search for: tun_device_event

...est machine changes the queue length. I'll try to figure out what's happening, but if it's obvious to someone else from the stack, please let me know. [ 72.322236] BUG: unable to handle kernel NULL pointer dereference at 0000000000000010 [ 72.329993] IP: [<ffffffff8153c1a0>] tun_device_event+0x110/0x340 [ 72.336032] PGD 7f054f1067 PUD 7ef6f3f067 PMD 0 [ 72.340616] Oops: 0002 [#1] SMP DEBUG_PAGEALLOC [ 72.345498] gsmi: Log Shutdown Reason 0x03 [ 72.349541] Modules linked in: w1_therm wire cdc_acm ehci_pci ehci_hcd mlx4_en ib_uverbs mlx4_ib ib_core mlx4_core [ 72.359870] CPU: 1...

...est machine changes the queue length. I'll try to figure out what's happening, but if it's obvious to someone else from the stack, please let me know. [ 72.322236] BUG: unable to handle kernel NULL pointer dereference at 0000000000000010 [ 72.329993] IP: [<ffffffff8153c1a0>] tun_device_event+0x110/0x340 [ 72.336032] PGD 7f054f1067 PUD 7ef6f3f067 PMD 0 [ 72.340616] Oops: 0002 [#1] SMP DEBUG_PAGEALLOC [ 72.345498] gsmi: Log Shutdown Reason 0x03 [ 72.349541] Modules linked in: w1_therm wire cdc_acm ehci_pci ehci_hcd mlx4_en ib_uverbs mlx4_ib ib_core mlx4_core [ 72.359870] CPU: 1...

...let me know. Don't see anything obvious. I'm traveling, will look at it when I'm back unless it's fixed by then. Jason, any idea? > [ 72.322236] BUG: unable to handle kernel NULL pointer dereference > at 0000000000000010 > [ 72.329993] IP: [<ffffffff8153c1a0>] tun_device_event+0x110/0x340 > [ 72.336032] PGD 7f054f1067 PUD 7ef6f3f067 PMD 0 > [ 72.340616] Oops: 0002 [#1] SMP DEBUG_PAGEALLOC > [ 72.345498] gsmi: Log Shutdown Reason 0x03 > [ 72.349541] Modules linked in: w1_therm wire cdc_acm ehci_pci > ehci_hcd mlx4_en ib_uverbs mlx4_ib ib_core mlx4_c...

...n->tfiles[i]); + arrays[i] = &tfile->tx_array; + } + list_for_each_entry(tfile, &tun->disabled, next) + arrays[i++] = &tfile->tx_array; + + ret = skb_array_resize_multiple(arrays, n, + dev->tx_queue_len, GFP_KERNEL); + + kfree(arrays); + return ret; +} + +static int tun_device_event(struct notifier_block *unused, + unsigned long event, void *ptr) +{ + struct net_device *dev = netdev_notifier_info_to_dev(ptr); + struct tun_struct *tun = netdev_priv(dev); + + switch (event) { + case NETDEV_CHANGE_TX_QUEUE_LEN: + if (tun_queue_resize(tun)) + return NOTIFY_BAD; + break;...

Hi all: This series tries to switch to use skb array in tun. This is used to eliminate the spinlock contention between producer and consumer. The conversion was straightforward: just introdce a tx skb array and use it instead of sk_receive_queue. A minor issue is to keep the tx_queue_len behaviour, since tun used to use it for the length of sk_receive_queue. This is done through: - add the

Hi all: This series tries to switch to use skb array in tun. This is used to eliminate the spinlock contention between producer and consumer. The conversion was straightforward: just introdce a tx skb array and use it instead of sk_receive_queue. A minor issue is to keep the tx_queue_len behaviour, since tun used to use it for the length of sk_receive_queue. This is done through: - add the

Hi all: This series tries to switch to use skb array in tun. This is used to eliminate the spinlock contention between producer and consumer. The conversion was straightforward: just introdce a tx skb array and use it instead of sk_receive_queue. A minor issue is to keep the tx_queue_len behaviour, since tun used to use it for the length of sk_receive_queue. This is done through: - add the

Hi all: This series tries to switch to use skb array in tun. This is used to eliminate the spinlock contention between producer and consumer. The conversion was straightforward: just introdce a tx skb array and use it instead of sk_receive_queue. A minor issue is to keep the tx_queue_len behaviour, since tun used to use it for the length of sk_receive_queue. This is done through: - add the