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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: 98ff639a72 ("powercap: intel_rapl: Support per Interface primitive information")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Link: https://patch.msgid.link/86e3a059-504d-4795-a5ea-4a653f3b41f8@stanley.mountain
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dan Carpenter 2024-08-20 11:41:34 +03:00 committed by Greg Kroah-Hartman
parent 9fc60f2bdd
commit 288cbc505e
1 changed files with 1 additions and 1 deletions
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2
drivers/powercap/intel_rapl_common.c
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@ -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];