Re: [PATCH net-next] modules: allow modprobe load regular elf binaries
From: Linus Torvalds <torvalds@linux-foundation.org>
Date: 2018-03-09 19:12:17
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lkml, netdev
On Fri, Mar 9, 2018 at 10:57 AM, David Miller [off-list ref] wrote:
Once the helper UMH is invoked, it runs asynchronously taking eBPF translation requests.
How?
Really. See my comment about mutual exclusion. The current patch is
*broken* because it doesn't handle it. Really.
Think of it this way - you may have now started *five* of those things
concurrently by mistake.
The actual module loading case never does that, because the actual
module loading case has per-module serialization that got
short-circuited.
How are you going to handle five processes doing the same setup concurrently?
Linus