This is a note to let you know that I've just added the patch titled
c/r: prctl: fix build error for no-MMU case
to the 3.5-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
c-r-prctl-fix-build-error-for-no-mmu-case.patch
and it can be found in the queue-3.5 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From be8cfc4af15cf611dfeb66a1fb5df43d5f1e280a Mon Sep 17 00:00:00 2001
From: Mark Salter <[email protected]>
Date: Mon, 24 Sep 2012 17:17:38 -0700
Subject: c/r: prctl: fix build error for no-MMU case
From: Mark Salter <[email protected]>
commit be8cfc4af15cf611dfeb66a1fb5df43d5f1e280a upstream.
Commit 1ad75b9e1628 ("c/r: prctl: add minimal address test to
PR_SET_MM") added some address checking to prctl_set_mm() used by
checkpoint-restore. This causes a build error for no-MMU systems:
kernel/sys.c: In function 'prctl_set_mm':
kernel/sys.c:1868:34: error: 'mmap_min_addr' undeclared (first use in this
function)
The test for mmap_min_addr doesn't make a lot of sense for no-MMU code
as noted in commit 6e1415467614 ("NOMMU: Optimise away the
{dac_,}mmap_min_addr tests").
This patch defines mmap_min_addr as 0UL in the no-MMU case so that the
compiler will optimize away tests for "addr < mmap_min_addr".
Signed-off-by: Mark Salter <[email protected]>
Reviewed-by: Cyrill Gorcunov <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
include/linux/security.h | 1 +
1 file changed, 1 insertion(+)
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -118,6 +118,7 @@ void reset_security_ops(void);
extern unsigned long mmap_min_addr;
extern unsigned long dac_mmap_min_addr;
#else
+#define mmap_min_addr 0UL
#define dac_mmap_min_addr 0UL
#endif
Patches currently in stable-queue which might be from [email protected] are
queue-3.5/c-r-prctl-fix-build-error-for-no-mmu-case.patch
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