Patch "drm/radeon: Use drm_calloc_ab for CS relocs" has been added to the 4.0-stable tree

Patch "drm/radeon: Use drm_calloc_ab for CS relocs" has been added to the 4.0-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    drm/radeon: Use drm_calloc_ab for CS relocs

to the 4.0-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     drm-radeon-use-drm_calloc_ab-for-cs-relocs.patch
and it can be found in the queue-4.0 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From b421ed15d2c3039eb724680e4de1e4b2bd196a9a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Michel=20D=C3=A4nzer?= <michel.daenzer@amd.com>
Date: Thu, 16 Apr 2015 11:17:27 +0900
Subject: drm/radeon: Use drm_calloc_ab for CS relocs
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From: =?UTF-8?q?Michel=20D=C3=A4nzer?= <michel.daenzer@amd.com>

commit b421ed15d2c3039eb724680e4de1e4b2bd196a9a upstream.

The number of relocs is passed in by userspace and can be large. It has
been observed to cause kcalloc failures in the wild.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/gpu/drm/radeon/radeon_cs.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/radeon/radeon_cs.c
+++ b/drivers/gpu/drm/radeon/radeon_cs.c
@@ -88,7 +88,7 @@ static int radeon_cs_parser_relocs(struc
 	p->dma_reloc_idx = 0;
 	/* FIXME: we assume that each relocs use 4 dwords */
 	p->nrelocs = chunk->length_dw / 4;
-	p->relocs = kcalloc(p->nrelocs, sizeof(struct radeon_bo_list), GFP_KERNEL);
+	p->relocs = drm_calloc_large(p->nrelocs, sizeof(struct radeon_bo_list));
 	if (p->relocs == NULL) {
 		return -ENOMEM;
 	}
@@ -428,7 +428,7 @@ static void radeon_cs_parser_fini(struct
 		}
 	}
 	kfree(parser->track);
-	kfree(parser->relocs);
+	drm_free_large(parser->relocs);
 	drm_free_large(parser->vm_bos);
 	for (i = 0; i < parser->nchunks; i++)
 		drm_free_large(parser->chunks[i].kdata);


Patches currently in stable-queue which might be from michel.daenzer@amd.com are

queue-4.0/drm-radeon-use-drm_calloc_ab-for-cs-relocs.patch