From: Ezequiel Garcia <elezegarcia@gmail.com>
Date: Wed, 10 Oct 2012 22:54:04 +0000 (-0700)
Subject: lib/kasprintf.c: use kmalloc_track_caller() to get accurate traces for kvasprintf
X-Git-Tag: Ubuntu-snapdragon-4.4.0-1050.54~13876^2~4
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=3e1aa66bd423950aa69c3d50d91818af1d16e0a7;p=mirror_ubuntu-artful-kernel.git

lib/kasprintf.c: use kmalloc_track_caller() to get accurate traces for kvasprintf

Previously kvasprintf() allocation was being done through kmalloc(),
thus producing an inaccurate trace report.

This is a common problem: in order to get accurate callsite tracing, a
lib/utils function shouldn't allocate kmalloc but instead use
kmalloc_track_caller.

Signed-off-by: Ezequiel Garcia <elezegarcia@gmail.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/lib/kasprintf.c b/lib/kasprintf.c
index ae0de80c1c88..32f12150fc4f 100644
--- a/lib/kasprintf.c
+++ b/lib/kasprintf.c
@@ -21,7 +21,7 @@ char *kvasprintf(gfp_t gfp, const char *fmt, va_list ap)
 	len = vsnprintf(NULL, 0, fmt, aq);
 	va_end(aq);
 
-	p = kmalloc(len+1, gfp);
+	p = kmalloc_track_caller(len+1, gfp);
 	if (!p)
 		return NULL;