Messages in this thread | | | Date | Mon, 7 Oct 2013 20:39:02 -0300 | Subject | Re: [PATCH] drm: nouveau: fix nvbe leakage | From | Geyslan Gregório Bem <> |
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Felipe, thank you too.
I realized this after a code review.
Ben, what do you think?
Geyslan Gregório Bem hackingbits.com
2013/10/7 Felipe Pena <felipensp@gmail.com>: > Hi, > > On Mon, Oct 7, 2013 at 7:35 PM, Ben Skeggs <bskeggs@redhat.com> wrote: >> ----- Original Message ----- >>> From: "Geyslan G. Bem" <geyslan@gmail.com> >>> To: airlied@linux.ie, bskeggs@redhat.com, dri-devel@lists.freedesktop.org >>> Cc: linux-kernel@vger.kernel.org, kernel-br@googlegroups.com, "Geyslan G. Bem" <geyslan@gmail.com> >>> Sent: Tuesday, 8 October, 2013 8:14:26 AM >>> Subject: [PATCH] drm: nouveau: fix nvbe leakage >>> >>> Free memory allocated to nvbe when returning NULL. >>> >>> Signed-off-by: Geyslan G. Bem <geyslan@gmail.com> >> NACK. ttm_dma_tt_init() calls the destructor if it fails, which frees the memory. >> >> Ben. >> > > But ttm_tt_destroy() just handles the ttm_tt part from nvbe, the nvbe > pointer itself is not being free'd. > >>> --- >>> drivers/gpu/drm/nouveau/nouveau_sgdma.c | 3 +++ >>> 1 file changed, 3 insertions(+) >>> >>> diff --git a/drivers/gpu/drm/nouveau/nouveau_sgdma.c >>> b/drivers/gpu/drm/nouveau/nouveau_sgdma.c >>> index 0843ebc..af8b66d 100644 >>> --- a/drivers/gpu/drm/nouveau/nouveau_sgdma.c >>> +++ b/drivers/gpu/drm/nouveau/nouveau_sgdma.c >>> @@ -105,6 +105,9 @@ nouveau_sgdma_create_ttm(struct ttm_bo_device *bdev, >>> nvbe->ttm.ttm.func = &nv50_sgdma_backend; >>> >>> if (ttm_dma_tt_init(&nvbe->ttm, bdev, size, page_flags, dummy_read_page)) >>> + { >>> + kfree(nvbe); >>> return NULL; >>> + } >>> return &nvbe->ttm.ttm; >>> } >>> -- >>> 1.8.4 >>> >>> >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in >> the body of a message to majordomo@vger.kernel.org >> More majordomo info at http://vger.kernel.org/majordomo-info.html >> Please read the FAQ at http://www.tux.org/lkml/ > > > > -- > Regards, > Felipe Pena -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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