Author: pjd
Date: Wed Oct 19 23:40:37 2011
New Revision: 226552
URL: http://svn.freebsd.org/changeset/base/226552
Log:
Never pass NULL block pointer when reading. This is neither expected nor
handled by lower layers like vdev_raidz, which uses bp for checksum
verification. This bug could lead to NULL pointer reference and resets
during boot.
MFC after: 3 days
Modified:
head/sys/boot/zfs/zfsimpl.c
Modified: head/sys/boot/zfs/zfsimpl.c
==============================================================================
--- head/sys/boot/zfs/zfsimpl.c Wed Oct 19 23:37:30 2011 (r226551)
+++ head/sys/boot/zfs/zfsimpl.c Wed Oct 19 23:40:37 2011 (r226552)
@@ -988,7 +988,8 @@ zio_read_gang(spa_t *spa, const blkptr_t
break;
if (!vdev || !vdev->v_read)
return (EIO);
- if (vdev->v_read(vdev, NULL, &zio_gb, offset, SPA_GANGBLOCKSIZE))
+
+ if (vdev->v_read(vdev, bp, &zio_gb, offset, SPA_GANGBLOCKSIZE))
return (EIO);
for (i = 0; i < SPA_GBH_NBLKPTRS; i++) {
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