Re: [-next] fib_dump_info() suspicious RCU usage

[Andy Gospodarek]

On Fri, Jun 26, 2015 at 06:35:40PM +0900, Sergey Senozhatsky wrote:
> Hello,
> 
> Since 0eeb075fad736 ('net: ipv4 sysctl option to ignore routes when nexthop
> link is down') fib_dump_info() and fib_sync_up() are using __in_dev_get_rcu(),
> which requires (missing) RCU read side protection.

Yep, I can reproduce this now.  Thanks for reporting.

I'll take a look and should be able to post an easy fix quickly.
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