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| author | Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl> | 2023-10-17 16:01:35 +0200 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-10-20 21:11:26 +0200 |
| commit | 08e9ebc75b5bcfec9d226f9e16bab2ab7b25a39a (patch) | |
| tree | aed9f199a0b5c02c76247f175364888b177d0016 /drivers/gpu/drm/amd/pm/amdgpu_pm.c | |
| parent | drm/amdgpu: Enable software RAS in vcn v4_0_3 (diff) | |
| download | linux-08e9ebc75b5bcfec9d226f9e16bab2ab7b25a39a.tar.xz linux-08e9ebc75b5bcfec9d226f9e16bab2ab7b25a39a.zip | |
drm/amd/pm: Handle non-terminated overdrive commands.
The incoming strings might not be terminated by a newline
or a 0.
(found while testing a program that just wrote the string
itself, causing a crash)
Cc: stable@vger.kernel.org
Fixes: e3933f26b657 ("drm/amd/pp: Add edit/commit/show OD clock/voltage support in sysfs")
Signed-off-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/pm/amdgpu_pm.c')
| -rw-r--r-- | drivers/gpu/drm/amd/pm/amdgpu_pm.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/pm/amdgpu_pm.c b/drivers/gpu/drm/amd/pm/amdgpu_pm.c index d76c3abf406f..358bb5e485f2 100644 --- a/drivers/gpu/drm/amd/pm/amdgpu_pm.c +++ b/drivers/gpu/drm/amd/pm/amdgpu_pm.c @@ -761,7 +761,7 @@ static ssize_t amdgpu_set_pp_od_clk_voltage(struct device *dev, if (adev->in_suspend && !adev->in_runpm) return -EPERM; - if (count > 127) + if (count > 127 || count == 0) return -EINVAL; if (*buf == 's') @@ -781,7 +781,8 @@ static ssize_t amdgpu_set_pp_od_clk_voltage(struct device *dev, else return -EINVAL; - memcpy(buf_cpy, buf, count+1); + memcpy(buf_cpy, buf, count); + buf_cpy[count] = 0; tmp_str = buf_cpy; @@ -798,6 +799,9 @@ static ssize_t amdgpu_set_pp_od_clk_voltage(struct device *dev, return -EINVAL; parameter_size++; + if (!tmp_str) + break; + while (isspace(*tmp_str)) tmp_str++; } |