lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Mon, 28 Mar 2022 07:17:54 -0400 From: Sasha Levin <sashal@...nel.org> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org Cc: Christoph Hellwig <hch@....de>, Jens Axboe <axboe@...nel.dk>, Sasha Levin <sashal@...nel.org>, maximlevitsky@...il.com, oakad@...oo.com, ulf.hansson@...aro.org, baijiaju1990@...il.com, chaitanya.kulkarni@....com, mcgrof@...nel.org, linux-mmc@...r.kernel.org Subject: [PATCH AUTOSEL 5.17 10/43] memstick/mspro_block: fix handling of read-only devices From: Christoph Hellwig <hch@....de> [ Upstream commit 6dab421bfe06a59bf8f212a72e34673e8acf2018 ] Use set_disk_ro to propagate the read-only state to the block layer instead of checking for it in ->open and leaking a reference in case of a read-only device. Signed-off-by: Christoph Hellwig <hch@....de> Link: https://lore.kernel.org/r/20220215094514.3828912-4-hch@lst.de Signed-off-by: Jens Axboe <axboe@...nel.dk> Signed-off-by: Sasha Levin <sashal@...nel.org> --- drivers/memstick/core/mspro_block.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/memstick/core/mspro_block.c b/drivers/memstick/core/mspro_block.c index c0450397b673..7ea312f0840e 100644 --- a/drivers/memstick/core/mspro_block.c +++ b/drivers/memstick/core/mspro_block.c @@ -186,13 +186,8 @@ static int mspro_block_bd_open(struct block_device *bdev, fmode_t mode) mutex_lock(&mspro_block_disk_lock); - if (msb && msb->card) { + if (msb && msb->card) msb->usage_count++; - if ((mode & FMODE_WRITE) && msb->read_only) - rc = -EROFS; - else - rc = 0; - } mutex_unlock(&mspro_block_disk_lock); @@ -1239,6 +1234,9 @@ static int mspro_block_init_disk(struct memstick_dev *card) set_capacity(msb->disk, capacity); dev_dbg(&card->dev, "capacity set %ld\n", capacity); + if (msb->read_only) + set_disk_ro(msb->disk, true); + rc = device_add_disk(&card->dev, msb->disk, NULL); if (rc) goto out_cleanup_disk; -- 2.34.1
Powered by blists - more mailing lists