procfs: fix /proc/<pid>/stat stack pointer for kernel threads

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 <[email protected]> Cc: Ingo Molnar <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
goeke · Nov 18, 2009 · 9ebd4eb · 9ebd4eb
1 parent 6ad696d
commit 9ebd4eb
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/fs/proc/array.c b/fs/proc/array.c
@@ -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 		/* The signal information here is obsolete.