tmakin/ack-tegra
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm/amd/pm/swsmu/smu13/smu_v13_0: Prevent division by zero

Browse Source 
commit f23e9116ebb71b63fe9cec0dcac792aa9af30b0c upstream.

The user can set any speed value.
If speed is greater than UINT_MAX/8, division by zero is possible.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: c05d1c4015 ("drm/amd/swsmu: add aldebaran smu13 ip support (v3)")
Signed-off-by: Denis Arefev <arefev@swemel.ru>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Denis Arefev
2025-03-21 13:52:31 +03:00
committed by Greg Kroah-Hartman
parent 8e9c4f8d19
commit fb803d4bb9
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c
View File

@@ -1228,7 +1228,7 @@ int smu_v13_0_set_fan_speed_rpm(struct smu_context *smu,
uint32_t tach_period;
int ret;
if (!speed)
if (!speed || speed > UINT_MAX/8)
return -EINVAL;
ret = smu_v13_0_auto_fan_control(smu, 0);