powerpc/133383: firefox thr_kill crash with heavy vm load

[Nathan Whitehorn]

The following reply was made to PR powerpc/133383; it has been noted by GNATS.

From: Nathan Whitehorn <nwhitehorn at freebsd.org>
To: Justin Hibbits <jrh29 at alumni.cwru.edu>
Cc: freebsd-gnats-submit at FreeBSD.org
Subject: Re: powerpc/133383: firefox thr_kill crash with heavy vm load
Date: Wed, 10 Nov 2010 20:46:45 -0600

 On 04/04/09 15:02, Justin Hibbits wrote:
 >> Number:         133383
 >> Category:       powerpc
 >> Synopsis:       firefox thr_kill crash with heavy vm load
 >> Confidential:   no
 >> Severity:       non-critical
 >> Priority:       low
 >> Responsible:    freebsd-ppc
 >> State:          open
 >> Quarter:
 >> Keywords:
 >> Date-Required:
 >> Class:          sw-bug
 >> Submitter-Id:   current-users
 >> Arrival-Date:   Sat Apr 04 20:10:01 UTC 2009
 >> Closed-Date:
 >> Last-Modified:
 >> Originator:     Justin Hibbits
 >> Release:        8-CURRENT
 >> Organization:
 >> Environment:
 >>      
 > FreeBSD narn.knownspace 8.0-CURRENT FreeBSD 8.0-CURRENT #14 r189096:189865M: Sun Mar 22 23:09:12 EDT 2009     root at narn.knownspace:/usr/obj/usr/src/sys/NARN powerpc
 >
 >    
 >> Description:
 >>      
 > Under heavy vm load firefox3 crashes in thr_kill.  Output of gdb where:
 >
 > #0  0x23c2c238 in thr_kill () from /lib/libc.so.7
 > #1  0x23bbec54 in pthread_mutex_lock () from /lib/libthr.so.3
 > #2  0x21d2b3c8 in XRE_LockProfileDirectory () from /usr/local/lib/firefox3/libxul.so
 >
 > Crash address in thr_kill is the bnslr immediately following the sc.
 >
 > Hardware:  G4 1.25GHz, 1.25GB RAM
 >
 > Home directory on SATA (possibly relevant).
 >
 > It appears to only occur on powerpc.
 >    
 >> How-To-Repeat:
 >>      
 > Start firefox, with several tabs.  Run programs that perform heavy vm load.  Firefox should crash relatively quickly.
 >    
 Could you check if this is fixed in recent CURRENT? There have been a 
 lot of subtle VM bugs fixed lately.
 -Nathan