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Date: Tue, 24 Nov 2015 10:35:29 +0800 From: Ming Lei <ming.lei@...onical.com> To: Jens Axboe <axboe@...nel.dk>, linux-kernel@...r.kernel.org Cc: linux-block@...r.kernel.org, Christoph Hellwig <hch@...radead.org>, Michael Ellerman <mpe@...erman.id.au>, Laurent Dufour <ldufour@...ux.vnet.ibm.com>, Mark Salter <msalter@...hat.com>, Hannes Reinecke <hare@...e.de>, Pratyush Anand <panand@...hat.com>, Ming Lei <ming.lei@...onical.com>, stable@...nel.org Subject: [PATCH 1/3] block: fix segment split Inside blk_bio_segment_split(), previous bvec pointer(bvprvp) always points to the iterator local variable, which is obviously wrong, so fix it by pointing to the local variable of 'bvprv'. Fixes: 5014c311baa2b(block: fix bogus compiler warnings in blk-merge.c) Cc: stable@...nel.org #4.3 Reported-by: Michael Ellerman <mpe@...erman.id.au> Reported-by: Mark Salter <msalter@...hat.com> Tested-by: Laurent Dufour <ldufour@...ux.vnet.ibm.com> Tested-by: Mark Salter <msalter@...hat.com> Signed-off-by: Ming Lei <ming.lei@...onical.com> --- block/blk-merge.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/block/blk-merge.c b/block/blk-merge.c index de5716d8..f2efe8a 100644 --- a/block/blk-merge.c +++ b/block/blk-merge.c @@ -98,7 +98,7 @@ static struct bio *blk_bio_segment_split(struct request_queue *q, seg_size += bv.bv_len; bvprv = bv; - bvprvp = &bv; + bvprvp = &bvprv; sectors += bv.bv_len >> 9; continue; } @@ -108,7 +108,7 @@ new_segment: nsegs++; bvprv = bv; - bvprvp = &bv; + bvprvp = &bvprv; seg_size = bv.bv_len; sectors += bv.bv_len >> 9; } -- 1.9.1 -- 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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