From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, "H. Peter Anvin" <hpa@zytor.com>
Subject: [PATCH 3.10 11/27] Revert "x86-64, modify_ldt: Make support for 16-bit segments a runtime option"
Date: Tue, 5 Aug 2014 11:14:03 -0700 [thread overview]
Message-ID: <20140805181344.601302608@linuxfoundation.org> (raw)
In-Reply-To: <20140805181344.268039690@linuxfoundation.org>
3.10-stable review patch. If anyone has any objections, please let me know.
------------------
From: "H. Peter Anvin" <hpa@zytor.com>
commit 7ed6fb9b5a5510e4ef78ab27419184741169978a upstream.
This reverts commit fa81511bb0bbb2b1aace3695ce869da9762624ff in
preparation of merging in the proper fix (espfix64).
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/x86/kernel/ldt.c | 4 +---
arch/x86/vdso/vdso32-setup.c | 8 --------
2 files changed, 1 insertion(+), 11 deletions(-)
--- a/arch/x86/kernel/ldt.c
+++ b/arch/x86/kernel/ldt.c
@@ -20,8 +20,6 @@
#include <asm/mmu_context.h>
#include <asm/syscalls.h>
-int sysctl_ldt16 = 0;
-
#ifdef CONFIG_SMP
static void flush_ldt(void *current_mm)
{
@@ -236,7 +234,7 @@ static int write_ldt(void __user *ptr, u
* IRET leaking the high bits of the kernel stack address.
*/
#ifdef CONFIG_X86_64
- if (!ldt_info.seg_32bit && !sysctl_ldt16) {
+ if (!ldt_info.seg_32bit) {
error = -EINVAL;
goto out_unlock;
}
--- a/arch/x86/vdso/vdso32-setup.c
+++ b/arch/x86/vdso/vdso32-setup.c
@@ -41,7 +41,6 @@ enum {
#ifdef CONFIG_X86_64
#define vdso_enabled sysctl_vsyscall32
#define arch_setup_additional_pages syscall32_setup_pages
-extern int sysctl_ldt16;
#endif
/*
@@ -380,13 +379,6 @@ static ctl_table abi_table2[] = {
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = proc_dointvec
- },
- {
- .procname = "ldt16",
- .data = &sysctl_ldt16,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec
},
{}
};
next prev parent reply other threads:[~2014-08-05 18:14 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-05 18:13 [PATCH 3.10 00/27] 3.10.52-stable review Greg Kroah-Hartman
2014-08-05 18:13 ` [PATCH 3.10 01/27] crypto: af_alg - properly label AF_ALG socket Greg Kroah-Hartman
2014-08-05 18:13 ` [PATCH 3.10 02/27] ARM: 8115/1: LPAE: reduce damage caused by idmap to virtual memory layout Greg Kroah-Hartman
2014-08-05 18:13 ` [PATCH 3.10 03/27] cfg80211: fix mic_failure tracing Greg Kroah-Hartman
2014-08-05 18:13 ` [PATCH 3.10 04/27] rapidio/tsi721_dma: fix failure to obtain transaction descriptor Greg Kroah-Hartman
2014-08-05 18:13 ` [PATCH 3.10 05/27] scsi: handle flush errors properly Greg Kroah-Hartman
2014-08-05 18:13 ` [PATCH 3.10 06/27] mm, thp: do not allow thp faults to avoid cpuset restrictions Greg Kroah-Hartman
2014-08-05 18:13 ` [PATCH 3.10 07/27] staging: vt6655: Fix disassociated messages every 10 seconds Greg Kroah-Hartman
2014-08-05 18:14 ` [PATCH 3.10 08/27] iio: buffer: Fix demux table creation Greg Kroah-Hartman
2014-08-05 18:14 ` [PATCH 3.10 09/27] printk: rename printk_sched to printk_deferred Greg Kroah-Hartman
2014-08-05 18:14 ` [PATCH 3.10 10/27] timer: Fix lock inversion between hrtimer_bases.lock and scheduler locks Greg Kroah-Hartman
2014-08-05 18:14 ` Greg Kroah-Hartman [this message]
2014-08-05 18:14 ` [PATCH 3.10 12/27] x86-64, espfix: Dont leak bits 31:16 of %esp returning to 16-bit stack Greg Kroah-Hartman
2014-08-06 15:16 ` Luis Henriques
2014-08-06 15:24 ` Greg Kroah-Hartman
2014-08-06 15:55 ` Luis Henriques
2014-08-07 17:13 ` Greg Kroah-Hartman
2014-08-07 17:29 ` Greg Kroah-Hartman
2014-08-05 18:14 ` [PATCH 3.10 13/27] x86, espfix: Move espfix definitions into a separate header file Greg Kroah-Hartman
2014-08-05 18:14 ` [PATCH 3.10 14/27] x86, espfix: Fix broken header guard Greg Kroah-Hartman
2014-08-05 18:14 ` [PATCH 3.10 15/27] x86, espfix: Make espfix64 a Kconfig option, fix UML Greg Kroah-Hartman
2014-08-05 18:14 ` [PATCH 3.10 16/27] x86, espfix: Make it possible to disable 16-bit support Greg Kroah-Hartman
2014-08-05 18:14 ` [PATCH 3.10 17/27] x86_64/entry/xen: Do not invoke espfix64 on Xen Greg Kroah-Hartman
2014-08-05 18:14 ` [PATCH 3.10 18/27] staging: vt6655: Fix Warning on boot handle_irq_event_percpu Greg Kroah-Hartman
2014-08-05 18:14 ` [PATCH 3.10 19/27] Revert "mac80211: move "bufferable MMPDU" check to fix AP mode scan" Greg Kroah-Hartman
2014-08-05 18:14 ` [PATCH 3.10 20/27] net: mvneta: increase the 64-bit rx/tx stats out of the hot path Greg Kroah-Hartman
2014-08-05 18:14 ` [PATCH 3.10 21/27] net: mvneta: use per_cpu stats to fix an SMP lock up Greg Kroah-Hartman
2014-08-05 18:14 ` [PATCH 3.10 22/27] net: mvneta: do not schedule in mvneta_tx_timeout Greg Kroah-Hartman
2014-08-05 18:14 ` [PATCH 3.10 23/27] net: mvneta: add missing bit descriptions for interrupt masks and causes Greg Kroah-Hartman
2014-08-05 18:14 ` [PATCH 3.10 24/27] net: mvneta: replace Tx timer with a real interrupt Greg Kroah-Hartman
2014-08-05 18:14 ` [PATCH 3.10 25/27] net/l2tp: dont fall back on UDP [get|set]sockopt Greg Kroah-Hartman
2014-08-05 18:14 ` [PATCH 3.10 26/27] lib/btree.c: fix leak of whole btree nodes Greg Kroah-Hartman
2014-08-05 18:14 ` [PATCH 3.10 27/27] x86/espfix/xen: Fix allocation of pages for paravirt page tables Greg Kroah-Hartman
2014-08-05 23:08 ` [PATCH 3.10 00/27] 3.10.52-stable review Shuah Khan
2014-08-06 2:34 ` Guenter Roeck
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=20140805181344.601302608@linuxfoundation.org \
--to=gregkh@linuxfoundation.org \
--cc=hpa@zytor.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).