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drm/amd/ras: Add NULL checks for ras_core sys_fn callbacks

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Some ras core helper functions access ras_core and its callback
table (sys_fn) without validating them first.

Cc: Tao Zhou <tao.zhou1@amd.com>
Cc: YiPeng Chai <YiPeng.Chai@amd.com>
Cc: Dan Carpenter <dan.carpenter@linaro.org>
Cc: Christian König <christian.koenig@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com>
Reviewed-by: YiPeng Chai <YiPeng.Chai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Srinivasan Shanmugam 2026-03-19 11:10:10 +05:30 committed by Alex Deucher
parent fc61df1516
commit e495c688ed
1 changed files with 13 additions and 0 deletions
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13
drivers/gpu/drm/amd/ras/rascore/ras_core.c
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@ -116,6 +116,9 @@ bool ras_core_gpu_in_reset(struct ras_core_context *ras_core)
{
uint32_t status = 0;
if (!ras_core)
return false;
if (ras_core->sys_fn &&
ras_core->sys_fn->check_gpu_status)
ras_core->sys_fn->check_gpu_status(ras_core, &status);
@ -127,6 +130,9 @@ bool ras_core_gpu_is_vf(struct ras_core_context *ras_core)
{
uint32_t status = 0;
if (!ras_core)
return false;
if (ras_core->sys_fn &&
ras_core->sys_fn->check_gpu_status)
ras_core->sys_fn->check_gpu_status(ras_core, &status);
@ -479,6 +485,9 @@ int ras_core_handle_fatal_error(struct ras_core_context *ras_core)
uint32_t ras_core_get_curr_nps_mode(struct ras_core_context *ras_core)
{
if (!ras_core)
return 0;
if (ras_core->ras_nbio.ip_func &&
ras_core->ras_nbio.ip_func->get_memory_partition_mode)
return ras_core->ras_nbio.ip_func->get_memory_partition_mode(ras_core);
@ -562,6 +571,8 @@ bool ras_core_ras_interrupt_detected(struct ras_core_context *ras_core)
int ras_core_get_gpu_mem(struct ras_core_context *ras_core,
enum gpu_mem_type mem_type, struct gpu_mem_block *gpu_mem)
{
if (!ras_core || !gpu_mem)
return -EINVAL;
if (ras_core->sys_fn && ras_core->sys_fn->get_gpu_mem)
return ras_core->sys_fn->get_gpu_mem(ras_core, mem_type, gpu_mem);
@ -572,6 +583,8 @@ int ras_core_get_gpu_mem(struct ras_core_context *ras_core,
int ras_core_put_gpu_mem(struct ras_core_context *ras_core,
enum gpu_mem_type mem_type, struct gpu_mem_block *gpu_mem)
{
if (!ras_core || !gpu_mem)
return -EINVAL;
if (ras_core->sys_fn && ras_core->sys_fn->put_gpu_mem)
return ras_core->sys_fn->put_gpu_mem(ras_core, mem_type, gpu_mem);