kpriv/linux-hardened
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

libnvdimm, namespace: potential NULL deref on allocation error

Browse source 
If the kcalloc() fails then "devs" can be NULL and we dereference it
checking "devs[i]".

Fixes: 1b40e09a12 ('libnvdimm: blk labels and namespace instantiation')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Carpenter 2016-10-12 09:34:29 +03:00 committed by Dan Williams
parent 1001354ca3
commit 75d29713b7
1 changed files with 8 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

14
drivers/nvdimm/namespace_devs.c
View file

@ -2176,12 +2176,14 @@ static struct device **scan_labels(struct nd_region *nd_region)
return devs;
err:
for (i = 0; devs[i]; i++)
if (is_nd_blk(&nd_region->dev))
namespace_blk_release(devs[i]);
else
namespace_pmem_release(devs[i]);
kfree(devs);
if (devs) {
for (i = 0; devs[i]; i++)
if (is_nd_blk(&nd_region->dev))
namespace_blk_release(devs[i]);
else
namespace_pmem_release(devs[i]);
kfree(devs);
}
return NULL;
}