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| author | Michael Neuling <mikey@neuling.org> | 2010-02-22 12:44:24 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-02-22 19:50:34 -0800 |
| commit | a17e18790a8c47113a73139d54a375dc9ccd8f08 (patch) | |
| tree | 2f85b0265e004826d76614f27c133063499b855e | |
| parent | 89f3f2199084a160a3a45fa6d9af235696321758 (diff) | |
| download | linux-a17e18790a8c47113a73139d54a375dc9ccd8f08.tar.gz linux-a17e18790a8c47113a73139d54a375dc9ccd8f08.tar.bz2 linux-a17e18790a8c47113a73139d54a375dc9ccd8f08.zip | |
fs/exec.c: fix initial stack reservation
803bf5ec259941936262d10ecc84511b76a20921 ("fs/exec.c: restrict initial
stack space expansion to rlimit") attempts to limit the initial stack to
20*PAGE_SIZE. Unfortunately, in attempting ensure the stack is not
reduced in size, we ended up not changing the stack at all.
This size reduction check is not necessary as the expand_stack call does
this already.
This caused a regression in UML resulting in most guest processes being
killed.
Signed-off-by: Michael Neuling <mikey@neuling.org>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Acked-by: WANG Cong <xiyou.wangcong@gmail.com>
Cc: Anton Blanchard <anton@samba.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: James Morris <jmorris@namei.org>
Cc: Serge Hallyn <serue@us.ibm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Jouni Malinen <j@w1.fi>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | fs/exec.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/fs/exec.c b/fs/exec.c index e95c692ef0e4..cce6bbdbdbb1 100644 --- a/fs/exec.c +++ b/fs/exec.c @@ -637,7 +637,6 @@ int setup_arg_pages(struct linux_binprm *bprm, * will align it up. */ rlim_stack = rlimit(RLIMIT_STACK) & PAGE_MASK; - rlim_stack = min(rlim_stack, stack_size); #ifdef CONFIG_STACK_GROWSUP if (stack_size + stack_expand > rlim_stack) stack_base = vma->vm_start + rlim_stack; |