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(parent: 2657440) | patch
net: FIX bonding sysfs rtnl_lock deadlock
authorEric W. Biederman <ebiederm@xmission.com>
Wed, 13 May 2009 17:02:50 +0000 (17:02 +0000)
committerDavid S. Miller <davem@davemloft.net>
Tue, 19 May 2009 05:16:00 +0000 (22:16 -0700)
commit496a60cdcd5d0d884dddf6c3b4ea912923a70f13
treedd7c3e4e61d4c4bead3c7bd3db17401431e6d87etree | snapshot (tar.gz zip)
parent26574401fef6766f6c3ca25b5c13febe662d2a32commit | diff
net: FIX bonding sysfs rtnl_lock deadlock

Sysfs files for a network device can not unconditionally take the
rtnl_lock as the bonding sysfs files do.  If someone accesses those
sysfs files while the network device is being unregistered with the
rtnl_lock held we will deadlock.

So use trylock and restart_syscall to avoid this problem.

Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/bonding/bond_sysfs.c diff | blob | blame | history