2.6.32-longterm review patch. If anyone has any objections, please let me know. ------------------ in netconsole mode From: Nithin Nayak Sujir <nsujir@xxxxxxxxxxxx> [ Upstream commit 9c13cb8bb477a83b9a3c9e5a5478a4e21294a760 ] When netconsole is enabled, logging messages generated during tg3_open can result in a null pointer dereference for the uninitialized tg3 status block. Use the irq_sync flag to disable polling in the early stages. irq_sync is cleared when the driver is enabling interrupts after all initialization is completed. Signed-off-by: Nithin Nayak Sujir <nsujir@xxxxxxxxxxxx> Signed-off-by: Michael Chan <mchan@xxxxxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> Signed-off-by: Willy Tarreau <w@xxxxxx> --- drivers/net/tg3.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c index fd6622c..89aa69c 100644 --- a/drivers/net/tg3.c +++ b/drivers/net/tg3.c @@ -4994,6 +4994,9 @@ static void tg3_poll_controller(struct net_device *dev) int i; struct tg3 *tp = netdev_priv(dev); + if (tg3_irq_sync(tp)) + return; + for (i = 0; i < tp->irq_cnt; i++) tg3_interrupt(tp->napi[i].irq_vec, &tp->napi[i]); } @@ -13888,6 +13891,7 @@ static int __devinit tg3_init_one(struct pci_dev *pdev, tp->pm_cap = pm_cap; tp->rx_mode = TG3_DEF_RX_MODE; tp->tx_mode = TG3_DEF_TX_MODE; + tp->irq_sync = 1; if (tg3_debug > 0) tp->msg_enable = tg3_debug; -- 1.7.12.2.21.g234cd45.dirty -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html