This is a note to let you know that I've just added the patch titled
Bluetooth: L2CAP: Fix build errors in some archs
to the 4.9-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:
bluetooth-l2cap-fix-build-errors-in-some-archs.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From b840304fb46cdf7012722f456bce06f151b3e81b Mon Sep 17 00:00:00 2001
From: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
Date: Fri, 12 Aug 2022 15:33:57 -0700
Subject: Bluetooth: L2CAP: Fix build errors in some archs
From: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
commit b840304fb46cdf7012722f456bce06f151b3e81b upstream.
This attempts to fix the follow errors:
In function 'memcmp',
inlined from 'bacmp' at ./include/net/bluetooth/bluetooth.h:347:9,
inlined from 'l2cap_global_chan_by_psm' at
net/bluetooth/l2cap_core.c:2003:15:
./include/linux/fortify-string.h:44:33: error: '__builtin_memcmp'
specified bound 6 exceeds source size 0 [-Werror=stringop-overread]
44 | #define __underlying_memcmp __builtin_memcmp
| ^
./include/linux/fortify-string.h:420:16: note: in expansion of macro
'__underlying_memcmp'
420 | return __underlying_memcmp(p, q, size);
| ^~~~~~~~~~~~~~~~~~~
In function 'memcmp',
inlined from 'bacmp' at ./include/net/bluetooth/bluetooth.h:347:9,
inlined from 'l2cap_global_chan_by_psm' at
net/bluetooth/l2cap_core.c:2004:15:
./include/linux/fortify-string.h:44:33: error: '__builtin_memcmp'
specified bound 6 exceeds source size 0 [-Werror=stringop-overread]
44 | #define __underlying_memcmp __builtin_memcmp
| ^
./include/linux/fortify-string.h:420:16: note: in expansion of macro
'__underlying_memcmp'
420 | return __underlying_memcmp(p, q, size);
| ^~~~~~~~~~~~~~~~~~~
Fixes: 332f1795ca20 ("Bluetooth: L2CAP: Fix l2cap_global_chan_by_psm regression")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
Cc: Sudip Mukherjee <sudipm.mukherjee@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/bluetooth/l2cap_core.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -1826,11 +1826,11 @@ static struct l2cap_chan *l2cap_global_c
src_match = !bacmp(&c->src, src);
dst_match = !bacmp(&c->dst, dst);
if (src_match && dst_match) {
- c = l2cap_chan_hold_unless_zero(c);
- if (c) {
- read_unlock(&chan_list_lock);
- return c;
- }
+ if (!l2cap_chan_hold_unless_zero(c))
+ continue;
+
+ read_unlock(&chan_list_lock);
+ return c;
}
/* Closest match */
Patches currently in stable-queue which might be from luiz.von.dentz@xxxxxxxxx are
queue-4.9/bluetooth-l2cap-fix-build-errors-in-some-archs.patch
