mirrors/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-05-04 09:21:34 -04:00
Code Issues Packages Projects Releases Wiki Activity

drm/amd/display: Guard Possible Null Pointer Dereference

Browse Source 
[WHY]
In some situations, dc->res_pool may be null.

[HOW]
Check if pointer is null before dereference.

Reviewed-by: Joshua Aberback <joshua.aberback@amd.com>
Signed-off-by: Sung Lee <Sung.Lee@amd.com>
Signed-off-by: Zaeem Mohamed <zaeem.mohamed@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Sung Lee
2025-01-16 09:45:54 -05:00
committed by Alex Deucher
parent 871f65a59f
commit c87d202692
1 changed files with 5 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/gpu/drm/amd/display/dc/core/dc.c
View File

@@ -5611,9 +5611,11 @@ void dc_allow_idle_optimizations_internal(struct dc *dc, bool allow, char const
if (dc->clk_mgr != NULL && dc->clk_mgr->funcs->get_hard_min_memclk)
idle_dramclk_khz = dc->clk_mgr->funcs->get_hard_min_memclk(dc->clk_mgr);
for (i = 0; i < dc->res_pool->pipe_count; i++) {
pipe = &context->res_ctx.pipe_ctx[i];
subvp_pipe_type[i] = dc_state_get_pipe_subvp_type(context, pipe);
if (dc->res_pool && context) {
for (i = 0; i < dc->res_pool->pipe_count; i++) {
pipe = &context->res_ctx.pipe_ctx[i];
subvp_pipe_type[i] = dc_state_get_pipe_subvp_type(context, pipe);
}
}
DC_LOG_DC("%s: allow_idle=%d\n HardMinUClk_Khz=%d HardMinDramclk_Khz=%d\n Pipe_0=%d Pipe_1=%d Pipe_2=%d Pipe_3=%d Pipe_4=%d Pipe_5=%d (caller=%s)\n",