[nanomsg] Re: core dump from "Cannot assign requested address" error
- From: Martin Sustrik <sustrik@xxxxxxxxxx>
- To: nanomsg@xxxxxxxxxxxxx
- Date: Mon, 10 Nov 2014 07:33:36 +0100
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Can you try with the current trunk?
As far as I can say the problem was fixed: If you try to bind to a
non-existent interface/address it will periodically re-try and
eventually it will succeed when the interface becomes available.
Martin
On 10/11/14 07:14, Matthew Hall wrote:
> Hi,
>
> I forgot to mention. The code which triggered it blew up when
> NN_IPV4ONLY was set to zero.
>
> To start with, whether to abort and core dump seems like an
> application decision, not a library one. For example, if I use
> jnano in a Java servlet container, I wouldn't want one mistake in
> one app to force-kill the entire container, unless it's a real bad
> mistake, or some special flags are enabled to do it on purpose for
> bug-fixing.
>
> Also, it shouldn't core-dump just because of something minor like
> EAFNOTSUPP or something similar.
>
> Matthew.
>
> On Sun, Nov 09, 2014 at 08:53:46PM -0800, Matthew Hall wrote:
>> Hi Team,
>>
>> I captured this abort-triggered segfault during recent testing of
>> my nanomsg based app stack. I saw it using the Perl bindings but
>> the abort() in question seems to be perl-independent as far as I
>> can see.
>>
>> To me it doesn't seem like a good thing to core-dump the
>> application in this case unless there's a really good reason for
>> it, and if there is, it would be nice if the error message
>> explained more about why.
>>
>> Can anyone help me understand what happened in the output below?
>>
>> Thanks, Matthew.
>>
>> Cannot assign requested address [99]
>> (src/transports/tcp/btcp.c:378)
>>
>> Program received signal SIGABRT, Aborted. 0x00007ffff76c1bb9 in
>> __GI_raise (sig=sig@entry=6) at
>> ../nptl/sysdeps/unix/sysv/linux/raise.c:56 56
>> ../nptl/sysdeps/unix/sysv/linux/raise.c: No such file or
>> directory. (gdb) bt #0 0x00007ffff76c1bb9 in __GI_raise
>> (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
>> #1 0x00007ffff76c4fc8 in __GI_abort () at abort.c:89 #2
>> 0x00007ffff5ac1309 in nn_err_abort () at src/utils/err.c:33 #3
>> 0x00007ffff5ade088 in nn_btcp_start_listening (self=0x62d2f0) at
>> src/transports/tcp/btcp.c:378 #4 0x00007ffff5add30d in
>> nn_btcp_handler (self=0x62d2f0, src=-2, type=-2, srcptr=0x0) at
>> src/transports/tcp/btcp.c:262 #5 0x00007ffff5ab915a in
>> nn_fsm_start (self=0x62d2f0) at src/aio/fsm.c:113 #6
>> 0x00007ffff5add234 in nn_btcp_create (hint=0x971ef0,
>> epbase=0x971f50) at src/transports/tcp/btcp.c:153 #7
>> 0x00007ffff5ae185d in nn_tcp_bind (hint=0x971ef0,
>> epbase=0x971f50) at src/transports/tcp/tcp.c:85 #8
>> 0x00007ffff5aafb45 in nn_ep_init (self=0x971ef0, src=1,
>> sock=0x971950, eid=1, transport=0x7ffff5cef810 <nn_tcp_vfptr>,
>> bind=1, addr=0x61d876 "[192.168.1.77]:31337") at
>> src/core/ep.c:70 #9 0x00007ffff5ab6e19 in nn_sock_add_ep
>> (self=0x971950, transport=0x7ffff5cef810 <nn_tcp_vfptr>, bind=1,
>> addr=0x61d876 "[192.168.1.77]:31337") at src/core/sock.c:479 #10
>> 0x00007ffff5ab1c1e in nn_global_create_ep (s=0, addr=0x61d876
>> "[192.168.1.77]:31337", bind=1) at src/core/global.c:1112 #11
>> 0x00007ffff5ab19d6 in nn_bind (s=0, addr=0x61d870
>> "tcp://[192.168.1.77]:31337") at src/core/global.c:611 #12
>> 0x00007ffff5cf278a in XS_NanoMsg__Raw_nn_bind (my_perl=<optimized
>> out>, cv=<optimized out>) at Raw.c:500 #13 0x00007ffff7b0a866 in
>> Perl_pp_entersub () from /usr/lib/libperl.so.5.18 #14
>> 0x00007ffff7b02e86 in Perl_runops_standard () from
>> /usr/lib/libperl.so.5.18 #15 0x00007ffff7a9b844 in perl_run ()
>> from /usr/lib/libperl.so.5.18 #16 0x0000000000400dd9 in main ()
>> (gdb)
>>
>
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