From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Jan Beulich <jbeulich@suse.com>,
Juergen Gross <jgross@suse.com>
Subject: [PATCH 5.10 17/29] Xen/x86: also check kernel mapping in set_foreign_p2m_mapping()
Date: Mon, 22 Feb 2021 13:13:11 +0100 [thread overview]
Message-ID: <20210222121022.438590607@linuxfoundation.org> (raw)
In-Reply-To: <20210222121019.444399883@linuxfoundation.org>
From: Jan Beulich <jbeulich@suse.com>
commit b512e1b077e5ccdbd6e225b15d934ab12453b70a upstream.
We should not set up further state if either mapping failed; paying
attention to just the user mapping's status isn't enough.
Also use GNTST_okay instead of implying its value (zero).
This is part of XSA-361.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Cc: stable@vger.kernel.org
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/x86/xen/p2m.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/arch/x86/xen/p2m.c
+++ b/arch/x86/xen/p2m.c
@@ -712,7 +712,8 @@ int set_foreign_p2m_mapping(struct gntta
unsigned long mfn, pfn;
/* Do not add to override if the map failed. */
- if (map_ops[i].status)
+ if (map_ops[i].status != GNTST_okay ||
+ (kmap_ops && kmap_ops[i].status != GNTST_okay))
continue;
if (map_ops[i].flags & GNTMAP_contains_pte) {
next prev parent reply other threads:[~2021-02-22 12:29 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-22 12:12 [PATCH 5.10 00/29] 5.10.18-rc1 review Greg Kroah-Hartman
2021-02-22 12:12 ` [PATCH 5.10 01/29] vdpa_sim: remove hard-coded virtq count Greg Kroah-Hartman
2021-02-22 12:12 ` [PATCH 5.10 02/29] vdpa_sim: add struct vdpasim_dev_attr for device attributes Greg Kroah-Hartman
2021-02-22 12:12 ` [PATCH 5.10 03/29] vdpa_sim: store parsed MAC address in a buffer Greg Kroah-Hartman
2021-02-22 19:54 ` Pavel Machek
2021-02-23 4:49 ` Greg Kroah-Hartman
2021-02-23 8:06 ` Stefano Garzarella
2021-02-24 8:29 ` Pavel Machek
2021-02-24 8:36 ` Stefano Garzarella
2021-02-22 12:12 ` [PATCH 5.10 04/29] vdpa_sim: make config generic and usable for any device type Greg Kroah-Hartman
2021-02-22 12:12 ` [PATCH 5.10 05/29] vdpa_sim: add get_config callback in vdpasim_dev_attr Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 5.10 06/29] IB/isert: add module param to set sg_tablesize for IO cmd Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 5.10 07/29] net: qrtr: Fix port ID for control messages Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 5.10 08/29] mptcp: skip to next candidate if subflow has unacked data Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 5.10 09/29] net/sched: fix miss init the mru in qdisc_skb_cb Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 5.10 10/29] mt76: mt7915: fix endian issues Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 5.10 11/29] mt76: mt7615: fix rdd mcu cmd endianness Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 5.10 12/29] net: sched: incorrect Kconfig dependencies on Netfilter modules Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 5.10 13/29] net: openvswitch: fix TTL decrement exception action execution Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 5.10 14/29] net: bridge: Fix a warning when del bridge sysfs Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 5.10 15/29] net: fix proc_fs init handling in af_packet and tls Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 5.10 16/29] Xen/x86: dont bail early from clear_foreign_p2m_mapping() Greg Kroah-Hartman
2021-02-22 12:13 ` Greg Kroah-Hartman [this message]
2021-02-22 12:13 ` [PATCH 5.10 18/29] Xen/gntdev: correct dev_bus_addr handling in gntdev_map_grant_pages() Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 5.10 19/29] Xen/gntdev: correct error checking " Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 5.10 20/29] xen/arm: dont ignore return errors from set_phys_to_machine Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 5.10 21/29] xen-blkback: dont "handle" error by BUG() Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 5.10 22/29] xen-netback: " Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 5.10 23/29] xen-scsiback: " Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 5.10 24/29] xen-blkback: fix error handling in xen_blkbk_map() Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 5.10 25/29] tty: protect tty_write from odd low-level tty disciplines Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 5.10 26/29] Bluetooth: btusb: Always fallback to alt 1 for WBS Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 5.10 27/29] btrfs: fix backport of 2175bf57dc952 in 5.10.13 Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 5.10 28/29] btrfs: fix crash after non-aligned direct IO write with O_DSYNC Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 5.10 29/29] media: pwc: Use correct device for DMA Greg Kroah-Hartman
2021-02-22 17:17 ` [PATCH 5.10 00/29] 5.10.18-rc1 review Florian Fainelli
2021-02-24 18:42 ` Greg Kroah-Hartman
2021-02-22 18:42 ` Pavel Machek
2021-02-24 18:42 ` Greg Kroah-Hartman
2021-02-22 21:28 ` Guenter Roeck
2021-02-22 21:34 ` Igor
2021-02-23 2:49 ` Naresh Kamboju
2021-02-23 21:06 ` Shuah Khan
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210222121022.438590607@linuxfoundation.org \
--to=gregkh@linuxfoundation.org \
--cc=jbeulich@suse.com \
--cc=jgross@suse.com \
--cc=linux-kernel@vger.kernel.org \
--cc=stable@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).