From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CE44F3222 for ; Mon, 13 Feb 2023 14:52:17 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id F2D03C433D2; Mon, 13 Feb 2023 14:52:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1676299937; bh=W/KkIFTsSoUuaAV758FiC3EJgPmgOjNN6EP6O9Ev/+U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=oKARSBQsfYDSKY4QUcPW0dxAeKYXFbGtrtDbxfPiTTrdTE9i/AxIF1UYNBWtHl7Nf kbrdONaXw8szphr6rj51eapMh6WoCvR3zEQsLxkNlGSUegJ+8//eObD7+IeU3QVSHR cCIENPtm+PSJk7++td5jPwOTLB2Fbh+GQIsSfmSY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Paolo Abeni , Michael Kelley , Jakub Kicinski Subject: [PATCH 6.1 001/114] hv_netvsc: Allocate memory in netvsc_dma_map() with GFP_ATOMIC Date: Mon, 13 Feb 2023 15:47:16 +0100 Message-Id: <20230213144742.284618491@linuxfoundation.org> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230213144742.219399167@linuxfoundation.org> References: <20230213144742.219399167@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Michael Kelley commit c6aa9d3b43cd11ac13a8220368a3b0483c6751d4 upstream. Memory allocations in the network transmit path must use GFP_ATOMIC so they won't sleep. Reported-by: Paolo Abeni Link: https://lore.kernel.org/lkml/8a4d08f94d3e6fe8b6da68440eaa89a088ad84f9.camel@redhat.com/ Fixes: 846da38de0e8 ("net: netvsc: Add Isolation VM support for netvsc driver") Cc: stable@vger.kernel.org Signed-off-by: Michael Kelley Link: https://lore.kernel.org/r/1675714317-48577-1-git-send-email-mikelley@microsoft.com Signed-off-by: Jakub Kicinski Signed-off-by: Greg Kroah-Hartman --- drivers/net/hyperv/netvsc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/hyperv/netvsc.c b/drivers/net/hyperv/netvsc.c index e02d1e3ef672..79f4e13620a4 100644 --- a/drivers/net/hyperv/netvsc.c +++ b/drivers/net/hyperv/netvsc.c @@ -1034,7 +1034,7 @@ static int netvsc_dma_map(struct hv_device *hv_dev, packet->dma_range = kcalloc(page_count, sizeof(*packet->dma_range), - GFP_KERNEL); + GFP_ATOMIC); if (!packet->dma_range) return -ENOMEM; -- 2.39.1