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| author | Stephen Hemminger <shemminger@vyatta.com> | 2009-02-26 06:49:24 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-03-03 00:47:46 -0800 |
| commit | 5a5990d3090b03745a9548a6f5edef02095675cf (patch) | |
| tree | d8d08f214886b544b706fa491f437792846c3658 /net | |
| parent | 07555c9880da3e2e96e5eae00a03b44cc076deaf (diff) | |
| download | lwn-5a5990d3090b03745a9548a6f5edef02095675cf.tar.gz lwn-5a5990d3090b03745a9548a6f5edef02095675cf.zip | |
net: Avoid race between network down and sysfs
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/net-sysfs.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c index 6ac29a46e23e..484f58750eba 100644 --- a/net/core/net-sysfs.c +++ b/net/core/net-sysfs.c @@ -77,7 +77,9 @@ static ssize_t netdev_store(struct device *dev, struct device_attribute *attr, if (endp == buf) goto err; - rtnl_lock(); + if (!rtnl_trylock()) + return -ERESTARTSYS; + if (dev_isalive(net)) { if ((ret = (*set)(net, new)) == 0) ret = len; |