Denis Efremov <efremov@xxxxxxxxx> wrote: > memcpy() in wmi_set_ie() and wmi_update_ft_ies() is called with > src == NULL and len == 0. This is an undefined behavior. Fix it > by checking "ie_len > 0" before the memcpy() calls. > > As suggested by GCC documentation: > "The pointers passed to memmove (and similar functions in <string.h>) > must be non-null even when nbytes==0, so GCC can use that information > to remove the check after the memmove call." [1] > > [1] https://gcc.gnu.org/gcc-4.9/porting_to.html > > Cc: Maya Erez <merez@xxxxxxxxxxxxxx> > Cc: Kalle Valo <kvalo@xxxxxxxxxxxxxx> > Cc: "David S. Miller" <davem@xxxxxxxxxxxxx> > Cc: stable@xxxxxxxxxxxxxxx > Signed-off-by: Denis Efremov <efremov@xxxxxxxxx> > Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxx> Patch applied to ath-next branch of ath.git, thanks. 2c840676be8f wil6210: check len before memcpy() calls -- https://patchwork.kernel.org/patch/11168621/ https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
