Author: peter
Date: Thu Nov 27 03:37:46 2008
New Revision: 185357
URL: http://svn.freebsd.org/changeset/base/185357
Log:
Don't let ata_completed() dereference a null request->dma pointer to
print dma status after a media error.
Modified:
head/sys/dev/ata/ata-queue.c
Modified: head/sys/dev/ata/ata-queue.c
==============================================================================
--- head/sys/dev/ata/ata-queue.c Thu Nov 27 02:19:44 2008
(r185356)
+++ head/sys/dev/ata/ata-queue.c Thu Nov 27 03:37:46 2008
(r185357)
@@ -357,7 +357,7 @@ ata_completed(void *context, int dummy)
"\6MEDIA_CHANGED\5NID_NOT_FOUND"
"\4MEDIA_CHANGE_REQEST"
"\3ABORTED\2NO_MEDIA\1ILLEGAL_LENGTH");
- if ((request->flags & ATA_R_DMA) &&
+ if ((request->flags & ATA_R_DMA) && request->dma &&
(request->dma->status & ATA_BMSTAT_ERROR))
printf(" dma=0x%02x", request->dma->status);
if (!(request->flags & (ATA_R_ATAPI | ATA_R_CONTROL)))
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