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From Stefan Eissing <stefan.eiss...@greenbytes.de>
Subject Re: [users@httpd] Crash in http/2
Date Tue, 20 Oct 2015 13:21:48 GMT
This looks like a bug that was fixed shortly after the 2.4.17 release.

When the client resets a HTTP/2 stream (request) before the server
has started submitting a response, mod_http2 trips and this may
lead to a crash later, as you observed.

See http://svn.apache.org/viewvc?view=revision&revision=r1708124

In case you build your server yourself, I can setup a 2.4.x branch
with changes applied...

//Stefan

> Am 20.10.2015 um 15:12 schrieb Zoltán Halassy <cf0hay@gmail.com>:
> 
> Hello!
> 
> Using 2.4.17.
> 
> There seem to be an issue with http/2:
> 
> I have these in the vhost error log:
> 
> [Tue Oct 20 12:00:35.797584 2015] [http2:warn] [pid 21608:tid
> 113684011906816] (70015)Could not find specified socket in poll list.:
> [client x.x.x.x:65519] AH02953: h2_mplx(139): stream for response 125
> [Tue Oct 20 14:00:17.944319 2015] [http2:warn] [pid 789:tid
> 113683985704704] (70015)Could not find specified socket in poll list.:
> [client x.x.x.x:63189] AH02953: h2_mplx(142): stream for response 13
> [Tue Oct 20 14:15:27.921364 2015] [http2:warn] [pid 21476:tid
> 113683995473664] (70015)Could not find specified socket in poll list.:
> [client x.x.x.x:49590] AH02953: h2_mplx(77): stream for response 1345
> 
> Global error log:
> 
> [Tue Oct 20 12:04:25.248395 2015] [core:notice] [pid 21460:tid
> 113684566398848] AH00052: child pid 21608 exit signal Segmentation
> fault (11)
> [Tue Oct 20 14:02:35.184365 2015] [core:notice] [pid 21460:tid
> 113684566398848] AH00052: child pid 789 exit signal Segmentation fault
> (11)
> [Tue Oct 20 14:19:59.604556 2015] [core:notice] [pid 21460:tid
> 113684566398848] AH00052: child pid 21476 exit signal Segmentation
> fault (11)
> 
> Check the timestamps. It seems after the warning is logged, a few
> minutes later the process crashes.
> 
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