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Bug 525866 - www-servers/nginx-1.7.6 : segmentation fault with USE=rmtp
Summary: www-servers/nginx-1.7.6 : segmentation fault with USE=rmtp
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: [OLD] Server (show other bugs)
Hardware: AMD64 Linux
: Normal normal (vote)
Assignee: Gentoo Linux bug wranglers
Depends on:
Reported: 2014-10-19 13:59 UTC by andros
Modified: 2014-10-23 08:03 UTC (History)
0 users

See Also:
Package list:
Runtime testing required: ---

emerge --info (file_525866.txt,6.23 KB, text/plain)
2014-10-19 13:59 UTC, andros

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Description andros 2014-10-19 13:59:40 UTC
Created attachment 386942 [details]
emerge --info

Since updating nginx to 1.7.6 I have lots like this in the logs:

kernel: nginx[8079]: segfault at 8 ip 00000030c1bbc960 sp 000003ccdc7ca510 error 4 in nginx[30c1b7e000+134000]
kernel: grsec: From Segmentation fault occurred at 0000000000000008 in /usr/sbin/nginx[nginx:8079] uid/euid:102/102 gid/egid:248/248, parent /usr/sbin/nginx[nginx:6725] uid/euid:0/0 gid/egid:0/0
kernel: grsec: From bruteforce prevention initiated for the next 30 minutes or until service restarted, stalling each fork 30 seconds.  Please investigate the crash report for /usr/sbin/nginx[nginx:8079]

This happens immediately after starting the daemon!

Downgraded to version 1.7.5, same results.

Downgraded to version 1.7.4 and all works fine.
Comment 1 andros 2014-10-19 14:04:13 UTC
This happens with the standard nginx config too!
And I have just tested it on a desktop system, same result,
Endlessly in the log:
kernel: nginx[22573]: segfault at 8 ip 0000000000421224 sp 00007fffb1120060 error 4 in nginx[400000+cc000]
Comment 2 Jeroen Roovers (RETIRED) gentoo-dev 2014-10-19 14:13:57 UTC
Please attach a full gdb backtrace of the segfaulting command.
Comment 3 Jeroen Roovers (RETIRED) gentoo-dev 2014-10-19 14:14:34 UTC
Also, post your `emerge -vpq www-servers/nginx' output in a comment.
Comment 4 andros 2014-10-19 14:38:35 UTC
From my Desktop system:

emerge -vpq www-servers/nginx                                                                                                                                                                                                          [16:09:23]
[ebuild   R   ] www-servers/nginx-1.7.6  USE="aio http http-cache ipv6 pcre rtmp ssl vim-syntax -debug -libatomic -luajit -pcre-jit (-selinux)" NGINX_MODULES_HTTP="access auth_basic autoindex browser charset empty_gif fastcgi geo gzip limit_conn limit_req map memcached proxy referer rewrite scgi split_clients ssi upstream_ip_hash userid uwsgi -addition -ajp -auth_pam -auth_request -cache_purge -dav -dav_ext -degradation -echo -fancyindex -flv -geoip -gunzip -gzip_static -headers_more -image_filter -lua -metrics -mogilefs -mp4 -naxsi -perl -push_stream -random_index -realip -secure_link -security -slowfs_cache -spdy -sticky -stub_status -sub -upload_progress -upstream_check -xslt" NGINX_MODULES_MAIL="-imap -pop3 -smtp" 

I have not build my system with debugging symbols. Go, do it your self!
Comment 5 Agostino Sarubbo gentoo-dev 2014-10-19 17:43:18 UTC
it works for me in production wit 4days of uptime.
Comment 6 Agostino Sarubbo gentoo-dev 2014-10-19 17:44:33 UTC
(In reply to andros from comment #4)
> I have not build my system with debugging symbols. Go, do it your self!

If we are unable to reproduce the problem, _you_ need to do it. Please compile it with -ggdb and use gdb for start it.
Comment 7 andros 2014-10-19 18:00:24 UTC
What I could find is that it works when use flag > rtmp < is removed!

I could repeat this on a third system now, enable rtmp use flag and nginx is broken!

I don't understand why there is only this version (1.7.6) in portage. It's make no sense to say to the user debug your self, but have only one version to choose!