----- "Howard Chu" <[email protected]> wrote: > Howard Chu wrote: > > Tyler Gates wrote: > >> After applying the patches for ITS #6848 and ITS #6898 I still get > crashes. > >> Here's the latest: > > ??? neither #6848 nor #6898 are relevant to pcache.
I figured probably not but thought it may be important to know in terms as this is not just a straight 2.4.25 build... > > I think you should try the RE24 branch at this point, as a number of > other > pcache-related fixes have been merged there. Are you referring to OPENLDAP_REL_ENG_2_4 in the git tree? I'm not sure if I'll have the time (work) to tackle that but I'll see what I can do. > > > > Looks like a double-free. Can you reproduce this consistently? If > so, what are > > the steps? can you run slapd under valgrind and reproduce this? I can reproduce it consistently in terms that it crashes reliably after 2 to 4 days with 1 to 2 Linux hosts connected via pam-ldap account sessions. Other than that I've not been able to find a way to make it crash on demand. I do know it won't crash if it is run in the foreground with -d -1. I'm running it now under valgrind, any options you are looking for in particular? I'll report back the next time it crashes and/or I can try RE24. > >> > >> Program received signal SIGABRT, Aborted. > >> [Switching to Thread 0xae1edb70 (LWP 6121)] > >> 0xb76e2430 in __kernel_vsyscall () > >> (gdb) > >> (gdb) > >> (gdb) bt > >> #0 0xb76e2430 in __kernel_vsyscall () > >> #1 0xb71b4651 in *__GI_raise (sig=6) at > >> ../nptl/sysdeps/unix/sysv/linux/raise.c:64 > >> #2 0xb71b7a82 in *__GI_abort () at abort.c:92 > >> #3 0xb71eb49d in __libc_message (do_abort=2, fmt=0xb72bff98 "*** > glibc > >> detected *** %s: %s: 0x%s ***\n") at > >> ../sysdeps/unix/sysv/linux/libc_fatal.c:189 > >> #4 0xb71f5591 in malloc_printerr (action=<value optimized out>, > str=0x6 > >> <Address 0x6 out of bounds>, ptr=0xb9584e80) at malloc.c:6266 > >> #5 0xb71f6de8 in _int_free (av=<value optimized out>, p=<value > >> optimized out>) at malloc.c:4794 > >> #6 0xb71f9ecd in *__GI___libc_free (mem=0xb9584e80) at > malloc.c:3738 > >> #7 0xb768ac20 in ber_memfree_x () from /usr/lib/liblber-2.4.so.2 > >> #8 0xb768acaf in ber_bvarray_free_x () from > /usr/lib/liblber-2.4.so.2 > >> #9 0xb768acf5 in ber_bvarray_free () from > /usr/lib/liblber-2.4.so.2 > >> #10 0xb7743e5d in attr_clean (a=0xb6dcc06c) at > >> /tmp/buildd/openldap-2.4.25/servers/slapd/attr.c:148 > >> #11 0xb7743efb in attrs_free (a=0xb6dcc06c) at > >> /tmp/buildd/openldap-2.4.25/servers/slapd/attr.c:198 > >> #12 0xb6d84b7f in hdb_cache_modify (bdb=0xb9536e10, e=0xb94f1dac, > >> newAttrs=0xb6dd6884, txn=0xb2176970, lock=0xae1ec930) at > cache.c:1238 > >> #13 0xb6d7008c in hdb_modify (op=0xae1eccfc, rs=0xae1ecad0) at > modify.c:662 > >> #14 0xb6d52e81 in remove_query_data (op=<value optimized out>, > >> query_uuid=<value optimized out>) > >> at > /tmp/buildd/openldap-2.4.25/servers/slapd/overlays/pcache.c:1829 > >> #15 0xb6d53d0b in consistency_check (ctx=0xae1ed1dc, > arg=0xb955e018) at > >> /tmp/buildd/openldap-2.4.25/servers/slapd/overlays/pcache.c:3520 > >> #16 0xb769d8b4 in ?? () from /usr/lib/libldap_r-2.4.so.2 > >> #17 0xb72e996e in start_thread (arg=0xae1edb70) at > pthread_create.c:300 > >> #18 0xb7257a4e in clone () at > ../sysdeps/unix/sysv/linux/i386/clone.S:130 > >> (gdb) continue > >> Continuing. > >> [Thread 0xaddecb70 (LWP 6122) exited] > >> [Thread 0xae1edb70 (LWP 6121) exited] > >> [Thread 0xae7f0b70 (LWP 6120) exited] > >> [Thread 0xaedf3b70 (LWP 6119) exited] > >> [Thread 0xaf2f5b70 (LWP 6118) exited] > >> [Thread 0xaf7f7b70 (LWP 6117) exited] > >> [Thread 0xafbf8b70 (LWP 6116) exited] > >> [Thread 0xafff9b70 (LWP 6115) exited] > >> [Thread 0xb04fbb70 (LWP 6114) exited] > >> [Thread 0xb08fcb70 (LWP 6113) exited] > >> [Thread 0xb582ab70 (LWP 5868) exited] > >> [Thread 0xb5320b70 (LWP 5869) exited] > >> [Thread 0xb4e1eb70 (LWP 5870) exited] > >> [Thread 0xb4a1db70 (LWP 5871) exited] > >> [Thread 0xb461cb70 (LWP 5872) exited] > >> [Thread 0xb421bb70 (LWP 5873) exited] > >> [Thread 0xb5c2bb70 (LWP 5867) exited] > >> > >> Program terminated with signal SIGABRT, Aborted. > >> The program no longer exists. > >> (gdb) > >> > >> > > > > > > > -- > -- Howard Chu > CTO, Symas Corp. http://www.symas.com > Director, Highland Sun http://highlandsun.com/hyc/ > Chief Architect, OpenLDAP http://www.openldap.org/project/
