Re: [PATCH] xfrm : lock input tasklet skb queue

On Mon, Oct 21, 2019 at 09:31:13AM -0700, Tom Rix wrote:

When preempt rt is full, softirq and interrupts run in kthreads. So it
is possible for the tasklet to sleep and for its queue to get modified
while it sleeps.

This is ridiculous.  The network stack is full of assumptions
like this.  So I think we need to fix preempt rt instead because
you can't make a major change like this without auditing the entire
kernel first rather than relying on a whack-a-mole approach.

Cheers,
-- 
Email: Herbert Xu [off-list ref]
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