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Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Shuah Khan , John Hubbard , Kalesh Singh , Anshuman Khandual , Park Tae-sun , linux-mm@kvack.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, Sarthak Sharma Subject: [PATCH RESEND 4/9] selftests/mm: mremap_test: correct multiple VMA range size Date: Thu, 24 Sep 2026 10:30:04 +0530 Message-ID: <20260924050009.19974-5-sarthak.sharma@arm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260924050009.19974-1-sarthak.sharma@arm.com> References: <20260924050009.19974-1-sarthak.sharma@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: 80A871C0005 X-Rspam-User: X-Stat-Signature: snzdy79br8m5pnkkp5rwfrei4oq5jfjj X-HE-Tag: 1790226043-398271 X-HE-Meta: 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 Bz2UR71J bMb9w+f1X9EMtzsVLHqwlkrsRefx29jUdy182JDmTWzpKuVZM+EhhqBXTNUUWlOGg7KQ+ljmSBMK8/47be407gql+2BnuPk8YSDb2FW5ju9VX3xMzEUmvAo4Nl6xLOrvUZCAj+M0MCh4XOEciWa+YJy6iDu/oJXsq+OSmMl1YHB2+K3US9PbhsGMOp/SYuhz2U9N+yw/J18pGAr5OZVt2EGhemR/X+Geeldlw12cwfoA3dwIOLYvH5uNbRI1gW17t38g7rjPoeBeYrmNt/AyBXtBKT7jShyMvay+N Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: In the test mremap_move_multiple_vmas(), pages 4 to 6 form a single VMA. But the helper function is_multiple_vma_range_ok() checks pages 4 and 5 as one range and treats page 6 separately. Check all three pages as a single range and skip the page 6 iteration to match the actual VMA layout. Fixes: d53f248258e1 ("tools/testing/selftests: extend mremap_test to test multi-VMA mremap") Signed-off-by: Sarthak Sharma --- tools/testing/selftests/mm/mremap_test.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/mm/mremap_test.c b/tools/testing/selftests/mm/mremap_test.c index ba9b7f7566d0..869df22d46db 100644 --- a/tools/testing/selftests/mm/mremap_test.c +++ b/tools/testing/selftests/mm/mremap_test.c @@ -373,7 +373,10 @@ static bool is_multiple_vma_range_ok(unsigned int pattern_seed, for (i = 0; i <= 10; i += 2) { int j; char *buf = &ptr[i * page_size]; - size_t size = i == 4 ? 2 * page_size : page_size; + size_t size = i == 4 ? 3 * page_size : page_size; + + if (i == 6) + continue; for (j = 0; j < size; j++) { char chr = rand(); -- 2.53.0