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mesa: fix off-by-one for newblock allocation in dlist_alloc

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Cc: mesa-stable
Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27556>
(cherry picked from commit 460d2c46a9)
This commit is contained in:
thfrwn 2024-02-09 17:00:55 -05:00 • committed by Eric Engestrom
parent 4c434ac992
commit e886ee02ed
2 changed files with 2 additions and 2 deletions
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2
.pick_status.json
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@ -54,7 +54,7 @@
"description": "mesa: fix off-by-one for newblock allocation in dlist_alloc",
"nominated": true,
"nomination_type": 0,
"resolution": 0,
"resolution": 1,
"main_sha": null,
"because_sha": null,
"notes": null

2
src/mesa/main/dlist.c
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@ -1220,7 +1220,7 @@ dlist_alloc(struct gl_context *ctx, OpCode opcode, GLuint bytes, bool align8)
ctx->ListState.CurrentPos++;
}
if (ctx->ListState.CurrentPos + numNodes + contNodes > BLOCK_SIZE) {
if (ctx->ListState.CurrentPos + numNodes + contNodes >= BLOCK_SIZE) {
/* This block is full. Allocate a new block and chain to it */
Node *newblock;
Node *n = ctx->ListState.CurrentBlock + ctx->ListState.CurrentPos;