| From | Kamal Mostafa <> | Subject | [PATCH 3.19.y-ckt 13/92] drm/radeon: Use drm_calloc_ab for CS relocs | Date | Tue, 26 May 2015 08:40:17 -0700 |
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3.19.8-ckt1 -stable review patch. If anyone has any objections, please let me know.
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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: Kamal Mostafa <kamal@canonical.com> --- drivers/gpu/drm/radeon/radeon_cs.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/radeon/radeon_cs.c b/drivers/gpu/drm/radeon/radeon_cs.c index 26e7d28..204a64a 100644 --- 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(struct radeon_cs_parser *p) 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 radeon_cs_parser *parser, int error, bo } } 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); -- 1.9.1
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