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Posted to bugs@httpd.apache.org by bu...@apache.org on 2002/06/24 10:33:56 UTC
DO NOT REPLY [Bug 10169] New: -
Apache seg faults due to attempt to access out of bounds address from hash_buckets[] array
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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=10169
Apache seg faults due to attempt to access out of bounds address from hash_buckets[] array
Summary: Apache seg faults due to attempt to access out of bounds
address from hash_buckets[] array
Product: Apache httpd-1.3
Version: HEAD
Platform: PC
OS/Version: Linux
Status: NEW
Severity: Normal
Priority: Other
Component: mod_mime
AssignedTo: bugs@httpd.apache.org
ReportedBy: supra@netvision.net.il
CC: supra@netvision.net.il
Here is my compilation procedure of apache-1.3.26:
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gzip -dc openssl-0.9.6d.tar.gz | tar xvf -
cd openssl-0.9.6d
./config --prefix=/usr/local --openssldir=/usr/local/openssl
make
make install
cd ..
gzip -dc apache_1.3.26.tar.gz | tar xvf -
gzip -dc mod_auth_mysql-2.20.tar.gz | tar xvf -
gzip -dc php-4.2.1.tar.gz | tar xvf -
gzip -dc mod_ssl-2.8.9-1.3.26.tar.gz | tar xvf -
cd apache_1.3.26
./configure
cd ../php-4.2.1
./configure --with-mysql --with-apache=../apache_1.3.26 --enable-track-vars
make
make install
cd ../mod_auth_mysql-2.20
./configure --with-mysql=/usr/local/mysql --with-apache=../apache_1.3.26
make install
cd ../mod_ssl-2.8.9-1.3.26
./configure --with-apache=../apache_1.3.26 --with-ssl=../openssl-0.9.6d
cd ../apache_1.3.26
setenv OPTIM " -g -ggdb "
./configure --prefix=/usr/local/apache-ssl --activate-
module=src/modules/php4/libphp4.a --activate-
module=src/modules/auth_mysql/libauth_mysql.a --enable-module=ssl
make
make install
cd ..
cd apache_1.3.26/src
make certificate
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Everything goes ok (except for a rule on alloc.h in
src/modules/auth_mysql/Makefile, that could be resolved by simple comment out)
The problem appears when apache runs. Childs dying when trying to get *.gif
files (for example).
When debugging the apache (with �X) I see that there is a moment when static
hash_buckets[] array from mod_mime.c gets overwritten. Here is an example:
(gdb) p hash_buckets // This is after init_mime()
$4 = {0x82ccb54,
0x82ccbbc,
0x82ccc24,
0x82ccc8c,
0x82cccf4,
0x82ccd5c,
0x82ccdc4,
0x82cce2c,
0x82cce94,
0x82ccefc,
0x82ccf64,
0x82ccfcc,
0x82cd034,
0x82cd09c,
0x82cd104,
0x82cd16c,
0x82cd1d4,
0x82cd23c,
0x82cd2a4,
0x8305eb4,
0x8305f1c,
0x8305f84,
0x8305fec,
0x8306054,
0x83060bc,
0x8306124,
0x830618c,
0x83061f4,
0x830625c,
0x83062c4,
0x830632c,
0x8306394}
(gdb) c
Continuing.
Program received signal SIGSEGV, Segmentation fault.
0x814ae03 in ap_table_get (t=0x6b2b587a, key=0x8309dec "gif") at alloc.c:1479
1473 table_entry *elts = (table_entry *) t->a.elts;
(gdb) where
#0 0x814ae03 in ap_table_get (t=0x2956574b, key=0x8309d94 "gif")
at alloc.c:1473
#1 0x807f5e8 in find_ct (r=0x8307e9c) at mod_mime.c:656
#2 0x814eae4 in run_method (r=0x8307e9c, offset=17, run_all=0)
at http_config.c:369
#3 0x814eb88 in ap_find_types (r=0x8307e9c) at http_config.c:391
#4 0x8163c0d in process_request_internal (r=0x8307e9c) at http_request.c:1297
#5 0x8163ccc in ap_process_request (r=0x8307e9c) at http_request.c:1324
#6 0x815adce in child_main (child_num_arg=0) at http_main.c:4681
#7 0x815af80 in make_child (s=0x82a09ec, slot=0, now=1024906769)
at http_main.c:4805
#8 0x815b0d9 in startup_children (number_to_start=5) at http_main.c:4887
#9 0x815b736 in standalone_main (argc=4, argv=0xbffffa24) at http_main.c:5195
#10 0x815bf13 in main (argc=4, argv=0xbffffa24) at http_main.c:5558
(gdb) p hash_buckets // This is when trying to get .gif file
$5 = {0x0,
0x0,
0x0,
0x0,
0x0,
0x0,
0x0,
0x6b2b587a,
0x62216a5c,
0x0,
0x8261934,
0x0,
0x82cd234,
0x82cd29c,
0x8305eb4,
0x8305f1c,
0x8305f84,
0x8305fec,
0x8306054,
0x83060bc,
0x8306124,
0x830618c,
0x83061f4,
0x830625c,
0x83062c4,
0x830632c,
0x8306394,
0x83063fc,
0x8306464,
0x83064cc,
0x8306534,
0x830659c}
(gdb)
The strange thing is that it doesn't happen all the time. Please help.
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