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From "skrishnamur1@bloomberg.com" <skrishnam...@bloomberg.com>
Subject Apache 2.2 coredumping on Solaris with Subversion 1.6
Date Mon, 09 Nov 2009 15:47:29 GMT
Hi,

I compiled subversion with apache 2.2 on solaris but when I hit the server with an svn request,
the svn modules produce a core dump. Has anyone faced anything similar or have any ideas about
how to fix  or workaround this issue? Any help is appreciated.
Running a pstack on the core file produces:

# /bin/pstack /bb/cores/core.httpd.5718.1257279721
core '/bb/cores/core.httpd.5718.1257279721' of 5718:    /bb/web/apache_2_2/bin/httpd -k start
 fdaa2214 access_checker (36aea0, 36c1a0, 640, fefefeff, 80808080, 1010101) + 44
 00069ef8 ap_run_access_checker (36aea0, 0, 0, 0, 0, 0) + 70
 0006aa58 ap_process_request_internal (36aea0, 0, 0, 0, 0, 0) + 360
 0008a378 ap_process_request (36aea0, 4, 36aea0, 364f60, 0, 0) + 60
 00085c50 ap_process_http_connection (364f60, 364e88, 0, 0, 0, 0) + 88
 0007e9e4 ap_run_process_connection (364f60, 364e88, 364e88, 0, 362f98, 368e60) + 74
 0007f0a8 ap_process_connection (364f60, 364e88, 364e88, 0, 362f98, 368e60) + 98
 00091d3c child_main (0, 91200, 0, fefb8000, fef73700, fee42a00) + 60c
 00091fa8 make_child (109e00, 0, 0, 10, 10b4, fef73b00) + 1b8
 00092070 startup_children (5, 2, 5, 108120, 232d20, 0) + 70
 00092784 ap_mpm_run (108120, 1361d8, 109e00, 109e00, 4, 4) + 31c
 0004eb68 main     (3, ffbff43c, ffbff44c, f3800, fee40100, fee40140) + f08
 0004d198 _start   (0, 0, 0, 0, 0, 0) + 108

Ive seen several other posts with people having the same issue but no real solutions

e.g :

http://forums.sun.com/thread.jspa?threadID=5360736&messageID=10573946#10573946
http://forums.sun.com/thread.jspa?threadID=5360736
http://markmail.org/message/jwhlkgvrnbmgunsd#query:subversion%20crashes%20at%20access_checker+page:1+mid:5cjtts3co442pxxh+state:results
http://subversion.tigris.org/ds/viewMessage.do?dsForumId=462&viewType=browseAll&dsMessageId=588712#<http://subversion.tigris.org/ds/viewMessage.do?dsForumId=462&viewType=browseAll&dsMessageId=588712>

stepping though the core file with dbx gives me :

Running the core files through dbx gives me :

Reading libz.so.1.2.3
Reading libm.so.1
Reading libgcc_s.so.1
Reading mod_dav_svn.so
Reading libsvn_repos-1.so.0.0.0
Reading libsvn_fs-1.so.0.0.0
Reading libsvn_delta-1.so.0.0.0
Reading libsvn_subr-1.so.0.0.0
Reading libexpat.so.0.1.0
Reading libsvn_fs_fs-1.so.0.0.0
Reading libsvn_fs_util-1.so.0.0.0
Reading libsqlite3.so.0.8.6
Reading mod_authz_svn.so
Reading mod_jk.so
t@1 (l@1) program terminated by signal SEGV (Segmentation Fault)
Current function is access_checker
  548     authz_svn_config_rec *conf = ap_get_module_config(r->per_dir_config,


cheers

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