caif: reduce stack size with KASAN
When CONFIG_KASAN is set, we can use relatively large amounts of kernel stack space: net/caif/cfctrl.c:555:1: warning: the frame size of 1600 bytes is larger than 1280 bytes [-Wframe-larger-than=] This adds convenience wrappers around cfpkt_extr_head(), which is responsible for most of the stack growth. With those wrapper functions, gcc apparently starts reusing the stack slots for each instance, thus avoiding the problem. Signed-off-by: NArnd Bergmann <arnd@arndb.de> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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