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Fri, 25 Sep 2026 18:27:11 -0700 (PDT) Received: from FT6N242TWK ([223.181.117.160]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-341f2b18cbfsm6746171eec.30.2026.09.25.18.27.09 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Fri, 25 Sep 2026 18:27:11 -0700 (PDT) From: Shashank Mohan Jain To: Yury Norov Cc: Rasmus Villemoes , Andrew Morton , linux-kernel@vger.kernel.org Subject: [PATCH v2 6/6] bitmap: test bitmap_parselist() with a group size close to UINT_MAX Date: Sat, 26 Sep 2026 06:56:51 +0530 Message-ID: <20260926012651.15524-7-jain.sm@gmail.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260926012651.15524-1-jain.sm@gmail.com> References: <20260926012651.15524-1-jain.sm@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add bitmap_parselist() cases where the group size makes start + group_len overflow an unsigned int. Before "bitmap: bitmap_parselist(): don't wrap around on a huge group size" the region walk wrapped around and also set bit 0. Assisted-by: LLM Signed-off-by: Shashank Mohan Jain --- lib/test_bitmap.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/lib/test_bitmap.c b/lib/test_bitmap.c index f316a82840f5..ba09d057f47f 100644 --- a/lib/test_bitmap.c +++ b/lib/test_bitmap.c @@ -502,6 +502,8 @@ static const struct test_bitmap_parselist parselist_tests[] __initconst = { {0, "0-N:1/3,1-N:1/3,2-N:1/3", &exp1[8 * step], 32, 0}, {0, "0-31:1/3,1-31:1/3,2-31:1/3", &exp1[8 * step], 32, 0}, {0, "1-10:8/12,8-31:24/29,0-31:0/3", &exp1[9 * step], 32, 0}, + {0, "1-1:1/4294967295", &exp1[1 * step], 32, 0}, + {0, "15-15:1/4294967281", &exp1[13 * step], 32, 0}, {0, "all", &exp1[8 * step], 32, 0}, {0, "0, 1, all, ", &exp1[8 * step], 32, 0}, -- 2.43.0