Bug#599816: Nested GRE locking bug

2010-10-25 Thread David Miller
From: Eric Dumazet eric.duma...@gmail.com Date: Tue, 19 Oct 2010 11:02:36 +0200 Le mardi 19 octobre 2010 à 01:53 -0700, David Miller a écrit : From: Eric Dumazet eric.duma...@gmail.com Date: Thu, 14 Oct 2010 06:11:59 +0200 net-next-2.6 contains a fix for this, adding the perc_cpu

Bug#599816: Nested GRE locking bug

2010-10-25 Thread Eric Dumazet
Le lundi 25 octobre 2010 à 12:53 -0700, David Miller a écrit : I'll commit the following to upstream, and submit a combined patch to -stable. net: Increase xmit RECURSION_LIMIT to 10. Three is definitely too low, and we know from reports that GRE tunnels stacked as

Bug#599816: Nested GRE locking bug

2010-10-19 Thread David Miller
From: Eric Dumazet eric.duma...@gmail.com Date: Thu, 14 Oct 2010 06:11:59 +0200 net-next-2.6 contains a fix for this, adding the perc_cpu xmit_recursion limit. We might push it to net-2.6 We need to think a bit more about this. We are essentially now saying that one can only configure tunnels

Bug#599816: Nested GRE locking bug

2010-10-19 Thread Eric Dumazet
Le mardi 19 octobre 2010 à 01:53 -0700, David Miller a écrit : From: Eric Dumazet eric.duma...@gmail.com Date: Thu, 14 Oct 2010 06:11:59 +0200 net-next-2.6 contains a fix for this, adding the perc_cpu xmit_recursion limit. We might push it to net-2.6 We need to think a bit more about

Bug#599816: Nested GRE locking bug

2010-10-13 Thread Ben Hutchings
Beatrice Barbe reported a reproducible crash after creating large numbers of nested GRE tunnels and then pinging with the source address forced. I was able to reproduce this using net-2.6. I'm attaching the kernel config I used and a script to reproduce this based on the script she provided.

Bug#599816: Nested GRE locking bug

2010-10-13 Thread Eric Dumazet
Le jeudi 14 octobre 2010 à 05:00 +0100, Ben Hutchings a écrit : Beatrice Barbe reported a reproducible crash after creating large numbers of nested GRE tunnels and then pinging with the source address forced. I was able to reproduce this using net-2.6. I'm attaching the kernel config I used