Author: vmaffione
Date: Sun Jan 26 21:34:46 2020
New Revision: 357159
URL: https://svnweb.freebsd.org/changeset/base/357159
Log:
netmap_mem_unmap: fix NULL pointer dereference
MFC after: 3 days
Modified:
head/sys/dev/netmap/netmap_mem2.c
Modified: head/sys/dev/netmap/netmap_mem2.c
==============================================================================
--- head/sys/dev/netmap/netmap_mem2.c Sun Jan 26 20:57:29 2020
(r357158)
+++ head/sys/dev/netmap/netmap_mem2.c Sun Jan 26 21:34:46 2020
(r357159)
@@ -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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