raspi/linux
1
0
Fork 1
mirror of https://github.com/raspberrypi/linux.git synced 2025-12-06 01:49:46 +00:00
Code Issues Projects Releases Wiki Activity

dm: fix alloc_dax error handling in alloc_dev

Browse Source 
[ Upstream commit d751939235 ]

Make sure ->dax_dev is NULL on error so that the cleanup path doesn't
trip over an ERR_PTR.

Reported-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20211129102203.2243509-2-hch@lst.de
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Christoph Hellwig
2021-11-29 11:21:35 +01:00
committed by Greg Kroah-Hartman
parent 2e2086f49e
commit dfde7afed7
1 changed files with 3 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/md/dm.c
View File

@@ -1894,8 +1894,10 @@ static struct mapped_device *alloc_dev(int minor)
if (IS_ENABLED(CONFIG_DAX_DRIVER)) {
md->dax_dev = alloc_dax(md, md->disk->disk_name,
&dm_dax_ops, 0);
if (IS_ERR(md->dax_dev))
if (IS_ERR(md->dax_dev)) {
md->dax_dev = NULL;
goto bad;
}
}
add_disk_no_queue_reg(md->disk);