The problem is caught by this WARN_ON(len > skb->len) in tcp_fragment():
[] warn_slowpath_null+0x1a/0x20
[] tcp_fragment+0x2a0/0x2b0
[] tcp_mark_head_lost+0x196/0x230
[] tcp_update_scoreboard+0x4d/0x80
[] tcp_fastretrans_alert+0x6ac/0xa90
[] tcp_ack+0x9d4/0x10e0
[] tcp_rcv_established+0x309/0x7e0
On Fri, 2015-06-05 at 17:46 -0700, Martin KaFai Lau wrote:
> The problem is caught by this WARN_ON(len > skb->len) in tcp_fragment():
>
> [] warn_slowpath_null+0x1a/0x20
> [] tcp_fragment+0x2a0/0x2b0
> [] tcp_mark_head_lost+0x196/0x230
> [] tcp_update_scoreboard+0x4d/0x80
> [] tcp_fastretrans_aler
On Fri, Jun 05, 2015 at 06:11:33PM -0700, Eric Dumazet wrote:
> On Fri, 2015-06-05 at 17:46 -0700, Martin KaFai Lau wrote:
> > The problem is caught by this WARN_ON(len > skb->len) in tcp_fragment():
> >
> > [] warn_slowpath_null+0x1a/0x20
> > [] tcp_fragment+0x2a0/0x2b0
> > [] tcp_mark_head_lost+
On Mon, 2015-06-08 at 10:58 -0700, Martin KaFai Lau wrote:
> It seems the invariant does not hold at this point also.
> Should the invariant fix be something for net-next? or Would you like
> to post a patch for it?
This patch definitely can target net-next, it is not a new regression.
Once full
On Mon, 2015-06-08 at 11:11 -0700, Eric Dumazet wrote:
> On Mon, 2015-06-08 at 10:58 -0700, Martin KaFai Lau wrote:
>
> > It seems the invariant does not hold at this point also.
> > Should the invariant fix be something for net-next? or Would you like
> > to post a patch for it?
>
> This patch d
On Tue, Jun 09, 2015 at 10:06:25AM -0700, Eric Dumazet wrote:
> I've been working on this, but still can get the bug triggering in
> tcp_fragment(), no matter what (Neal patch , yours, mine...)
Can you describe the test case that can reproduce it?
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On Tue, 2015-06-09 at 10:45 -0700, Martin KaFai Lau wrote:
> On Tue, Jun 09, 2015 at 10:06:25AM -0700, Eric Dumazet wrote:
> > I've been working on this, but still can get the bug triggering in
> > tcp_fragment(), no matter what (Neal patch , yours, mine...)
> Can you describe the test case that ca
