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Check before dereferencing a possible null pointer (cdevsw[i]->d_open)

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This commit is contained in:
Peter Wemm 1995-12-13 20:08:53 +00:00
parent 8d447bb443
commit b10853f674
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=12815
1 changed files with 2 additions and 2 deletions
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4
sys/scsi/scsiconf.c
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@ -16,7 +16,7 @@
*
* New configuration setup: dufault@hda.com
*
* $Id: scsiconf.c,v 1.39 1995/12/10 10:58:25 julian Exp $
* $Id: scsiconf.c,v 1.40 1995/12/13 15:13:37 julian Exp $
*/
#include <sys/types.h>
@ -1198,7 +1198,7 @@ scsi_dev_lookup(d_open)
dev_t d = NODEV;
for (i = 0; i < nchrdev; i++)
if (cdevsw[i]->d_open == d_open)
if (cdevsw[i] && cdevsw[i]->d_open == d_open)
{
d = makedev(i, 0);
break;