The stack object “info” has a total size of 128 bytes; however, only 28 bytes are initialized. The remaining uninitialized bytes are sent to userland via send_signal.
Signed-off-by: Kangjie Lu <[email protected]> --- kernel/signal.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/signal.c b/kernel/signal.c index aa9bf00..f40f0b3 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -1594,6 +1594,7 @@ bool do_notify_parent(struct task_struct *tsk, int sig) sig = SIGCHLD; } + memset(&info, 0, sizeof(info)); info.si_signo = sig; info.si_errno = 0; /* -- 1.9.1
