From f4af292adec47119344da5c87127724ecc7191d5 Mon Sep 17 00:00:00 2001 From: "Martin K. Petersen" Date: Tue, 12 Apr 2022 15:55:37 +0800 Subject: [PATCH] block: bio-integrity: Advance seed correctly for larger interval sizes stable inclusion from linux-4.19.228 commit d21b6bbc78442bf490e7215ed620ec0878856a0e -------------------------------- commit b13e0c71856817fca67159b11abac350e41289f5 upstream. Commit 309a62fa3a9e ("bio-integrity: bio_integrity_advance must update integrity seed") added code to update the integrity seed value when advancing a bio. However, it failed to take into account that the integrity interval might be larger than the 512-byte block layer sector size. This broke bio splitting on PI devices with 4KB logical blocks. The seed value should be advanced by bio_integrity_intervals() and not the number of sectors. Cc: Dmitry Monakhov Cc: stable@vger.kernel.org Fixes: 309a62fa3a9e ("bio-integrity: bio_integrity_advance must update integrity seed") Tested-by: Dmitry Ivanov Reported-by: Alexey Lyashkov Signed-off-by: Martin K. Petersen Link: https://lore.kernel.org/r/20220204034209.4193-1-martin.petersen@oracle.com Signed-off-by: Jens Axboe Signed-off-by: Greg Kroah-Hartman Signed-off-by: Yongqiang Liu Signed-off-by: Laibin Qiu --- block/bio-integrity.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block/bio-integrity.c b/block/bio-integrity.c index 0b96220d0efd..2e22a3f7466a 100644 --- a/block/bio-integrity.c +++ b/block/bio-integrity.c @@ -399,7 +399,7 @@ void bio_integrity_advance(struct bio *bio, unsigned int bytes_done) struct blk_integrity *bi = blk_get_integrity(bio->bi_disk); unsigned bytes = bio_integrity_bytes(bi, bytes_done >> 9); - bip->bip_iter.bi_sector += bytes_done >> 9; + bip->bip_iter.bi_sector += bio_integrity_intervals(bi, bytes_done >> 9); bvec_iter_advance(bip->bip_vec, &bip->bip_iter, bytes); } EXPORT_SYMBOL(bio_integrity_advance); -- GitLab