Device or resource busy (os error 16)

[shyn]

It's a powerpc32 NAS. i cross compiled a static link bore for it.

When run bore local 9090 --to bore.pub. The program exited with:

Error: could not connect to bore.pub:7835

Caused by:
    Device or resource busy (os error 16)

Have tried my own server. Failed the same.

maybe a memory issues?

root@OpenWrt:/data# time -f "Maximum resident set size (kbytes): %Mkb" ./bore-
s local 9090 --to bore.pub
Error: could not connect to bore.pub:7835

Caused by:
    Device or resource busy (os error 16)
Command exited with non-zero status 1
Maximum resident set size (kbytes): 10832kb

while free tell me:

root@OpenWrt:~# free -h
              total        used        free      shared  buff/cache   available
Mem:         251876      105792       22672       15704      123412       82060
Swap:             0           0           0

Also, i ran with strace:

brk(NULL)                               = 0x10adb000
brk(0x10adbe94)                         = 0x10adbe94
uname({sysname="Linux", nodename="OpenWrt", ...}) = 0
set_tid_address(0x10adb068)             = 14094
set_robust_list(0x10adb070, 12)         = 0
rt_sigaction(SIGRTMIN, {sa_handler=0x101b6d60, sa_mask=[], sa_flags=SA_SIGINFO}, NULL, 8) = 0
rt_sigaction(SIGRT_1, {sa_handler=0x101b6e50, sa_mask=[], sa_flags=SA_RESTART|SA_SIGINFO}, NULL, 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
ugetrlimit(RLIMIT_STACK, {rlim_cur=8192*1024, rlim_max=RLIM_INFINITY}) = 0
readlink("/proc/self/exe", "/data/bore-s", 4096) = 12
brk(0x10afce94)                         = 0x10afce94
brk(0x10afd000)                         = 0x10afd000
mprotect(0x10336000, 106496, PROT_READ) = 0
poll([{fd=0, events=0}, {fd=1, events=0}, {fd=2, events=0}], 3, 0) = 0 (Timeout)
rt_sigaction(SIGPIPE, {sa_handler=SIG_IGN, sa_mask=[PIPE], sa_flags=SA_RESTART}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGSEGV, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGSEGV, {sa_handler=0x1018cd30, sa_mask=[], sa_flags=SA_ONSTACK|SA_SIGINFO}, NULL, 8) = 0
rt_sigaction(SIGBUS, NULL, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGBUS, {sa_handler=0x1018cd30, sa_mask=[], sa_flags=SA_ONSTACK|SA_SIGINFO}, NULL, 8) = 0
sigaltstack(NULL, {ss_sp=NULL, ss_flags=SS_DISABLE, ss_size=0}) = 0
mmap2(NULL, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0xb7c01000
mprotect(0xb7c01000, 4096, PROT_NONE)   = 0
sigaltstack({ss_sp=0xb7c02000, ss_flags=0, ss_size=16384}, NULL) = 0
openat(AT_FDCWD, "/proc/self/maps", O_RDONLY|O_CLOEXEC) = 3
ugetrlimit(RLIMIT_STACK, {rlim_cur=8192*1024, rlim_max=RLIM_INFINITY}) = 0
fstat64(3, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
read(3, "00100000-00103000 r-xp 00000000 "..., 1024) = 478
close(3)                                = 0
sched_getaffinity(14094, 32, [0])       = 4
getrandom("\xdf\xc5\x06\x68\xd3\xdf\x1a\xa4\xac\x73\x7e\x68\xf7\x02\xb8\xac", 16, GRND_NONBLOCK) = 16
openat(AT_FDCWD, "/proc/self/cgroup", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 3
read(3, "0::/services/dropbear/instance1\n", 8192) = 32
read(3, "", 8192)                       = 0
close(3)                                = 0
sched_getaffinity(0, 128, [0])          = 4
epoll_create1(EPOLL_CLOEXEC)            = 3
eventfd2(0, EFD_CLOEXEC|EFD_NONBLOCK)   = 4
epoll_ctl(3, EPOLL_CTL_ADD, 4, {EPOLLIN|EPOLLRDHUP|EPOLLET, {u32=0, u64=2147483648}}) = 0
fcntl64(3, F_DUPFD_CLOEXEC, 3)          = 5
clock_gettime64(CLOCK_MONOTONIC, {tv_sec=694316, tv_nsec=987092879}) = 0
futex(0x10353c08, FUTEX_WAKE_PRIVATE, 2147483647) = 0
mmap2(NULL, 2101248, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0xb7a00000
mprotect(0xb7a01000, 2097152, PROT_READ|PROT_WRITE) = 0
clone(child_stack=0xb7bffcd0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[14095], tls=0xb7c07640, child_tidptr=0xb7c001d8) = 14095
clock_gettime64(CLOCK_MONOTONIC, {tv_sec=694316, tv_nsec=990417119}) = 0
mmap2(NULL, 2101248, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0xb77ff000
mprotect(0xb7800000, 2097152, PROT_READ|PROT_WRITE) = 0
clone(child_stack=0xb79fecd0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[14096], tls=0xb7a06640, child_tidptr=0xb79ff1d8) = 14096
write(4, "\0\0\0\0\0\0\0\1", 8)         = 8
futex(0x10adf144, FUTEX_WAIT_BITSET_PRIVATE, 0, NULL, FUTEX_BITSET_MATCH_ANY) = 0
write(4, "\0\0\0\0\0\0\0\1", 8)         = 8
futex(0x10adf238, FUTEX_WAKE_PRIVATE, 2147483647) = 0
futex(0x10adf1c8, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x10adf144, FUTEX_WAIT_BITSET_PRIVATE, 1, NULL, FUTEX_BITSET_MATCH_ANY) = 0
futex(0xb79ff1d8, FUTEX_WAIT, 14096, NULL) = 0
write(2, "Error: ", 7Error: )                  = 7
write(2, "could not connect to bore.pub:78"..., 34could not connect to bore.pub:7835) = 34
write(2, "\n\nCaused by:", 12

Caused by:)          = 12
write(2, "\n", 1
)                       = 1
write(2, "    ", 4    )                     = 4
write(2, "Device or resource busy", 23Device or resource busy) = 23
write(2, " (os error ", 11 (os error )             = 11
write(2, "16", 216)                       = 2
write(2, ")", 1))                        = 1
write(2, "\n", 1
)                       = 1
sigaltstack({ss_sp=NULL, ss_flags=SS_DISABLE, ss_size=16384}, NULL) = 0
munmap(0xb7c01000, 20480)               = 0
exit_group(1)                           = ?
+++ exited with 1 +++