PHP 4.0 Bug #5253: apache segfaults in/after call to dlclose

From: mme@myprog.de Operating system: Linux 2.2.12 (RedHat 6.1 vanilla) PHP version: 4.0.0 Release PHP Bug Type: Dynamic loading related Bug description: apache segfaults in/after call to dlclose Using the following configure line: ./configure --prefix=/usr/local/packages/php-4.0RC1 --with-gnu-ld --with-apxs =/usr/local/packages/apache-1.3.12/bin/apxs --with-exec-dir=/usr/local/packages/ php-4.0RC1/bin --with-config-file-path=/usr/local/packages/php-4.0RC1/lib/ --ena ble-sigchild --with-oci8=/mnt/disk/oracle/product/8.1.6 --enable-versioning we set up PHP with Oracle support. Unfortunately, apache decides to bomb afterwards. Using gdb I traced the problem to a place in os.c, within the function as_os_dso_unload. When unloading the php module during startup (don't know exactly why apache does this), dlclose crashes. The exact backtrace at this point is: #0 0x4000a6d1 in _dl_debug_state () at dl-debug.c:56 #1 0x401b14e6 in _dl_close (map=0x8053db8) at dl-close.c:195 #2 0x400d20c0 in dlclose_doit (handle=0x8053db8) at dlclose.c:26 #3 0x4000a3eb in _dl_catch_error (errstring=0x400d3d00, operate=0x400d20a8 <dlclose_doit>, args=0x8053db8) at dl-error.c:141 #4 0x400d2549 in _dlerror_run (operate=0x400d20a8 <dlclose_doit>, args=0x8053db8) at dlerror.c:125 #5 0x400d208e in dlclose (handle=0x8053db8) at dlclose.c:32 #6 0x400426f5 in ap_os_dso_unload (handle=0x8053db8) at os.c:133 #7 0x4001d615 in unload_module (modi=0x804bd54) at mod_so.c:181 #8 0x4001f75e in run_cleanups (c=0x804c4cc) at alloc.c:1706 #9 0x4001dced in ap_clear_pool (a=0x804bb7c) at alloc.c:531 #10 0x400305af in standalone_main (argc=2, argv=0xbffffc44) at http_main.c:4611 #11 0x400310e5 in ap_main (argc=2, argv=0xbffffc44) at http_main.c:4978 #12 0x80487dd in main (argc=2, argv=0xbffffc44) at main/http_main.c:6902 Apache version is 1.3.12. It seems, that the problem is only present when using a php module with Oracle support compiled in. Any ideas?