Package: apache2-mpm-worker Version: 2.2.22-13 Severity: normal File: /usr/sbin/apache2 Dear maintainer, I recently noticed that long-running HTTP connections to my webserver are closed at random points in time, and whenever such an event occurs, a corresponding "child N exit Segmentation fault" message appears in /var/log/apache2/errors.log. Here's an excerpt of errors.log: [Mon Jan 20 11:24:54 2014] [notice] child pid 24196 exit signal Segmentation fault (11) At the exact same time, a connection to the server opened via proxytunnel -v -B -p $host:443 -d <MAGIC_IP>:2222 was closed. I was monitoring the connection via tcpdump: 11:24:45.094427 IP CLIENT.39172 > SERVER.443: Flags [.], ack 5889, win 212, options [nop,nop,TS val 3379557 ecr 168685518], length 0 11:24:54.271639 IP SERVER.443 > CLIENT.39172: Flags [F.], seq 5889, ack 5680, win 444, options [nop,nop,TS val 168687824 ecr 3379557], length 0 11:24:54.322112 IP CLIENT.39172 > SERVER.443: Flags [F.], seq 5680, ack 5890, win 212, options [nop,nop,TS val 3381864 ecr 168687824], length 0 11:24:54.325877 IP SERVER.443 > CLIENT.39172: Flags [.], ack 5681, win 444, options [nop,nop,TS val 168687837 ecr 3381864], length 0 The connection was processed via mod_proxy_connect. However, even when no connections via mod_proxy are active, I see lots of these Segmenation fault messages, so I currently assume that the problem is not in mod_proxy but somewhere deeper in apache's internals. For reference, this is the mod_proxy configuration that I'm using: --8<-- ProxyRequests on AllowCONNECT 2222 ProxyVia on <Proxy *> Order deny,allow Deny from all </proxy> SetEnvIf User-Agent ^magic_string_blablabla SSHTUNNEL_AUTHORIZED <Proxy MAGIC_IP> Order deny,allow Deny from all Allow from env=SSHTUNNEL_AUTHORIZED </Proxy> --8<-- Looking at my errors.log, I see 10 "Segmentation fault" messages for Jan/20, while in the same time frame access.log lists 700 and ssl_access.log lists 30 requests. Maybe the problem is related to this bug [1]? cheers, David [1] https://issues.apache.org/bugzilla/show_bug.cgi?id=50335 -- System Information: Debian Release: 7.3 APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'stable') Architecture: mipsel (mips64) Kernel: Linux 2.6.39.4-dk1-fix1 Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Versions of packages apache2-mpm-worker depends on: ii apache2.2-bin 2.2.22-13 ii apache2.2-common 2.2.22-13 apache2-mpm-worker recommends no packages. apache2-mpm-worker suggests no packages. -- no debconf information -- GnuPG public key: http://dvdkhlng.users.sourceforge.net/dk2.gpg Fingerprint: B63B 6AF2 4EEB F033 46F7 7F1D 935E 6F08 E457 205F
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