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Message-Id: <20180521210453.286442585@linuxfoundation.org>
Date: Mon, 21 May 2018 23:11:14 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Matthew Wilcox <mawilcox@...rosoft.com>,
Michael Ellerman <mpe@...erman.id.au>,
Kees Cook <keescook@...omium.org>,
Yury Norov <ynorov@...iumnetworks.com>,
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
Geert Uytterhoeven <geert@...ux-m68k.org>,
Andrew Morton <akpm@...ux-foundation.org>,
Linus Torvalds <torvalds@...ux-foundation.org>
Subject: [PATCH 4.14 24/95] lib/test_bitmap.c: fix bitmap optimisation tests to report errors correctly
4.14-stable review patch. If anyone has any objections, please let me know.
------------------
From: Matthew Wilcox <mawilcox@...rosoft.com>
commit 1e3054b98c5415d5cb5f8824fc33b548ae5644c3 upstream.
I had neglected to increment the error counter when the tests failed,
which made the tests noisy when they fail, but not actually return an
error code.
Link: http://lkml.kernel.org/r/20180509114328.9887-1-mpe@ellerman.id.au
Fixes: 3cc78125a081 ("lib/test_bitmap.c: add optimisation tests")
Signed-off-by: Matthew Wilcox <mawilcox@...rosoft.com>
Signed-off-by: Michael Ellerman <mpe@...erman.id.au>
Reported-by: Michael Ellerman <mpe@...erman.id.au>
Tested-by: Michael Ellerman <mpe@...erman.id.au>
Reviewed-by: Kees Cook <keescook@...omium.org>
Cc: Yury Norov <ynorov@...iumnetworks.com>
Cc: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc: Geert Uytterhoeven <geert@...ux-m68k.org>
Cc: <stable@...r.kernel.org> [4.13+]
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
lib/test_bitmap.c | 21 +++++++++++++++------
1 file changed, 15 insertions(+), 6 deletions(-)
--- a/lib/test_bitmap.c
+++ b/lib/test_bitmap.c
@@ -434,23 +434,32 @@ static void noinline __init test_mem_opt
unsigned int start, nbits;
for (start = 0; start < 1024; start += 8) {
- memset(bmap1, 0x5a, sizeof(bmap1));
- memset(bmap2, 0x5a, sizeof(bmap2));
for (nbits = 0; nbits < 1024 - start; nbits += 8) {
+ memset(bmap1, 0x5a, sizeof(bmap1));
+ memset(bmap2, 0x5a, sizeof(bmap2));
+
bitmap_set(bmap1, start, nbits);
__bitmap_set(bmap2, start, nbits);
- if (!bitmap_equal(bmap1, bmap2, 1024))
+ if (!bitmap_equal(bmap1, bmap2, 1024)) {
printk("set not equal %d %d\n", start, nbits);
- if (!__bitmap_equal(bmap1, bmap2, 1024))
+ failed_tests++;
+ }
+ if (!__bitmap_equal(bmap1, bmap2, 1024)) {
printk("set not __equal %d %d\n", start, nbits);
+ failed_tests++;
+ }
bitmap_clear(bmap1, start, nbits);
__bitmap_clear(bmap2, start, nbits);
- if (!bitmap_equal(bmap1, bmap2, 1024))
+ if (!bitmap_equal(bmap1, bmap2, 1024)) {
printk("clear not equal %d %d\n", start, nbits);
- if (!__bitmap_equal(bmap1, bmap2, 1024))
+ failed_tests++;
+ }
+ if (!__bitmap_equal(bmap1, bmap2, 1024)) {
printk("clear not __equal %d %d\n", start,
nbits);
+ failed_tests++;
+ }
}
}
}
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