On 11/20/2015 05:58 AM, Andrew wrote:
Hi all.
Today some BRASes on 4.1.12 kernel were crashed.
Here's crash traces: http://pastebin.com/p68hNS8R
http://pastebin.com/36ieRAM2 http://pastebin.com/3BRTVEB6
On 3.2 kernel same hardware works OK, troubles were noticed after kernel
upgrade.
What additional info is needed?
Looking over the traces there seem to be two areas called out.
The first is the fib_trie resize BUG_ON that was triggered due to the
parent and child not being associated. I think that might be due to
memory corruption as I cannot find any spots where we are resizing
without correctly setting up the parent-child relationship of the nodes
first.
The other spot that is showing up is ppp_shutdown_interface and it's
related path. It looks like there are a couple of patches you could try
back-porting to see if it resolves the issue. If they do then perhaps
they should be considered candidates for stable:
8cb775bc0a3 ("ppp: fix device unregistration upon netns deletion")
58a89ecaca5 ("ppp: fix lockdep splat in ppp_dev_uninit()")
- Alex
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