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From: agk@sourceware.org To: lvm-devel@redhat.com, lvm2-cvs@sourceware.org Subject: LVM2/libdm/datastruct hash.c Date: Tue, 03 Nov 2009 00:45:00 -0000 [thread overview] Message-ID: <20091103004535.1307.qmail@sourceware.org> (raw) CVSROOT: /cvs/lvm2 Module name: LVM2 Changes by: agk@sourceware.org 2009-11-03 00:45:35 Modified files: libdm/datastruct: hash.c Log message: Fix hash lookup segfault when keys compared are different lengths. Patches: http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/libdm/datastruct/hash.c.diff?cvsroot=lvm2&r1=1.9&r2=1.10 --- LVM2/libdm/datastruct/hash.c 2008/11/03 18:59:59 1.9 +++ LVM2/libdm/datastruct/hash.c 2009/11/03 00:45:35 1.10 @@ -143,9 +143,13 @@ unsigned h = _hash(key, len) & (t->num_slots - 1); struct dm_hash_node **c; - for (c = &t->slots[h]; *c; c = &((*c)->next)) + for (c = &t->slots[h]; *c; c = &((*c)->next)) { + if ((*c)->keylen != len) + continue; + if (!memcmp(key, (*c)->key, len)) break; + } return c; }
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