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SubjectRe: [PATCH] net: stmmac: Don't call _irqoff() with hardirqs enabled
On Fri, Oct 09, 2020 at 10:59:45AM +0100, John Keeping wrote:
> No, it's not, although I would have saved several days debugging if it
> was! I backported the lockdep warning to prove that it caught this
> issue.
>
> The evidence it is possible to see on vanilla 5.4.x is:
>
> $ trace-cmd report -l
> irq/43-e-280 0....2 74.017658: softirq_raise: vec=3 [action=NET_RX]
>
> Note the missing "d" where this should be "0d...2" to indicate hardirqs
> disabled.

Cool, makes sense.

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