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Message-Id: <1344017192-29878-1-git-send-email-richard@nod.at>
Date: Fri, 3 Aug 2012 20:06:32 +0200
From: Richard Weinberger <richard@....at>
To: linux-kernel@...r.kernel.org
Cc: linux-doc@...r.kernel.org,
dvhart@...ux.intel.com,
paul.gortmaker@...driver.com,
jkosina@...e.cz,
rob@...dley.net,
Richard Weinberger <richard@....at>,
Randy Dunlap <rdunlap@...otime.net>,
Peter Zijlstra <a.p.zijlstra@...llo.nl>,
"Eric W. Biederman" <ebiederm@...ssion.com>,
David Howells <dhowells@...hat.com>,
"Serge E. Hallyn" <serge.hallyn@...onical.com>,
kernel-hardening@...ts.openwall.com,
spender@...ecurity.net,
keescook@...omium.org,
tglx@...utronix.de,
Cyrill Gorcunov <gorcunov@...nvz.org>,
xemul@...allels.com,
<stable@...r.kernel.org> # 3.4.x
Subject: [PATCH] Revert "futex: Mark get_robust_list as deprecated"
get_robust_list has at least two valid use cases.
1. checkpoint/restore in userspace
2. post mortem analysis
Cc: Randy Dunlap <rdunlap@...otime.net>
Cc: Darren Hart <dvhart@...ux.intel.com>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Jiri Kosina <jkosina@...e.cz>
Cc: Eric W. Biederman <ebiederm@...ssion.com>
Cc: David Howells <dhowells@...hat.com>
Cc: Serge E. Hallyn <serge.hallyn@...onical.com>
Cc: kernel-hardening@...ts.openwall.com
Cc: spender@...ecurity.net
Cc: keescook@...omium.org
Cc: tglx@...utronix.de
Cc: Cyrill Gorcunov <gorcunov@...nvz.org>
Cc: xemul@...allels.com
Cc: <stable@...r.kernel.org> # 3.4.x
Cc: <stable@...r.kernel.org> # 3.5.x
Signed-off-by: Richard Weinberger <richard@....at>
Acked-by: Cyrill Gorcunov <gorcunov@...nvz.org>
Acked-by: "Eric W. Biederman" <ebiederm@...ssion.com>
Acked-by: Kees Cook <keescook@...omium.org>
---
Documentation/feature-removal-schedule.txt | 10 ----------
kernel/futex.c | 2 --
kernel/futex_compat.c | 2 --
3 files changed, 14 deletions(-)
diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt
index afaff31..a25482e 100644
--- a/Documentation/feature-removal-schedule.txt
+++ b/Documentation/feature-removal-schedule.txt
@@ -506,16 +506,6 @@ Who: Sebastian Andrzej Siewior <sebastian@...akpoint.cc>
----------------------------
-What: get_robust_list syscall
-When: 2013
-Why: There appear to be no production users of the get_robust_list syscall,
- and it runs the risk of leaking address locations, allowing the bypass
- of ASLR. It was only ever intended for debugging, so it should be
- removed.
-Who: Kees Cook <keescook@...omium.org>
-
-----------------------------
-
What: Removing the pn544 raw driver.
When: 3.6
Why: With the introduction of the NFC HCI and SHDL kernel layers, pn544.c
diff --git a/kernel/futex.c b/kernel/futex.c
index e2b0fb9..d701be5 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -2449,8 +2449,6 @@ SYSCALL_DEFINE3(get_robust_list, int, pid,
if (!futex_cmpxchg_enabled)
return -ENOSYS;
- WARN_ONCE(1, "deprecated: get_robust_list will be deleted in 2013.\n");
-
rcu_read_lock();
ret = -ESRCH;
diff --git a/kernel/futex_compat.c b/kernel/futex_compat.c
index 83e368b..a9642d5 100644
--- a/kernel/futex_compat.c
+++ b/kernel/futex_compat.c
@@ -142,8 +142,6 @@ compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr,
if (!futex_cmpxchg_enabled)
return -ENOSYS;
- WARN_ONCE(1, "deprecated: get_robust_list will be deleted in 2013.\n");
-
rcu_read_lock();
ret = -ESRCH;
--
1.7.10.4
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