Re: Protocol not attached

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On Mon, Sep 29, 2008 at 3:37 PM, Arnaldo Carvalho de Melo
<acme@xxxxxxxxxx> wrote:
> Em Mon, Sep 29, 2008 at 03:33:44PM -0300, Leandro Sales escreveu:
>> Hello folks,
>>   I'm getting this message while using 2.6.27:
>>
>>   Can not create DCCP socket (Protocol driver not attached)
>
> What is the source of such messages? VLC? What? Try strace to see what
> is the syscall that fails just before this message is printed, etc.
>
>>   "uname -a" output:
>>       Linux localhost 2.6.27-rc4-44301-g8269be1 #7 SMP Sun Sep 28 17:02:25
>>       BRT 2008 i686 AMD Athlon(tm) 64 Processor 3000+ AuthenticAMD GNU/Linux
>>
>>   Anything wrong? I tried compile DCCP using both static and module
>> methods and it produces the same effect.
>
> - Arnaldo
>

Hello Arnaldo,
  I'm just running tests with iperf to later use gstreamer plugin that
I developed. Here it is the output provided by strace while executing
iperf. I'm sorry for the long message. In addition, I'm providing
support for a guy from China that wants to use my gstreamer plugin and
he is facing similar problem, getting a permission denied message
while using the plugin, even then he run the plugin as root.

execve("/usr/local/bin/iperf", ["iperf", "-s", "-d", "-l", "1424",
"-i", "1"], [/* 32 vars */]) = 0
brk(0)                                  = 0x8057000
access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY)      = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=79675, ...}) = 0
mmap2(NULL, 79675, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb7fce000
close(3)                                = 0
open("/usr/lib/gcc/i686-pc-linux-gnu/4.1.2/libstdc++.so.6", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\260\30\4\0004\0\0\0"...,
512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=925472, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
0) = 0xb7fcd000
mmap2(NULL, 951972, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
0) = 0xb7ee4000
mmap2(0xb7fc2000, 20480, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xdd) = 0xb7fc2000
mmap2(0xb7fc7000, 22180, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7fc7000
close(3)                                = 0
open("/lib/libm.so.6", O_RDONLY)        = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0p4\0\0004\0\0\0"...,
512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=149256, ...}) = 0
mmap2(NULL, 151680, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
0) = 0xb7ebe000
mmap2(0xb7ee2000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x23) = 0xb7ee2000
close(3)                                = 0
open("/usr/lib/gcc/i686-pc-linux-gnu/4.1.2/libgcc_s.so.1", O_RDONLY) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0\260\30\0\0004\0\0\0"...,
512) = 512
fstat64(3, {st_mode=S_IFREG|0644, st_size=42348, ...}) = 0
mmap2(NULL, 45508, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
0) = 0xb7eb2000
mmap2(0xb7ebc000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x9) = 0xb7ebc000
close(3)                                = 0
open("/lib/libpthread.so.0", O_RDONLY)  = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0
H\0\0004\0\0\0"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=118677, ...}) = 0
mmap2(NULL, 90592, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
0) = 0xb7e9b000
mmap2(0xb7eae000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x13) = 0xb7eae000
mmap2(0xb7eb0000, 4576, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7eb0000
close(3)                                = 0
open("/lib/libc.so.6", O_RDONLY)        = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0@a\1\0004\0\0\0"...,
512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=1237276, ...}) = 0
mmap2(NULL, 1242576, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE,
3, 0) = 0xb7d6b000
mmap2(0xb7e95000, 12288, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x12a) = 0xb7e95000
mmap2(0xb7e98000, 9680, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb7e98000
close(3)                                = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
0) = 0xb7d6a000
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
0) = 0xb7d69000
set_thread_area({entry_number:-1 -> 6, base_addr:0xb7d696d0,
limit:1048575, seg_32bit:1, contents:0, read_exec_only:0,
limit_in_pages:1, seg_not_present:0, useable:1}) = 0
mprotect(0xb7e95000, 8192, PROT_READ)   = 0
mprotect(0xb7eae000, 4096, PROT_READ)   = 0
mprotect(0xb7ebc000, 4096, PROT_READ)   = 0
mprotect(0xb7ee2000, 4096, PROT_READ)   = 0
mprotect(0xb7fc2000, 16384, PROT_READ)  = 0
mprotect(0x8055000, 4096, PROT_READ)    = 0
mprotect(0xb7ffc000, 4096, PROT_READ)   = 0
munmap(0xb7fce000, 79675)               = 0
set_tid_address(0xb7d69718)             = 11228
set_robust_list(0xb7d69720, 0xc)        = 0
rt_sigaction(SIGRTMIN, {0xb7e9f320, [], SA_SIGINFO}, NULL, 8) = 0
rt_sigaction(SIGRT_1, {0xb7e9f3a0, [], SA_RESTART|SA_SIGINFO}, NULL, 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
getrlimit(RLIMIT_STACK, {rlim_cur=8192*1024, rlim_max=RLIM_INFINITY}) = 0
uname({sys="Linux", node="localhost", ...}) = 0
futex(0xb7fc84fc, FUTEX_WAKE, 2147483647) = 0
rt_sigaction(SIGTERM, {0x80509e0, [], SA_RESTART}, {SIG_DFL}, 8) = 0
rt_sigaction(SIGINT, {0x80509e0, [], SA_RESTART}, {SIG_DFL}, 8) = 0
brk(0)                                  = 0x8057000
brk(0x8078000)                          = 0x8078000
mmap2(NULL, 8392704, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
-1, 0) = 0xb7568000
mprotect(0xb7568000, 4096, PROT_NONE)   = 0
clone(child_stack=0xb7d684a4,
flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID,
parent_tidptr=0xb7d68bd8, {entry_number:6, base_addr:0xb7d68b90,
limit:1048575, seg_32bit:1, contents:0, read_exec_only:0,
limit_in_pages:1, seg_not_present:0, useable:1},
child_tidptr=0xb7d68bd8) = 11229
mmap2(NULL, 8392704, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
-1, 0) = 0xb6d67000
mprotect(0xb6d67000, 4096, PROT_NONE)   = 0
clone(child_stack=0xb75674a4,
flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID,
parent_tidptr=0xb7567bd8, {entry_number:6, base_addr:0xb7567b90,
limit:1048575, seg_32bit:1, contents:0, read_exec_only:0,
limit_in_pages:1, seg_not_present:0, useable:1},
child_tidptr=0xb7567bd8) = 11234
futex(0x8056364, FUTEX_WAIT, 1, NULL)   = 0
futex(0x8056390, FUTEX_WAKE, 1)         = 0
futex(0x8056364, FUTEX_WAIT, 3, NULLCan not create DCCP socket
(Protocol driver not attached)
 <unfinished ... exit status 1>

Thanks,
Leandro.
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