Commit 51e03149 authored Mar 23, 2011 by Konstantin Khlebnikov Committed by Linus Torvalds Mar 23, 2011

proc: hide kernel addresses via %pK in /proc/<pid>/stack



This file is readable for the task owner.  Hide kernel addresses from
unprivileged users, leave them function names and offsets.

Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Acked-by: Kees Cook <kees.cook@canonical.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 523fb486

fs/proc/base.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -340,7 +340,7 @@ static int proc_pid_stack(struct seq_file m, struct pid_namespace ns,
		save_stack_trace_tsk(task, &trace);

		for (i = 0; i < trace.nr_entries; i++) {
		seq_printf(m, "[<%p>] %pS\n",
		seq_printf(m, "[<%pK>] %pS\n",
		(void )entries[i], (void )entries[i]);
		}
		kfree(entries);

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