From: Wei Yongjun <weiyongjun1@huawei.com>
To: Jeff Dike <jdike@addtoit.com>,
Richard Weinberger <richard@nod.at>,
"Anton Ivanov" <anton.ivanov@cambridgegreys.com>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Martin KaFai Lau <kafai@fb.com>, Song Liu <songliubraving@fb.com>
Cc: Wei Yongjun <weiyongjun1@huawei.com>,
<linux-um@lists.infradead.org>, <netdev@vger.kernel.org>,
<bpf@vger.kernel.org>, <kernel-janitors@vger.kernel.org>
Subject: [PATCH -next] um: vector: use GFP_ATOMIC under spin lock
Date: Thu, 28 Nov 2019 02:01:47 +0000 [thread overview]
Message-ID: <20191128020147.191893-1-weiyongjun1@huawei.com> (raw)
A spin lock is taken here so we should use GFP_ATOMIC.
Fixes: 9807019a62dc ("um: Loadable BPF "Firmware" for vector drivers")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
---
arch/um/drivers/vector_kern.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/um/drivers/vector_kern.c b/arch/um/drivers/vector_kern.c
index 92617e16829e..6ff0065a271d 100644
--- a/arch/um/drivers/vector_kern.c
+++ b/arch/um/drivers/vector_kern.c
@@ -1402,7 +1402,7 @@ static int vector_net_load_bpf_flash(struct net_device *dev,
kfree(vp->bpf->filter);
vp->bpf->filter = NULL;
} else {
- vp->bpf = kmalloc(sizeof(struct sock_fprog), GFP_KERNEL);
+ vp->bpf = kmalloc(sizeof(struct sock_fprog), GFP_ATOMIC);
if (vp->bpf == NULL) {
netdev_err(dev, "failed to allocate memory for firmware\n");
goto flash_fail;
@@ -1414,7 +1414,7 @@ static int vector_net_load_bpf_flash(struct net_device *dev,
if (request_firmware(&fw, efl->data, &vdevice->pdev.dev))
goto flash_fail;
- vp->bpf->filter = kmemdup(fw->data, fw->size, GFP_KERNEL);
+ vp->bpf->filter = kmemdup(fw->data, fw->size, GFP_ATOMIC);
if (!vp->bpf->filter)
goto free_buffer;
next reply other threads:[~2019-11-28 2:03 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-28 2:01 Wei Yongjun [this message]
2019-11-28 7:51 ` [PATCH -next] um: vector: use GFP_ATOMIC under spin lock Anton Ivanov
2019-11-28 8:06 ` Dan Carpenter
2019-11-28 8:18 ` Anton Ivanov
2019-11-28 8:37 ` Dan Carpenter
2019-11-28 9:22 ` Anton Ivanov
2019-11-28 8:41 ` Richard Weinberger
2019-11-28 9:24 ` Anton Ivanov
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