* [4.2.y-ckt stable] Patch "x86/boot: Double BOOT_HEAP_SIZE to 64KB" has been added to the 4.2.y-ckt tree
@ 2016-01-27 0:11 Kamal Mostafa
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From: Kamal Mostafa @ 2016-01-27 0:11 UTC (permalink / raw)
To: H.J. Lu
Cc: H. Peter Anvin, Andy Lutomirski, Borislav Petkov, Brian Gerst,
Denys Vlasenko, Linus Torvalds, Peter Zijlstra, Thomas Gleixner,
linux-kernel, Ingo Molnar, Kamal Mostafa, kernel-team
This is a note to let you know that I have just added a patch titled
x86/boot: Double BOOT_HEAP_SIZE to 64KB
to the linux-4.2.y-queue branch of the 4.2.y-ckt extended stable tree
which can be found at:
http://kernel.ubuntu.com/git/ubuntu/linux.git/log/?h=linux-4.2.y-queue
This patch is scheduled to be released in version 4.2.8-ckt3.
If you, or anyone else, feels it should not be added to this tree, please
reply to this email.
For more information about the 4.2.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable
Thanks.
-Kamal
---8<------------------------------------------------------------
>From 965d597dd8ad9c9e0d4aebd9fa5e9bff70affd69 Mon Sep 17 00:00:00 2001
From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Mon, 4 Jan 2016 10:17:09 -0800
Subject: x86/boot: Double BOOT_HEAP_SIZE to 64KB
commit 8c31902cffc4d716450be549c66a67a8a3dd479c upstream.
When decompressing kernel image during x86 bootup, malloc memory
for ELF program headers may run out of heap space, which leads
to system halt. This patch doubles BOOT_HEAP_SIZE to 64KB.
Tested with 32-bit kernel which failed to boot without this patch.
Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
arch/x86/include/asm/boot.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/include/asm/boot.h b/arch/x86/include/asm/boot.h
index 4fa687a..6b8d6e8 100644
--- a/arch/x86/include/asm/boot.h
+++ b/arch/x86/include/asm/boot.h
@@ -27,7 +27,7 @@
#define BOOT_HEAP_SIZE 0x400000
#else /* !CONFIG_KERNEL_BZIP2 */
-#define BOOT_HEAP_SIZE 0x8000
+#define BOOT_HEAP_SIZE 0x10000
#endif /* !CONFIG_KERNEL_BZIP2 */
--
1.9.1
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2016-01-27 0:11 [4.2.y-ckt stable] Patch "x86/boot: Double BOOT_HEAP_SIZE to 64KB" has been added to the 4.2.y-ckt tree Kamal Mostafa
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