The commit is pushed to "branch-rh7-3.10.0-229.7.2-ovz" and will appear at
https://src.openvz.org/scm/ovz/vzkernel.git
after rh7-3.10.0-229.7.2.vz7.6.6
------>
commit 498baa3fdd64742725539c281086d23aee327fa4
Author: Andrey Ryabinin <aryabi...@odin.com>
Date: Thu Sep 3 19:27:44 2015 +0400
ms/kernel: add support for .init_array.* constructors
https://jira.sw.ru/browse/PSBM-26429
From: Andrey Ryabinin <a.ryabi...@samsung.com>
commit 9ddf82521c86ae07af79dbe5a93c52890f2bab23 upstream.
KASan uses constructors for initializing redzones for global variables.
Globals instrumentation in GCC 4.9.2 produces constructors with priority
(.init_array.00099)
Currently kernel ignores such constructors. Only constructors with
default priority supported (.init_array)
This patch adds support for constructors with priorities. For kernel
image we put pointers to constructors between __ctors_start/__ctors_end
and do_ctors() will call them on start up. For modules we merge
.init_array.* sections into resulting .init_array. Module code properly
handles constructors in .init_array section.
Signed-off-by: Andrey Ryabinin <a.ryabi...@samsung.com>
Cc: Dmitry Vyukov <dvyu...@google.com>
Cc: Konstantin Serebryany <k...@google.com>
Cc: Dmitry Chernenkov <dmit...@google.com>
Signed-off-by: Andrey Konovalov <adech...@gmail.com>
Cc: Yuri Gribov <tetra2...@gmail.com>
Cc: Konstantin Khlebnikov <koc...@gmail.com>
Cc: Sasha Levin <sasha.le...@oracle.com>
Cc: Christoph Lameter <c...@linux.com>
Cc: Joonsoo Kim <iamjoonsoo....@lge.com>
Cc: Dave Hansen <dave.han...@intel.com>
Cc: Andi Kleen <a...@firstfloor.org>
Cc: Ingo Molnar <mi...@elte.hu>
Cc: Thomas Gleixner <t...@linutronix.de>
Cc: "H. Peter Anvin" <h...@zytor.com>
Cc: Christoph Lameter <c...@linux.com>
Cc: Pekka Enberg <penb...@kernel.org>
Cc: David Rientjes <rient...@google.com>
Signed-off-by: Andrew Morton <a...@linux-foundation.org>
Signed-off-by: Linus Torvalds <torva...@linux-foundation.org>
Signed-off-by: Andrey Ryabinin <aryabi...@odin.com>
Signed-off-by: Andrey Ryabinin <aryabi...@odin.com>
---
include/asm-generic/vmlinux.lds.h | 1 +
scripts/module-common.lds | 4 ++++
2 files changed, 5 insertions(+)
diff --git a/include/asm-generic/vmlinux.lds.h
b/include/asm-generic/vmlinux.lds.h
index 72e4edc..5c90355 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -481,6 +481,7 @@
#define KERNEL_CTORS() . = ALIGN(8); \
VMLINUX_SYMBOL(__ctors_start) = .; \
*(.ctors) \
+ *(SORT(.init_array.*)) \
*(.init_array) \
VMLINUX_SYMBOL(__ctors_end) = .;
#else
diff --git a/scripts/module-common.lds b/scripts/module-common.lds
index 0865b3e..10fa8bf 100644
--- a/scripts/module-common.lds
+++ b/scripts/module-common.lds
@@ -16,4 +16,8 @@ SECTIONS {
__kcrctab_unused : { *(SORT(___kcrctab_unused+*)) }
__kcrctab_unused_gpl : { *(SORT(___kcrctab_unused_gpl+*)) }
__kcrctab_gpl_future : { *(SORT(___kcrctab_gpl_future+*)) }
+
+
+ . = ALIGN(8);
+ .init_array 0 : { *(SORT(.init_array.*)) *(.init_array) }
}
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