diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2020-11-01 17:54:13 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2020-11-01 17:54:13 +0100 |
| commit | 17bb415fefedb74d2ff02656cf59e4e3ab92ee20 (patch) | |
| tree | 0ada27d370a1e2bfab1b57df9bb02a1a20371662 /net/packet/af_packet.c | |
| parent | ceb2465c51195967f11f6507538579816ac67cb8 (diff) | |
| parent | d95bdca75b3fb41bf185efe164e05aed820081a5 (diff) | |
Merge tag 'irqchip-fixes-5.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent
Pull irqchip fixes from Marc Zyngier:
- A couple of fixes after the IPI as IRQ patches (Kconfig, bcm2836)
- Two SiFive PLIC fixes (irq_set_affinity, hierarchy handling)
- "unmapped events" handling for the ti-sci-inta controller
- Tidying up for the irq-mst driver (static functions, Kconfig)
- Small cleanup in the Renesas irqpin driver
- STM32 exti can now handle LP timer events
Diffstat (limited to 'net/packet/af_packet.c')
| -rw-r--r-- | net/packet/af_packet.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c index 479c257ded73..2b33e977a905 100644 --- a/net/packet/af_packet.c +++ b/net/packet/af_packet.c @@ -2170,7 +2170,8 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev, int skb_len = skb->len; unsigned int snaplen, res; unsigned long status = TP_STATUS_USER; - unsigned short macoff, netoff, hdrlen; + unsigned short macoff, hdrlen; + unsigned int netoff; struct sk_buff *copy_skb = NULL; struct timespec64 ts; __u32 ts_status; @@ -2239,6 +2240,10 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev, } macoff = netoff - maclen; } + if (netoff > USHRT_MAX) { + atomic_inc(&po->tp_drops); + goto drop_n_restore; + } if (po->tp_version <= TPACKET_V2) { if (macoff + snaplen > po->rx_ring.frame_size) { if (po->copy_thresh && @@ -4061,7 +4066,7 @@ static int packet_notifier(struct notifier_block *this, case NETDEV_UNREGISTER: if (po->mclist) packet_dev_mclist_delete(dev, &po->mclist); - /* fallthrough */ + fallthrough; case NETDEV_DOWN: if (dev->ifindex == po->ifindex) { |