[OpenSIPS-Devel] OpenSIPS Crash

Dan Pascu dan at ag-projects.com
Thu Jun 6 10:01:35 EDT 2019


Looks like buffer overflow. That c variable in the first frame should be a memory address, but instead it contains "lo EYB", which I guess is "BYE ol" on little endian machines. Looks like some parsed part of the message spilled over and overwrote memory pointers.

On 5 Jun 2019, at 22:02, Ben Newlin wrote:

> We have had another crash today.
>  
> Backtrace is here: https://pastebin.com/q4RQC7kS
>  
> I found this in the log at the time of the crash:
>  
> Jun  5 17:54:10 [4978] CRITICAL:core:sig_usr: segfault in process pid: 4978, id: 8
>  
>  
> Please let me know if any further information can be useful.
>  
> Ben Newlin
>  
> From: Devel <devel-bounces at lists.opensips.org> on behalf of Ben Newlin <Ben.Newlin at genesys.com>
> Reply-To: OpenSIPS devel mailling list <devel at lists.opensips.org>
> Date: Friday, May 10, 2019 at 6:31 PM
> To: OpenSIPS devel mailling list <devel at lists.opensips.org>
> Subject: Re: [OpenSIPS-Devel] OpenSIPS Crash
>  
> I found this in the log at the time of the crash:
>  
> kernel: opensips[5003]: segfault at 30 ip 00007fbd4c8f59d0 sp 00007ffcaa850c80 error 6 in tm.so[7fbd4c887000+8e000]
>  
> Ben Newlin
>  
> From: Devel <devel-bounces at lists.opensips.org> on behalf of Ben Newlin <Ben.Newlin at genesys.com>
> Reply-To: OpenSIPS devel mailling list <devel at lists.opensips.org>
> Date: Friday, May 10, 2019 at 5:44 PM
> To: OpenSIPS devel mailling list <devel at lists.opensips.org>
> Subject: [OpenSIPS-Devel] OpenSIPS Crash
>  
> Hello,
>  
> We had a crash today of our OpenSIPS instance.
>  
> Backtrace is here: https://pastebin.com/QbRJimwx
>  
> # opensips -V
> version: opensips 2.4.5 (x86_64/linux)
> flags: STATS: On, DISABLE_NAGLE, USE_MCAST, SHM_MMAP, PKG_MALLOC, F_MALLOC, FAST_LOCK-ADAPTIVE_WAIT
> ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144, MAX_LISTEN 16, MAX_URI_SIZE 1024, BUF_SIZE 65535
> poll method support: poll, epoll, sigio_rt, select.
> git revision: d025b4f61
> main.c compiled on 20:58:31 May  9 2019 with gcc 7
>  
> Ben Newlin
> _______________________________________________
> Devel mailing list
> Devel at lists.opensips.org
> http://lists.opensips.org/cgi-bin/mailman/listinfo/devel


--
Dan







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