646][ T7892] BTRFS info (device loop0): balance: start -d -m
[  239.601403][ T7892] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  239.631718][ T7892] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7910] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7891] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7910] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7910] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  7891] <... futex resumed>)        = 0
[pid  7891] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7910] <... ioctl resumed>)        = 0
[pid  7910] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  239.790288][ T7892] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  239.815482][ T7892] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  7910] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7892] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7892] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7892] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7891] close(3)                    = 0
[pid  7891] close(4)                    = 0
[pid  7891] close(5)                    = 0
[pid  7891] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7891] close(7)                    = -1 EBADF (Bad file descriptor)
[  239.835598][ T7892] BTRFS info (device loop0): balance: ended with status: 0
[pid  7891] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7891] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7891] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7891] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7891] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7891] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7891] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7891] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7891] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7891] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7891] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7891] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7891] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7891] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7891] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7891] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7891] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7891] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7891] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7891] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7891] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7891] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7891] exit_group(0 <unfinished ...>
[pid  7910] <... futex resumed>)        = ?
[pid  7910] +++ exited with 0 +++
[pid  7892] <... futex resumed>)        = ?
[pid  7891] <... exit_group resumed>)   = ?
[pid  7892] +++ exited with 0 +++
[pid  7891] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=423, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=39 /* 0.39 s */} ---
[pid  5073] umount2("./140", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./140", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./140/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./140/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./140/binderfs")    = 0
[pid  5073] umount2("./140/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./140/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./140/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./140/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./140/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./140/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./140")              = 0
[pid  5073] mkdir("./141", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7911 attached
, child_tidptr=0x5555570a9690) = 426
[pid  7911] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7911] chdir("./141")              = 0
[pid  7911] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7911] setpgid(0, 0)               = 0
[pid  7911] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7911] write(3, "1000", 4)         = 4
[pid  7911] close(3)                    = 0
[pid  7911] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7911] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7911] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7911] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7911] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7911] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7912 attached
 <unfinished ...>
[pid  7912] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  7911] <... clone3 resumed> => {parent_tid=[427]}, 88) = 427
[pid  7912] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7911] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7912] <... set_robust_list resumed>) = 0
[pid  7911] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7912] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7911] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7912] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7911] <... futex resumed>)        = 0
[pid  7912] memfd_create("syzkaller", 0 <unfinished ...>
[pid  7911] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7912] <... memfd_create resumed>) = 3
[pid  7912] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7912] 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) = 16777216
[pid  7912] munmap(0x7f877d82c000, 138412032) = 0
[pid  7912] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7912] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7912] close(3)                    = 0
[pid  7912] mkdir("./file0", 0777)      = 0
[  240.445549][ T7912] loop0: detected capacity change from 0 to 32768
[  240.460342][ T7912] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7912)
[  240.476791][ T7912] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  240.486052][ T7912] BTRFS info (device loop0): force clearing of disk cache
[  240.493152][ T7912] BTRFS info (device loop0): setting nodatasum
[  240.499359][ T7912] BTRFS info (device loop0): allowing degraded mounts
[  240.506148][ T7912] BTRFS info (device loop0): enabling disk space caching
[  240.513160][ T7912] BTRFS info (device loop0): disk space caching is enabled
[  240.534868][ T7912] BTRFS info (device loop0): enabling ssd optimizations
[  240.541825][ T7912] BTRFS info (device loop0): auto enabling async discard
[  240.549866][ T7912] BTRFS info (device loop0): rebuilding free space tree
[  240.561806][ T7912] BTRFS info (device loop0): disabling free space tree
[  240.568769][ T7912] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  240.578461][ T7912] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  7912] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7912] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7912] chdir("./file0")            = 0
[pid  7912] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7912] close(4)                    = 0
[pid  7912] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7911] <... futex resumed>)        = 0
[pid  7912] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7911] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7912] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7911] <... futex resumed>)        = 0
[pid  7912] open("./file0", O_RDONLY <unfinished ...>
[pid  7911] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7912] <... open resumed>)         = 4
[pid  7912] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7911] <... futex resumed>)        = 0
[pid  7912] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable)
[pid  7911] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7912] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  7911] <... futex resumed>)        = 0
[pid  7912] <... ioctl resumed>)        = 0
[pid  7911] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7912] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7912] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7911] <... futex resumed>)        = 0
[pid  7911] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7912] <... futex resumed>)        = 0
[  240.592638][ T7912] BTRFS info (device loop0): checking UUID tree
[pid  7911] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7912] 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}} <unfinished ...>
[pid  7911] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  7911] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7911] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7911] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7911] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7911] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[428]}, 88) = 428
[pid  7911] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
./strace-static-x86_64: Process 7930 attached
[pid  7911] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7930] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  7911] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7930] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  7930] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7930] open("./file0", O_RDONLY)   = 5
[pid  7930] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7911] <... futex resumed>)        = 0
[pid  7930] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7911] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7930] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7911] <... futex resumed>)        = 0
[pid  7930] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  240.642018][ T7912] BTRFS info (device loop0): balance: start -d -m
[  240.653086][ T7912] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  240.677724][ T7912] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7911] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7930] <... ioctl resumed>)        = 0
[pid  7930] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  240.843652][ T7912] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  240.868619][ T7912] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  7930] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7912] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7912] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7911] close(3 <unfinished ...>
[pid  7912] <... futex resumed>)        = 0
[pid  7911] <... close resumed>)        = 0
[pid  7912] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7911] close(4)                    = 0
[pid  7911] close(5)                    = 0
[pid  7911] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7911] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7911] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7911] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7911] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7911] close(11)                   = -1 EBADF (Bad file descriptor)
[  240.887864][ T7912] BTRFS info (device loop0): balance: ended with status: 0
[pid  7911] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7911] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7911] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7911] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7911] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7911] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7911] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7911] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7911] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7911] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7911] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7911] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7911] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7911] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7911] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7911] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7911] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7911] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7911] exit_group(0 <unfinished ...>
[pid  7930] <... futex resumed>)        = ?
[pid  7930] +++ exited with 0 +++
[pid  7912] <... futex resumed>)        = ?
[pid  7911] <... exit_group resumed>)   = ?
[pid  7912] +++ exited with 0 +++
[pid  7911] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=426, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=47 /* 0.47 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./141", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./141", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./141/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./141/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./141/binderfs")    = 0
[pid  5073] umount2("./141/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./141/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./141/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./141/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./141/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./141/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./141")              = 0
[pid  5073] mkdir("./142", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555570a9690) = 429
./strace-static-x86_64: Process 7931 attached
[pid  7931] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7931] chdir("./142")              = 0
[pid  7931] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7931] setpgid(0, 0)               = 0
[pid  7931] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7931] write(3, "1000", 4)         = 4
[pid  7931] close(3)                    = 0
[pid  7931] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7931] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7931] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7931] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7931] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7931] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7932 attached
 <unfinished ...>
[pid  7932] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  7932] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7931] <... clone3 resumed> => {parent_tid=[430]}, 88) = 430
[pid  7932] <... set_robust_list resumed>) = 0
[pid  7931] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7932] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7931] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7932] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7931] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7932] memfd_create("syzkaller", 0 <unfinished ...>
[pid  7931] <... futex resumed>)        = 0
[pid  7932] <... memfd_create resumed>) = 3
[pid  7931] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7932] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7932] 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) = 16777216
[pid  7932] munmap(0x7f877d82c000, 138412032) = 0
[pid  7932] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7932] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7932] close(3)                    = 0
[pid  7932] mkdir("./file0", 0777)      = 0
[  241.486444][ T7932] loop0: detected capacity change from 0 to 32768
[  241.502941][ T7932] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7932)
[  241.518972][ T7932] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  241.528337][ T7932] BTRFS info (device loop0): force clearing of disk cache
[  241.535480][ T7932] BTRFS info (device loop0): setting nodatasum
[  241.541626][ T7932] BTRFS info (device loop0): allowing degraded mounts
[  241.548444][ T7932] BTRFS info (device loop0): enabling disk space caching
[  241.555497][ T7932] BTRFS info (device loop0): disk space caching is enabled
[  241.577500][ T7932] BTRFS info (device loop0): enabling ssd optimizations
[  241.584502][ T7932] BTRFS info (device loop0): auto enabling async discard
[  241.592395][ T7932] BTRFS info (device loop0): rebuilding free space tree
[  241.604585][ T7932] BTRFS info (device loop0): disabling free space tree
[  241.611488][ T7932] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  241.621193][ T7932] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  7932] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7932] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7932] chdir("./file0")            = 0
[pid  7932] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7932] close(4)                    = 0
[pid  7932] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7931] <... futex resumed>)        = 0
[pid  7932] <... futex resumed>)        = 1
[pid  7931] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7932] open("./file0", O_RDONLY <unfinished ...>
[pid  7931] <... futex resumed>)        = 0
[pid  7931] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7932] <... open resumed>)         = 4
[pid  7932] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7931] <... futex resumed>)        = 0
[pid  7932] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  7931] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7932] <... ioctl resumed>)        = 0
[pid  7931] <... futex resumed>)        = 0
[  241.634974][ T7932] BTRFS info (device loop0): checking UUID tree
[pid  7931] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7932] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7931] <... futex resumed>)        = 0
[pid  7932] <... futex resumed>)        = 1
[pid  7931] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7932] 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}} <unfinished ...>
[pid  7931] <... futex resumed>)        = 0
[pid  7931] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7931] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7931] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[  241.682296][ T7932] BTRFS info (device loop0): balance: start -d -m
[  241.690603][ T7932] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  241.708587][ T7932] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7931] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7931] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7931] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 7949 attached
 <unfinished ...>
[pid  7949] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  7949] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  7949] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7931] <... clone3 resumed> => {parent_tid=[431]}, 88) = 431
[pid  7949] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7931] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7949] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7931] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7931] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7949] <... futex resumed>)        = 0
[pid  7931] <... futex resumed>)        = 1
[pid  7949] open("./file0", O_RDONLY <unfinished ...>
[pid  7931] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7949] <... open resumed>)         = 5
[pid  7949] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7931] <... futex resumed>)        = 0
[pid  7949] <... futex resumed>)        = 1
[pid  7931] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7949] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  241.741149][ T7932] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  241.768338][ T7932] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  7931] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7949] <... ioctl resumed>)        = 0
[pid  7949] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7932] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7949] <... futex resumed>)        = 0
[pid  7932] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7931] close(3 <unfinished ...>
[pid  7949] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7932] <... futex resumed>)        = 0
[pid  7931] <... close resumed>)        = 0
[pid  7932] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7931] close(4)                    = 0
[pid  7931] close(5)                    = 0
[pid  7931] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7931] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7931] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7931] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7931] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7931] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7931] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7931] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7931] close(14)                   = -1 EBADF (Bad file descriptor)
[  241.855894][ T7932] BTRFS info (device loop0): balance: ended with status: 0
[pid  7931] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7931] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7931] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7931] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7931] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7931] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7931] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7931] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7931] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7931] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7931] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7931] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7931] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7931] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7931] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7931] exit_group(0 <unfinished ...>
[pid  7932] <... futex resumed>)        = ?
[pid  7949] <... futex resumed>)        = ?
[pid  7932] +++ exited with 0 +++
[pid  7931] <... exit_group resumed>)   = ?
[pid  7949] +++ exited with 0 +++
[pid  7931] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=429, si_uid=0, si_status=0, si_utime=0, si_stime=40 /* 0.40 s */} ---
[pid  5073] umount2("./142", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./142", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./142/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./142/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./142/binderfs")    = 0
[pid  5073] umount2("./142/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./142/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./142/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./142/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./142/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./142/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./142")              = 0
[pid  5073] mkdir("./143", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7950 attached
, child_tidptr=0x5555570a9690) = 432
[pid  7950] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7950] chdir("./143")              = 0
[pid  7950] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7950] setpgid(0, 0)               = 0
[pid  7950] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7950] write(3, "1000", 4)         = 4
[pid  7950] close(3)                    = 0
[pid  7950] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7950] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7950] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7950] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7950] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7950] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7951 attached
 <unfinished ...>
[pid  7951] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7950] <... clone3 resumed> => {parent_tid=[433]}, 88) = 433
[pid  7951] <... rseq resumed>)         = 0
[pid  7950] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7951] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7950] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7951] <... set_robust_list resumed>) = 0
[pid  7950] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7951] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7950] <... futex resumed>)        = 0
[pid  7950] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7951] memfd_create("syzkaller", 0) = 3
[pid  7951] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7951] 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) = 16777216
[pid  7951] munmap(0x7f877d82c000, 138412032) = 0
[pid  7951] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7951] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7951] close(3)                    = 0
[pid  7951] mkdir("./file0", 0777)      = 0
[  242.479981][ T7951] loop0: detected capacity change from 0 to 32768
[  242.494913][ T7951] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7951)
[  242.510545][ T7951] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  242.519806][ T7951] BTRFS info (device loop0): force clearing of disk cache
[  242.526966][ T7951] BTRFS info (device loop0): setting nodatasum
[  242.533128][ T7951] BTRFS info (device loop0): allowing degraded mounts
[  242.539928][ T7951] BTRFS info (device loop0): enabling disk space caching
[  242.546979][ T7951] BTRFS info (device loop0): disk space caching is enabled
[  242.568744][ T7951] BTRFS info (device loop0): enabling ssd optimizations
[  242.575822][ T7951] BTRFS info (device loop0): auto enabling async discard
[  242.584446][ T7951] BTRFS info (device loop0): rebuilding free space tree
[  242.597011][ T7951] BTRFS info (device loop0): disabling free space tree
[  242.603977][ T7951] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  242.613618][ T7951] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  7951] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7951] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7951] chdir("./file0")            = 0
[pid  7951] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7951] close(4)                    = 0
[pid  7951] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[  242.626811][ T7951] BTRFS info (device loop0): checking UUID tree
[pid  7951] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7950] <... futex resumed>)        = 0
[pid  7950] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7950] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7951] <... futex resumed>)        = 0
[pid  7951] open("./file0", O_RDONLY)   = 4
[pid  7951] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7950] <... futex resumed>)        = 0
[pid  7951] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7950] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7951] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7950] <... futex resumed>)        = 0
[pid  7951] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  7950] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7951] <... ioctl resumed>)        = 0
[pid  7951] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7950] <... futex resumed>)        = 0
[pid  7951] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7950] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7951] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7950] <... futex resumed>)        = 0
[pid  7951] 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}} <unfinished ...>
[  242.704866][ T7951] BTRFS info (device loop0): balance: start -d -m
[  242.714616][ T7951] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  7950] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7950] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7950] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7950] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7950] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7950] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[434]}, 88) = 434
[pid  7950] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7950] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 7969 attached
) = 0
[pid  7969] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7950] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7969] <... rseq resumed>)         = 0
[pid  7969] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  7969] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7969] open("./file0", O_RDONLY)   = 5
[pid  7969] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7950] <... futex resumed>)        = 0
[pid  7969] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7950] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7969] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7950] <... futex resumed>)        = 0
[pid  7969] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  242.747955][ T7951] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7950] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7969] <... ioctl resumed>)        = 0
[pid  7969] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7969] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7951] <... ioctl resumed>)        = -1 ENOSPC (No space left on device)
[pid  7951] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7950] close(3)                    = 0
[pid  7950] close(4 <unfinished ...>
[pid  7951] <... futex resumed>)        = 0
[pid  7951] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7950] <... close resumed>)        = 0
[pid  7950] close(5)                    = 0
[pid  7950] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7950] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7950] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7950] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7950] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7950] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7950] close(12)                   = -1 EBADF (Bad file descriptor)
[  242.890962][ T7951] BTRFS info (device loop0): 1 enospc errors during balance
[  242.899171][ T7951] BTRFS info (device loop0): balance: ended with status: -28
[pid  7950] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7950] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7950] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7950] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7950] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7950] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7950] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7950] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7950] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7950] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7950] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7950] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7950] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7950] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7950] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7950] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7950] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7950] exit_group(0 <unfinished ...>
[pid  7969] <... futex resumed>)        = ?
[pid  7951] <... futex resumed>)        = ?
[pid  7950] <... exit_group resumed>)   = ?
[pid  7969] +++ exited with 0 +++
[pid  7951] +++ exited with 0 +++
[pid  7950] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=432, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=31 /* 0.31 s */} ---
[pid  5073] umount2("./143", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./143", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./143/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./143/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./143/binderfs")    = 0
[pid  5073] umount2("./143/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./143/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./143/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./143/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./143/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./143/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./143")              = 0
[pid  5073] mkdir("./144", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7970 attached
, child_tidptr=0x5555570a9690) = 435
[pid  7970] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7970] chdir("./144")              = 0
[pid  7970] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7970] setpgid(0, 0)               = 0
[pid  7970] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7970] write(3, "1000", 4)         = 4
[pid  7970] close(3)                    = 0
[pid  7970] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7970] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7970] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7970] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7970] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7970] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7971 attached
 <unfinished ...>
[pid  7971] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  7970] <... clone3 resumed> => {parent_tid=[436]}, 88) = 436
[pid  7971] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7970] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7971] <... set_robust_list resumed>) = 0
[pid  7970] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7971] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7970] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7971] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7970] <... futex resumed>)        = 0
[pid  7970] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7971] memfd_create("syzkaller", 0) = 3
[pid  7971] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7971] 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) = 16777216
[pid  7971] munmap(0x7f877d82c000, 138412032) = 0
[pid  7971] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7971] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7971] close(3)                    = 0
[pid  7971] mkdir("./file0", 0777)      = 0
[  243.557430][ T7971] loop0: detected capacity change from 0 to 32768
[  243.577158][ T7971] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7971)
[  243.592929][ T7971] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  243.602213][ T7971] BTRFS info (device loop0): force clearing of disk cache
[  243.609378][ T7971] BTRFS info (device loop0): setting nodatasum
[  243.615582][ T7971] BTRFS info (device loop0): allowing degraded mounts
[  243.622348][ T7971] BTRFS info (device loop0): enabling disk space caching
[  243.629438][ T7971] BTRFS info (device loop0): disk space caching is enabled
[  243.650461][ T7971] BTRFS info (device loop0): enabling ssd optimizations
[  243.657946][ T7971] BTRFS info (device loop0): auto enabling async discard
[  243.666181][ T7971] BTRFS info (device loop0): rebuilding free space tree
[  243.678786][ T7971] BTRFS info (device loop0): disabling free space tree
[  243.686011][ T7971] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  243.696072][ T7971] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  7971] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7971] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7971] chdir("./file0")            = 0
[pid  7971] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7971] close(4)                    = 0
[pid  7971] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7971] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7970] <... futex resumed>)        = 0
[pid  7970] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7970] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7971] <... futex resumed>)        = 0
[pid  7971] open("./file0", O_RDONLY)   = 4
[pid  7971] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7970] <... futex resumed>)        = 0
[pid  7971] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  7970] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7971] <... ioctl resumed>)        = 0
[pid  7970] <... futex resumed>)        = 0
[  243.710009][ T7971] BTRFS info (device loop0): checking UUID tree
[pid  7970] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7971] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7970] <... futex resumed>)        = 0
[pid  7971] 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}} <unfinished ...>
[pid  7970] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  243.790975][ T7971] BTRFS info (device loop0): balance: start -d -m
[  243.799959][ T7971] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  7970] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7970] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7970] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7970] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7970] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7970] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 7989 attached
 => {parent_tid=[437]}, 88) = 437
[pid  7989] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  7970] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7989] <... rseq resumed>)         = 0
[pid  7970] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7989] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  7970] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7989] <... set_robust_list resumed>) = 0
[pid  7989] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7970] <... futex resumed>)        = 0
[pid  7989] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7970] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7989] open("./file0", O_RDONLY)   = 5
[pid  7989] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7970] <... futex resumed>)        = 0
[pid  7989] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  7970] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  243.832030][ T7971] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7970] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7989] <... ioctl resumed>)        = 0
[pid  7989] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  243.974949][ T7971] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  243.998711][ T7971] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  244.018203][ T7971] BTRFS info (device loop0): balance: ended with status: 0
[pid  7989] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7971] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7971] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7970] close(3 <unfinished ...>
[pid  7971] <... futex resumed>)        = 0
[pid  7970] <... close resumed>)        = 0
[pid  7971] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7970] close(4)                    = 0
[pid  7970] close(5)                    = 0
[pid  7970] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7970] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  7970] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7970] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7970] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7970] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7970] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7970] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7970] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7970] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7970] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7970] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7970] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7970] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7970] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7970] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7970] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7970] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7970] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7970] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7970] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7970] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7970] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7970] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7970] exit_group(0 <unfinished ...>
[pid  7989] <... futex resumed>)        = ?
[pid  7971] <... futex resumed>)        = ?
[pid  7970] <... exit_group resumed>)   = ?
[pid  7989] +++ exited with 0 +++
[pid  7971] +++ exited with 0 +++
[pid  7970] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=435, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=39 /* 0.39 s */} ---
[pid  5073] umount2("./144", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./144", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./144/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./144/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./144/binderfs")    = 0
[pid  5073] umount2("./144/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./144/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./144/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./144/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./144/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./144/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./144")              = 0
[pid  5073] mkdir("./145", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 7990 attached
, child_tidptr=0x5555570a9690) = 438
[pid  7990] set_robust_list(0x5555570a96a0, 24) = 0
[pid  7990] chdir("./145")              = 0
[pid  7990] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  7990] setpgid(0, 0)               = 0
[pid  7990] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  7990] write(3, "1000", 4)         = 4
[pid  7990] close(3)                    = 0
[pid  7990] symlink("/dev/binderfs", "./binderfs") = 0
[pid  7990] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7990] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  7990] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7990] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7990] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 7991 attached
 <unfinished ...>
[pid  7991] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  7991] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  7990] <... clone3 resumed> => {parent_tid=[439]}, 88) = 439
[pid  7991] <... set_robust_list resumed>) = 0
[pid  7990] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7991] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  7990] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7991] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  7990] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7991] memfd_create("syzkaller", 0 <unfinished ...>
[pid  7990] <... futex resumed>)        = 0
[pid  7990] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  7991] <... memfd_create resumed>) = 3
[pid  7991] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  7991] 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) = 16777216
[pid  7991] munmap(0x7f877d82c000, 138412032) = 0
[pid  7991] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  7991] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  7991] close(3)                    = 0
[pid  7991] mkdir("./file0", 0777)      = 0
[  244.631109][ T7991] loop0: detected capacity change from 0 to 32768
[  244.646300][ T7991] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (7991)
[  244.661171][ T7991] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  244.670484][ T7991] BTRFS info (device loop0): force clearing of disk cache
[  244.677652][ T7991] BTRFS info (device loop0): setting nodatasum
[  244.683820][ T7991] BTRFS info (device loop0): allowing degraded mounts
[  244.690638][ T7991] BTRFS info (device loop0): enabling disk space caching
[  244.697715][ T7991] BTRFS info (device loop0): disk space caching is enabled
[  244.719366][ T7991] BTRFS info (device loop0): enabling ssd optimizations
[  244.726543][ T7991] BTRFS info (device loop0): auto enabling async discard
[  244.734740][ T7991] BTRFS info (device loop0): rebuilding free space tree
[  244.746895][ T7991] BTRFS info (device loop0): disabling free space tree
[  244.754137][ T7991] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  244.763786][ T7991] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  7991] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  7991] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  7991] chdir("./file0")            = 0
[pid  7991] ioctl(4, LOOP_CLR_FD)       = 0
[pid  7991] close(4)                    = 0
[pid  7991] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7990] <... futex resumed>)        = 0
[pid  7991] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7990] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7991] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7990] <... futex resumed>)        = 0
[pid  7991] open("./file0", O_RDONLY <unfinished ...>
[pid  7990] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7991] <... open resumed>)         = 4
[  244.777491][ T7991] BTRFS info (device loop0): checking UUID tree
[pid  7991] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7991] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7990] <... futex resumed>)        = 0
[pid  7990] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  7991] <... futex resumed>)        = 0
[pid  7990] <... futex resumed>)        = 1
[pid  7991] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  7990] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  7991] <... ioctl resumed>)        = 0
[pid  7991] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7990] <... futex resumed>)        = 0
[pid  7991] 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}} <unfinished ...>
[pid  7990] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  244.841118][ T7991] BTRFS info (device loop0): balance: start -d -m
[  244.851581][ T7991] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  7990] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  7990] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7990] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  7990] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  7990] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  7990] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[440]}, 88) = 440
[pid  7990] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  7990] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7990] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 8009 attached
 <unfinished ...>
[pid  8009] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  8009] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  8009] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  8009] open("./file0", O_RDONLY)   = 5
[pid  8009] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  7990] <... futex resumed>)        = 0
[pid  8009] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7990] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8009] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  7990] <... futex resumed>)        = 0
[pid  8009] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  244.882103][ T7991] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  7990] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  8009] <... ioctl resumed>)        = 0
[pid  8009] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8009] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7991] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  7991] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  7991] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  7990] close(3)                    = 0
[pid  7990] close(4)                    = 0
[pid  7990] close(5)                    = 0
[pid  7990] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  7990] close(7)                    = -1 EBADF (Bad file descriptor)
[  245.047957][ T7991] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  245.071874][ T7991] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  245.090727][ T7991] BTRFS info (device loop0): balance: ended with status: 0
[pid  7990] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  7990] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  7990] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  7990] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  7990] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  7990] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  7990] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  7990] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  7990] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  7990] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  7990] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  7990] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  7990] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  7990] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  7990] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  7990] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  7990] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  7990] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  7990] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  7990] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  7990] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  7990] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  7990] exit_group(0)               = ?
[pid  8009] <... futex resumed>)        = ?
[pid  7991] <... futex resumed>)        = ?
[pid  7991] +++ exited with 0 +++
[pid  8009] +++ exited with 0 +++
[pid  7990] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=438, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=41 /* 0.41 s */} ---
[pid  5073] umount2("./145", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./145", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./145/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./145/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./145/binderfs")    = 0
[pid  5073] umount2("./145/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./145/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./145/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./145/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./145/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./145/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./145")              = 0
[pid  5073] mkdir("./146", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 8010 attached
 <unfinished ...>
[pid  8010] set_robust_list(0x5555570a96a0, 24 <unfinished ...>
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 441
[pid  8010] <... set_robust_list resumed>) = 0
[pid  8010] chdir("./146")              = 0
[pid  8010] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  8010] setpgid(0, 0)               = 0
[pid  8010] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  8010] write(3, "1000", 4)         = 4
[pid  8010] close(3)                    = 0
[pid  8010] symlink("/dev/binderfs", "./binderfs") = 0
[pid  8010] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8010] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  8010] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  8010] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  8010] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 8011 attached
 <unfinished ...>
[pid  8011] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  8010] <... clone3 resumed> => {parent_tid=[442]}, 88) = 442
[pid  8011] <... rseq resumed>)         = 0
[pid  8010] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  8011] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  8010] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  8011] <... set_robust_list resumed>) = 0
[pid  8010] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8011] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  8010] <... futex resumed>)        = 0
[pid  8011] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  8010] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  8011] memfd_create("syzkaller", 0) = 3
[pid  8011] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  8011] 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) = 16777216
[pid  8011] munmap(0x7f877d82c000, 138412032) = 0
[pid  8011] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  8011] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  8011] close(3)                    = 0
[pid  8011] mkdir("./file0", 0777)      = 0
[  245.791583][ T8011] loop0: detected capacity change from 0 to 32768
[  245.815692][ T8011] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (8011)
[  245.831990][ T8011] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  245.841317][ T8011] BTRFS info (device loop0): force clearing of disk cache
[  245.848494][ T8011] BTRFS info (device loop0): setting nodatasum
[  245.854709][ T8011] BTRFS info (device loop0): allowing degraded mounts
[  245.861488][ T8011] BTRFS info (device loop0): enabling disk space caching
[  245.868776][ T8011] BTRFS info (device loop0): disk space caching is enabled
[  245.890427][ T8011] BTRFS info (device loop0): enabling ssd optimizations
[  245.897426][ T8011] BTRFS info (device loop0): auto enabling async discard
[  245.905541][ T8011] BTRFS info (device loop0): rebuilding free space tree
[  245.917771][ T8011] BTRFS info (device loop0): disabling free space tree
[  245.924704][ T8011] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  8011] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  8011] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  8011] chdir("./file0")            = 0
[pid  8011] ioctl(4, LOOP_CLR_FD)       = 0
[pid  8011] close(4)                    = 0
[pid  8011] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8011] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8010] <... futex resumed>)        = 0
[pid  8010] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8011] <... futex resumed>)        = 0
[pid  8010] <... futex resumed>)        = 1
[pid  8011] open("./file0", O_RDONLY <unfinished ...>
[pid  8010] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  8011] <... open resumed>)         = 4
[  245.934565][ T8011] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  245.947777][ T8011] BTRFS info (device loop0): checking UUID tree
[pid  8011] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8010] <... futex resumed>)        = 0
[pid  8011] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8010] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8011] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  8010] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  8011] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  8011] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8010] <... futex resumed>)        = 0
[pid  8010] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8011] 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}} <unfinished ...>
[  246.035014][ T8011] BTRFS info (device loop0): balance: start -d -m
[  246.042879][ T8011] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  8010] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  8010] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8010] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  8010] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  8010] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  8010] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[443]}, 88) = 443
[pid  8010] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  8010] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8010] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 8029 attached
 <unfinished ...>
[pid  8029] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  8029] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  8029] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  8029] open("./file0", O_RDONLY)   = 5
[pid  8029] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8010] <... futex resumed>)        = 0
[pid  8010] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8010] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[  246.076713][ T8011] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  8029] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  8010] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  8010] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  8029] <... ioctl resumed>)        = 0
[pid  8029] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8029] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8011] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  8011] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8011] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8010] close(3)                    = 0
[pid  8010] close(4)                    = 0
[pid  8010] close(5)                    = 0
[pid  8010] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  8010] close(7)                    = -1 EBADF (Bad file descriptor)
[  246.229596][ T8011] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  246.252932][ T8011] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  246.272323][ T8011] BTRFS info (device loop0): balance: ended with status: 0
[pid  8010] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  8010] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  8010] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  8010] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  8010] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  8010] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  8010] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  8010] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  8010] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  8010] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  8010] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  8010] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  8010] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  8010] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  8010] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  8010] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  8010] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  8010] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  8010] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  8010] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  8010] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  8010] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  8010] exit_group(0 <unfinished ...>
[pid  8011] <... futex resumed>)        = ?
[pid  8011] +++ exited with 0 +++
[pid  8029] <... futex resumed>)        = ?
[pid  8010] <... exit_group resumed>)   = ?
[pid  8029] +++ exited with 0 +++
[pid  8010] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=441, si_uid=0, si_status=0, si_utime=0, si_stime=41 /* 0.41 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./146", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./146", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./146/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./146/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./146/binderfs")    = 0
[pid  5073] umount2("./146/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./146/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./146/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./146/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./146/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./146/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./146")              = 0
[pid  5073] mkdir("./147", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 8030 attached
 <unfinished ...>
[pid  8030] set_robust_list(0x5555570a96a0, 24 <unfinished ...>
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 444
[pid  8030] <... set_robust_list resumed>) = 0
[pid  8030] chdir("./147")              = 0
[pid  8030] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  8030] setpgid(0, 0)               = 0
[pid  8030] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  8030] write(3, "1000", 4)         = 4
[pid  8030] close(3)                    = 0
[pid  8030] symlink("/dev/binderfs", "./binderfs") = 0
[pid  8030] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8030] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  8030] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  8030] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  8030] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 8031 attached
 <unfinished ...>
[pid  8031] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  8030] <... clone3 resumed> => {parent_tid=[445]}, 88) = 445
[pid  8031] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  8030] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  8031] <... set_robust_list resumed>) = 0
[pid  8031] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  8030] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  8031] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  8030] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8031] memfd_create("syzkaller", 0 <unfinished ...>
[pid  8030] <... futex resumed>)        = 0
[pid  8030] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  8031] <... memfd_create resumed>) = 3
[pid  8031] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  8031] 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) = 16777216
[pid  8031] munmap(0x7f877d82c000, 138412032) = 0
[pid  8031] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  8031] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  8031] close(3)                    = 0
[pid  8031] mkdir("./file0", 0777)      = 0
[  246.835069][ T8031] loop0: detected capacity change from 0 to 32768
[  246.845822][ T8031] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (8031)
[  246.861401][ T8031] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  246.870683][ T8031] BTRFS info (device loop0): force clearing of disk cache
[  246.877836][ T8031] BTRFS info (device loop0): setting nodatasum
[  246.884109][ T8031] BTRFS info (device loop0): allowing degraded mounts
[  246.890892][ T8031] BTRFS info (device loop0): enabling disk space caching
[  246.898038][ T8031] BTRFS info (device loop0): disk space caching is enabled
[  246.920280][ T8031] BTRFS info (device loop0): enabling ssd optimizations
[  246.927382][ T8031] BTRFS info (device loop0): auto enabling async discard
[pid  8031] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  8031] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  8031] chdir("./file0")            = 0
[pid  8031] ioctl(4, LOOP_CLR_FD)       = 0
[pid  8031] close(4)                    = 0
[pid  8031] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8030] <... futex resumed>)        = 0
[pid  8031] <... futex resumed>)        = 1
[pid  8030] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8031] open("./file0", O_RDONLY)   = 4
[pid  8030] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  8031] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8030] <... futex resumed>)        = 0
[pid  8030] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8031] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  8030] <... futex resumed>)        = 0
[pid  8031] <... ioctl resumed>)        = 0
[pid  8030] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  8031] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8030] <... futex resumed>)        = 0
[pid  8030] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8031] 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}} <unfinished ...>
[pid  8030] <... futex resumed>)        = 0
[  246.935869][ T8031] BTRFS info (device loop0): rebuilding free space tree
[  246.948430][ T8031] BTRFS info (device loop0): disabling free space tree
[  246.955368][ T8031] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  246.965054][ T8031] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  246.978318][ T8031] BTRFS info (device loop0): checking UUID tree
[pid  8030] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  8030] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8030] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[  247.019398][ T8031] BTRFS info (device loop0): balance: start -d -m
[  247.028473][ T8031] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  247.054625][ T8031] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  8030] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  8030] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  8030] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 8049 attached
 => {parent_tid=[446]}, 88) = 446
[pid  8049] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  8030] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  8049] <... rseq resumed>)         = 0
[pid  8030] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  8049] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  8030] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8049] <... set_robust_list resumed>) = 0
[pid  8030] <... futex resumed>)        = 0
[pid  8049] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  8030] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  8049] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  8049] open("./file0", O_RDONLY)   = 5
[pid  8049] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8030] <... futex resumed>)        = 0
[pid  8030] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8049] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  8030] <... futex resumed>)        = 0
[  247.105933][ T8031] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  8030] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[  247.197180][ T8031] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  8049] <... ioctl resumed>)        = 0
[pid  8049] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8049] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8031] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  8031] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8031] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8030] close(3)                    = 0
[pid  8030] close(4)                    = 0
[pid  8030] close(5)                    = 0
[pid  8030] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  8030] close(7)                    = -1 EBADF (Bad file descriptor)
[  247.265769][ T8031] BTRFS info (device loop0): balance: ended with status: 0
[pid  8030] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  8030] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  8030] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  8030] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  8030] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  8030] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  8030] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  8030] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  8030] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  8030] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  8030] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  8030] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  8030] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  8030] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  8030] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  8030] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  8030] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  8030] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  8030] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  8030] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  8030] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  8030] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  8030] exit_group(0)               = ?
[pid  8031] <... futex resumed>)        = ?
[pid  8031] +++ exited with 0 +++
[pid  8049] <... futex resumed>)        = ?
[pid  8049] +++ exited with 0 +++
[pid  8030] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=444, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=45 /* 0.45 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./147", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./147", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./147/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./147/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./147/binderfs")    = 0
[pid  5073] umount2("./147/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./147/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./147/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./147/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./147/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./147/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./147")              = 0
[pid  5073] mkdir("./148", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 8050 attached
, child_tidptr=0x5555570a9690) = 447
[pid  8050] set_robust_list(0x5555570a96a0, 24) = 0
[pid  8050] chdir("./148")              = 0
[pid  8050] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  8050] setpgid(0, 0)               = 0
[pid  8050] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  8050] write(3, "1000", 4)         = 4
[pid  8050] close(3)                    = 0
[pid  8050] symlink("/dev/binderfs", "./binderfs") = 0
[pid  8050] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8050] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  8050] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  8050] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  8050] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 8051 attached
 <unfinished ...>
[pid  8051] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  8051] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  8050] <... clone3 resumed> => {parent_tid=[448]}, 88) = 448
[pid  8051] <... set_robust_list resumed>) = 0
[pid  8051] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  8050] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  8051] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  8050] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  8051] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8050] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8051] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  8050] <... futex resumed>)        = 0
[pid  8051] memfd_create("syzkaller", 0 <unfinished ...>
[pid  8050] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  8051] <... memfd_create resumed>) = 3
[pid  8051] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  8051] 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) = 16777216
[pid  8051] munmap(0x7f877d82c000, 138412032) = 0
[pid  8051] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  8051] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  8051] close(3)                    = 0
[pid  8051] mkdir("./file0", 0777)      = 0
[  247.915321][ T8051] loop0: detected capacity change from 0 to 32768
[  247.930352][ T8051] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (8051)
[  247.946994][ T8051] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  247.956257][ T8051] BTRFS info (device loop0): force clearing of disk cache
[  247.963358][ T8051] BTRFS info (device loop0): setting nodatasum
[  247.969541][ T8051] BTRFS info (device loop0): allowing degraded mounts
[  247.976336][ T8051] BTRFS info (device loop0): enabling disk space caching
[  247.983347][ T8051] BTRFS info (device loop0): disk space caching is enabled
[  248.006215][ T8051] BTRFS info (device loop0): enabling ssd optimizations
[  248.013173][ T8051] BTRFS info (device loop0): auto enabling async discard
[  248.021214][ T8051] BTRFS info (device loop0): rebuilding free space tree
[  248.033362][ T8051] BTRFS info (device loop0): disabling free space tree
[  248.040311][ T8051] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  8051] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  8051] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  8051] chdir("./file0")            = 0
[pid  8051] ioctl(4, LOOP_CLR_FD)       = 0
[pid  8051] close(4)                    = 0
[pid  8051] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8051] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8050] <... futex resumed>)        = 0
[pid  8050] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8051] <... futex resumed>)        = 0
[pid  8050] <... futex resumed>)        = 1
[pid  8050] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[  248.050002][ T8051] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  248.063520][ T8051] BTRFS info (device loop0): checking UUID tree
[pid  8051] open("./file0", O_RDONLY)   = 4
[pid  8051] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8051] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8050] <... futex resumed>)        = 0
[pid  8050] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8051] <... futex resumed>)        = 0
[pid  8050] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  8051] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840) = 0
[pid  8051] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8050] <... futex resumed>)        = 0
[pid  8051] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8050] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8051] <... futex resumed>)        = 0
[pid  8051] 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}} <unfinished ...>
[pid  8050] <... futex resumed>)        = 1
[pid  8050] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  8050] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8050] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  8050] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  8050] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  8050] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[449]}, 88) = 449
[pid  8050] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  8050] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8050] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 8069 attached
 <unfinished ...>
[pid  8069] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  8069] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  8069] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  8069] open("./file0", O_RDONLY)   = 5
[pid  8069] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8069] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8050] <... futex resumed>)        = 0
[pid  8050] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8069] <... futex resumed>)        = 0
[pid  8050] <... futex resumed>)        = 1
[pid  8069] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  248.144409][ T8051] BTRFS info (device loop0): balance: start -d -m
[  248.153272][ T8051] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  248.183548][ T8051] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  8050] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  8069] <... ioctl resumed>)        = 0
[pid  8069] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  248.342369][ T8051] BTRFS info (device loop0): found 8 extents, stage: move data extents
[  248.367602][ T8051] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  8069] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8051] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  8051] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8051] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8050] close(3)                    = 0
[pid  8050] close(4)                    = 0
[pid  8050] close(5)                    = 0
[pid  8050] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  8050] close(7)                    = -1 EBADF (Bad file descriptor)
[  248.386973][ T8051] BTRFS info (device loop0): balance: ended with status: 0
[pid  8050] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  8050] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  8050] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  8050] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  8050] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  8050] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  8050] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  8050] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  8050] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  8050] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  8050] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  8050] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  8050] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  8050] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  8050] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  8050] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  8050] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  8050] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  8050] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  8050] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  8050] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  8050] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  8050] exit_group(0)               = ?
[pid  8069] <... futex resumed>)        = ?
[pid  8051] <... futex resumed>)        = ?
[pid  8069] +++ exited with 0 +++
[pid  8051] +++ exited with 0 +++
[pid  8050] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=447, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=40 /* 0.40 s */} ---
[pid  5073] umount2("./148", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./148", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./148/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./148/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./148/binderfs")    = 0
[pid  5073] umount2("./148/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./148/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./148/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./148/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./148/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./148/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./148")              = 0
[pid  5073] mkdir("./149", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 8070 attached
, child_tidptr=0x5555570a9690) = 450
[pid  8070] set_robust_list(0x5555570a96a0, 24) = 0
[pid  8070] chdir("./149")              = 0
[pid  8070] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  8070] setpgid(0, 0)               = 0
[pid  8070] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  8070] write(3, "1000", 4)         = 4
[pid  8070] close(3)                    = 0
[pid  8070] symlink("/dev/binderfs", "./binderfs") = 0
[pid  8070] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8070] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  8070] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  8070] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  8070] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 8071 attached
 <unfinished ...>
[pid  8071] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  8071] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  8070] <... clone3 resumed> => {parent_tid=[451]}, 88) = 451
[pid  8071] <... set_robust_list resumed>) = 0
[pid  8070] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  8071] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  8070] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  8071] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  8070] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8071] memfd_create("syzkaller", 0 <unfinished ...>
[pid  8070] <... futex resumed>)        = 0
[pid  8070] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  8071] <... memfd_create resumed>) = 3
[pid  8071] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  8071] 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) = 16777216
[pid  8071] munmap(0x7f877d82c000, 138412032) = 0
[pid  8071] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  8071] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  8071] close(3)                    = 0
[pid  8071] mkdir("./file0", 0777)      = 0
[  249.083587][ T8071] loop0: detected capacity change from 0 to 32768
[  249.110223][ T8071] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (8071)
[  249.126242][ T8071] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  249.135564][ T8071] BTRFS info (device loop0): force clearing of disk cache
[  249.142689][ T8071] BTRFS info (device loop0): setting nodatasum
[  249.148904][ T8071] BTRFS info (device loop0): allowing degraded mounts
[  249.155746][ T8071] BTRFS info (device loop0): enabling disk space caching
[  249.162756][ T8071] BTRFS info (device loop0): disk space caching is enabled
[  249.184002][ T8071] BTRFS info (device loop0): enabling ssd optimizations
[  249.190962][ T8071] BTRFS info (device loop0): auto enabling async discard
[  249.199005][ T8071] BTRFS info (device loop0): rebuilding free space tree
[  249.210700][ T8071] BTRFS info (device loop0): disabling free space tree
[  249.217706][ T8071] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  8071] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  8071] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  8071] chdir("./file0")            = 0
[pid  8071] ioctl(4, LOOP_CLR_FD)       = 0
[pid  8071] close(4)                    = 0
[pid  8071] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8071] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8070] <... futex resumed>)        = 0
[pid  8070] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8070] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  8071] <... futex resumed>)        = 0
[pid  8071] open("./file0", O_RDONLY)   = 4
[pid  8071] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8071] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8070] <... futex resumed>)        = 0
[pid  8071] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  8070] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8071] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  8070] <... futex resumed>)        = 0
[pid  8071] <... ioctl resumed>)        = 0
[pid  8070] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  8071] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8070] <... futex resumed>)        = 0
[pid  8070] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8071] 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}} <unfinished ...>
[pid  8070] <... futex resumed>)        = 0
[  249.227562][ T8071] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  249.241105][ T8071] BTRFS info (device loop0): checking UUID tree
[pid  8070] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  8070] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8070] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  8070] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  8070] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  8070] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[452]}, 88) = 452
[pid  8070] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  8070] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8070] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 8089 attached
 <unfinished ...>
[pid  8089] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  8089] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  8089] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  8089] open("./file0", O_RDONLY)   = 5
[pid  8089] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8070] <... futex resumed>)        = 0
[pid  8089] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8070] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8089] <... futex resumed>)        = 0
[pid  8070] <... futex resumed>)        = 1
[pid  8089] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  249.295985][ T8071] BTRFS info (device loop0): balance: start -d -m
[  249.306455][ T8071] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  249.335774][ T8071] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  8070] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  8089] <... ioctl resumed>)        = 0
[pid  8089] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  249.508494][ T8071] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  249.532274][ T8071] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  8089] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8071] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  8071] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8071] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8070] close(3)                    = 0
[pid  8070] close(4)                    = 0
[pid  8070] close(5)                    = 0
[pid  8070] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  8070] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  8070] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  8070] close(9)                    = -1 EBADF (Bad file descriptor)
[  249.552119][ T8071] BTRFS info (device loop0): balance: ended with status: 0
[pid  8070] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  8070] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  8070] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  8070] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  8070] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  8070] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  8070] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  8070] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  8070] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  8070] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  8070] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  8070] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  8070] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  8070] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  8070] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  8070] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  8070] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  8070] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  8070] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  8070] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  8070] exit_group(0 <unfinished ...>
[pid  8089] <... futex resumed>)        = ?
[pid  8071] <... futex resumed>)        = ?
[pid  8089] +++ exited with 0 +++
[pid  8070] <... exit_group resumed>)   = ?
[pid  8071] +++ exited with 0 +++
[pid  8070] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=450, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=44 /* 0.44 s */} ---
[pid  5073] umount2("./149", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./149", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./149/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./149/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./149/binderfs")    = 0
[pid  5073] umount2("./149/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./149/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./149/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./149/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./149/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./149/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./149")              = 0
[pid  5073] mkdir("./150", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 8090 attached
, child_tidptr=0x5555570a9690) = 453
[pid  8090] set_robust_list(0x5555570a96a0, 24) = 0
[pid  8090] chdir("./150")              = 0
[pid  8090] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  8090] setpgid(0, 0)               = 0
[pid  8090] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  8090] write(3, "1000", 4)         = 4
[pid  8090] close(3)                    = 0
[pid  8090] symlink("/dev/binderfs", "./binderfs") = 0
[pid  8090] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8090] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  8090] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  8090] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  8090] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 8091 attached
 => {parent_tid=[454]}, 88) = 454
[pid  8091] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  8090] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  8091] <... rseq resumed>)         = 0
[pid  8090] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  8091] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  8090] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8091] <... set_robust_list resumed>) = 0
[pid  8090] <... futex resumed>)        = 0
[pid  8091] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  8090] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  8091] memfd_create("syzkaller", 0) = 3
[pid  8091] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  8091] 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) = 16777216
[pid  8091] munmap(0x7f877d82c000, 138412032) = 0
[pid  8091] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  8091] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  8091] close(3)                    = 0
[pid  8091] mkdir("./file0", 0777)      = 0
[  250.165650][ T8091] loop0: detected capacity change from 0 to 32768
[  250.190272][ T8091] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (8091)
[  250.206266][ T8091] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  250.215541][ T8091] BTRFS info (device loop0): force clearing of disk cache
[  250.222636][ T8091] BTRFS info (device loop0): setting nodatasum
[  250.229046][ T8091] BTRFS info (device loop0): allowing degraded mounts
[  250.235870][ T8091] BTRFS info (device loop0): enabling disk space caching
[  250.242883][ T8091] BTRFS info (device loop0): disk space caching is enabled
[  250.264836][ T8091] BTRFS info (device loop0): enabling ssd optimizations
[  250.271796][ T8091] BTRFS info (device loop0): auto enabling async discard
[  250.279880][ T8091] BTRFS info (device loop0): rebuilding free space tree
[  250.291565][ T8091] BTRFS info (device loop0): disabling free space tree
[  250.298665][ T8091] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  8091] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  8091] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  8091] chdir("./file0")            = 0
[pid  8091] ioctl(4, LOOP_CLR_FD)       = 0
[pid  8091] close(4)                    = 0
[pid  8091] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8090] <... futex resumed>)        = 0
[pid  8090] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8091] open("./file0", O_RDONLY <unfinished ...>
[pid  8090] <... futex resumed>)        = 0
[pid  8091] <... open resumed>)         = 4
[pid  8090] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  8091] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8090] <... futex resumed>)        = 0
[pid  8091] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8090] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8091] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  8090] <... futex resumed>)        = 0
[pid  8091] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[  250.308332][ T8091] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  250.321528][ T8091] BTRFS info (device loop0): checking UUID tree
[pid  8090] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  8091] <... ioctl resumed>)        = 0
[pid  8091] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8090] <... futex resumed>)        = 0
[pid  8091] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8090] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8091] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  8090] <... futex resumed>)        = 0
[pid  8091] 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}} <unfinished ...>
[pid  8090] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  8090] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8090] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  8090] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  8090] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  8090] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 8109 attached
 => {parent_tid=[455]}, 88) = 455
[pid  8109] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  8090] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  8109] <... rseq resumed>)         = 0
[pid  8090] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  8109] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  8090] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8109] <... set_robust_list resumed>) = 0
[pid  8090] <... futex resumed>)        = 0
[pid  8109] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  8090] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  8109] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  8109] open("./file0", O_RDONLY)   = 5
[pid  8109] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8090] <... futex resumed>)        = 0
[pid  8090] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8109] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  8090] <... futex resumed>)        = 0
[  250.386216][ T8091] BTRFS info (device loop0): balance: start -d -m
[  250.395647][ T8091] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  250.418688][ T8091] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  8090] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  8109] <... ioctl resumed>)        = 0
[pid  8109] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  250.600870][ T8091] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  250.625378][ T8091] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  8109] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8091] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  8091] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8091] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8090] close(3)                    = 0
[pid  8090] close(4)                    = 0
[pid  8090] close(5)                    = 0
[  250.644689][ T8091] BTRFS info (device loop0): balance: ended with status: 0
[pid  8090] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  8090] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  8090] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  8090] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  8090] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  8090] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  8090] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  8090] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  8090] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  8090] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  8090] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  8090] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  8090] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  8090] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  8090] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  8090] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  8090] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  8090] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  8090] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  8090] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  8090] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  8090] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  8090] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  8090] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  8090] exit_group(0)               = ?
[pid  8109] <... futex resumed>)        = ?
[pid  8091] <... futex resumed>)        = ?
[pid  8109] +++ exited with 0 +++
[pid  8091] +++ exited with 0 +++
[pid  8090] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=453, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=37 /* 0.37 s */} ---
[pid  5073] umount2("./150", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./150", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./150/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./150/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./150/binderfs")    = 0
[pid  5073] umount2("./150/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./150/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./150/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./150/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./150/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./150/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./150")              = 0
[pid  5073] mkdir("./151", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 8110 attached
 <unfinished ...>
[pid  8110] set_robust_list(0x5555570a96a0, 24 <unfinished ...>
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 456
[pid  8110] <... set_robust_list resumed>) = 0
[pid  8110] chdir("./151")              = 0
[pid  8110] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  8110] setpgid(0, 0)               = 0
[pid  8110] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  8110] write(3, "1000", 4)         = 4
[pid  8110] close(3)                    = 0
[pid  8110] symlink("/dev/binderfs", "./binderfs") = 0
[pid  8110] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8110] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  8110] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  8110] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  8110] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 8111 attached
 <unfinished ...>
[pid  8111] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  8110] <... clone3 resumed> => {parent_tid=[457]}, 88) = 457
[pid  8111] <... rseq resumed>)         = 0
[pid  8110] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  8111] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  8110] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  8111] <... set_robust_list resumed>) = 0
[pid  8110] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8111] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  8110] <... futex resumed>)        = 0
[pid  8111] memfd_create("syzkaller", 0 <unfinished ...>
[pid  8110] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  8111] <... memfd_create resumed>) = 3
[pid  8111] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  8111] 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) = 16777216
[pid  8111] munmap(0x7f877d82c000, 138412032) = 0
[pid  8111] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  8111] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  8111] close(3)                    = 0
[pid  8111] mkdir("./file0", 0777)      = 0
[  251.162298][ T8111] loop0: detected capacity change from 0 to 32768
[  251.182198][ T8111] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (8111)
[  251.198522][ T8111] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  251.207890][ T8111] BTRFS info (device loop0): force clearing of disk cache
[  251.215108][ T8111] BTRFS info (device loop0): setting nodatasum
[  251.221271][ T8111] BTRFS info (device loop0): allowing degraded mounts
[  251.228334][ T8111] BTRFS info (device loop0): enabling disk space caching
[  251.235400][ T8111] BTRFS info (device loop0): disk space caching is enabled
[  251.257578][ T8111] BTRFS info (device loop0): enabling ssd optimizations
[  251.264582][ T8111] BTRFS info (device loop0): auto enabling async discard
[  251.272491][ T8111] BTRFS info (device loop0): rebuilding free space tree
[  251.284994][ T8111] BTRFS info (device loop0): disabling free space tree
[  251.291885][ T8111] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  251.301573][ T8111] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  8111] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  8111] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  8111] chdir("./file0")            = 0
[pid  8111] ioctl(4, LOOP_CLR_FD)       = 0
[pid  8111] close(4)                    = 0
[pid  8111] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8110] <... futex resumed>)        = 0
[pid  8111] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8110] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8111] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  8111] open("./file0", O_RDONLY <unfinished ...>
[pid  8110] <... futex resumed>)        = 0
[pid  8111] <... open resumed>)         = 4
[pid  8110] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  8111] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8110] <... futex resumed>)        = 0
[pid  8111] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8110] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8111] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  8110] <... futex resumed>)        = 0
[pid  8111] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  8110] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  8111] <... ioctl resumed>)        = 0
[pid  8111] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8110] <... futex resumed>)        = 0
[pid  8111] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8110] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8111] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  8110] <... futex resumed>)        = 0
[pid  8111] 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}} <unfinished ...>
[  251.315655][ T8111] BTRFS info (device loop0): checking UUID tree
[pid  8110] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  8110] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8110] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  8110] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  8110] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  8110] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 8129 attached
 <unfinished ...>
[pid  8129] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  8110] <... clone3 resumed> => {parent_tid=[458]}, 88) = 458
[pid  8129] <... rseq resumed>)         = 0
[pid  8129] set_robust_list(0x7f8785c2b9a0, 24 <unfinished ...>
[pid  8110] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  8129] <... set_robust_list resumed>) = 0
[pid  8129] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  8110] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  8129] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  8129] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8110] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8129] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  8110] <... futex resumed>)        = 0
[pid  8129] open("./file0", O_RDONLY <unfinished ...>
[pid  8110] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  8129] <... open resumed>)         = 5
[pid  8129] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8110] <... futex resumed>)        = 0
[pid  8129] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8110] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8129] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  8110] <... futex resumed>)        = 0
[pid  8129] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  251.370386][ T8111] BTRFS info (device loop0): balance: start -d -m
[  251.379435][ T8111] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  251.406956][ T8111] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  8110] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  8129] <... ioctl resumed>)        = 0
[pid  8129] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  251.586817][ T8111] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  251.611717][ T8111] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  8129] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8111] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  8111] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8111] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8110] close(3)                    = 0
[pid  8110] close(4)                    = 0
[pid  8110] close(5)                    = 0
[pid  8110] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  8110] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  8110] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  8110] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  8110] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  8110] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  8110] close(12)                   = -1 EBADF (Bad file descriptor)
[  251.630746][ T8111] BTRFS info (device loop0): balance: ended with status: 0
[pid  8110] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  8110] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  8110] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  8110] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  8110] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  8110] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  8110] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  8110] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  8110] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  8110] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  8110] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  8110] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  8110] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  8110] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  8110] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  8110] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  8110] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  8110] exit_group(0 <unfinished ...>
[pid  8129] <... futex resumed>)        = ?
[pid  8111] <... futex resumed>)        = ?
[pid  8110] <... exit_group resumed>)   = ?
[pid  8129] +++ exited with 0 +++
[pid  8111] +++ exited with 0 +++
[pid  8110] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=456, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=41 /* 0.41 s */} ---
[pid  5073] umount2("./151", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./151", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./151/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./151/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./151/binderfs")    = 0
[pid  5073] umount2("./151/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./151/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./151/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./151/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./151/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./151/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./151")              = 0
[pid  5073] mkdir("./152", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 8130 attached
, child_tidptr=0x5555570a9690) = 459
[pid  8130] set_robust_list(0x5555570a96a0, 24) = 0
[pid  8130] chdir("./152")              = 0
[pid  8130] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  8130] setpgid(0, 0)               = 0
[pid  8130] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  8130] write(3, "1000", 4)         = 4
[pid  8130] close(3)                    = 0
[pid  8130] symlink("/dev/binderfs", "./binderfs") = 0
[pid  8130] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8130] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  8130] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  8130] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  8130] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 8131 attached
 <unfinished ...>
[pid  8131] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  8130] <... clone3 resumed> => {parent_tid=[460]}, 88) = 460
[pid  8131] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  8130] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  8131] <... set_robust_list resumed>) = 0
[pid  8130] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  8131] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  8130] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8131] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  8131] memfd_create("syzkaller", 0 <unfinished ...>
[pid  8130] <... futex resumed>)        = 0
[pid  8130] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  8131] <... memfd_create resumed>) = 3
[pid  8131] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  8131] 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) = 16777216
[pid  8131] munmap(0x7f877d82c000, 138412032) = 0
[pid  8131] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  8131] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  8131] close(3)                    = 0
[pid  8131] mkdir("./file0", 0777)      = 0
[  252.302147][ T8131] loop0: detected capacity change from 0 to 32768
[  252.317054][ T8131] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (8131)
[  252.332810][ T8131] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  252.342112][ T8131] BTRFS info (device loop0): force clearing of disk cache
[  252.349347][ T8131] BTRFS info (device loop0): setting nodatasum
[  252.355576][ T8131] BTRFS info (device loop0): allowing degraded mounts
[  252.362332][ T8131] BTRFS info (device loop0): enabling disk space caching
[  252.369401][ T8131] BTRFS info (device loop0): disk space caching is enabled
[  252.390679][ T8131] BTRFS info (device loop0): enabling ssd optimizations
[  252.397786][ T8131] BTRFS info (device loop0): auto enabling async discard
[  252.405996][ T8131] BTRFS info (device loop0): rebuilding free space tree
[  252.417874][ T8131] BTRFS info (device loop0): disabling free space tree
[  252.424840][ T8131] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  252.434805][ T8131] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  8131] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  8131] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  8131] chdir("./file0")            = 0
[pid  8131] ioctl(4, LOOP_CLR_FD)       = 0
[pid  8131] close(4)                    = 0
[pid  8131] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8130] <... futex resumed>)        = 0
[pid  8130] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8131] open("./file0", O_RDONLY <unfinished ...>
[pid  8130] <... futex resumed>)        = 0
[pid  8131] <... open resumed>)         = 4
[  252.448665][ T8131] BTRFS info (device loop0): checking UUID tree
[pid  8130] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  8131] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8130] <... futex resumed>)        = 0
[pid  8131] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8130] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8131] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  8130] <... futex resumed>)        = 0
[pid  8131] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  8130] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  8131] <... ioctl resumed>)        = 0
[pid  8131] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8130] <... futex resumed>)        = 0
[pid  8131] 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}} <unfinished ...>
[pid  8130] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8130] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  8130] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8130] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  8130] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  8130] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  8130] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[461]}, 88) = 461
[pid  8130] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
./strace-static-x86_64: Process 8149 attached
[pid  8130] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8149] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  8130] <... futex resumed>)        = 0
[pid  8149] <... rseq resumed>)         = 0
[pid  8130] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  8149] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  8149] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  8149] open("./file0", O_RDONLY)   = 5
[  252.510164][ T8131] BTRFS info (device loop0): balance: start -d -m
[  252.519207][ T8131] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  252.545456][ T8131] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  8149] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8130] <... futex resumed>)        = 0
[pid  8130] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8149] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  8130] <... futex resumed>)        = 0
[pid  8130] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[  252.664258][ T8131] BTRFS info (device loop0): found 9 extents, stage: move data extents
[pid  8149] <... ioctl resumed>)        = 0
[pid  8149] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8149] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8131] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  8131] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8131] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8130] close(3)                    = 0
[pid  8130] close(4)                    = 0
[pid  8130] close(5)                    = 0
[pid  8130] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  8130] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  8130] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  8130] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  8130] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  8130] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  8130] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  8130] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  8130] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  8130] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  8130] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  8130] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  8130] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  8130] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  8130] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  8130] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  8130] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  8130] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  8130] close(24)                   = -1 EBADF (Bad file descriptor)
[  252.742598][ T8131] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[  252.762405][ T8131] BTRFS info (device loop0): balance: ended with status: 0
[pid  8130] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  8130] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  8130] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  8130] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  8130] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  8130] exit_group(0 <unfinished ...>
[pid  8149] <... futex resumed>)        = ?
[pid  8130] <... exit_group resumed>)   = ?
[pid  8149] +++ exited with 0 +++
[pid  8131] <... futex resumed>)        = ?
[pid  8131] +++ exited with 0 +++
[pid  8130] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=459, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=44 /* 0.44 s */} ---
[pid  5073] umount2("./152", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./152", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./152/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./152/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./152/binderfs")    = 0
[pid  5073] umount2("./152/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./152/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./152/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./152/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./152/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./152/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./152")              = 0
[pid  5073] mkdir("./153", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 8150 attached
, child_tidptr=0x5555570a9690) = 462
[pid  8150] set_robust_list(0x5555570a96a0, 24) = 0
[pid  8150] chdir("./153")              = 0
[pid  8150] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  8150] setpgid(0, 0)               = 0
[pid  8150] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  8150] write(3, "1000", 4)         = 4
[pid  8150] close(3)                    = 0
[pid  8150] symlink("/dev/binderfs", "./binderfs") = 0
[pid  8150] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8150] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  8150] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  8150] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  8150] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 8151 attached
 <unfinished ...>
[pid  8151] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  8150] <... clone3 resumed> => {parent_tid=[463]}, 88) = 463
[pid  8151] <... rseq resumed>)         = 0
[pid  8150] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  8151] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  8150] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  8151] <... set_robust_list resumed>) = 0
[pid  8150] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8151] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  8150] <... futex resumed>)        = 0
[pid  8151] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  8150] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  8151] memfd_create("syzkaller", 0) = 3
[pid  8151] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  8151] 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) = 16777216
[pid  8151] munmap(0x7f877d82c000, 138412032) = 0
[pid  8151] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  8151] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  8151] close(3)                    = 0
[pid  8151] mkdir("./file0", 0777)      = 0
[  253.353355][ T8151] loop0: detected capacity change from 0 to 32768
[  253.379373][ T8151] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (8151)
[  253.395452][ T8151] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  253.404729][ T8151] BTRFS info (device loop0): force clearing of disk cache
[  253.411826][ T8151] BTRFS info (device loop0): setting nodatasum
[  253.418064][ T8151] BTRFS info (device loop0): allowing degraded mounts
[  253.424929][ T8151] BTRFS info (device loop0): enabling disk space caching
[  253.431965][ T8151] BTRFS info (device loop0): disk space caching is enabled
[  253.453576][ T8151] BTRFS info (device loop0): enabling ssd optimizations
[  253.460668][ T8151] BTRFS info (device loop0): auto enabling async discard
[  253.469298][ T8151] BTRFS info (device loop0): rebuilding free space tree
[  253.481099][ T8151] BTRFS info (device loop0): disabling free space tree
[  253.488028][ T8151] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  8151] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  8151] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  8151] chdir("./file0")            = 0
[pid  8151] ioctl(4, LOOP_CLR_FD)       = 0
[pid  8151] close(4)                    = 0
[pid  8151] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8150] <... futex resumed>)        = 0
[pid  8151] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8150] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8151] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  8150] <... futex resumed>)        = 0
[pid  8151] open("./file0", O_RDONLY <unfinished ...>
[pid  8150] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  8151] <... open resumed>)         = 4
[pid  8151] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8150] <... futex resumed>)        = 0
[pid  8151] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL) = -1 EAGAIN (Resource temporarily unavailable)
[pid  8150] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8151] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  8150] <... futex resumed>)        = 0
[pid  8151] <... ioctl resumed>)        = 0
[  253.497698][ T8151] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  253.511260][ T8151] BTRFS info (device loop0): checking UUID tree
[pid  8150] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  8151] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8150] <... futex resumed>)        = 0
[pid  8151] 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}} <unfinished ...>
[pid  8150] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8150] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  8150] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8150] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  8150] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  8150] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  8150] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[464]}, 88) = 464
[pid  8150] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  8150] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8150] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 8169 attached
 <unfinished ...>
[pid  8169] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  8169] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  8169] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  8169] open("./file0", O_RDONLY)   = 5
[pid  8169] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8150] <... futex resumed>)        = 0
[pid  8169] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8150] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8169] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  8150] <... futex resumed>)        = 0
[pid  8169] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  253.572712][ T8151] BTRFS info (device loop0): balance: start -d -m
[  253.584534][ T8151] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  253.609156][ T8151] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  8150] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  8169] <... ioctl resumed>)        = 0
[pid  8169] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  253.769909][ T8151] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  253.793531][ T8151] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  8169] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8151] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  8151] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8151] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8150] close(3)                    = 0
[pid  8150] close(4)                    = 0
[pid  8150] close(5)                    = 0
[pid  8150] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  8150] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  8150] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  8150] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  8150] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  8150] close(11)                   = -1 EBADF (Bad file descriptor)
[  253.813240][ T8151] BTRFS info (device loop0): balance: ended with status: 0
[pid  8150] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  8150] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  8150] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  8150] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  8150] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  8150] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  8150] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  8150] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  8150] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  8150] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  8150] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  8150] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  8150] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  8150] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  8150] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  8150] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  8150] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  8150] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  8150] exit_group(0 <unfinished ...>
[pid  8169] <... futex resumed>)        = ?
[pid  8151] <... futex resumed>)        = ?
[pid  8150] <... exit_group resumed>)   = ?
[pid  8169] +++ exited with 0 +++
[pid  8151] +++ exited with 0 +++
[pid  8150] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=462, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=40 /* 0.40 s */} ---
[pid  5073] restart_syscall(<... resuming interrupted clone ...>) = 0
[pid  5073] umount2("./153", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./153", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./153/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./153/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./153/binderfs")    = 0
[pid  5073] umount2("./153/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./153/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./153/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./153/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./153/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./153/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./153")              = 0
[pid  5073] mkdir("./154", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 8170 attached
 <unfinished ...>
[pid  8170] set_robust_list(0x5555570a96a0, 24 <unfinished ...>
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 465
[pid  8170] <... set_robust_list resumed>) = 0
[pid  8170] chdir("./154")              = 0
[pid  8170] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  8170] setpgid(0, 0)               = 0
[pid  8170] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  8170] write(3, "1000", 4)         = 4
[pid  8170] close(3)                    = 0
[pid  8170] symlink("/dev/binderfs", "./binderfs") = 0
[pid  8170] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8170] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  8170] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  8170] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  8170] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 8171 attached
 <unfinished ...>
[pid  8171] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053) = 0
[pid  8170] <... clone3 resumed> => {parent_tid=[466]}, 88) = 466
[pid  8171] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  8170] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  8171] <... set_robust_list resumed>) = 0
[pid  8171] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  8170] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  8171] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  8170] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8171] memfd_create("syzkaller", 0 <unfinished ...>
[pid  8170] <... futex resumed>)        = 0
[pid  8170] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  8171] <... memfd_create resumed>) = 3
[pid  8171] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  8171] 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) = 16777216
[pid  8171] munmap(0x7f877d82c000, 138412032) = 0
[pid  8171] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  8171] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  8171] close(3)                    = 0
[pid  8171] mkdir("./file0", 0777)      = 0
[  254.469352][ T8171] loop0: detected capacity change from 0 to 32768
[  254.489162][ T8171] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (8171)
[  254.504858][ T8171] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  254.514116][ T8171] BTRFS info (device loop0): force clearing of disk cache
[  254.521212][ T8171] BTRFS info (device loop0): setting nodatasum
[  254.527750][ T8171] BTRFS info (device loop0): allowing degraded mounts
[  254.534839][ T8171] BTRFS info (device loop0): enabling disk space caching
[  254.541867][ T8171] BTRFS info (device loop0): disk space caching is enabled
[  254.563044][ T8171] BTRFS info (device loop0): enabling ssd optimizations
[  254.570084][ T8171] BTRFS info (device loop0): auto enabling async discard
[  254.578321][ T8171] BTRFS info (device loop0): rebuilding free space tree
[  254.590983][ T8171] BTRFS info (device loop0): disabling free space tree
[  254.597938][ T8171] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[  254.607635][ T8171] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[pid  8171] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  8171] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  8171] chdir("./file0")            = 0
[pid  8171] ioctl(4, LOOP_CLR_FD)       = 0
[pid  8171] close(4)                    = 0
[pid  8171] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8170] <... futex resumed>)        = 0
[pid  8171] <... futex resumed>)        = 1
[pid  8170] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8171] open("./file0", O_RDONLY <unfinished ...>
[pid  8170] <... futex resumed>)        = 0
[pid  8171] <... open resumed>)         = 4
[pid  8170] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  8171] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8170] <... futex resumed>)        = 0
[pid  8170] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8171] <... futex resumed>)        = 1
[pid  8170] <... futex resumed>)        = 0
[pid  8171] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  8170] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  8171] <... ioctl resumed>)        = 0
[pid  8171] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8170] <... futex resumed>)        = 0
[pid  8171] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8170] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8171] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  8170] <... futex resumed>)        = 0
[pid  8171] 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}} <unfinished ...>
[  254.620575][ T8171] BTRFS info (device loop0): checking UUID tree
[  254.654131][ T8171] BTRFS info (device loop0): balance: start -d -m
[pid  8170] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  8170] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8170] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  8170] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  8170] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  8170] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0}./strace-static-x86_64: Process 8189 attached
 <unfinished ...>
[pid  8189] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  8189] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  8189] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  8189] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8170] <... clone3 resumed> => {parent_tid=[467]}, 88) = 467
[pid  8170] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  8170] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8189] <... futex resumed>)        = 0
[pid  8170] <... futex resumed>)        = 1
[pid  8170] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  8189] open("./file0", O_RDONLY)   = 5
[pid  8189] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8170] <... futex resumed>)        = 0
[pid  8189] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8170] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8170] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  8189] <... futex resumed>)        = 0
[  254.662569][ T8171] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[  254.688276][ T8171] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  8189] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[pid  8170] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  8189] <... ioctl resumed>)        = 0
[pid  8189] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  254.868341][ T8171] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  254.893206][ T8171] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  8189] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8171] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  8171] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8171] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8170] close(3)                    = 0
[pid  8170] close(4)                    = 0
[pid  8170] close(5)                    = 0
[pid  8170] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  8170] close(7)                    = -1 EBADF (Bad file descriptor)
[  254.912759][ T8171] BTRFS info (device loop0): balance: ended with status: 0
[pid  8170] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  8170] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  8170] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  8170] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  8170] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  8170] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  8170] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  8170] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  8170] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  8170] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  8170] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  8170] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  8170] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  8170] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  8170] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  8170] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  8170] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  8170] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  8170] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  8170] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  8170] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  8170] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  8170] exit_group(0 <unfinished ...>
[pid  8189] <... futex resumed>)        = ?
[pid  8170] <... exit_group resumed>)   = ?
[pid  8189] +++ exited with 0 +++
[pid  8171] <... futex resumed>)        = ?
[pid  8171] +++ exited with 0 +++
[pid  8170] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=465, si_uid=0, si_status=0, si_utime=4 /* 0.04 s */, si_stime=42 /* 0.42 s */} ---
[pid  5073] umount2("./154", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./154", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./154/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./154/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./154/binderfs")    = 0
[pid  5073] umount2("./154/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./154/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./154/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./154/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./154/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./154/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./154")              = 0
[pid  5073] mkdir("./155", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 8190 attached
 <unfinished ...>
[pid  8190] set_robust_list(0x5555570a96a0, 24) = 0
[pid  8190] chdir("./155" <unfinished ...>
[pid  5073] <... clone resumed>, child_tidptr=0x5555570a9690) = 468
[pid  8190] <... chdir resumed>)        = 0
[pid  8190] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  8190] setpgid(0, 0)               = 0
[pid  8190] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  8190] write(3, "1000", 4)         = 4
[pid  8190] close(3)                    = 0
[pid  8190] symlink("/dev/binderfs", "./binderfs") = 0
[pid  8190] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8190] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  8190] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  8190] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  8190] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 8191 attached
 <unfinished ...>
[pid  8191] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  8190] <... clone3 resumed> => {parent_tid=[469]}, 88) = 469
[pid  8191] <... rseq resumed>)         = 0
[pid  8190] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  8191] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  8190] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  8191] <... set_robust_list resumed>) = 0
[pid  8190] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8191] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  8190] <... futex resumed>)        = 0
[pid  8191] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  8190] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  8191] memfd_create("syzkaller", 0) = 3
[pid  8191] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  8191] 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) = 16777216
[pid  8191] munmap(0x7f877d82c000, 138412032) = 0
[pid  8191] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  8191] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  8191] close(3)                    = 0
[pid  8191] mkdir("./file0", 0777)      = 0
[  255.507334][ T8191] loop0: detected capacity change from 0 to 32768
[  255.531090][ T8191] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (8191)
[  255.546701][ T8191] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  255.555956][ T8191] BTRFS info (device loop0): force clearing of disk cache
[  255.563050][ T8191] BTRFS info (device loop0): setting nodatasum
[  255.569260][ T8191] BTRFS info (device loop0): allowing degraded mounts
[  255.576243][ T8191] BTRFS info (device loop0): enabling disk space caching
[  255.583264][ T8191] BTRFS info (device loop0): disk space caching is enabled
[  255.605540][ T8191] BTRFS info (device loop0): enabling ssd optimizations
[  255.612689][ T8191] BTRFS info (device loop0): auto enabling async discard
[  255.621254][ T8191] BTRFS info (device loop0): rebuilding free space tree
[  255.633024][ T8191] BTRFS info (device loop0): disabling free space tree
[  255.639982][ T8191] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  8191] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  8191] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  8191] chdir("./file0")            = 0
[pid  8191] ioctl(4, LOOP_CLR_FD)       = 0
[pid  8191] close(4)                    = 0
[pid  8191] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8191] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8190] <... futex resumed>)        = 0
[pid  8190] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 1
[  255.649662][ T8191] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  255.662979][ T8191] BTRFS info (device loop0): checking UUID tree
[pid  8190] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  8191] <... futex resumed>)        = 0
[pid  8191] open("./file0", O_RDONLY)   = 4
[pid  8191] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8191] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8190] <... futex resumed>)        = 0
[pid  8190] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8191] <... futex resumed>)        = 0
[pid  8190] <... futex resumed>)        = 1
[pid  8191] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  8190] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  8191] <... ioctl resumed>)        = 0
[pid  8191] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8190] <... futex resumed>)        = 0
[pid  8190] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8191] 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}} <unfinished ...>
[pid  8190] <... futex resumed>)        = 0
[  255.757017][ T8191] BTRFS info (device loop0): balance: start -d -m
[  255.770090][ T8191] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  8190] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  8190] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8190] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  8190] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  8190] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  8190] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[470]}, 88) = 470
[pid  8190] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  8190] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8190] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 8209 attached
 <unfinished ...>
[pid  8209] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053) = 0
[pid  8209] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  8209] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  8209] open("./file0", O_RDONLY)   = 5
[pid  8209] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8190] <... futex resumed>)        = 0
[pid  8209] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8190] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8209] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  8190] <... futex resumed>)        = 0
[pid  8209] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  255.799523][ T8191] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[pid  8190] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[pid  8209] <... ioctl resumed>)        = 0
[pid  8209] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  255.927544][ T8191] BTRFS info (device loop0): found 9 extents, stage: move data extents
[  255.952786][ T8191] BTRFS info (device loop0): found 1 extents, stage: update data pointers
[pid  8209] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8191] <... ioctl resumed> => {flags=BTRFS_BALANCE_DATA|BTRFS_BALANCE_METADATA, state=0, 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}}) = 0
[pid  8191] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8191] futex(0x7f878651e6e8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8190] close(3)                    = 0
[pid  8190] close(4)                    = 0
[pid  8190] close(5)                    = 0
[pid  8190] close(6)                    = -1 EBADF (Bad file descriptor)
[pid  8190] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  8190] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  8190] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  8190] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  8190] close(11)                   = -1 EBADF (Bad file descriptor)
[  255.970909][ T8191] BTRFS info (device loop0): balance: ended with status: 0
[pid  8190] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  8190] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  8190] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  8190] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  8190] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  8190] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  8190] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  8190] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  8190] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  8190] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  8190] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  8190] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  8190] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  8190] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  8190] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  8190] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  8190] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  8190] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  8190] exit_group(0 <unfinished ...>
[pid  8191] <... futex resumed>)        = ?
[pid  8209] <... futex resumed>)        = ?
[pid  8209] +++ exited with 0 +++
[pid  8191] +++ exited with 0 +++
[pid  8190] <... exit_group resumed>)   = ?
[pid  8190] +++ exited with 0 +++
[pid  5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=468, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=42 /* 0.42 s */} ---
[pid  5073] umount2("./155", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./155", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3
[pid  5073] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 4 entries */, 32768) = 112
[pid  5073] umount2("./155/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./155/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] unlink("./155/binderfs")    = 0
[pid  5073] umount2("./155/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = 0
[pid  5073] umount2("./155/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] newfstatat(AT_FDCWD, "./155/file0", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0
[pid  5073] umount2("./155/file0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument)
[pid  5073] openat(AT_FDCWD, "./155/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4
[pid  5073] newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0
[pid  5073] getdents64(4, 0x5555570b2890 /* 2 entries */, 32768) = 48
[pid  5073] getdents64(4, 0x5555570b2890 /* 0 entries */, 32768) = 0
[pid  5073] close(4)                    = 0
[pid  5073] rmdir("./155/file0")        = 0
[pid  5073] getdents64(3, 0x5555570aa850 /* 0 entries */, 32768) = 0
[pid  5073] close(3)                    = 0
[pid  5073] rmdir("./155")              = 0
[pid  5073] mkdir("./156", 0777)        = 0
[pid  5073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
[pid  5073] ioctl(3, LOOP_CLR_FD)       = -1 ENXIO (No such device or address)
[pid  5073] close(3)                    = 0
[pid  5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 8210 attached
, child_tidptr=0x5555570a9690) = 471
[pid  8210] set_robust_list(0x5555570a96a0, 24) = 0
[pid  8210] chdir("./156")              = 0
[pid  8210] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  8210] setpgid(0, 0)               = 0
[pid  8210] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  8210] write(3, "1000", 4)         = 4
[pid  8210] close(3)                    = 0
[pid  8210] symlink("/dev/binderfs", "./binderfs") = 0
[pid  8210] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8210] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c2c000
[pid  8210] mprotect(0x7f8785c2d000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  8210] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  8210] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c4c990, parent_tid=0x7f8785c4c990, exit_signal=0, stack=0x7f8785c2c000, stack_size=0x20300, tls=0x7f8785c4c6c0}./strace-static-x86_64: Process 8211 attached
 <unfinished ...>
[pid  8211] rseq(0x7f8785c4cfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  8210] <... clone3 resumed> => {parent_tid=[472]}, 88) = 472
[pid  8211] <... rseq resumed>)         = 0
[pid  8210] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  8211] set_robust_list(0x7f8785c4c9a0, 24 <unfinished ...>
[pid  8210] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  8211] <... set_robust_list resumed>) = 0
[pid  8210] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8211] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid  8210] <... futex resumed>)        = 0
[pid  8211] <... rt_sigprocmask resumed>NULL, 8) = 0
[pid  8210] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} <unfinished ...>
[pid  8211] memfd_create("syzkaller", 0) = 3
[pid  8211] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f877d82c000
[pid  8211] 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) = 16777216
[pid  8211] munmap(0x7f877d82c000, 138412032) = 0
[pid  8211] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid  8211] ioctl(4, LOOP_SET_FD, 3)    = 0
[pid  8211] close(3)                    = 0
[pid  8211] mkdir("./file0", 0777)      = 0
[  256.479369][ T8211] loop0: detected capacity change from 0 to 32768
[  256.505972][ T8211] BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 scanned by syz-executor397 (8211)
[  256.522993][ T8211] BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
[  256.532278][ T8211] BTRFS info (device loop0): force clearing of disk cache
[  256.539412][ T8211] BTRFS info (device loop0): setting nodatasum
[  256.545615][ T8211] BTRFS info (device loop0): allowing degraded mounts
[  256.552384][ T8211] BTRFS info (device loop0): enabling disk space caching
[  256.559428][ T8211] BTRFS info (device loop0): disk space caching is enabled
[  256.580594][ T8211] BTRFS info (device loop0): enabling ssd optimizations
[  256.587729][ T8211] BTRFS info (device loop0): auto enabling async discard
[  256.596698][ T8211] BTRFS info (device loop0): rebuilding free space tree
[  256.609065][ T8211] BTRFS info (device loop0): disabling free space tree
[  256.615996][ T8211] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
[pid  8211] mount("/dev/loop0", "./file0", "btrfs", MS_NOEXEC|MS_STRICTATIME, "datacow,clear_cache,nodatasum,rescan_uuid_tree,degraded,space_cache=v1,") = 0
[pid  8211] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid  8211] chdir("./file0")            = 0
[pid  8211] ioctl(4, LOOP_CLR_FD)       = 0
[pid  8211] close(4)                    = 0
[pid  8211] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8210] <... futex resumed>)        = 0
[  256.625681][ T8211] BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
[  256.639319][ T8211] BTRFS info (device loop0): checking UUID tree
[pid  8210] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8211] open("./file0", O_RDONLY <unfinished ...>
[pid  8210] <... futex resumed>)        = 0
[pid  8211] <... open resumed>)         = 4
[pid  8210] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  8211] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8210] <... futex resumed>)        = 0
[pid  8210] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8211] ioctl(4, BTRFS_IOC_GET_SUBVOL_INFO, 0x20001840 <unfinished ...>
[pid  8210] <... futex resumed>)        = 0
[pid  8211] <... ioctl resumed>)        = 0
[pid  8210] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  8211] futex(0x7f878651e6ec, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8210] <... futex resumed>)        = 0
[pid  8210] futex(0x7f878651e6e8, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8210] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  8211] <... futex resumed>)        = 1
[pid  8211] 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}} <unfinished ...>
[pid  8210] <... futex resumed>)        = -1 ETIMEDOUT (Connection timed out)
[pid  8210] futex(0x7f878651e6ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0}) = -1 ETIMEDOUT (Connection timed out)
[pid  8210] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[pid  8210] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f8785c0b000
[pid  8210] mprotect(0x7f8785c0c000, 131072, PROT_READ|PROT_WRITE) = 0
[pid  8210] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0
[pid  8210] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f8785c2b990, parent_tid=0x7f8785c2b990, exit_signal=0, stack=0x7f8785c0b000, stack_size=0x20300, tls=0x7f8785c2b6c0} => {parent_tid=[473]}, 88) = 473
[pid  8210] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  8210] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 8229 attached
) = 0
[pid  8229] rseq(0x7f8785c2bfe0, 0x20, 0, 0x53053053 <unfinished ...>
[pid  8210] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} <unfinished ...>
[pid  8229] <... rseq resumed>)         = 0
[pid  8229] set_robust_list(0x7f8785c2b9a0, 24) = 0
[pid  8229] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid  8229] open("./file0", O_RDONLY)   = 5
[pid  8229] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 1
[pid  8210] <... futex resumed>)        = 0
[pid  8229] futex(0x7f878651e6f8, FUTEX_WAIT_PRIVATE, 0, NULL <unfinished ...>
[pid  8210] futex(0x7f878651e6f8, FUTEX_WAKE_PRIVATE, 1000000 <unfinished ...>
[pid  8229] <... futex resumed>)        = -1 EAGAIN (Resource temporarily unavailable)
[pid  8210] <... futex resumed>)        = 0
[pid  8229] ioctl(5, FITRIM, {start=0, len=2885681152, minlen=0} <unfinished ...>
[  256.745991][ T8211] BTRFS info (device loop0): balance: start -d -m
[  256.757335][ T8211] BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
[pid  8210] futex(0x7f878651e6fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out)
[  256.829868][ T8211] BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
[  256.843729][ T2451] BTRFS warning (device loop0): Skipping commit of aborted transaction.
[  256.853598][ T2451] ------------[ cut here ]------------
[  256.859152][ T2451] BTRFS: Transaction aborted (error -28)
[  256.866254][ T2451] WARNING: CPU: 0 PID: 2451 at fs/btrfs/transaction.c:2057 btrfs_commit_transaction+0x2eb8/0x3b20
[pid  8229] <... ioctl resumed>)        = 0
[pid  8229] futex(0x7f878651e6fc, FUTEX_WAKE_PRIVATE, 1000000) = 0
[  256.877091][ T2451] Modules linked in:
[  256.880997][ T2451] CPU: 0 PID: 2451 Comm: kworker/u4:9 Not tainted 6.6.0-rc7-next-20231027-syzkaller #0
[  256.890710][ T2451] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
[  256.900813][ T2451] Workqueue: events_unbound btrfs_async_reclaim_metadata_space
[  256.908445][ T2451] RIP: 0010:btrfs_commit_transaction+0x2eb8/0x3b20
[  256.915148][ T2451] Code: fe 48 8b 7c 24 18 be 01 00 00 00 e8 22 49 e7 00 e9 cb f5 ff ff e8 68 36 0d fe 8b 74 24 18 48 c7 c7 60 ef 16 8b e8 88 b6 d2 fd <0f> 0b e9 91 f6 ff ff e8 4c 36 0d fe f0 83 44 24 fc 00 49 8d bc 24
[  256.935084][ T2451] RSP: 0018:ffffc90009dcf958 EFLAGS: 00010282
[  256.941175][ T2451] RAX: 0000000000000000 RBX: ffff88807c691000 RCX: ffffffff814e7eb9
[  256.949192][ T2451] RDX: ffff888025963b80 RSI: ffffffff814e7ec6 RDI: 0000000000000001
[  256.957236][ T2451] RBP: ffff888028904000 R08: 0000000000000001 R09: 0000000000000000
[  256.965247][ T2451] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001
[  256.973224][ T2451] R13: ffff888074ca2470 R14: ffff888074ca2618 R15: ffff888028904000
[  256.981232][ T2451] FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
[  256.990188][ T2451] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  256.996803][ T2451] CR2: 00007f87864cd750 CR3: 0000000028c07000 CR4: 00000000003506f0
[  257.004801][ T2451] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  257.012766][ T2451] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  257.020782][ T2451] Call Trace:
[  257.024106][ T2451]  <TASK>
[  257.027028][ T2451]  ? show_regs+0x8e/0xa0
[  257.031334][ T2451]  ? __warn+0xe5/0x380
[  257.035482][ T2451]  ? preempt_schedule_notrace+0x5e/0xe0
[  257.041085][ T2451]  ? btrfs_commit_transaction+0x2eb8/0x3b20
[  257.047024][ T2451]  ? report_bug+0x3bc/0x580
[  257.051575][ T2451]  ? handle_bug+0x3c/0x70
[  257.055959][ T2451]  ? exc_invalid_op+0x17/0x40
[  257.060659][ T2451]  ? asm_exc_invalid_op+0x1a/0x20
[  257.065793][ T2451]  ? __warn_printk+0x199/0x350
[  257.070573][ T2451]  ? __warn_printk+0x1a6/0x350
[  257.075391][ T2451]  ? btrfs_commit_transaction+0x2eb8/0x3b20
[  257.081313][ T2451]  ? btrfs_commit_transaction+0x2eb8/0x3b20
[  257.087279][ T2451]  ? create_pending_snapshots+0x2d0/0x2d0
[  257.093025][ T2451]  ? start_transaction+0x29a/0x1c80
[  257.098310][ T2451]  flush_space+0x1fa/0xd90
[  257.102749][ T2451]  ? find_held_lock+0x2d/0x110
[  257.107573][ T2451]  ? btrfs_space_info_update_bytes_may_use+0x420/0x420
[  257.114461][ T2451]  ? reacquire_held_locks+0x4b0/0x4b0
[  257.119838][ T2451]  ? btrfs_get_alloc_profile+0x2da/0x850
[  257.125508][ T2451]  ? btrfs_bg_type_to_factor+0x3c/0xa0
[  257.131060][ T2451]  btrfs_async_reclaim_metadata_space+0x51c/0xa90
[  257.137557][ T2451]  process_one_work+0x8a2/0x15e0
[  257.142519][ T2451]  ? lock_sync+0x180/0x180
[  257.146990][ T2451]  ? init_worker_pool+0x770/0x770
[  257.152036][ T2451]  ? assign_work+0x1a0/0x240
[  257.156671][ T2451]  worker_thread+0x8b6/0x1280
[  257.161373][ T2451]  ? __kthread_parkme+0x148/0x220
[  257.166431][ T2451]  ? process_one_work+0x15e0/0x15e0
[  257.171644][ T2451]  kthread+0x337/0x440
[  257.175743][ T2451]  ? _raw_spin_unlock_irq+0x23/0x50
[  257.180999][ T2451]  ? kthread_complete_and_exit+0x40/0x40
[  257.186664][ T2451]  ret_from_fork+0x45/0x80
[  257.191094][ T2451]  ? kthread_complete_and_exit+0x40/0x40
[  257.196778][ T2451]  ret_from_fork_asm+0x11/0x20
[  257.201604][ T2451]  </TASK>
[  257.204650][ T2451] Kernel panic - not syncing: kernel: panic_on_warn set ...
[  257.211914][ T2451] CPU: 0 PID: 2451 Comm: kworker/u4:9 Not tainted 6.6.0-rc7-next-20231027-syzkaller #0
[  257.221531][ T2451] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
[  257.231572][ T2451] Workqueue: events_unbound btrfs_async_reclaim_metadata_space
[  257.239112][ T2451] Call Trace:
[  257.242387][ T2451]  <TASK>
[  257.245307][ T2451]  dump_stack_lvl+0xd9/0x1b0
[  257.249889][ T2451]  panic+0x6dc/0x790
[  257.253789][ T2451]  ? panic_smp_self_stop+0xa0/0xa0
[  257.258892][ T2451]  ? show_trace_log_lvl+0x363/0x4f0
[  257.264097][ T2451]  ? check_panic_on_warn+0x1f/0xb0
[  257.269200][ T2451]  ? btrfs_commit_transaction+0x2eb8/0x3b20
[  257.275087][ T2451]  check_panic_on_warn+0xab/0xb0
[  257.280017][ T2451]  __warn+0xf1/0x380
[  257.283946][ T2451]  ? preempt_schedule_notrace+0x5e/0xe0
[  257.289512][ T2451]  ? btrfs_commit_transaction+0x2eb8/0x3b20
[  257.295418][ T2451]  report_bug+0x3bc/0x580
[  257.299738][ T2451]  handle_bug+0x3c/0x70
[  257.303892][ T2451]  exc_invalid_op+0x17/0x40
[  257.308407][ T2451]  asm_exc_invalid_op+0x1a/0x20
[  257.313270][ T2451] RIP: 0010:btrfs_commit_transaction+0x2eb8/0x3b20
[  257.319783][ T2451] Code: fe 48 8b 7c 24 18 be 01 00 00 00 e8 22 49 e7 00 e9 cb f5 ff ff e8 68 36 0d fe 8b 74 24 18 48 c7 c7 60 ef 16 8b e8 88 b6 d2 fd <0f> 0b e9 91 f6 ff ff e8 4c 36 0d fe f0 83 44 24 fc 00 49 8d bc 24
[  257.339391][ T2451] RSP: 0018:ffffc90009dcf958 EFLAGS: 00010282
[  257.345459][ T2451] RAX: 0000000000000000 RBX: ffff88807c691000 RCX: ffffffff814e7eb9
[  257.353428][ T2451] RDX: ffff888025963b80 RSI: ffffffff814e7ec6 RDI: 0000000000000001
[  257.361397][ T2451] RBP: ffff888028904000 R08: 0000000000000001 R09: 0000000000000000
[  257.369365][ T2451] R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001
[  257.377331][ T2451] R13: ffff888074ca2470 R14: ffff888074ca2618 R15: ffff888028904000
[  257.385310][ T2451]  ? __warn_printk+0x199/0x350
[  257.390077][ T2451]  ? __warn_printk+0x1a6/0x350
[  257.394852][ T2451]  ? btrfs_commit_transaction+0x2eb8/0x3b20
[  257.400770][ T2451]  ? create_pending_snapshots+0x2d0/0x2d0
[  257.406492][ T2451]  ? start_transaction+0x29a/0x1c80
[  257.411710][ T2451]  flush_space+0x1fa/0xd90
[  257.416139][ T2451]  ? find_held_lock+0x2d/0x110
[  257.420912][ T2451]  ? btrfs_space_info_update_bytes_may_use+0x420/0x420
[  257.427776][ T2451]  ? reacquire_held_locks+0x4b0/0x4b0
[  257.433157][ T2451]  ? btrfs_get_alloc_profile+0x2da/0x850
[  257.438802][ T2451]  ? btrfs_bg_type_to_factor+0x3c/0xa0
[  257.444275][ T2451]  btrfs_async_reclaim_metadata_space+0x51c/0xa90
[  257.450714][ T2451]  process_one_work+0x8a2/0x15e0
[  257.455666][ T2451]  ? lock_sync+0x180/0x180
[  257.460087][ T2451]  ? init_worker_pool+0x770/0x770
[  257.465126][ T2451]  ? assign_work+0x1a0/0x240
[  257.469728][ T2451]  worker_thread+0x8b6/0x1280
[  257.474422][ T2451]  ? __kthread_parkme+0x148/0x220
[  257.479450][ T2451]  ? process_one_work+0x15e0/0x15e0
[  257.484651][ T2451]  kthread+0x337/0x440
[  257.488720][ T2451]  ? _raw_spin_unlock_irq+0x23/0x50
[  257.493917][ T2451]  ? kthread_complete_and_exit+0x40/0x40
[  257.499557][ T2451]  ret_from_fork+0x45/0x80
[  257.503979][ T2451]  ? kthread_complete_and_exit+0x40/0x40
[  257.509616][ T2451]  ret_from_fork_asm+0x11/0x20
[  257.514401][ T2451]  </TASK>
[  257.517584][ T2451] Kernel Offset: disabled
[  257.521985][ T2451] Rebooting in 86400 seconds..