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drm/radeon: Fix integer overflow in radeon_cs_parser_init

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[ Upstream commit f828b681d0cd566f86351c0b913e6cb6ed8c7b9c ]

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 0ca3768534
commit 2e1be420b8
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/radeon/radeon_cs.c
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@ -270,7 +270,8 @@ int radeon_cs_parser_init(struct radeon_cs_parser *p, void *data)
{
struct drm_radeon_cs *cs = data;
uint64_t *chunk_array_ptr;
unsigned size, i;
u64 size;
unsigned i;
u32 ring = RADEON_CS_RING_GFX;
s32 priority = 0;