bug report

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To: gnats@...
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 >Submitter-Id:  net
 >Originator:    Daniel Polak
 >Organization:
net
 >Synopsis:      web server running Gallery (using httpd and php5)
crashes several times a day
 >Severity:      critical
 >Priority:      medium
 >Category:      kernel
 >Class:         sw-bug
 >Release:       4.3 stable
 >Environment:
        <machine, os, target, libraries (multiple lines)>
        System      : OpenBSD 4.3
        Details     : OpenBSD 4.3-stable (GENERIC) #4: Wed Jul  2
10:58:49 CEST 2008
                         
root@...:/usr/src/sys/arch/i386/compile/GENERIC

        Architecture: OpenBSD.i386
        Machine     : i386
 >Description:
        <precise description of the problem (multiple lines)>
        About a month ago a web server that provides a PHP based photo
gallery started crashing
        multiple times per day.
        At that time it was running OpenBSD 4.1.
        I installed everything from scratch on a different machine with
OpenBSD 4.3 (updated to stable)
        and copied the data from the old machine. The problem keeps
occuring and the Gallery application
        is becoming unusable as a result.
        The Gallery software is from http://gallery.menalto.com/

        The following packages are installed to support the Gallery
software:
        gettext-0.16.1      GNU gettext
        jasper-1.900.1      reference implementation of JPEG-2000
        jbigkit-1.6p1       lossless image compression library
        jhead-2.6           Exif Jpeg camera setting parser and
thumbnail remover
        jpeg-6bp3           IJG's JPEG compression utilities
        libiconv-1.9.2p5    character set conversion library
        libxml-2.6.30       XML parsing library
        mysql-client-5.0.51a multithreaded SQL database (client)
        mysql-server-5.0.51a multithreaded SQL database (server)
        netpbm-10.26.46     toolkit for converting images between
different formats
        p5-DBD-mysql-4.005  MySQL drivers for the Perl DBI
        p5-DBI-1.59         unified perl interface for database access
        p5-Net-Daemon-0.43  extension for portable daemons
        p5-PlRPC-0.2018p0   module for writing rpc servers and clients
        php5-core-5.2.5p2   server-side HTML-embedded scripting language
        php5-mysql-5.2.5    mysql database access extensions for php5
        png-1.2.22          library for manipulating PNG images
        tiff-3.8.2p0        tools and library routines for working with
TIFF images

# uvm_fault(0xd07e9980, 0x1000d000, 0, 1) -> e
kernel: page fault trap, code=0
Stopped at      pmap_alloc_pv+0x46:     movl    0(%ebx),%eax
ddb> trace
pmap_alloc_pv(d0809260,0,d95b1cec,d0447a99) at pmap_alloc_pv+0x46
pmap_enter(d0809260,d4f89000,af44000,1,11) at pmap_enter+0x339
uvm_pagermapin(d95b1ea4,1,0,1,d0202251) at uvm_pagermapin+0x110
uvm_swap_get(d95b1ea4,815,1,4,815) at uvm_swap_get+0xcf
uvm_pager_put(0,d0c2a7c0,d95b1e98,d95b1e9c,90) at uvm_pager_put+0x1d1
uvm_aiodone_daemon(d0803a08,12e2b,d95b1f6c,d044f2e5) at
uvm_aiodone_daemon+0x44
1
uvm_aiodone_daemon(c972,64b9,d092ceb8,d6667c18,d044e7f8) at
uvm_aiodone_daemon+
0x9f6
uvm_pageout(d6667c18) at uvm_pageout+0xae
Bad frame pointer: 0xd092ceb8
ddb> ps
   PID   PPID   PGRP    UID  S       FLAGS  WAIT          COMMAND
 30848   9884   9884     67  3       0x180  netcon        httpd
  3531   9884   9884     67  3       0x180  netcon        httpd
  7432   9884   9884     67  3       0x180  netcon        httpd
 26653   9884   9884     67  3       0x100  biowait       httpd
  4049   9884   9884     67  3       0x100  biowait       httpd
 27911   9884   9884     67  2       0x100                httpd
 13493   9884   9884     67  3       0x100  biowait       httpd
 18003   9884   9884     67  2       0x100                httpd
 30944   9884   9884     67  3       0x100  biowait       httpd
 13923   9884   9884     67  2       0x100                httpd
 29308   9884   9884     67  3       0x100  biowait       httpd
 19822   9884   9884     67  3       0x180  lockf         httpd
 10177   9884   9884     67  3       0x180  lockf         httpd
 24966   9884   9884     67  3       0x180  lockf         httpd
   153   9884   9884     67  3       0x100  biowait       httpd
 26105   9884   9884     67  3       0x100  biowait       httpd
 24618   9884   9884     67  3       0x100  biowait       httpd
 20807   9884   9884     67  2       0x100                httpd
 23931   9884   9884     67  3       0x100  biowait       httpd
  7828      1   7828      0  3      0x4082  ttyin         ksh
 24771      1  24771      0  3      0x4082  ttyin         getty
 27908      1  27908      0  3      0x4082  ttyin         getty
 14189      1  14189      0  3      0x4082  ttyin         getty
  1508      1   1508      0  3      0x4082  ttyin         getty
  9152      1   9152      0  3      0x4082  ttyin         getty
 16294      1  16294      0  3        0x80  select        cron
 17553      1  17553      0  3        0x80  select        sshd
 22309   9884   9884     67  3       0x100  biowait       httpd
 23716   9884   9884     67  3       0x100  biowait       httpd
 12991   9884   9884     67  3       0x100  biowait       httpd
 14180   9884   9884     67  3       0x100  biowait       httpd
 13365   9884   9884     67  3       0x100  biowait       httpd
 27347      1  27347     71  3       0x180  kqread        ftp-proxy
  9884      1   9884     67  3       0x180  select        httpd
 29185      1  29185      0  3        0x80  poll          ntpd
   762      1    762     83  3       0x180  poll          ntpd
 16217  23190  23190     74  3       0x180  bpf           pflogd
 23190      1  23190      0  3        0x80  netio         pflogd
  5088   3917   3917     73  2       0x180                syslogd
  3917      1   3917      0  3        0x88  netio         syslogd
    15      0      0      0  3    0x100200  bored         crypto
    14      0      0      0  2    0x100200                aiodoned
    13      0      0      0  3    0x100200  syncer        update
    12      0      0      0  3    0x100200  cleaner       cleaner
    11      0      0      0  3    0x100200  reaper        reaper
*   10      0      0      0  7    0x100200                pagedaemon
     9      0      0      0  3    0x100200  pftm          pfpurge
     8      0      0      0  3    0x100200  usbevt        usb1
     7      0      0      0  3    0x100200  usbtsk        usbtask
     6      0      0      0  3    0x100200  usbevt        usb0
     5      0      0      0  3    0x100200  apmev         apm0
     4      0      0      0  3    0x100200  bored         syswq
     3      0      0      0  3    0x100200                idle0
     2      0      0      0  3    0x100200  kmalloc       kmthread
     1      0      1      0  3      0x4080  wait          init
     0     -1      0      0  3     0x80200  scheduler     swapper

 >How-To-Repeat:
        <code/input/activities to reproduce the problem (multiple lines)>
        Problem occurs with current contents of photo gallery but the
application has run properly for several years.
        I have no idea what sequence of events leads to the crash.
 >Fix:
        <how to correct or work around the problem, if known (multiple
lines)>