On Wed, Apr 29, 2020 at 09:00:41PM +0200, Arnd Bergmann wrote: > gcc-10 points out that a code path exists where a pointer to a stack > variable may be passed back to the caller: > > net/netfilter/nfnetlink_osf.c: In function 'nf_osf_hdr_ctx_init': > cc1: warning: function may return address of local variable [-Wreturn-local-addr] > net/netfilter/nfnetlink_osf.c:171:16: note: declared here > 171 | struct tcphdr _tcph; > | ^~~~~ > > I am not sure whether this can happen in practice, but moving the > variable declaration into the callers avoids the problem. Applied, thanks.
