Patch "mpssd: fix buffer overflow warning" has been added to the 4.7-stable tree

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

mpssd: fix buffer overflow warning

to the 4.7-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:
mpssd-fix-buffer-overflow-warning.patch
and it can be found in the queue-4.7 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Mike Danese <[email protected]>
Date: Thu, 19 May 2016 21:54:51 -0700
Subject: mpssd: fix buffer overflow warning
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From: Mike Danese <[email protected]>

commit 3610a2add39365a0f153154c60169a66c616d50f upstream.

The compilation emits a warning in function ‘snprintf’,
inlined from ‘set_cmdline’ at ../Documentation/mic/mpssd/mpssd.c:1541:9:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:64:10:
warning: call to __builtin___snprintf_chk will always overflow destination buffer

This was introduced in commit f4a66c204482 ("misc: mic: Update MIC host daemon with COSM changes") and is fixed by reverting the changes to the size argument of these snprintf statements.

---
 Documentation/mic/mpssd/mpssd.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

@@ -1538,9 +1538,9 @@ set_cmdline(struct mic_info *mic)
 
 	len = snprintf(buffer, PATH_MAX,
 		"clocksource=tsc highres=off nohz=off ");
-	len += snprintf(buffer + len, PATH_MAX,
+	len += snprintf(buffer + len, PATH_MAX - len,
 		"cpufreq_on;corec6_off;pc3_off;pc6_off ");
-	len += snprintf(buffer + len, PATH_MAX,
+	len += snprintf(buffer + len, PATH_MAX - len,
 		"ifcfg=static;address,172.31.%d.1;netmask,255.255.255.0",
 		mic->id + 1);
 

Patches currently in stable-queue which might be from [email protected] are

queue-4.7/mpssd-fix-buffer-overflow-warning.patch