linux-kernel - [PATCH v2 0/3] xen/blkback: several fixes of resource management

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-next>] [day] [month] [year] [list]

Date:   Thu, 18 May 2017 17:28:46 +0200
From:   Juergen Gross <jgross@...e.com>
To:     linux-kernel@...r.kernel.org, xen-devel@...ts.xenproject.org
Cc:     konrad.wilk@...cle.com, roger.pau@...rix.com, netwiz@....id.au,
        Juergen Gross <jgross@...e.com>
Subject: [PATCH v2 0/3] xen/blkback: several fixes of resource management

Destroying a Xen guest domain while it was doing I/Os via xen-blkback
leaked several resources, including references of the guest's memory
pages.

This patch series addresses those leaks by correcting usage of
reference counts and the sequence when to free which resource.

The series applies on top of commit 2d4456c73a487abe ("block:
xen-blkback: add null check to avoid null pointer dereference") in
Jens Axboe's tree kernel/git/axboe/linux-block.git

V2: changed flag to type bool in patch 1 (Dietmar Hahn)

Juergen Gross (3):
  xen/blkback: fix disconnect while I/Os in flight
  xen/blkback: don't free be structure too early
  xen/blkback: don't use xen_blkif_get() in xen-blkback kthread

 drivers/block/xen-blkback/blkback.c |  3 ---
 drivers/block/xen-blkback/common.h  |  1 +
 drivers/block/xen-blkback/xenbus.c  | 15 ++++++++-------
 3 files changed, 9 insertions(+), 10 deletions(-)

-- 
2.12.0