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Message-Id: <1380003456-19938-2-git-send-email-kmo@daterainc.com> Date: Mon, 23 Sep 2013 23:17:26 -0700 From: Kent Overstreet <kmo@...erainc.com> To: torvalds@...ux-foundation.org, linux-kernel@...r.kernel.org, linux-bcache@...r.kernel.org Cc: axboe@...nel.dk, Kent Overstreet <kmo@...erainc.com>, stable@...r.kernel.org Subject: [PATCH 01/11] 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: Kent Overstreet <kmo@...erainc.com> Cc: Jens Axboe <axboe@...nel.dk> Cc: linux-stable <stable@...r.kernel.org> # >= v3.9 --- fs/bio.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/bio.c b/fs/bio.c index b3b20ed..ea5035d 100644 --- a/fs/bio.c +++ b/fs/bio.c @@ -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, bytes); kunmap_atomic(dst_p); -- 1.8.4.rc3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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