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-rw-r--r--kernel/debug/kdb/kdb_support.c18
1 files changed, 10 insertions, 8 deletions
diff --git a/kernel/debug/kdb/kdb_support.c b/kernel/debug/kdb/kdb_support.c
index 91bb666d7c03..9f50d22d68e6 100644
--- a/kernel/debug/kdb/kdb_support.c
+++ b/kernel/debug/kdb/kdb_support.c
@@ -609,23 +609,25 @@ unsigned long kdb_task_state_string(const char *s)
*/
char kdb_task_state_char (const struct task_struct *p)
{
- int cpu;
- char state;
+ unsigned int p_state;
unsigned long tmp;
+ char state;
+ int cpu;
if (!p ||
copy_from_kernel_nofault(&tmp, (char *)p, sizeof(unsigned long)))
return 'E';
cpu = kdb_process_cpu(p);
- state = (p->state == 0) ? 'R' :
- (p->state < 0) ? 'U' :
- (p->state & TASK_UNINTERRUPTIBLE) ? 'D' :
- (p->state & TASK_STOPPED) ? 'T' :
- (p->state & TASK_TRACED) ? 'C' :
+ p_state = READ_ONCE(p->__state);
+ state = (p_state == 0) ? 'R' :
+ (p_state < 0) ? 'U' :
+ (p_state & TASK_UNINTERRUPTIBLE) ? 'D' :
+ (p_state & TASK_STOPPED) ? 'T' :
+ (p_state & TASK_TRACED) ? 'C' :
(p->exit_state & EXIT_ZOMBIE) ? 'Z' :
(p->exit_state & EXIT_DEAD) ? 'E' :
- (p->state & TASK_INTERRUPTIBLE) ? 'S' : '?';
+ (p_state & TASK_INTERRUPTIBLE) ? 'S' : '?';
if (is_idle_task(p)) {
/* Idle task. Is it really idle, apart from the kdb
* interrupt? */