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Mesa/u_mesa-gallium-llvmpipe-fix-SIGFPE.patch

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From: Takashi Iwai <tiwai@suse.de>
Subject: Fix zero-division in llvmpipe_texture_layout()
References: bnc#879462
Fix the crash of "gnome-control-center info" invocation on QEMU where
zero height is passed at init.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
src/gallium/drivers/llvmpipe/lp_texture.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/src/gallium/drivers/llvmpipe/lp_texture.c
+++ b/src/gallium/drivers/llvmpipe/lp_texture.c
@@ -115,7 +115,7 @@ llvmpipe_texture_layout(struct llvmpipe_
lpr->row_stride[level] = align(nblocksx * block_size, util_cpu_caps.cacheline);
/* if row_stride * height > LP_MAX_TEXTURE_SIZE */
- if (lpr->row_stride[level] > LP_MAX_TEXTURE_SIZE / nblocksy) {
+ if (nblocksy && lpr->row_stride[level] > LP_MAX_TEXTURE_SIZE / nblocksy) {
/* image too large */
goto fail;
}