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| author | Denis Arefev <arefev@swemel.ru> | 2025-03-20 12:35:02 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2025-04-08 16:48:13 -0400 |
| commit | da7dc714a8f8e1c9fc33c57cd63583779a3bef71 (patch) | |
| tree | 906965c62197a8c40abbcd9d11b31f6963b0e186 /drivers | |
| parent | drm/amdgpu: cancel gfx idle work in device suspend for s0ix (diff) | |
| download | linux-da7dc714a8f8e1c9fc33c57cd63583779a3bef71.tar.gz linux-da7dc714a8f8e1c9fc33c57cd63583779a3bef71.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 <arefev@swemel.ru>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers')
| -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 |