Patch "wifi: ath10k: fix clang-specific fortify warning" has been added to the 5.15-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    wifi: ath10k: fix clang-specific fortify warning

to the 5.15-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     wifi-ath10k-fix-clang-specific-fortify-warning.patch
and it can be found in the queue-5.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit cd31bfeb156c15f58c251d3ae65ce4de209bb31d
Author: Dmitry Antipov <dmantipov@xxxxxxxxx>
Date:   Tue Aug 29 12:36:02 2023 +0300

    wifi: ath10k: fix clang-specific fortify warning
    
    [ Upstream commit cb4c132ebfeac5962f7258ffc831caa0c4dada1a ]
    
    When compiling with clang 16.0.6 and CONFIG_FORTIFY_SOURCE=y, I've
    noticed the following (somewhat confusing due to absence of an actual
    source code location):
    
    In file included from drivers/net/wireless/ath/ath10k/debug.c:8:
    In file included from ./include/linux/module.h:13:
    In file included from ./include/linux/stat.h:19:
    In file included from ./include/linux/time.h:60:
    In file included from ./include/linux/time32.h:13:
    In file included from ./include/linux/timex.h:67:
    In file included from ./arch/x86/include/asm/timex.h:5:
    In file included from ./arch/x86/include/asm/processor.h:23:
    In file included from ./arch/x86/include/asm/msr.h:11:
    In file included from ./arch/x86/include/asm/cpumask.h:5:
    In file included from ./include/linux/cpumask.h:12:
    In file included from ./include/linux/bitmap.h:11:
    In file included from ./include/linux/string.h:254:
    ./include/linux/fortify-string.h:592:4: warning: call to '__read_overflow2_field'
    declared with 'warning' attribute: detected read beyond size of field (2nd
    parameter); maybe use struct_group()? [-Wattribute-warning]
                            __read_overflow2_field(q_size_field, size);
    
    The compiler actually complains on 'ath10k_debug_get_et_strings()' where
    fortification logic inteprets call to 'memcpy()' as an attempt to copy
    the whole 'ath10k_gstrings_stats' array from it's first member and so
    issues an overread warning. This warning may be silenced by passing
    an address of the whole array and not the first member to 'memcpy()'.
    
    Signed-off-by: Dmitry Antipov <dmantipov@xxxxxxxxx>
    Acked-by: Jeff Johnson <quic_jjohnson@xxxxxxxxxxx>
    Signed-off-by: Kalle Valo <quic_kvalo@xxxxxxxxxxx>
    Link: https://lore.kernel.org/r/20230829093652.234537-1-dmantipov@xxxxxxxxx
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/net/wireless/ath/ath10k/debug.c b/drivers/net/wireless/ath/ath10k/debug.c
index 39378e3f9b2bb..6e1b65b8ae656 100644
--- a/drivers/net/wireless/ath/ath10k/debug.c
+++ b/drivers/net/wireless/ath/ath10k/debug.c
@@ -1139,7 +1139,7 @@ void ath10k_debug_get_et_strings(struct ieee80211_hw *hw,
 				 u32 sset, u8 *data)
 {
 	if (sset == ETH_SS_STATS)
-		memcpy(data, *ath10k_gstrings_stats,
+		memcpy(data, ath10k_gstrings_stats,
 		       sizeof(ath10k_gstrings_stats));
 }