commit "ITS#8226 limit size of read txns in searches" has a bug
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Hi, Howard.
wwctx.txn may be uninitialized, see lines 712-720 of back-mdb/search.c
http://www.openldap.org/devel/gitweb.cgi?p=openldap.git;a=blob;f=servers/...
And therefore mdb_rtxn_snap() may segfault when will called from line 1127.
http://www.openldap.org/devel/gitweb.cgi?p=openldap.git;a=blob;f=servers/...
I think, one of the following should be:
- wwctx should be initialize completely at 712;
or
- an additional condition should be checked at 1123-1125.
Regards,
Leonid.
Леонид Юрьев wrote:
Hi, Howard.
wwctx.txn may be uninitialized, see lines 712-720 of back-mdb/search.c
http://www.openldap.org/devel/gitweb.cgi?p=openldap.git;a=blob;f=servers/...
And therefore mdb_rtxn_snap() may segfault when will called from line 1127.
http://www.openldap.org/devel/gitweb.cgi?p=openldap.git;a=blob;f=servers/...
I think, one of the following should be:
- wwctx should be initialize completely at 712;
or
- an additional condition should be checked at 1123-1125.
Thanks, you're right. If the current operation doesn't own the transaction
(e.g. search called while evaluating the ACL in some other operation) then it
must leave the transaction alone. Fixed now.
--
-- Howard Chu
CTO, Symas Corp. http://www.symas.com
Director, Highland Sun http://highlandsun.com/hyc/
Chief Architect, OpenLDAP http://www.openldap.org/project/
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Howard Chu -
Леонид Юрьев