diff options
| author | Denis Arefev <[email protected]> | 2025-03-20 09:35:02 +0000 |
|---|---|---|
| committer | Alex Deucher <[email protected]> | 2025-04-09 14:53:11 +0000 |
| commit | 7ba88b5cccc1a99c1afb96e31e7eedac9907704c (patch) | |
| tree | b7568c2816c541e2376ac712e762a35b5d1adabc /drivers/gpu/drm/amd/pm | |
| parent | drm/amdgpu: cancel gfx idle work in device suspend for s0ix (diff) | |
| download | kernel-7ba88b5cccc1a99c1afb96e31e7eedac9907704c.tar.gz kernel-7ba88b5cccc1a99c1afb96e31e7eedac9907704c.zip | |
drm/amd/pm/smu11: Prevent division by zero
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: 1e866f1fe528 ("drm/amd/pm: Prevent divide by zero")
Signed-off-by: Denis Arefev <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
(cherry picked from commit da7dc714a8f8e1c9fc33c57cd63583779a3bef71)
Cc: [email protected]
Diffstat (limited to 'drivers/gpu/drm/amd/pm')
| -rw-r--r-- | drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c b/drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c index 78391d8f35a9..25fabf336a64 100644 --- a/drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c +++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/smu_v11_0.c @@ -1204,7 +1204,7 @@ int smu_v11_0_set_fan_speed_rpm(struct smu_context *smu, uint32_t crystal_clock_freq = 2500; uint32_t tach_period; - if (speed == 0) + if (!speed || speed > UINT_MAX/8) return -EINVAL; /* * To prevent from possible overheat, some ASICs may have requirement |