Commit ada63c61 authored Apr 02, 2017 by Linus Torvalds

Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull core fix from Thomas Gleixner:
 "Prevent leaking kernel memory via /proc/$pid/syscall when the queried
  task is not in a syscall"

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  lib/syscall: Clear return values when no stack

parents 346ce1d7 854fbd6e

lib/syscall.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -12,6 +12,7 @@ static int collect_syscall(struct task_struct target, long callno,

		if (!try_get_task_stack(target)) {
		/* Task has no stack, so the task isn't in a syscall. */
		sp = pc = 0;
		*callno = -1;
		return 0;
		}