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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2017-05-10 22:40:06 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2017-05-14 13:30:05 +0200 |
| commit | 216c4e9db4c9d1d2a382b42880442dc632cd47d9 (patch) | |
| tree | 68c8fc3ef185f9da03feacfec23c79b314c58650 /drivers/powercap | |
| parent | 4486740da2e1cb307f58e0e62f94c92ec7c101a1 (diff) | |
| download | op-kernel-dev-216c4e9db4c9d1d2a382b42880442dc632cd47d9.zip op-kernel-dev-216c4e9db4c9d1d2a382b42880442dc632cd47d9.tar.gz | |
PowerCap: Fix an error code in powercap_register_zone()
In the current code we accidentally return the successful result from
idr_alloc() instead of a negative error pointer. The caller is looking
for an error pointer and so it treats the returned value as a valid
pointer.
This one might be a bit serious because if it lets people get around the
kernel's protection for remapping NULL. I'm not sure.
Fixes: 75d2364ea0ca (PowerCap: Add class driver)
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/powercap')
| -rw-r--r-- | drivers/powercap/powercap_sys.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/powercap/powercap_sys.c b/drivers/powercap/powercap_sys.c index 14bde0d..5b10b50 100644 --- a/drivers/powercap/powercap_sys.c +++ b/drivers/powercap/powercap_sys.c @@ -538,6 +538,7 @@ struct powercap_zone *powercap_register_zone( power_zone->id = result; idr_init(&power_zone->idr); + result = -ENOMEM; power_zone->name = kstrdup(name, GFP_KERNEL); if (!power_zone->name) goto err_name_alloc; |
