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| author |   Mikulas Patocka <mpatocka@redhat.com> | 2022-09-14 16:55:51 -0400 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2022-09-15 00:25:17 -0600 |
| commit | c4fa368466cc1b60bb92f867741488930ddd6034 (patch) | |
| tree | a80c5a294daf07f3ff4951a5ee205721f8cdb48c /drivers/fpga/fpga-bridge.c | |
| parent | block: blk_queue_enter() / __bio_queue_enter() must return -EAGAIN for nowait (diff) | |
| download | wireguard-linux-c4fa368466cc1b60bb92f867741488930ddd6034.tar.xz wireguard-linux-c4fa368466cc1b60bb92f867741488930ddd6034.zip | |
blk-lib: fix blkdev_issue_secure_erase
There's a bug in blkdev_issue_secure_erase. The statement
"unsigned int len = min_t(sector_t, nr_sects, max_sectors);"
sets the variable "len" to the length in sectors, but the statement
"bio->bi_iter.bi_size = len" treats it as if it were in bytes.
The statements "sector += len << SECTOR_SHIFT" and "nr_sects -= len <<
SECTOR_SHIFT" are thinko.
This patch fixes it.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: stable@vger.kernel.org # v5.19
Fixes: 44abff2c0b97 ("block: decouple REQ_OP_SECURE_ERASE from REQ_OP_DISCARD")
Link: https://lore.kernel.org/r/alpine.LRH.2.02.2209141549480.28100@file01.intranet.prod.int.rdu2.redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/fpga/fpga-bridge.c')
0 files changed, 0 insertions, 0 deletions