From: Philippe Gerum <rpm@xenomai.org>
To: xenomai@xenomai.org
Cc: "Kiszka, Jan" <jan.kiszka@siemens.com>
Subject: Re: [Xenomai] [Xenomai-git] Jan Kiszka : cobalt/posix/sem: Fix locking imbalances in cobalt_sem_open
Date: Sat, 21 Sep 2013 10:31:11 +0200 [thread overview]
Message-ID: <523D594F.1050605@xenomai.org> (raw)
In-Reply-To: <E1VN5el-0002Ct-8K@xenomai.org>
On 09/20/2013 08:42 PM, git repository hosting wrote:
> Module: xenomai-jki
> Branch: for-forge
> Commit: 8775720ae828d1e1be076f91b93a3eeac1b7ed90
> URL: http://git.xenomai.org/?p=xenomai-jki.git;a=commit;h=8775720ae828d1e1be076f91b93a3eeac1b7ed90
>
> Author: Jan Kiszka <jan.kiszka@siemens.com>
> Date: Fri Sep 20 20:39:18 2013 +0200
>
> cobalt/posix/sem: Fix locking imbalances in cobalt_sem_open
>
> We hold cobalt_assoc_lock, not nklock.
>
> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
>
This fix should be backported to 2.6.
> ---
>
> kernel/cobalt/posix/sem.c | 4 ++--
> 1 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/kernel/cobalt/posix/sem.c b/kernel/cobalt/posix/sem.c
> index 076f2d2..60906fd 100644
> --- a/kernel/cobalt/posix/sem.c
> +++ b/kernel/cobalt/posix/sem.c
> @@ -916,7 +916,7 @@ int cobalt_sem_open(unsigned long __user *u_addr,
> if (assoc) {
> usm = container_of(assoc, struct cobalt_usem, assoc);
> ++usm->refcnt;
> - xnlock_put_irqrestore(&nklock, s);
> + xnlock_put_irqrestore(&cobalt_assoc_lock, s);
> goto got_usm;
> }
>
> @@ -936,7 +936,7 @@ int cobalt_sem_open(unsigned long __user *u_addr,
> assoc = cobalt_assoc_lookup(&cc->usems, (u_long)sm->sem);
> if (assoc) {
> container_of(assoc, struct cobalt_usem, assoc)->refcnt++;
> - xnlock_put_irqrestore(&nklock, s);
> + xnlock_put_irqrestore(&cobalt_assoc_lock, s);
> xnfree(usm);
> usm = container_of(assoc, struct cobalt_usem, assoc);
> goto got_usm;
>
>
> _______________________________________________
> Xenomai-git mailing list
> Xenomai-git@xenomai.org
> http://www.xenomai.org/mailman/listinfo/xenomai-git
>
--
Philippe.
next parent reply other threads:[~2013-09-21 8:31 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <E1VN5el-0002Ct-8K@xenomai.org>
2013-09-21 8:31 ` Philippe Gerum [this message]
2013-09-21 9:17 ` [Xenomai] [Xenomai-git] Jan Kiszka : cobalt/posix/sem: Fix locking imbalances in cobalt_sem_open Jan Kiszka
2013-09-21 9:56 ` Philippe Gerum
2013-09-21 10:00 ` Jan Kiszka
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