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drm/amdgpu: fix potential overflow in fs_info.debugfs_name

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Use snprintf() with sizeof(fs_info.debugfs_name) so a long RAS block
name plus the "_err_inject" suffix cannot overflow the 32-byte buffer.

Signed-off-by: Stanley.Yang <Stanley.Yang@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Stanley.Yang 2026-05-11 16:49:19 +08:00 committed by Alex Deucher
parent 1a66ceb98b
commit 1a58070fda
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
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@ -2280,7 +2280,8 @@ void amdgpu_ras_debugfs_create_all(struct amdgpu_device *adev)
list_for_each_entry(obj, &con->head, node) {
if (amdgpu_ras_is_supported(adev, obj->head.block) &&
(obj->attr_inuse == 1)) {
sprintf(fs_info.debugfs_name, "%s_err_inject",
snprintf(fs_info.debugfs_name, sizeof(fs_info.debugfs_name),
"%s_err_inject",
get_ras_block_str(&obj->head));
fs_info.head = obj->head;
amdgpu_ras_debugfs_create(adev, &fs_info, dir);