diff options
| author | Nicholas Bellinger <nab@linux-iscsi.org> | 2014-02-20 04:52:01 +0400 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2014-02-22 03:56:36 +0400 |
| commit | eec70897d81bb2913e22c6792ea2739faf59c3e1 (patch) | |
| tree | 4ec843f5e4eb7ccd641870ac92bc6bac867e7b70 /fs | |
| parent | d6a25b31315327eef7785b895c354cc45c3f3742 (diff) | |
| download | linux-eec70897d81bb2913e22c6792ea2739faf59c3e1.tar.xz | |
bio-integrity: Drop bio_integrity_verify BUG_ON in post bip->bip_iter world
Given that bip->bip_iter.bi_size is decremented after bio_advance() ->
bio_integrity_advance() is called, the BUG_ON() in bio_integrity_verify()
ends up tripping in v3.14-rc1 code with the advent of immutable biovecs
in:
commit d57a5f7c6605f15f3b5134837e68b448a7cea88e
Author: Kent Overstreet <kmo@daterainc.com>
Date: Sat Nov 23 17:20:16 2013 -0800
bio-integrity: Convert to bvec_iter
Given that there is no easy way to ascertain the original bi_size
value, go ahead and drop this BUG_ON().
Reported-by: Sagi Grimberg <sagig@dev.mellanox.co.il>
Reported-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Kent Overstreet <kmo@daterainc.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/bio-integrity.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/fs/bio-integrity.c b/fs/bio-integrity.c index 0129b78a6908..4f70f383132c 100644 --- a/fs/bio-integrity.c +++ b/fs/bio-integrity.c @@ -458,11 +458,10 @@ static int bio_integrity_verify(struct bio *bio) struct blk_integrity_exchg bix; struct bio_vec *bv; sector_t sector = bio->bi_integrity->bip_iter.bi_sector; - unsigned int sectors, total, ret; + unsigned int sectors, ret = 0; void *prot_buf = bio->bi_integrity->bip_buf; int i; - ret = total = 0; bix.disk_name = bio->bi_bdev->bd_disk->disk_name; bix.sector_size = bi->sector_size; @@ -484,8 +483,6 @@ static int bio_integrity_verify(struct bio *bio) sectors = bv->bv_len / bi->sector_size; sector += sectors; prot_buf += sectors * bi->tuple_size; - total += sectors * bi->tuple_size; - BUG_ON(total > bio->bi_integrity->bip_iter.bi_size); kunmap_atomic(kaddr); } |