forked from luck/tmp_suning_uos_patched
etherdevice: Adjust ether_addr* prototypes to silence -Wstringop-overead
commit 2618a0dae09ef37728dab89ff60418cbe25ae6bd upstream. With GCC 12, -Wstringop-overread was warning about an implicit cast from char[6] to char[8]. However, the extra 2 bytes are always thrown away, alignment doesn't matter, and the risk of hitting the edge of unallocated memory has been accepted, so this prototype can just be converted to a regular char *. Silences: net/core/dev.c: In function ‘bpf_prog_run_generic_xdp’: net/core/dev.c:4618:21: warning: ‘ether_addr_equal_64bits’ reading 8 bytes from a region of size 6 [-Wstringop-overread] 4618 | orig_host = ether_addr_equal_64bits(eth->h_dest, > skb->dev->dev_addr); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ net/core/dev.c:4618:21: note: referencing argument 1 of type ‘const u8[8]’ {aka ‘const unsigned char[8]’} net/core/dev.c:4618:21: note: referencing argument 2 of type ‘const u8[8]’ {aka ‘const unsigned char[8]’} In file included from net/core/dev.c:91: include/linux/etherdevice.h:375:20: note: in a call to function ‘ether_addr_equal_64bits’ 375 | static inline bool ether_addr_equal_64bits(const u8 addr1[6+2], | ^~~~~~~~~~~~~~~~~~~~~~~ Reported-by: Marc Kleine-Budde <mkl@pengutronix.de> Tested-by: Marc Kleine-Budde <mkl@pengutronix.de> Link: https://lore.kernel.org/netdev/20220212090811.uuzk6d76agw2vv73@pengutronix.de Cc: Jakub Kicinski <kuba@kernel.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: netdev@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: David S. Miller <davem@davemloft.net> Cc: Khem Raj <raj.khem@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
1052f9bce6
commit
08ad7a770e
|
@ -127,7 +127,7 @@ static inline bool is_multicast_ether_addr(const u8 *addr)
|
|||
#endif
|
||||
}
|
||||
|
||||
static inline bool is_multicast_ether_addr_64bits(const u8 addr[6+2])
|
||||
static inline bool is_multicast_ether_addr_64bits(const u8 *addr)
|
||||
{
|
||||
#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64
|
||||
#ifdef __BIG_ENDIAN
|
||||
|
@ -352,8 +352,7 @@ static inline bool ether_addr_equal(const u8 *addr1, const u8 *addr2)
|
|||
* Please note that alignment of addr1 & addr2 are only guaranteed to be 16 bits.
|
||||
*/
|
||||
|
||||
static inline bool ether_addr_equal_64bits(const u8 addr1[6+2],
|
||||
const u8 addr2[6+2])
|
||||
static inline bool ether_addr_equal_64bits(const u8 *addr1, const u8 *addr2)
|
||||
{
|
||||
#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64
|
||||
u64 fold = (*(const u64 *)addr1) ^ (*(const u64 *)addr2);
|
||||
|
|
Loading…
Reference in New Issue
Block a user