Commit 2f6cf0de authored by Kent Overstreet's avatar Kent Overstreet Committed by Linus Torvalds

block: Fix bio_copy_data()

The memcpy() in bio_copy_data() was using the wrong offset vars, leading
to data corruption in weird unusual setups.
Signed-off-by: default avatarKent Overstreet <>
Cc: Jens Axboe <>
Cc: linux-stable <> # >= v3.9
Signed-off-by: default avatarLinus Torvalds <>
parent 4a10c2ac
......@@ -917,8 +917,8 @@ void bio_copy_data(struct bio *dst, struct bio *src)
src_p = kmap_atomic(src_bv->bv_page);
dst_p = kmap_atomic(dst_bv->bv_page);
memcpy(dst_p + dst_bv->bv_offset,
src_p + src_bv->bv_offset,
memcpy(dst_p + dst_offset,
src_p + src_offset,
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