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SubjectRe: 2.2.17 --- extreme format string weirdness in /proc
Date
On 30 Sep 2000 15:09:10 +0100, 
Nix <nix@esperi.demon.co.uk> wrote:
>: loki:/# cat /proc/net/dev
>: Inter-| Receive | Transmit
>: face |bytes packets errs drop fifo frame compressed multicast|bytes packets errs drop fifo colls carrier compressed
>: lo:%lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu
>: eth0:%lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu

I have seen that symptom after kernel stack overflow. For some reason
it starts printing the format strings instead of substituting them. It
is one of my triggers for "oh, oh, what just went recursive?".

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