Author: vmaffione
Date: Wed Jan 29 22:55:59 2020
New Revision: 357277
URL: https://svnweb.freebsd.org/changeset/base/357277
Log:
MFC r357159
netmap_mem_unmap: fix NULL pointer dereference
Modified:
stable/12/sys/dev/netmap/netmap_mem2.c
Directory Properties:
stable/12/ (props changed)
Modified: stable/12/sys/dev/netmap/netmap_mem2.c
==============================================================================
--- stable/12/sys/dev/netmap/netmap_mem2.c Wed Jan 29 22:48:18 2020
(r357276)
+++ stable/12/sys/dev/netmap/netmap_mem2.c Wed Jan 29 22:55:59 2020
(r357277)
@@ -1523,11 +1523,12 @@ static int
netmap_mem_unmap(struct netmap_obj_pool *p, struct netmap_adapter *na)
{
int i, lim = p->objtotal;
- struct netmap_lut *lut = &na->na_lut;
+ struct netmap_lut *lut;
if (na == NULL || na->pdev == NULL)
return 0;
+ lut = &na->na_lut;
#if defined(__FreeBSD__)
/* On FreeBSD mapping and unmapping is performed by the txsync
* and rxsync routine, packet by packet. */
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