David Miller wrote:
From: Patrick McHardy <[EMAIL PROTECTED]>
Date: Thu, 24 Jan 2008 07:41:08 +0100
David Miller wrote:
and nothing in that code path retakes the RTNL semaphore.
Actually we're always holding the rtnl during dumps, nlk->cb_mutex points
to rtnl_mutex in case of rtnetlink. It used to be held only during the first
->dump invocation and not on continuations, but I changed this a few
versions ago.
My bad. Thanks for the correction Patrick.
But continuations can occur on subsequent recvmsg() calls,
does it return to userspace with the mutex held? If so
I'm pretty sure that's not allowed.
No, the mutex is dropped between different ->dump invocations.
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