try_get_task_stack() has already properly gets target task's stack,
no need to call task_stack_page() again.
Signed-off-by: Jisheng Zhang <[email protected]>
---
arch/x86/kernel/process.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index 1d9463e3096b..d4a6503b3878 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -950,12 +950,9 @@ unsigned long get_wchan(struct task_struct *p)
if (p == current || task_is_running(p))
return 0;
- if (!try_get_task_stack(p))
- return 0;
-
- start = (unsigned long)task_stack_page(p);
+ start = (unsigned long)try_get_task_stack(p);
if (!start)
- goto out;
+ return 0;
/*
* Layout of the stack page:
--
2.32.0