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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