procfs: fix /proc/<pid>/stat stack pointer for kernel threads
authorStefani Seibold <stefani@seibold.net>
Tue, 17 Nov 2009 22:06:23 +0000 (14:06 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 18 Nov 2009 01:40:33 +0000 (17:40 -0800)
Fix a small issue for the stack pointer in /proc/<pid>/stat.  In case of a
kernel thread the value of the printed stack pointer should be 0.

Signed-off-by: Stefani Seibold <stefani@seibold.net>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
fs/proc/array.c

index 07f77a7945c320e7b9ac133e523f83b9824691e2..822c2d5065189906cd6a63bedd27875290964e04 100644 (file)
@@ -571,7 +571,7 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
                rsslim,
                mm ? mm->start_code : 0,
                mm ? mm->end_code : 0,
-               (permitted) ? task->stack_start : 0,
+               (permitted && mm) ? task->stack_start : 0,
                esp,
                eip,
                /* The signal information here is obsolete.