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can: should not use __dev_get_by_index() without locks
authorEric Dumazet <eric.dumazet@gmail.com>
Fri, 6 Nov 2009 00:23:01 +0000 (00:23 +0000)
committerDavid S. Miller <davem@davemloft.net>
Sun, 8 Nov 2009 08:33:43 +0000 (00:33 -0800)
commit6755aebaaf9fc5416acfd4578ab7a1e122ecbc74
tree09f23419b097b15e7c36954cb98bdf28cdfa5af1tree | snapshot
parentcc05368c52fed7d9efa0f56c5270e95bb569713ecommit | diff
can: should not use __dev_get_by_index() without locks

bcm_proc_getifname() is called with RTNL and dev_base_lock
not held. It calls __dev_get_by_index() without locks, and
this is illegal (might crash)

Close the race by holding dev_base_lock and copying dev->name
in the protected section.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Oliver Hartkopp <oliver@hartkopp.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/can/bcm.c diff | blob | history
Full containers within linux kernel