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Date: Thu, 18 Jul 2013 19:24:40 -0700 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Mathias Nyman <mathias.nyman@...ux.intel.com>, Sarah Sharp <sarah.a.sharp@...ux.intel.com>, John Youn <johnyoun@...opsys.com> Subject: [ 08/24] xhci: check for failed dma pool allocation 3.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Mathias Nyman <mathias.nyman@...ux.intel.com> commit 025f880cb2e4d7218d0422d4b07bea1a68959c38 upstream. Fail and free the container context in case dma_pool_alloc() can't allocate the raw context data part of it This patch should be backported to kernels as old as 2.6.31, that contain the commit d115b04818e57bdbc7ccde4d0660b15e33013dc8 "USB: xhci: Support for 64-byte contexts". Signed-off-by: Mathias Nyman <mathias.nyman@...ux.intel.com> Signed-off-by: Sarah Sharp <sarah.a.sharp@...ux.intel.com> Cc: John Youn <johnyoun@...opsys.com> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- drivers/usb/host/xhci-mem.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -369,6 +369,10 @@ static struct xhci_container_ctx *xhci_a ctx->size += CTX_SIZE(xhci->hcc_params); ctx->bytes = dma_pool_alloc(xhci->device_pool, flags, &ctx->dma); + if (!ctx->bytes) { + kfree(ctx); + return NULL; + } memset(ctx->bytes, 0, ctx->size); return ctx; } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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