From 3a905c37c3510ea6d7cfcdfd0f272ba731286560 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 25 Jan 2021 19:39:57 +0100 Subject: [PATCH] block: skip bio_check_eod for partition-remapped bios When an already remapped bio is resubmitted (e.g. by blk_queue_split), bio_check_eod will compare the remapped bi_sector against the size of the partition, leading to spurious I/O failures. Skip the EOD check in this case. Fixes: 309dca309fc3 ("block: store a block_device pointer in struct bio") Reported-by: Jens Axboe Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe --- block/blk-core.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/block/blk-core.c b/block/blk-core.c index 88f608904432..5e752840b41a 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -815,11 +815,12 @@ static noinline_for_stack bool submit_bio_checks(struct bio *bio) goto end_io; if (unlikely(bio_check_ro(bio))) goto end_io; - if (unlikely(bio_check_eod(bio))) - goto end_io; - if (bio->bi_bdev->bd_partno && !bio_flagged(bio, BIO_REMAPPED) && - unlikely(blk_partition_remap(bio))) - goto end_io; + if (!bio_flagged(bio, BIO_REMAPPED)) { + if (unlikely(bio_check_eod(bio))) + goto end_io; + if (bdev->bd_partno && unlikely(blk_partition_remap(bio))) + goto end_io; + } /* * Filter flush bio's early so that bio based drivers without flush