[Bridge] [PATCH] bridge: multicast: work around clang bug

David Miller davem at davemloft.net
Wed May 27 18:35:24 UTC 2020

From: Arnd Bergmann <arnd at arndb.de>
Date: Wed, 27 May 2020 15:51:13 +0200

> Clang-10 and clang-11 run into a corner case of the register
> allocator on 32-bit ARM, leading to excessive stack usage from
> register spilling:
> net/bridge/br_multicast.c:2422:6: error: stack frame size of 1472 bytes in function 'br_multicast_get_stats' [-Werror,-Wframe-larger-than=]
> Work around this by marking one of the internal functions as
> noinline_for_stack.
> Link: https://bugs.llvm.org/show_bug.cgi?id=45802#c9
> Signed-off-by: Arnd Bergmann <arnd at arndb.de>


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