diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2016-03-14 17:53:57 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-03-14 20:10:29 +0300 |
| commit | efc21d95067f658a20e51e24c4c86d68f23b7f7f (patch) | |
| tree | 67836a34b5fd852007bfc3b0315e99ca767bc864 | |
| parent | 888506a967fe428bd776d2b9f540393963fc5bdd (diff) | |
| download | linux-efc21d95067f658a20e51e24c4c86d68f23b7f7f.tar.xz | |
vmxnet3: fix lock imbalance in vmxnet3_tq_xmit()
A recent bug fix rearranged the code in vmxnet3_tq_xmit() in a
way that left the error handling for oversized headers unlock
a lock that had not been taken yet. Gcc warns about the incorrect
use of the 'flags' variable because of that:
drivers/net/vmxnet3/vmxnet3_drv.c: In function 'vmxnet3_tq_xmit.constprop':
include/linux/spinlock.h:246:3: error: 'flags' may be used uninitialized in this function [-Werror=maybe-uninitialized]
This changes the error handling path to 'goto' the end of the function
beyond the lock/unlock pair.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: cec05562fb1d ("vmxnet3: avoid calling pskb_may_pull with interrupts disabled")
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/vmxnet3/vmxnet3_drv.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c b/drivers/net/vmxnet3/vmxnet3_drv.c index fc895d0e85d9..b2348f67b00a 100644 --- a/drivers/net/vmxnet3/vmxnet3_drv.c +++ b/drivers/net/vmxnet3/vmxnet3_drv.c @@ -1022,14 +1022,16 @@ vmxnet3_tq_xmit(struct sk_buff *skb, struct vmxnet3_tx_queue *tq, if (ctx.mss) { if (unlikely(ctx.eth_ip_hdr_size + ctx.l4_hdr_size > VMXNET3_MAX_TX_BUF_SIZE)) { - goto hdr_too_big; + tq->stats.drop_oversized_hdr++; + goto drop_pkt; } } else { if (skb->ip_summed == CHECKSUM_PARTIAL) { if (unlikely(ctx.eth_ip_hdr_size + skb->csum_offset > VMXNET3_MAX_CSUM_OFFSET)) { - goto hdr_too_big; + tq->stats.drop_oversized_hdr++; + goto drop_pkt; } } } @@ -1123,8 +1125,6 @@ vmxnet3_tq_xmit(struct sk_buff *skb, struct vmxnet3_tx_queue *tq, return NETDEV_TX_OK; -hdr_too_big: - tq->stats.drop_oversized_hdr++; unlock_drop_pkt: spin_unlock_irqrestore(&tq->tx_lock, flags); drop_pkt: |