This is a note to let you know that I've just added the patch titled
powercap: intel_rapl: Fix off by one in get_rpi()
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
powercap-intel_rapl-fix-off-by-one-in-get_rpi.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 7517d5d2a4b1fb1867eabe7437e7064325bbcac4
Author: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Date: Tue Aug 20 11:41:34 2024 +0300
powercap: intel_rapl: Fix off by one in get_rpi()
[ Upstream commit 95f6580352a7225e619551febb83595bcb77ab17 ]
The rp->priv->rpi array is either rpi_msr or rpi_tpmi which have
NR_RAPL_PRIMITIVES number of elements. Thus the > needs to be >=
to prevent an off by one access.
Fixes: 98ff639a7289 ("powercap: intel_rapl: Support per Interface primitive information")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Acked-by: Zhang Rui <rui.zhang@xxxxxxxxx>
Link: https://patch.msgid.link/86e3a059-504d-4795-a5ea-4a653f3b41f8@stanley.mountain
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/powercap/intel_rapl_common.c b/drivers/powercap/intel_rapl_common.c
index 3dfe45ac300aa..f1de4111e98d9 100644
--- a/drivers/powercap/intel_rapl_common.c
+++ b/drivers/powercap/intel_rapl_common.c
@@ -738,7 +738,7 @@ static struct rapl_primitive_info *get_rpi(struct rapl_package *rp, int prim)
{
struct rapl_primitive_info *rpi = rp->priv->rpi;
- if (prim < 0 || prim > NR_RAPL_PRIMITIVES || !rpi)
+ if (prim < 0 || prim >= NR_RAPL_PRIMITIVES || !rpi)
return NULL;
return &rpi[prim];
