| commit | e8e5752dc0a56a01527055b0c37510b1d6b6b861 | |
| author | Krzysztof Halasa <khc@pm.waw.pl> | |
| Wed, 17 Dec 2008 08:24:13 +0000 (17 00:24 -0800) | ||
| committer | David S. Miller <davem@davemloft.net> | |
| Wed, 17 Dec 2008 08:24:13 +0000 (17 00:24 -0800) | ||
| tree | 65066b89fe67651445f25d586db615c3fbbcf81c | treesnapshot (tar.gz zip) |
| parent | 9a3de25544dadab1971847f28f33b1cd0d1770a6 | commitdiff |
net: kernel BUG at drivers/net/phy/mdio_bus.c:165!
kernel BUG at drivers/net/phy/mdio_bus.c:165!
Unable to handle kernel NULL pointer dereference at virtual address 00000000
How?
mdiobus_alloc() sets bus->state = MDIOBUS_ALLOCATED.
mdiobus_register() sets bus->state = MDIOBUS_REGISTERED but then can
fail (mdiobus_scan()) returning an error to the caller.
The caller aborts correctly with mdiobus_free() which does:
if (bus->state == MDIOBUS_ALLOCATED) {
kfree(bus);
return;
}
BUG_ON(bus->state != MDIOBUS_UNREGISTERED);
Signed-off-by: Krzysztof Halasa <khc@pm.waw.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
kernel BUG at drivers/net/phy/mdio_bus.c:165!
Unable to handle kernel NULL pointer dereference at virtual address 00000000
How?
mdiobus_alloc() sets bus->state = MDIOBUS_ALLOCATED.
mdiobus_register() sets bus->state = MDIOBUS_REGISTERED but then can
fail (mdiobus_scan()) returning an error to the caller.
The caller aborts correctly with mdiobus_free() which does:
if (bus->state == MDIOBUS_ALLOCATED) {
kfree(bus);
return;
}
BUG_ON(bus->state != MDIOBUS_UNREGISTERED);
Signed-off-by: Krzysztof Halasa <khc@pm.waw.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
| drivers/net/phy/mdio_bus.c | diffblobblamehistory |