linux-kernel - Re: [PATCH 04/18] isapnp: BKL removal

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <AANLkTik44U-8vTbw5XvVxRJp-7v1wDg35vqPT-BTJQ70@mail.gmail.com>
Date:	Wed, 15 Sep 2010 10:31:34 +0100
From:	Will Newton <will.newton@...il.com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 04/18] isapnp: BKL removal

On Tue, Sep 14, 2010 at 8:40 PM, Arnd Bergmann <arnd@...db.de> wrote:

> diff --git a/drivers/pnp/isapnp/proc.c b/drivers/pnp/isapnp/proc.c
> index 3f94eda..4249999 100644
> --- a/drivers/pnp/isapnp/proc.c
> +++ b/drivers/pnp/isapnp/proc.c
> @@ -31,8 +31,9 @@ static struct proc_dir_entry *isapnp_proc_bus_dir = NULL;
>  static loff_t isapnp_proc_bus_lseek(struct file *file, loff_t off, int whence)
>  {
>        loff_t new = -1;
> +       struct inode *inode = file->f_path.dentry->d_inode;
>
> -       lock_kernel();
> +       mutex_lock(&inode->i_mutex);
>        switch (whence) {
>        case 0:
>                new = off;
> @@ -45,11 +46,11 @@ static loff_t isapnp_proc_bus_lseek(struct file *file, loff_t off, int whence)
>                break;
>        }
>        if (new < 0 || new > 256) {

Mismatched brackets here?

> -               unlock_kernel();
> -               return -EINVAL;
> -       }
> -       unlock_kernel();
> -       return (file->f_pos = new);
> +               new = -EINVAL;
> +       else
> +               file->f_pos = new;
> +       mutex_unlock(&inode->i_mutex);
> +       return new;
>  }
>
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/