Fix NULL dereference in umem.c
Signed-off-by: Neil Brown <neilb@suse.de>
Tested-by: Dave Chinner <dgc@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
page->idx++;
if (page->idx >= bio->bi_vcnt) {
page->bio = bio->bi_next;
page->idx++;
if (page->idx >= bio->bi_vcnt) {
page->bio = bio->bi_next;
- page->idx = page->bio->bi_idx;
+ if (page->bio)
+ page->idx = page->bio->bi_idx;
}
pci_unmap_page(card->dev, desc->data_dma_handle,
}
pci_unmap_page(card->dev, desc->data_dma_handle,