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| author | Subash Abhinov Kasiviswanathan <subashab@codeaurora.org> | 2018-10-02 18:52:03 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-10-18 09:18:08 +0200 |
| commit | 095a5309c6c6dac7947a32a85b954b26517591a2 (patch) | |
| tree | 5bad7f08004316b9e5c175ff6997c31b30a6b1fe /drivers/net/ethernet | |
| parent | 9db5df4c92dd2f5e6fe7356a3115993729b6dc36 (diff) | |
| download | linux-stable-095a5309c6c6dac7947a32a85b954b26517591a2.tar.gz linux-stable-095a5309c6c6dac7947a32a85b954b26517591a2.tar.bz2 linux-stable-095a5309c6c6dac7947a32a85b954b26517591a2.zip | |
net: qualcomm: rmnet: Fix incorrect allocation flag in receive path
[ Upstream commit ec405641e2b73160e26ef17580d0cf28565d146c ]
The incoming skb needs to be reallocated in case the headroom
is not sufficient to adjust the ethernet header. This allocation
needs to be atomic otherwise it results in this splat
[<600601bb>] ___might_sleep+0x185/0x1a3
[<603f6314>] ? _raw_spin_unlock_irqrestore+0x0/0x27
[<60069bb0>] ? __wake_up_common_lock+0x95/0xd1
[<600602b0>] __might_sleep+0xd7/0xe2
[<60065598>] ? enqueue_task_fair+0x112/0x209
[<600eea13>] __kmalloc_track_caller+0x5d/0x124
[<600ee9b6>] ? __kmalloc_track_caller+0x0/0x124
[<602696d5>] __kmalloc_reserve.isra.34+0x30/0x7e
[<603f629b>] ? _raw_spin_lock_irqsave+0x0/0x3d
[<6026b744>] pskb_expand_head+0xbf/0x310
[<6025ca6a>] rmnet_rx_handler+0x7e/0x16b
[<6025c9ec>] ? rmnet_rx_handler+0x0/0x16b
[<6027ad0c>] __netif_receive_skb_core+0x301/0x96f
[<60033c17>] ? set_signals+0x0/0x40
[<6027bbcb>] __netif_receive_skb+0x24/0x8e
Fixes: 74692caf1b0b ("net: qualcomm: rmnet: Process packets over ethernet")
Signed-off-by: Sean Tranchetti <stranche@codeaurora.org>
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/net/ethernet')
| -rw-r--r-- | drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c b/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c index 1f98d65473cf..11167abe5934 100644 --- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c +++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c @@ -113,7 +113,7 @@ rmnet_map_ingress_handler(struct sk_buff *skb, struct sk_buff *skbn; if (skb->dev->type == ARPHRD_ETHER) { - if (pskb_expand_head(skb, ETH_HLEN, 0, GFP_KERNEL)) { + if (pskb_expand_head(skb, ETH_HLEN, 0, GFP_ATOMIC)) { kfree_skb(skb); return; } |