[PATCH] Bus error on ARMv7 when using OSPF

[Ondrej Zajicek]

On Mon, Dec 16, 2024 at 06:00:10PM +0100, nick via Bird-users wrote:
> Hi everyone,
> 
> I’m bringing up this old thread from three years ago about the OSPF bus
> error [0]. Back then, we ran into an issue similar to the BGP bus error [1]
> and ended up applying a downstream patch in the OpenWrt routing feed [2] to
> fix it.

Hello

Thanks for bringing this up, it dropped off the radar.

I would prefer to not merge the OpenWRT patch, as PACKED just hides the
alignment issue.

On the first look it does not seems to be caused by slab allocation like
your crash in BGP, so it would require further investigation.


> We’ve been carrying that patch ever since, and it seems to work fine for the
> OSPF error (I don’t use OSPF and haven’t personally tested the fix). Since
> this is so similar to the BGP bus error, I was wondering if we could finally
> look into getting a fix for the OSPF issue upstream. It would help avoid
> having to keep this downstream patch around forever.
> 
> [0] - https://bird.network.cz/pipermail/bird-users/2021-June/015545.html
> [1] -
> http://trubka.network.cz/pipermail/bird-users/2024-December/017944.html
> [2] - https://github.com/openwrt/routing/commit/f4251ccf69ad70b46c060be62eb39ebc36c47ac6
> 
> Bests,
> Nick

-- 
Elen sila lumenn' omentielvo

Ondrej 'Santiago' Zajicek (email: santiago at crfreenet.org)
"To err is human -- to blame it on a computer is even more so."