All of lore.kernel.org
 help / color / mirror / Atom feed
From: Andrew Morton <akpm@linux-foundation.org>
To: akpm@linux-foundation.org, hch@lst.de, linux-mm@kvack.org,
	lukas.bulwahn@gmail.com, mm-commits@vger.kernel.org,
	penguin-kernel@i-love.sakura.ne.jp, rdna@fb.com,
	torvalds@linux-foundation.org, viro@zeniv.linux.org.uk
Subject: [patch 15/15] kernel/hung_task.c: make type annotations consistent
Date: Sun, 01 Nov 2020 17:08:10 -0800	[thread overview]
Message-ID: <20201102010810.fKUP5FhiG%akpm@linux-foundation.org> (raw)
In-Reply-To: <20201101170656.48abbd5e88375219f868af5e@linux-foundation.org>

From: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Subject: kernel/hung_task.c: make type annotations consistent

Commit 32927393dc1c ("sysctl: pass kernel pointers to ->proc_handler")
removed various __user annotations from function signatures as part of its
refactoring.

It also removed the __user annotation for proc_dohung_task_timeout_secs()
at its declaration in ./sched/sysctl.h, but not at its definition in
./kernel/hung_task.c.

Hence, sparse complains:

  kernel/hung_task.c:271:5: error: \
  symbol 'proc_dohung_task_timeout_secs' redeclared with different type \
  (incompatible argument 3 (different address spaces))

Adjust the annotation at the definition fitting to that refactoring to make
sparse happy again, which also resolves this warning from sparse:

  kernel/hung_task.c:277:52: warning: incorrect type in argument 3 \
    (different address spaces)
  kernel/hung_task.c:277:52:    expected void *
  kernel/hung_task.c:277:52:    got void [noderef] __user *buffer

No functional change. No change in object code.

Link: https://lkml.kernel.org/r/20201028130541.20320-1-lukas.bulwahn@gmail.com
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andrey Ignatov <rdna@fb.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 kernel/hung_task.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/kernel/hung_task.c~kernel-hung_taskc-make-type-annotations-consistent
+++ a/kernel/hung_task.c
@@ -225,8 +225,7 @@ static long hung_timeout_jiffies(unsigne
  * Process updating of timeout sysctl
  */
 int proc_dohung_task_timeout_secs(struct ctl_table *table, int write,
-				  void __user *buffer,
-				  size_t *lenp, loff_t *ppos)
+				  void *buffer, size_t *lenp, loff_t *ppos)
 {
 	int ret;
 
_

      parent reply	other threads:[~2020-11-02  1:08 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-02  1:06 incoming Andrew Morton
2020-11-02  1:07 ` [patch 01/15] mm/mremap_pages: fix static key devmap_managed_key updates Andrew Morton
2020-11-02  1:07 ` [patch 02/15] hugetlb_cgroup: fix reservation accounting Andrew Morton
2020-11-02  1:07 ` [patch 03/15] mm: memcontrol: correct the NR_ANON_THPS counter of hierarchical memcg Andrew Morton
2020-11-02  1:07 ` [patch 04/15] mm: memcg: link page counters to root if use_hierarchy is false Andrew Morton
2020-11-02  1:07   ` [LTP] " Andrew Morton
2020-11-02  1:07 ` [patch 05/15] kasan: adopt KUNIT tests to SW_TAGS mode Andrew Morton
2020-11-02  1:07 ` [patch 06/15] mm: mempolicy: fix potential pte_unmap_unlock pte error Andrew Morton
2020-11-02  1:07 ` [patch 07/15] ptrace: fix task_join_group_stop() for the case when current is traced Andrew Morton
2020-11-02  1:07 ` [patch 08/15] lib/crc32test: remove extra local_irq_disable/enable Andrew Morton
2020-11-02  1:07 ` [patch 09/15] mm/truncate.c: make __invalidate_mapping_pages() static Andrew Morton
2020-11-02  1:07 ` [patch 10/15] kthread_worker: prevent queuing delayed work from timer_fn when it is being canceled Andrew Morton
2020-11-02  1:07 ` [patch 11/15] mm, oom: keep oom_adj under or at upper limit when printing Andrew Morton
2020-11-02  1:08 ` [patch 12/15] mm: always have io_remap_pfn_range() set pgprot_decrypted() Andrew Morton
2020-11-02  1:08 ` [patch 13/15] epoll: check ep_events_available() upon timeout Andrew Morton
2020-11-02 17:08   ` Linus Torvalds
2020-11-02 17:08     ` Linus Torvalds
2020-11-02 17:48     ` Soheil Hassas Yeganeh
2020-11-02 17:48       ` Soheil Hassas Yeganeh
2020-11-02 18:51       ` Linus Torvalds
2020-11-02 18:51         ` Linus Torvalds
2020-11-02 19:38         ` Linus Torvalds
2020-11-02 19:38           ` Linus Torvalds
2020-11-02 19:54         ` Soheil Hassas Yeganeh
2020-11-02 19:54           ` Soheil Hassas Yeganeh
2020-11-02 20:12           ` Linus Torvalds
2020-11-02 20:12             ` Linus Torvalds
2020-11-02  1:08 ` [patch 14/15] epoll: add a selftest for epoll timeout race Andrew Morton
2020-11-02  1:08 ` Andrew Morton [this message]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20201102010810.fKUP5FhiG%akpm@linux-foundation.org \
    --to=akpm@linux-foundation.org \
    --cc=hch@lst.de \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mm@kvack.org \
    --cc=lukas.bulwahn@gmail.com \
    --cc=mm-commits@vger.kernel.org \
    --cc=penguin-kernel@i-love.sakura.ne.jp \
    --cc=rdna@fb.com \
    --cc=torvalds@linux-foundation.org \
    --cc=viro@zeniv.linux.org.uk \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.