OpenCloudOS-Kernel/drivers/staging/rtl8723bs
Arnd Bergmann 14b6cff54e staging: rtl8723bs: avoid bogus gcc warning
gcc gets confused by some of the type casts and produces an
apparently senseless warning about an out-of-bound memcpy to
an unrelated array in the same structure:

drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c: In function 'rtw_cfg80211_ap_set_encryption':
cc1: error: writing 8 bytes into a region of size 0 [-Werror=stringop-overflow=]
In file included from drivers/staging/rtl8723bs/include/drv_types.h:32,
                 from drivers/staging/rtl8723bs/os_dep/ioctl_cfg80211.c:10:
drivers/staging/rtl8723bs/include/rtw_security.h:98:15: note: at offset [184, 4264] into destination object 'dot11AuthAlgrthm' of size 4
   98 |         u32   dot11AuthAlgrthm;         /*  802.11 auth, could be open, shared, 8021x and authswitch */
      |               ^~~~~~~~~~~~~~~~
cc1: error: writing 8 bytes into a region of size 0 [-Werror=stringop-overflow=]
drivers/staging/rtl8723bs/include/rtw_security.h:98:15: note: at offset [264, 4344] into destination object 'dot11AuthAlgrthm' of size 4

This is a known gcc bug, and the patch here is only a workaround,
but the approach of using a temporary variable to hold a pointer
to the key also improves readability in addition to avoiding the
warning, so overall this should still help.

Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99673
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20210422152648.2891996-1-arnd@kernel.org
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-05-10 14:26:24 +02:00
..
core Staging: rtl8723bs: rtw_xmit: fixed tabbing issue 2021-04-22 10:43:22 +02:00
hal staging: rtl8723bs: replace DBG_871X_LEVEL logs with netdev_*() 2021-04-22 10:39:51 +02:00
include staging: rtl8723bs: remove unused DBG_871X_LEVEL macro declarations 2021-04-22 10:39:51 +02:00
os_dep staging: rtl8723bs: avoid bogus gcc warning 2021-05-10 14:26:24 +02:00
Kconfig staging: rtl8723bs: use help instead of ---help--- in Kconfig 2019-05-20 10:49:08 +02:00
Makefile staging: rtl8723bs: Remove debugging information exposed via procfs 2019-08-14 13:20:12 +02:00
TODO staging: rtl8723bs: remove unused code blocks completed 2021-03-18 10:20:22 +01:00