From nobody Wed Dec 17 17:47:21 2025 Received: from mail.ispras.ru (mail.ispras.ru [83.149.199.84]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 16B8A1E9B1C for ; Fri, 3 Oct 2025 15:13:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=83.149.199.84 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759504407; cv=none; b=nL6rgKdbb2zyjxgDF9yQ4z6Phc5Te+gvLNBA/opeyLcyRbx+Qof/QEiKbaW0yDI9Qqs9m/prkdFws9FW8N4PHXKcFGyfw8GwsO/ZVSV7XYPmjMhatGvhJPpFFfzLo8NliZ1nuXVDZ/PAvGrmpzUwxR8CLNlAgTQXskso1FiXzTA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759504407; c=relaxed/simple; bh=vB6BD3+74H6PBZk5qiiyqgX55cMRHdfH4PdyGZzuCGk=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=iEuHbETCiFHgwdbjdnb0B+7Yw+LM4sSKcHPXcfnnUUnxSwgzzuzaaGzxTV1MTCeRMhnxmtyEM1sNJXYFWbTIkw6xVdC7LiZ7UITIemsOJIHuNUipk7Gibhf0MWVMAOu+ZpMM8YbnS8crE5GLatbufeksQBTM+712ucpBgjwUaxI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ispras.ru; spf=pass smtp.mailfrom=ispras.ru; dkim=pass (1024-bit key) header.d=ispras.ru header.i=@ispras.ru header.b=azGIcTlq; arc=none smtp.client-ip=83.149.199.84 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=ispras.ru Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ispras.ru Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=ispras.ru header.i=@ispras.ru header.b="azGIcTlq" Received: from localhost.localdomain (unknown [77.106.22.74]) by mail.ispras.ru (Postfix) with ESMTPSA id A68114076196; Fri, 3 Oct 2025 15:13:19 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 mail.ispras.ru A68114076196 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ispras.ru; s=default; t=1759504400; bh=HDByeUCiDwlLYQ/3uCoLDW7qZT2XQme1mO6pbvFE+JE=; h=From:To:Cc:Subject:Date:From; b=azGIcTlqn1iwvjg8G1ry3BBWr+L1KoaPvPvOZS5QD9A6KjhMgl6/s6ynTYOv8Hm0b Nn6WL6b0/rpkoBdb7oW+V4l4cd2RfqmVdSWYHQtMDya/DKqlsH8XPJGjDeyP5yqSfv oUSj4lSvT5n03yG/oJBf+F76cHZNP0uFQLVbaJ34= From: Matvey Kovalev To: Jason Wessel Cc: Matvey Kovalev , Daniel Thompson , Douglas Anderson , kgdb-bugreport@lists.sourceforge.net, linux-kernel@vger.kernel.org, lvc-project@linuxtesting.org Subject: [PATCH] kdb: delete unexecuted if-block in kdb_get_kbd_char() Date: Fri, 3 Oct 2025 18:12:02 +0300 Message-ID: <20251003151220.1580-1-matvey.kovalev@ispras.ru> X-Mailer: git-send-email 2.43.0.windows.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Bits of scancode are dropped except 7 low-order ones. So, scancode can't be equal 0xe0. Found by Linux Verification Center (linuxtesting.org) with SVACE. Signed-off-by: Matvey Kovalev --- kernel/debug/kdb/kdb_keyboard.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/kernel/debug/kdb/kdb_keyboard.c b/kernel/debug/kdb/kdb_keyboar= d.c index 3a74604fdb8a7..386d30e530b78 100644 --- a/kernel/debug/kdb/kdb_keyboard.c +++ b/kernel/debug/kdb/kdb_keyboard.c @@ -145,9 +145,6 @@ int kdb_get_kbd_char(void) return CTRL('F'); } =20 - if (scancode =3D=3D 0xe0) - return -1; - /* * For Japanese 86/106 keyboards * See comment in drivers/char/pc_keyb.c. --=20 2.43.0.windows.1