The patch titled
lib/vsprintf.c: fix interaction of kasprintf() and vsnprintf() when using %pV
has been added to the -mm tree. Its filename is
lib-vsprintfc-fix-interaction-of-kasprintf-and-vsnprintf-when-using-%pv.patch
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------------------------------------------------------
Subject: lib/vsprintf.c: fix interaction of kasprintf() and vsnprintf() when using %pV
From: "Jan Beulich" <JBeulich@xxxxxxxxxx>
Otherwise, the warning at the top of vsnprintf() gets triggered by
kvasprintf()'s first invocation (with NULL buffer and zero size) of
vsnprintf().
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
lib/vsprintf.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN lib/vsprintf.c~lib-vsprintfc-fix-interaction-of-kasprintf-and-vsnprintf-when-using-%pv lib/vsprintf.c
--- a/lib/vsprintf.c~lib-vsprintfc-fix-interaction-of-kasprintf-and-vsnprintf-when-using-%pv
+++ a/lib/vsprintf.c
@@ -898,7 +898,7 @@ char *pointer(const char *fmt, char *buf
case 'U':
return uuid_string(buf, end, ptr, spec, fmt);
case 'V':
- return buf + vsnprintf(buf, end - buf,
+ return buf + vsnprintf(buf, end > buf ? end - buf : 0,
((struct va_format *)ptr)->fmt,
*(((struct va_format *)ptr)->va));
case 'K':
_
Patches currently in -mm which might be from JBeulich@xxxxxxxxxx are
linux-next.patch
lib-vsprintfc-fix-interaction-of-kasprintf-and-vsnprintf-when-using-%pv.patch
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