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SubjectRe: [PATCH 4.4 106/124] netlink: Do not subscribe to non-existent groups
From: Dmitry Safonov <>
Date: Sun, 05 Aug 2018 00:26:38 +0100

> Thanks for the testing, sorry again for the breakage.
> Will send the patch shortly (with sizeof(unsigned long long) instead of
> hard-coded 64). Hopefully, not too late.

'groups' is "long unsigned int" not "unsigned long long"

long unsigned int groups = nladdr->nl_groups;

And nladdr->nl_groups is specified as "__u32"

So the size of the relevant bits is actually strictly 32-bit.

This makes also the "ULL" in your constant specification incorrect as

So much crazy stuff going on here :-/

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