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| author | Todd Frederick <tfred@google.com> | 2022-11-29 19:31:34 +0000 |
|---|---|---|
| committer | Todd Frederick <tfred@google.com> | 2022-11-29 19:33:02 +0000 |
| commit | b6a9c4cf18bc2b7ab55f37df1b998c5833d4dbf3 (patch) | |
| tree | a6e703d09d3f0136b28f3fc936efbef3cc4bda61 | |
| parent | cb8f5eab1fc57a03b3ab8ba2d9de289df458db29 (diff) | |
| download | exynos-android-exynos-r11-4.19-android11-wear-jr2.tar.gz | |
drivers: gpu: r29p0: Fix CVE-2022-38181android-wear-11.0.0_r0.6android-exynos-r11-4.19-android11-wear-jr2
Bug: 258018678
Change-Id: I5556230c17ba29d6125a61bd387809df2c450fa7
Signed-off-by: Todd Frederick <tfred@google.com>
| -rw-r--r-- | drivers/gpu/arm/t72x/r29p0/mali_kbase_mem_linux.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/gpu/arm/t72x/r29p0/mali_kbase_mem_linux.c b/drivers/gpu/arm/t72x/r29p0/mali_kbase_mem_linux.c index a193324f8afd..0349361a10b0 100644 --- a/drivers/gpu/arm/t72x/r29p0/mali_kbase_mem_linux.c +++ b/drivers/gpu/arm/t72x/r29p0/mali_kbase_mem_linux.c @@ -807,6 +807,15 @@ int kbase_mem_flags_change(struct kbase_context *kctx, u64 gpu_addr, unsigned in if (kbase_is_region_invalid_or_free(reg)) goto out_unlock; + /* There is no use case to support MEM_FLAGS_CHANGE ioctl for allocations + * that have NO_USER_FREE flag set, to mark them as evictable/reclaimable. + * This would usually include JIT allocations, Tiler heap related allocations + * & GPU queue ringbuffer and none of them needs to be explicitly marked + * as evictable by Userspace. + */ + if (reg->flags & KBASE_REG_NO_USER_FREE) + goto out_unlock; + /* Is the region being transitioning between not needed and needed? */ prev_needed = (KBASE_REG_DONT_NEED & reg->flags) == KBASE_REG_DONT_NEED; new_needed = (BASE_MEM_DONT_NEED & flags) == BASE_MEM_DONT_NEED; |