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drm/radeon: Fix integer overflow in radeon_cs_parser_init

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[ Upstream commit f828b681d0 ]

The type of size is unsigned, if size is 0x40000000, there will be an
integer overflow, size will be zero after size *= sizeof(uint32_t),
will cause uninitialized memory to be referenced later

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: hackyzh002 <hackyzh002@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
hackyzh002
2023-04-19 20:20:58 +08:00
committed by Greg Kroah-Hartman
parent e6c0a9728e
commit e6825b30d3
1 changed files with 2 additions and 1 deletions
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drivers/gpu/drm/radeon/radeon_cs.c
+2 -1
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@@ -271,7 +271,8 @@ int radeon_cs_parser_init(struct radeon_cs_parser *p, void *data)
{ {
struct drm_radeon_cs *cs = data; struct drm_radeon_cs *cs = data;
uint64_t *chunk_array_ptr; uint64_t *chunk_array_ptr;
unsigned size, i; u64 size;
unsigned i;
u32 ring = RADEON_CS_RING_GFX; u32 ring = RADEON_CS_RING_GFX;
s32 priority = 0; s32 priority = 0;