linux-kernel - Re: [PATCH v4][RESENT] add MAP

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 for Android: free password hash cracker in your pocket

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

Message-ID: <20100112232145.GA10576@sequoia.sous-sol.org>
Date:	Tue, 12 Jan 2010 15:21:45 -0800
From:	Chris Wright <chrisw@...s-sol.org>
To:	Gleb Natapov <gleb@...hat.com>
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	linux-api@...r.kernel.org, akpm@...ux-foundation.org
Subject: Re: [PATCH v4][RESENT] add MAP_UNLOCKED mmap flag

* Gleb Natapov (gleb@...hat.com) wrote:
>  v3->v4
>   - return error if MAP_LOCKED | MAP_UNLOCKED is specified
...
> --- a/mm/mmap.c
> +++ b/mm/mmap.c
> @@ -962,6 +962,12 @@ unsigned long do_mmap_pgoff(struct file *file, unsigned long addr,
>  		if (!can_do_mlock())
>  			return -EPERM;
>  
> +        if (flags & MAP_UNLOCKED)
> +                vm_flags &= ~VM_LOCKED;
> +
> +        if (flags & MAP_UNLOCKED)
> +                vm_flags &= ~VM_LOCKED;
> +
>  	/* mlock MCL_FUTURE? */
>  	if (vm_flags & VM_LOCKED) {
>  		unsigned long locked, lock_limit;

Looks like same patch applied twice rather than adding the
(MAP_LOCKED | MAP_UNLOCKED) check.
--
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/