From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:53508 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756103AbeATQlL (ORCPT ); Sat, 20 Jan 2018 11:41:11 -0500 Subject: Patch "scripts/gdb/linux/tasks.py: fix get_thread_info" has been added to the 4.14-stable tree To: imxikangjie@gmail.com, akpm@linux-foundation.org, gregkh@linuxfoundation.org, jan.kiszka@siemens.com, kbingham@kernel.org, torvalds@linux-foundation.org Cc: , From: Date: Sat, 20 Jan 2018 17:38:23 +0100 Message-ID: <1516466303239190@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled scripts/gdb/linux/tasks.py: fix get_thread_info to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: scripts-gdb-linux-tasks.py-fix-get_thread_info.patch and it can be found in the queue-4.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 883d50f56d263f70fd73c0d96b09eb36c34e9305 Mon Sep 17 00:00:00 2001 From: Xi Kangjie Date: Thu, 18 Jan 2018 16:34:00 -0800 Subject: scripts/gdb/linux/tasks.py: fix get_thread_info From: Xi Kangjie commit 883d50f56d263f70fd73c0d96b09eb36c34e9305 upstream. Since kernel 4.9, the thread_info has been moved into task_struct, no longer locates at the bottom of kernel stack. See commits c65eacbe290b ("sched/core: Allow putting thread_info into task_struct") and 15f4eae70d36 ("x86: Move thread_info into task_struct"). Before fix: (gdb) set $current = $lx_current() (gdb) p $lx_thread_info($current) $1 = {flags = 1470918301} (gdb) p $current.thread_info $2 = {flags = 2147483648} After fix: (gdb) p $lx_thread_info($current) $1 = {flags = 2147483648} (gdb) p $current.thread_info $2 = {flags = 2147483648} Link: http://lkml.kernel.org/r/20180118210159.17223-1-imxikangjie@gmail.com Fixes: 15f4eae70d36 ("x86: Move thread_info into task_struct") Signed-off-by: Xi Kangjie Acked-by: Jan Kiszka Acked-by: Kieran Bingham Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman --- scripts/gdb/linux/tasks.py | 2 ++ 1 file changed, 2 insertions(+) --- a/scripts/gdb/linux/tasks.py +++ b/scripts/gdb/linux/tasks.py @@ -96,6 +96,8 @@ def get_thread_info(task): thread_info_addr = task.address + ia64_task_size thread_info = thread_info_addr.cast(thread_info_ptr_type) else: + if task.type.fields()[0].type == thread_info_type.get_type(): + return task['thread_info'] thread_info = task['stack'].cast(thread_info_ptr_type) return thread_info.dereference() Patches currently in stable-queue which might be from imxikangjie@gmail.com are queue-4.14/scripts-gdb-linux-tasks.py-fix-get_thread_info.patch