https://issues.apache.org/bugzilla/show_bug.cgi?id=55914
Bug ID: 55914
Summary: child exit segmentation fault after apache graceful
Product: Apache httpd-2
Version: 2.4.7
Hardware: Sun
OS: Solaris
Status: NEW
Severity: regression
Priority: P2
Component: All
Assignee: [email protected]
Reporter: [email protected]
Created attachment 31138
--> https://issues.apache.org/bugzilla/attachment.cgi?id=31138&action=edit
result of pstack on core file generated
hello,
i'm working on Solaris 10 and i've upgraded my apache from 2.2.23 to 2.4.7.
Since then, i have children crashing after a graceful restart. It does not
appear after each graceful restart but sometimes. When it occurs, each time i
have a request in my access log, a child is crashing. Doing a normal restart is
never causing this problem.
Here is a extract of the error log (with LogLevel warn):
[Thu Dec 19 15:51:34.905734 2013] [mpm_worker:notice] [pid 24913:tid 1]
AH00297: SIGUSR1 received. Doing graceful restart
[Thu Dec 19 15:51:36.050587 2013] [mpm_worker:notice] [pid 24913:tid 1]
AH00292: Apache/2.4.7 (Unix) mod_auth_kerb/5.4 OpenSSL/0.9.8k configured --
resuming normal operations
[Thu Dec 19 15:51:36.050644 2013] [core:notice] [pid 24913:tid 1] AH00094:
Command line: '/local/products/sslproxy/bin/httpd'
[Thu Dec 19 15:51:36.050729 2013] [mpm_worker:warn] [pid 24913:tid 1] AH00291:
long lost child came home! (pid 24915)
[Thu Dec 19 15:52:29.076927 2013] [core:notice] [pid 24913:tid 1] AH00052:
child pid 3773 exit signal Segmentation fault (11)
[Thu Dec 19 15:53:29.093903 2013] [core:notice] [pid 24913:tid 1] AH00052:
child pid 3771 exit signal Segmentation fault (11)
[Thu Dec 19 15:54:30.111803 2013] [core:notice] [pid 24913:tid 1] AH00052:
child pid 5049 exit signal Segmentation fault (11)
[Thu Dec 19 15:55:30.129161 2013] [core:notice] [pid 24913:tid 1] AH00052:
child pid 5844 exit signal Segmentation fault (11)
i put the LogLevel to trace8 level to see what's happening just before the
crash:
[Thu Dec 19 18:01:07.144950 2013] [core:trace6] [pid 12540:tid 27]
core_filters.c(527): [client 136.10.10.10:38372] core_output_filter: flushing
because of FLUSH bucket
[Thu Dec 19 18:01:07.147988 2013] [core:trace6] [pid 12540:tid 27]
core_filters.c(527): [client 136.10.10.10:38372] core_output_filter: flushing
because of FLUSH bucket
[Thu Dec 19 18:01:07.164183 2013] [proxy:debug] [pid 12540:tid 27]
proxy_util.c(2035): AH00943: http: has released connection for
(eur-lex.europa.eu)
[Thu Dec 19 18:01:07.164434 2013] [proxy_http:trace2] [pid 12540:tid 27]
mod_proxy_http.c(1793): [client 136.10.10.10:38372] end body send
[Thu Dec 19 18:01:07.200666 2013] [core:notice] [pid 24913:tid 1] AH00051:
child pid 12484 exit signal Segmentation fault (11), possible coredump in
/local/products/sslproxy
[Thu Dec 19 18:01:07.200864 2013] [core:trace4] [pid 24913:tid 1]
mpm_common.c(530): mpm child 12484 (gen 3/slot 1) exited
[Thu Dec 19 18:01:08.209248 2013] [core:trace4] [pid 24913:tid 1]
mpm_common.c(530): mpm child 12545 (gen 3/slot 1) started
And i did a pstack on the core file generated. I will put it in attachment.
Despite the traces put in place, i do not know what is causing this problem.
Can
you help me on this topic? I have to find the root cause otherwise i will have
to go back to apache 2.2.
Thanks for your help .
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