From: Michael Kelley <mikelley@microsoft.com>
To: kys@microsoft.com, haiyangz@microsoft.com, wei.liu@kernel.org,
decui@microsoft.com, davem@davemloft.net, edumazet@google.com,
kuba@kernel.org, pabeni@redhat.com, netdev@vger.kernel.org,
linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: mikelley@microsoft.com, stable@vger.kernel.org
Subject: [PATCH net 1/1] hv_netvsc: Allocate memory in netvsc_dma_map() with GFP_ATOMIC
Date: Mon, 6 Feb 2023 12:11:57 -0800 [thread overview]
Message-ID: <1675714317-48577-1-git-send-email-mikelley@microsoft.com> (raw)
Memory allocations in the network transmit path must use GFP_ATOMIC
so they won't sleep.
Reported-by: Paolo Abeni <pabeni@redhat.com>
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 <mikelley@microsoft.com>
---
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 e02d1e3..79f4e13 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;
--
1.8.3.1
next reply other threads:[~2023-02-06 20:13 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-06 20:11 Michael Kelley [this message]
2023-02-08 5:30 ` [PATCH net 1/1] hv_netvsc: Allocate memory in netvsc_dma_map() with GFP_ATOMIC patchwork-bot+netdevbpf
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