Full_Name: Salvador Ortiz Version: 24 OS: Linux URL: ftp://ftp.msg.com.mx/pub/varios/mdb_del-must-ignore-data.patch Submission from: (NULL) (187.162.45.111)
According to the documentation, mdb_del should ignore the data parameter if the dbi was not opened with MDB_DUPSORT, but this check is missing causing a segfault deep in mdb_cursor_set when a NULL dcmp is called.
I discovered this in the following back trace:
#0 0x0000000000000000 in ?? () #1 0x00007ffff1080f69 in mdb_cursor_set (mc=mc@entry=0x7fffffffd220, key=key@entry=0x7fffffffd5f0, data=0x7fffffffd210, op=MDB_GET_BOTH, exactp=exactp@entry=0x7fffffffd20c) at mdb.c:5149 #2 0x00007ffff10862af in mdb_del (txn=txn@entry=0xe60a10, dbi=1, key=key@entry=0x7fffffffd5f0, data=data@entry=0x7fffffffd600) at mdb.c:7164 ...
A simple patch against gitorious's mdb.master provided.