On 11/08/2023 09:49, Vikash Garodia wrote:
On 8/11/2023 2:12 PM, Bryan O'Donoghue wrote:
On 11/08/2023 07:04, Vikash Garodia wrote:
On 8/10/2023 5:03 PM, Bryan O'Donoghue wrote:
On 10/08/2023 03:25, Vikash Garodia wrote:
+ if (hweight_long(core->dec_codecs) + hweight_long(core->enc_codecs) >
MAX_CODEC_NUM)
+ return;
+
Shouldn't this be >= ?
Not needed. Lets take a hypothetical case when core->dec_codecs has initial 16
(0-15) bits set and core->enc_codecs has next 16 bits (16-31) set. The bit count
would be 32. The codec loop after this check would run on caps array index 0-31.
I do not see a possibility for OOB access in this case.
struct hfi_plat_caps caps[MAX_CODEC_NUM];
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bod
Are you not doing a general defensive coding pass in this series ie
"[PATCH v2 2/4] venus: hfi: fix the check to handle session buffer requirement"
In "PATCH v2 2/4", there is a possibility if the check does not consider "=".
Here in this patch, I do not see a possibility.
---
bod
But surely hweight_long(core->dec_codecs) +
hweight_long(core->enc_codecs) == MAX_CODEC_NUM is an invalid offset ?
---
bod
