Commit 202500d2 authored by Peng Hao's avatar Peng Hao Committed by Ulf Hansson

mmc: block: Fix use-after-free issue for rpmb

The data structure member “rpmb->md” was passed to a call of the function
“mmc_blk_put” after a call of the function “put_device”. Reorder these
function calls to keep the data accesses consistent.

Fixes: 1c87f735 ("mmc: block: Fix bug when removing RPMB chardev ")
Signed-off-by: default avatarPeng Hao <richard.peng@oppo.com>
Cc: stable@vger.kernel.org
[Uffe: Fixed up mangled patch and updated commit message]
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent 2b17b8d7
...@@ -2484,8 +2484,8 @@ static int mmc_rpmb_chrdev_release(struct inode *inode, struct file *filp) ...@@ -2484,8 +2484,8 @@ static int mmc_rpmb_chrdev_release(struct inode *inode, struct file *filp)
struct mmc_rpmb_data *rpmb = container_of(inode->i_cdev, struct mmc_rpmb_data *rpmb = container_of(inode->i_cdev,
struct mmc_rpmb_data, chrdev); struct mmc_rpmb_data, chrdev);
put_device(&rpmb->dev);
mmc_blk_put(rpmb->md); mmc_blk_put(rpmb->md);
put_device(&rpmb->dev);
return 0; return 0;
} }
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment