+ lib-vsprintfc-improve-sanity-check-in-vsnprintf.patch added to -mm tree

+ lib-vsprintfc-improve-sanity-check-in-vsnprintf.patch added to -mm tree

[akpm]

The patch titled
     Subject: lib/vsprintf.c: improve sanity check in vsnprintf()
has been added to the -mm tree.  Its filename is
     lib-vsprintfc-improve-sanity-check-in-vsnprintf.patch

This patch should soon appear at
    http://ozlabs.org/~akpm/mmots/broken-out/lib-vsprintfc-improve-sanity-check-in-vsnprintf.patch
and later at
    http://ozlabs.org/~akpm/mmotm/broken-out/lib-vsprintfc-improve-sanity-check-in-vsnprintf.patch

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------------------------------------------------------
From: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Subject: lib/vsprintf.c: improve sanity check in vsnprintf()

On 64 bit, size may very well be huge even if bit 31 happens to be 0. 
Somehow it doesn't feel right that one can pass a 5 GiB buffer but not a 3
GiB one.  So cap at INT_MAX as was probably the intention all along.  This
is also the made-up value passed by sprintf and vsprintf.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 lib/vsprintf.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -puN lib/vsprintf.c~lib-vsprintfc-improve-sanity-check-in-vsnprintf lib/vsprintf.c
--- a/lib/vsprintf.c~lib-vsprintfc-improve-sanity-check-in-vsnprintf
+++ a/lib/vsprintf.c
@@ -1727,7 +1727,7 @@ int vsnprintf(char *buf, size_t size, co
 
 	/* Reject out-of-range values early.  Large positive sizes are
 	   used for unknown buffer sizes. */
-	if (WARN_ON_ONCE((int) size < 0))
+	if (WARN_ON_ONCE(size > INT_MAX))
 		return 0;
 
 	str = buf;
_

Patches currently in -mm which might be from linux@rasmusvillemoes.dk are

lib-vsprintfc-consume-p-in-format_decode.patch
lib-vsprintfc-improve-sanity-check-in-vsnprintf.patch
lib-vsprintfc-dont-try-to-fix-pointer-wrap-around.patch
lib-vsprintfc-replace-while-with-do-while-in-skip_atoi.patch
lib-string_get_size-remove-redundant-prefixes.patch
lib-string_get_size-use-32-bit-arithmetic-when-possible.patch
lib-string_get_size-return-void.patch
lib-bitmap-more-signed-unsigned-conversions.patch
linux-nodemaskh-update-bitmap-wrappers-to-take-unsigned-int.patch
linux-cpumaskh-update-bitmap-wrappers-to-take-unsigned-int.patch
lib-bitmap-update-bitmap_onto-to-unsigned.patch
lib-bitmap-update-bitmap_onto-to-unsigned-checkpatch-fixes.patch
lib-bitmap-change-parameters-of-bitmap_fold-to-unsigned.patch
lib-bitmap-change-parameters-of-bitmap_fold-to-unsigned-fix.patch
lib-bitmap-simplify-bitmap_pos_to_ord.patch
lib-bitmap-simplify-bitmap_ord_to_pos.patch
lib-bitmap-make-the-bits-parameter-of-bitmap_remap-unsigned.patch
lib-remove-strnicmp.patch
lib-interval_treec-simplify-includes.patch
lib-sortc-use-simpler-includes.patch
lib-dynamic_queue_limitsc-simplify-includes.patch
lib-halfmd4c-simplify-includes.patch
lib-idrc-remove-redundant-include.patch
lib-genallocc-remove-redundant-include.patch
lib-list_sortc-rearrange-includes.patch
lib-md5c-simplify-include.patch
lib-llistc-remove-redundant-include.patch
lib-kobject_ueventc-remove-redundant-include.patch
lib-nlattrc-remove-redundant-include.patch
lib-plistc-remove-redundant-include.patch
lib-radix-treec-change-to-simpler-include.patch
lib-show_memc-remove-redundant-include.patch
lib-sortc-move-include-inside-if-0.patch
lib-stmp_devicec-replace-moduleh-include.patch
lib-strncpy_from_userc-replace-moduleh-include.patch
lib-percpu_idac-remove-redundant-includes.patch
lib-lcmc-replace-include.patch
lib-bitmapc-change-prototype-of-bitmap_copy_le.patch
lib-bitmapc-elide-bitmap_copy_le-on-little-endian.patch
lib-bitmap-change-bitmap_shift_right-to-take-unsigned-parameters.patch
lib-bitmap-eliminate-branch-in-__bitmap_shift_right.patch
lib-bitmap-remove-redundant-code-from-__bitmap_shift_right.patch
lib-bitmap-yet-another-simplification-in-__bitmap_shift_right.patch
lib-bitmap-change-bitmap_shift_left-to-take-unsigned-parameters.patch
lib-bitmap-eliminate-branch-in-__bitmap_shift_left.patch
lib-bitmap-remove-redundant-code-from-__bitmap_shift_left.patch
checkpatch-emit-an-error-when-using-predefined-timestamp-macros.patch
linux-next.patch