[PATCH 4/5] drm/amdgpu/aca: Add missing NULL check for banks parameter in aca_banks_add_bank
Sreeraj S Kurup <[email protected]>
| Newsgroups | gmane.linux.kernel,gmane.comp.freedesktop.amd-gfx,gmane.comp.video.dri.devel |
|---|---|
| Message-ID | <[email protected]> |
aca_banks_add_bank() verified that the 'bank' parameter was non-NULL, but passed 'banks' directly into list_add_tail(&node->node, &banks->list) and incremented 'banks->nr_banks' without validating whether 'banks' was NULL. Add a NULL check for 'banks' to prevent a kernel NULL pointer dereference if an invalid pointer is passed by a caller. Signed-off-by: Sreeraj S Kurup <[email protected]> --- drivers/gpu/drm/amd/amdgpu/amdgpu_aca.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_aca.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_aca.c index 1cddacb7c554..47f3bcd5de0b 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_aca.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_aca.c @@ -49,7 +49,7 @@ static int aca_banks_add_bank(struct aca_banks *banks, struct aca_bank *bank) { struct aca_bank_node *node; - if (!bank) + if (!banks || !bank) return -EINVAL; node = kvzalloc_obj(*node); -- 2.54.0