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bonding: Do not call free_netdev for already registered device.

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If the call to bond_create_sysfs_entry in bond_create fails, the
proper rollback is to call unregister_netdevice, not free_netdev.
Otherwise - kernel BUG at net/core/dev.c:4057!

Checked with artificial failures injected into bond_create_sysfs_entry.

Pavel's original patch modified by Jay Vosburgh to move code around
for clarity (remove goto-hopping within the unwind block).

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Pavel Emelyanov 2008-05-02 17:49:37 -07:00 committed by Jeff Garzik
parent 9d1045ad68
commit 822973ba79
1 changed files with 3 additions and 1 deletions
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4
drivers/net/bonding/bond_main.c
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@ -4936,7 +4936,9 @@ int bond_create(char *name, struct bond_params *params, struct bonding **newbond
if (res < 0) { if (res < 0) {
rtnl_lock(); rtnl_lock();
down_write(&bonding_rwsem); down_write(&bonding_rwsem);
goto out_bond; bond_deinit(bond_dev);
unregister_netdevice(bond_dev);
goto out_rtnl;
} }
return 0; return 0;