fs/exec.c: fix initial stack reservation (regression in 2.6.32.9)
svn path=/dists/sid/linux-2.6/; revision=15266
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@ -10,6 +10,7 @@ linux-2.6 (2.6.32-9) UNRELEASED; urgency=low
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(Closes: #508108)
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* sfc: Apply fixes from 2.6.33
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* ath9k: Add support for AR2427
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* fs/exec.c: fix initial stack reservation (regression in 2.6.32.9)
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[ maximilian attems]
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* Postinst don't refercence k-p related manpage. (closes: #542208)
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@ -0,0 +1,47 @@
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From a17e18790a8c47113a73139d54a375dc9ccd8f08 Mon Sep 17 00:00:00 2001
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From: Michael Neuling <mikey@neuling.org>
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Date: Mon, 22 Feb 2010 12:44:24 -0800
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Subject: [PATCH] fs/exec.c: fix initial stack reservation
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803bf5ec259941936262d10ecc84511b76a20921 ("fs/exec.c: restrict initial
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stack space expansion to rlimit") attempts to limit the initial stack to
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20*PAGE_SIZE. Unfortunately, in attempting ensure the stack is not
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reduced in size, we ended up not changing the stack at all.
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This size reduction check is not necessary as the expand_stack call does
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this already.
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This caused a regression in UML resulting in most guest processes being
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killed.
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Signed-off-by: Michael Neuling <mikey@neuling.org>
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Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
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Acked-by: WANG Cong <xiyou.wangcong@gmail.com>
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Cc: Anton Blanchard <anton@samba.org>
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Cc: Oleg Nesterov <oleg@redhat.com>
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Cc: James Morris <jmorris@namei.org>
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Cc: Serge Hallyn <serue@us.ibm.com>
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Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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Cc: Jouni Malinen <j@w1.fi>
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Cc: <stable@kernel.org>
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Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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---
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fs/exec.c | 1 -
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1 files changed, 0 insertions(+), 1 deletions(-)
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diff --git a/fs/exec.c b/fs/exec.c
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index e95c692..cce6bbd 100644
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--- a/fs/exec.c
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+++ b/fs/exec.c
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@@ -637,7 +637,6 @@ int setup_arg_pages(struct linux_binprm *bprm,
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* will align it up.
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*/
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rlim_stack = rlimit(RLIMIT_STACK) & PAGE_MASK;
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- rlim_stack = min(rlim_stack, stack_size);
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#ifdef CONFIG_STACK_GROWSUP
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if (stack_size + stack_expand > rlim_stack)
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stack_base = vma->vm_start + rlim_stack;
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--
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1.6.6.2
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@ -22,3 +22,4 @@
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+ features/arm/openrd-base-uart.patch
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+ features/arm/dns323-rev-a1-powerled.patch
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+ bugfix/all/vgaarb-fix-target-default-passing.patch
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+ bugfix/all/fs-exec.c-fix-initial-stack-reservation.patch
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