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| author | Kees Cook <keescook@chromium.org> | 2022-01-18 11:33:26 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-01-25 16:21:36 +0100 |
| commit | c146ae45df287b73ada0f7b62375f98f64d6beb2 (patch) | |
| tree | 062d550e4731b191cba95a4fde115e4eec107f9b /drivers/staging/rtl8723bs/hal | |
| parent | 6fb5d25a72c757a3081ba2637ce3a017171e89c7 (diff) | |
| download | linux-stable-c146ae45df287b73ada0f7b62375f98f64d6beb2.tar.gz linux-stable-c146ae45df287b73ada0f7b62375f98f64d6beb2.tar.bz2 linux-stable-c146ae45df287b73ada0f7b62375f98f64d6beb2.zip | |
staging: rtl8723bs: Drop get_recvframe_data()
When building with -Warray-bounds, the following warning is emitted:
In file included from ./include/linux/string.h:253,
from ./arch/x86/include/asm/page_32.h:22,
from ./arch/x86/include/asm/page.h:14,
from ./arch/x86/include/asm/thread_info.h:12,
from ./include/linux/thread_info.h:60,
from ./arch/x86/include/asm/preempt.h:7,
from ./include/linux/preempt.h:78,
from ./include/linux/rcupdate.h:27,
from ./include/linux/rculist.h:11,
from ./include/linux/sched/signal.h:5,
from ./drivers/staging/rtl8723bs/include/drv_types.h:17,
from drivers/staging/rtl8723bs/core/rtw_recv.c:7:
In function 'memcpy',
inlined from 'wlanhdr_to_ethhdr' at drivers/staging/rtl8723bs/core/rtw_recv.c:1554:2:
./include/linux/fortify-string.h:41:33: warning: '__builtin_memcpy' offset [0, 5] is out of the bounds [0, 0] [-Warray-bounds]
41 | #define __underlying_memcpy __builtin_memcpy
| ^
This is because the compiler sees it is possible for "ptr" to be a NULL
value, and concludes that it has zero size and attempts to copy to it
would overflow. Instead, remove the get_recvframe_data() entirely, as
it's not possible for this to ever be NULL.
Additionally add missing NULL checks after recvframe_pull() (which are
present in the rtl8712 driver).
Cc: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Phillip Potter <phil@philpotter.co.uk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Michael Straube <straube.linux@gmail.com>
Cc: Fabio Aiuto <fabioaiuto83@gmail.com>
Cc: linux-staging@lists.linux.dev
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20220118193327.2822099-3-keescook@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/rtl8723bs/hal')
| -rw-r--r-- | drivers/staging/rtl8723bs/hal/rtl8723bs_recv.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/staging/rtl8723bs/hal/rtl8723bs_recv.c b/drivers/staging/rtl8723bs/hal/rtl8723bs_recv.c index c0a1a6fbeb91..74e75dc970f7 100644 --- a/drivers/staging/rtl8723bs/hal/rtl8723bs_recv.c +++ b/drivers/staging/rtl8723bs/hal/rtl8723bs_recv.c @@ -81,7 +81,7 @@ static void update_recvframe_phyinfo(union recv_frame *precvframe, struct odm_phy_info *p_phy_info = (struct odm_phy_info *)(&pattrib->phy_info); - u8 *wlanhdr; + u8 *wlanhdr = precvframe->u.hdr.rx_data; u8 *my_bssid; u8 *rx_bssid; u8 *rx_ra; @@ -100,7 +100,6 @@ static void update_recvframe_phyinfo(union recv_frame *precvframe, struct sta_priv *pstapriv; struct sta_info *psta; - wlanhdr = get_recvframe_data(precvframe); my_bssid = get_bssid(&padapter->mlmepriv); rx_bssid = get_hdr_bssid(wlanhdr); pkt_info.bssid_match = ((!IsFrameTypeCtrl(wlanhdr)) && |