Full_Name: Matthias Grau Version: 2.3.43 OS: irrelevant URL: Submission from: (NULL) (195.200.70.23)

Slapd segfaults on a syncrepl provider. This error occurs when the connections of several synchronous modify operations are not disconnected correctly (e.g. network issues).

syncprov.c line 1707: m2 seems to be NULL in this case so m2->mi_next causes the segfault.

Program received signal SIGSEGV, Segmentation fault. [Switching to Thread -1243620448 (LWP 21810)] 0x08148dc3 in syncprov_op_mod (op=0xb6307450, rs=0xb5dfd264) at syncprov.c:1707 1707 for ( m2 = mt->mt_mods; m2->mi_next != mi; (gdb) bt #0 0x08148dc3 in syncprov_op_mod (op=0xb6307450, rs=0xb5dfd264) at syncprov.c:1707 #1 0x080c6184 in overlay_op_walk (op=0xb6307450, rs=0xb5dfd264, which=op_modify, oi=0x825b470, on=0x825b560) at backover.c:640 #2 0x080c65dd in over_op_func (op=0xb6307450, rs=0xb5dfd264, which=op_modify) at backover.c:702 #3 0x08088d1b in fe_op_modify (op=0xb6307450, rs=0xb5dfd264) at modify.c:395 #4 0x08089558 in do_modify (op=0xb6307450, rs=0xb5dfd264) at modify.c:200 #5 0x08071fd2 in connection_operation (ctx=0xb5dfd2d8, arg_v=0xb6307450) at connection.c:1133 #6 0x08159b2a in ldap_int_thread_pool_wrapper (xpool=0x8225330) at tpool.c:478 #7 0xb7cfc34b in start_thread () from /lib/libpthread.so.0 #8 0xb7aea65e in clone () from /lib/libc.so.6 (gdb) print m2 $1 = (modinst *) 0x0