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authorLinus Torvalds <torvalds@linux-foundation.org>2019-02-07 08:59:01 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2019-02-07 08:59:01 +0100
commit4879f11615d29d7b91cd5a4cfbff8e563ada991d (patch)
tree5eedc6421bb041bb24309f522b369a9139f5fb6d /kernel
parentMerge tag 'fuse-fixes-5.0-rc6' of git://git.kernel.org/pub/scm/linux/kernel/g... (diff)
parenttracing/uprobes: Fix output for multiple string arguments (diff)
downloadlinux-4879f11615d29d7b91cd5a4cfbff8e563ada991d.tar.xz
linux-4879f11615d29d7b91cd5a4cfbff8e563ada991d.zip
Merge tag 'trace-v5.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt: "This has two fixes for uprobe code. - Cut and paste fix to have uprobe printks say "uprobe" and not "kprobe" - Add terminating '\0' byte when copying function arguments" * tag 'trace-v5.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: tracing/uprobes: Fix output for multiple string arguments tracing: uprobes: Fix typo in pr_fmt string
Diffstat (limited to 'kernel')
-rw-r--r--kernel/trace/trace_uprobe.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/kernel/trace/trace_uprobe.c b/kernel/trace/trace_uprobe.c
index e335576b9411..9bde07c06362 100644
--- a/kernel/trace/trace_uprobe.c
+++ b/kernel/trace/trace_uprobe.c
@@ -5,7 +5,7 @@
* Copyright (C) IBM Corporation, 2010-2012
* Author: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
*/
-#define pr_fmt(fmt) "trace_kprobe: " fmt
+#define pr_fmt(fmt) "trace_uprobe: " fmt
#include <linux/ctype.h>
#include <linux/module.h>
@@ -160,6 +160,13 @@ fetch_store_string(unsigned long addr, void *dest, void *base)
if (ret >= 0) {
if (ret == maxlen)
dst[ret - 1] = '\0';
+ else
+ /*
+ * Include the terminating null byte. In this case it
+ * was copied by strncpy_from_user but not accounted
+ * for in ret.
+ */
+ ret++;
*(u32 *)dest = make_data_loc(ret, (void *)dst - base);
}