Since commit 8e1f385104ac ("kill task_struct->thread_group") remove the thread_group, we will encounter below issue.

(gdb) lx-ps TASK PID COMM 0xffff800086503340 0 swapper/0 Python Exception <class 'gdb.error'>: There is no member named thread_group. Error occurred in Python: There is no member named thread_group.

We use signal->thread_head to iterate all threads instead.

Fixes: 8e1f385104ac ("kill task_struct->thread_group") Cc: stable@vger.kernel.org Signed-off-by: Kuan-Ying Lee Kuan-Ying.Lee@mediatek.com --- scripts/gdb/linux/tasks.py | 18 +++++++----------- 1 file changed, 7 insertions(+), 11 deletions(-)

diff --git a/scripts/gdb/linux/tasks.py b/scripts/gdb/linux/tasks.py index 17ec19e9b5bf..aa5ab6251f76 100644 --- a/scripts/gdb/linux/tasks.py +++ b/scripts/gdb/linux/tasks.py @@ -13,7 +13,7 @@

import gdb

-from linux import utils +from linux import utils, lists

task_type = utils.CachedType("struct task_struct") @@ -22,19 +22,15 @@ task_type = utils.CachedType("struct task_struct") def task_lists(): task_ptr_type = task_type.get_type().pointer() init_task = gdb.parse_and_eval("init_task").address - t = g = init_task + t = init_task

while True: - while True: - yield t + thread_head = t['signal']['thread_head'] + for thread in lists.list_for_each_entry(thread_head, task_ptr_type, 'thread_node'): + yield thread

- t = utils.container_of(t['thread_group']['next'], - task_ptr_type, "thread_group") - if t == g: - break - - t = g = utils.container_of(g['tasks']['next'], - task_ptr_type, "tasks") + t = utils.container_of(t['tasks']['next'], + task_ptr_type, "tasks") if t == init_task: return