Package: apache2 User: [EMAIL PROTECTED] Usertags: origin-ubuntu hardy ubuntu-patch Version: 2.2.8-4 Severity: important Tags: patch
When torture testing an apache2-mpm-worker I get numerous segmentation faults and sigbus errors: [Tue May 27 14:16:40 2008] [notice] child pid 8848 exit signal Segmentation fault (11) [Tue May 27 14:18:35 2008] [notice] child pid 9075 exit signal Segmentation fault (11) [Tue May 27 14:19:37 2008] [notice] child pid 9159 exit signal Segmentation fault (11) [Tue May 27 14:19:37 2008] [notice] child pid 9215 exit signal Segmentation fault (11) [Tue May 27 14:20:19 2008] [notice] child pid 9495 exit signal Segmentation fault (11) [Tue May 27 14:22:52 2008] [notice] child pid 9523 exit signal Segmentation fault (11) See: * https://bugs.launchpad.net/ubuntu/+source/apache2/+bug/235294 Fix is commited in the apache cvs and in Ubuntu, we've applied the attached patch to achieve the following: * debian/patches/100_mpm_wokers_crash.dpatch - Fix for segmentation fault with mpm-worker is under load. Backported from http://svn.apache.org/viewvc?view=rev&revision=631362. (LP: #235294) We thought you might be interested in doing the same. -- System Information: Debian Release: lenny/sid APT prefers hardy-updates APT policy: (500, 'hardy-updates'), (500, 'hardy-security'), (500, 'hardy') Architecture: amd64 (x86_64) Kernel: Linux 2.6.24-18-generic (SMP w/2 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash -- :-Dustin Dustin Kirkland Ubuntu Server Developer Canonical, LTD [EMAIL PROTECTED] GPG: 1024D/83A61194
diff -u apache2-2.2.8/debian/patches/00list apache2-2.2.8/debian/patches/00list
--- apache2-2.2.8/debian/patches/00list
+++ apache2-2.2.8/debian/patches/00list
@@ -24,0 +25 @@
+100_mpm_wokers_crash.dpatch
only in patch2:
unchanged:
--- apache2-2.2.8.orig/debian/patches/100_mpm_wokers_crash.dpatch
+++ apache2-2.2.8/debian/patches/100_mpm_wokers_crash.dpatch
@@ -0,0 +1,46 @@
+#! /bin/sh /usr/share/dpatch/dpatch-run
+
[EMAIL PROTECTED]@
+diff -Naur httpd-2.2.8.orig/server/mpm/experimental/event/fdqueue.c httpd-2.2.8/server/mpm/experimental/event/fdqueue.c
+--- httpd-2.2.8.orig/server/mpm/experimental/event/fdqueue.c 2007-07-25 09:13:49.000000000 -0400
++++ httpd-2.2.8/server/mpm/experimental/event/fdqueue.c 2008-05-20 03:18:03.000000000 -0400
+@@ -194,10 +194,16 @@
+ (*new_recycle));
+ new_recycle->pool = pool_to_recycle;
+ for (;;) {
+- new_recycle->next = queue_info->recycled_pools;
++ /*
++ * Save queue_info->recycled_pool in local varaible next because
++ * new_recycle->next can be changed after apr_atomic_casptr
++ * function call. For gory details see PR 4402.
++ */
++ struct recycled_pool *next = queue_info->recycled_pools;
++ new_recycle->next = next;
+ if (apr_atomic_casptr
+ ((volatile void **) &(queue_info->recycled_pools),
+- new_recycle, new_recycle->next) == new_recycle->next) {
++ new_recycle, next) == next) {
+ break;
+ }
+ }
+diff -Naur httpd-2.2.8.orig/server/mpm/worker/fdqueue.c httpd-2.2.8/server/mpm/worker/fdqueue.c
+--- httpd-2.2.8.orig/server/mpm/worker/fdqueue.c 2007-07-25 09:13:49.000000000 -0400
++++ httpd-2.2.8/server/mpm/worker/fdqueue.c 2008-05-20 03:12:43.000000000 -0400
+@@ -94,10 +94,14 @@
+ sizeof(*new_recycle));
+ new_recycle->pool = pool_to_recycle;
+ for (;;) {
+- new_recycle->next = queue_info->recycled_pools;
++ /* Save queue_info->recycled_pool in local variable next because
++ * new_recycle->next can be changed after apr_atomic_casptr
++ * function call. For gory details see PR 44402.
++ */
++ struct recycled_pool *next = queue_info->recycled_pools;
++ new_recycle->next = next;
+ if (apr_atomic_casptr((volatile void**)&(queue_info->recycled_pools),
+- new_recycle, new_recycle->next) ==
+- new_recycle->next) {
++ new_recycle, next) == next) {
+ break;
+ }
+ }
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