3.16.60-rc1 review patch. If anyone has any objections, please let me know.
------------------ From: Masami Hiramatsu <[email protected]> commit 50268a3d266ecfdd6c5873d62b2758d9732fc598 upstream. Fix string fetch function to terminate with NUL. It is OK to drop the rest of string. Signed-off-by: Masami Hiramatsu <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Song Liu <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: [email protected] Cc: 范龙飞 <[email protected]> Fixes: 5baaa59ef09e ("tracing/probes: Implement 'memory' fetch method for uprobes") Signed-off-by: Ingo Molnar <[email protected]> Signed-off-by: Ben Hutchings <[email protected]> --- kernel/trace/trace_uprobe.c | 2 ++ 1 file changed, 2 insertions(+) --- a/kernel/trace/trace_uprobe.c +++ b/kernel/trace/trace_uprobe.c @@ -149,6 +149,8 @@ static void FETCH_FUNC_NAME(memory, stri return; ret = strncpy_from_user(dst, src, maxlen); + if (ret == maxlen) + dst[--ret] = '\0'; if (ret < 0) { /* Failed to fetch string */ ((u8 *)get_rloc_data(dest))[0] = '\0';
