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(parent: 5007392) | patch
net: Fix devinet_sysctl_forward
authorEric W. Biederman <ebiederm@xmission.com>
Wed, 13 May 2009 16:59:21 +0000 (16:59 +0000)
committerDavid S. Miller <davem@davemloft.net>
Tue, 19 May 2009 05:15:58 +0000 (22:15 -0700)
commit9b8adb5ea005fe73acd5dd58f9bd47eafa74c9d1
treeee83f80abf9d3fab5b2ce66648a024e0d44fd770tree | snapshot
parent5007392d8512e666107dc356d4c2e05627b9029bcommit | diff
net: Fix devinet_sysctl_forward

sysctls are unregistered with the rntl_lock held making
it unsafe to unconditionally grab the the rtnl_lock.  Instead
we need to call rtnl_trylock and restart the system call
if we can not grab it.  Otherwise we could deadlock at unregistration
time.

Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/ipv4/devinet.c diff | blob | history
John Crispins staging tree