The patch titled
Subject: kernel/hung_task: fix address space of proc_dohung_task_timeout_secs
has been added to the -mm mm-nonmm-unstable branch. Its filename is
kernel-hung_task-fix-address-space-of-proc_dohung_task_timeout_secs.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/kernel-hung_task-fix-address-space-of-proc_dohung_task_timeout_secs.patch
This patch will later appear in the mm-nonmm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days
------------------------------------------------------
From: Ben Dooks <ben.dooks@xxxxxxxxxx>
Subject: kernel/hung_task: fix address space of proc_dohung_task_timeout_secs
Date: Thu, 14 Jul 2022 08:47:44 +0100
The proc_dohung_task_timeout_secs() function is incorrectly marked
as having a __user buffer as argument 3. However this is not the
case and it is casing multiple sparse warnings. Fix the following
warnings by removing __user from the argument:
kernel/hung_task.c:237:52: warning: incorrect type in argument 3 (different address spaces)
kernel/hung_task.c:237:52: expected void *
kernel/hung_task.c:237:52: got void [noderef] __user *buffer
kernel/hung_task.c:287:35: warning: incorrect type in initializer (incompatible argument 3 (different address spaces))
kernel/hung_task.c:287:35: expected int ( [usertype] *proc_handler )( ... )
kernel/hung_task.c:287:35: got int ( * )( ... )
kernel/hung_task.c:295:35: warning: incorrect type in initializer (incompatible argument 3 (different address spaces))
kernel/hung_task.c:295:35: expected int ( [usertype] *proc_handler )( ... )
kernel/hung_task.c:295:35: got int ( * )( ... )
Link: https://lkml.kernel.org/r/20220714074744.189017-1-ben.dooks@xxxxxxxxxx
Signed-off-by: Ben Dooks <ben.dooks@xxxxxxxxxx>
Cc: <Conor.Dooley@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/hung_task.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/kernel/hung_task.c~kernel-hung_task-fix-address-space-of-proc_dohung_task_timeout_secs
+++ a/kernel/hung_task.c
@@ -229,7 +229,7 @@ static long hung_timeout_jiffies(unsigne
* Process updating of timeout sysctl
*/
static int proc_dohung_task_timeout_secs(struct ctl_table *table, int write,
- void __user *buffer,
+ void *buffer,
size_t *lenp, loff_t *ppos)
{
int ret;
_
Patches currently in -mm which might be from ben.dooks@xxxxxxxxxx are
kernel-hung_task-fix-address-space-of-proc_dohung_task_timeout_secs.patch
