Messages in this thread | | | Subject | Re: bridge/netfilter: regression in 2.6.39.1 | From | Eric Dumazet <> | Date | Fri, 03 Jun 2011 21:34:02 +0200 |
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Le vendredi 03 juin 2011 à 21:21 +0200, Alexander Holler a écrit : > Hello, > > I'm getting a oops in the bridge code in br_change_mtu() with 2.6.39.1. > The patch below seems to fix that. > > I'm not sure about the usage of dst_cow_metrics_generic() in > fake_dst_ops, but after having a quick look at it seems to be ok to use > that here. > > Regards, > > Alexander > > ----- > From 3c1d5951af73389798afeea672ec224e195b8e8d Mon Sep 17 00:00:00 2001 > From: Alexander Holler <holler@ahsoftware.de> > Date: Fri, 3 Jun 2011 20:43:06 +0200 > Subject: [PATCH] bridge: add dst_cow_metrics_generic to fake_dst_ops > > Commit 42923465fb8d025a2b5153f2e7ab1e6e1058bf00 does here what it > should prevent, it introduces NULL a dereference. >
I cant find this commit in known trees. Could you give the real commit id and its title ?
> The above commit uses dst_init_metrics() which sets the metrics as > read only. As result br_change_mtu() dies in dst_metric_set() > which calls dst_metrics_write_ptr() which calls > dst->ops->cow_metrics() if the metrics are read only. > --- > net/bridge/br_netfilter.c | 1 + > 1 files changed, 1 insertions(+), 0 deletions(-) > > diff --git a/net/bridge/br_netfilter.c b/net/bridge/br_netfilter.c > index 5f9c091..de982a1 100644 > --- a/net/bridge/br_netfilter.c > +++ b/net/bridge/br_netfilter.c > @@ -107,6 +107,7 @@ static void fake_update_pmtu(struct dst_entry *dst, > u32 mtu) > static struct dst_ops fake_dst_ops = { > .family = AF_INET, > .protocol = cpu_to_be16(ETH_P_IP), > + .cow_metrics = dst_cow_metrics_generic, > .update_pmtu = fake_update_pmtu, > }; >
Your patch is mangled (white spaces instead of tabulations)
Thanks
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