On Thu, Dec 22, 2022 at 05:25:13PM +0100, Uwe Kleine-König wrote: > When compiling arm64 allmodconfig with gcc 10.2.1 I get > > drivers/crypto/caam/desc_constr.h: In function ‘append_data.constprop’: > include/linux/fortify-string.h:57:29: error: argument 2 null where non-null expected [-Werror=nonnull] > > Fix this by skipping the memcpy if data is NULL and add a BUG_ON instead > that triggers on a problematic call that is now prevented to trigger. > After data == NULL && len != 0 is known to be false, logically > > if (len) > memcpy(...) > > could be enough to know that memcpy is not called with dest=NULL, but > gcc doesn't seem smart enough for that conclusion. gcc 12 doesn't have a > problem with the original code. > > Signed-off-by: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx> > --- > drivers/crypto/caam/desc_constr.h | 8 +++++++- > 1 file changed, 7 insertions(+), 1 deletion(-) Does this patch fix your problem? https://lore.kernel.org/all/Y4mHjKXnF%2F4Pfw5I@xxxxxxxxxxxxxxxxxxx/ If not please send me your kconfig file. Thanks, -- Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
