linux-kernel - Re: [PATCH] mm/hugetlb: i_mmap_lock_write before unmapping in remove_inode

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: <20151023134553.GE27292@linux-uzut.site>
Date:	Fri, 23 Oct 2015 06:45:53 -0700
From:	Davidlohr Bueso <dave@...olabs.net>
To:	Mike Kravetz <mike.kravetz@...cle.com>
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	Naoya Horiguchi <n-horiguchi@...jp.nec.com>,
	Hugh Dickins <hughd@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] mm/hugetlb: i_mmap_lock_write before unmapping in
 remove_inode_hugepages

On Wed, 21 Oct 2015, Mike Kravetz wrote:

>Code was added to remove_inode_hugepages that will unmap a page if
>it is mapped.  i_mmap_lock_write() must be taken during the call
>to hugetlb_vmdelete_list().  This is to prevent mappings(vmas) from
>being added or deleted while the list of vmas is being examined.
                                   ^^^^ interval-tree.
>
>Signed-off-by: Mike Kravetz <mike.kravetz@...cle.com>

Reviewed-by: Davidlohr Bueso <dbueso@...e.de>
--
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/