From:             
Operating system: Debian Squeeze
PHP version:      5.3.9
Package:          FPM related
Bug Type:         Bug
Bug description:Graceful Restart (USR2) isn't very graceful

Description:
------------
I just compiled a new PHP+APC with the CVE-2012-0830 fix. It looks like
all/some of the the active requests died. I had the same problem when
upgrading to 5.3.8 and 5.3.9 too.

# cat /var/log/nginx/error.log
 *empty*
# cat /var/run/php-fpm.pid
2161
# ps aux | fgrep -i 2161
root      2161  0.1  0.2 123692  4520 ?        Ss   06:28   0:00 php-fpm:
master process (/opt/php/etc/php-fpm.conf)
# kill -USR2 2161
# cat /var/log/nginx/error.log
2012/02/02 21:08:26 [error] 25004#0: *7381002 recv() failed (104:
Connection reset by peer) while reading response header from upstream,
client: XXX
2012/02/02 21:08:26 [error] 25004#0: *7381001 recv() failed (104:
Connection reset by peer) while reading response header from upstream,
client: XXX
2012/02/02 21:08:26 [error] 25004#0: *7372696 recv() failed (104:
Connection reset by peer) while reading response header from upstream,
client: XXX
2012/02/02 21:08:26 [error] 25004#0: *7381238 recv() failed (104:
Connection reset by peer) while reading response header from upstream,
client: XXX
2012/02/02 21:08:26 [error] 25004#0: *7374985 recv() failed (104:
Connection reset by peer) while reading response header from upstream,
client: XXX
2012/02/02 21:08:26 [error] 25004#0: *7369723 recv() failed (104:
Connection reset by peer) while reading response header from upstream,
client: XXX
2012/02/02 21:08:26 [error] 25004#0: *7360478 recv() failed (104:
Connection reset by peer) while reading response header from upstream,
client: XXX
2012/02/02 21:08:26 [error] 25004#0: *7371999 recv() failed (104:
Connection reset by peer) while reading response header from upstream,
client: XXX
2012/02/02 21:08:26 [error] 25004#0: *7375111 recv() failed (104:
Connection reset by peer) while reading response header from upstream,
client: XXX
2012/02/02 21:08:26 [error] 25004#0: *7381000 readv() failed (104:
Connection reset by peer) while reading upstream, client: xx.xx.xx.xx,
server: XXX

This gives 502 Bad Gateway on the client.


-- 
Edit bug report at https://bugs.php.net/bug.php?id=60961&edit=1
-- 
Try a snapshot (PHP 5.4):            
https://bugs.php.net/fix.php?id=60961&r=trysnapshot54
Try a snapshot (PHP 5.3):            
https://bugs.php.net/fix.php?id=60961&r=trysnapshot53
Try a snapshot (trunk):              
https://bugs.php.net/fix.php?id=60961&r=trysnapshottrunk
Fixed in SVN:                        
https://bugs.php.net/fix.php?id=60961&r=fixed
Fixed in SVN and need be documented: 
https://bugs.php.net/fix.php?id=60961&r=needdocs
Fixed in release:                    
https://bugs.php.net/fix.php?id=60961&r=alreadyfixed
Need backtrace:                      
https://bugs.php.net/fix.php?id=60961&r=needtrace
Need Reproduce Script:               
https://bugs.php.net/fix.php?id=60961&r=needscript
Try newer version:                   
https://bugs.php.net/fix.php?id=60961&r=oldversion
Not developer issue:                 
https://bugs.php.net/fix.php?id=60961&r=support
Expected behavior:                   
https://bugs.php.net/fix.php?id=60961&r=notwrong
Not enough info:                     
https://bugs.php.net/fix.php?id=60961&r=notenoughinfo
Submitted twice:                     
https://bugs.php.net/fix.php?id=60961&r=submittedtwice
register_globals:                    
https://bugs.php.net/fix.php?id=60961&r=globals
PHP 4 support discontinued:          
https://bugs.php.net/fix.php?id=60961&r=php4
Daylight Savings:                    https://bugs.php.net/fix.php?id=60961&r=dst
IIS Stability:                       
https://bugs.php.net/fix.php?id=60961&r=isapi
Install GNU Sed:                     
https://bugs.php.net/fix.php?id=60961&r=gnused
Floating point limitations:          
https://bugs.php.net/fix.php?id=60961&r=float
No Zend Extensions:                  
https://bugs.php.net/fix.php?id=60961&r=nozend
MySQL Configuration Error:           
https://bugs.php.net/fix.php?id=60961&r=mysqlcfg

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