From patchwork Sat Oct 19 21:16:38 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gax-c X-Patchwork-Id: 837151 Received: from mail-qk1-f194.google.com (mail-qk1-f194.google.com [209.85.222.194]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2F40A191F62; Sat, 19 Oct 2024 21:18:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.222.194 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729372684; cv=none; b=tHBxeYFj0XxmtHkKd+5tPb2X6Vl2yhm4kNV9j49XOGmkSVvTnN/E9E/qjsUpoGB8NKWNAdQATnaVyZ/yYK692Kyluvr0rzA/D52uxFPuay+RhZvR1kSuphuwhLPq9mTkRgq4ywFUFGNm0YqW+YxoS5tjUbf0poXrbqy7Kg/rQoc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729372684; c=relaxed/simple; bh=dTdREiTC3lSMXuTuhpGwejQ68yQ2Oe9QosYNulNZI4w=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=VdysUoe3bTThUGfD6loM7pL+92p/Ov+ONR5E3JyfBqli5glh1rMs70msFTfgEr7a9/nmVi4vtZcoec7wPP8AjGPX1CzRFKsKjHvbgKD72fFmffSuGpwrD7ASkCzOuo9s2nF+foJs+DVvVeiDIa49KWzxsrbJz5uMmBGJSf3tVus= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=PVk+hH3T; arc=none smtp.client-ip=209.85.222.194 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="PVk+hH3T" Received: by mail-qk1-f194.google.com with SMTP id af79cd13be357-7b14554468fso262127385a.1; Sat, 19 Oct 2024 14:18:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1729372681; x=1729977481; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=cREe+0t46PCd+30ohydq9s8xqKcE0qk+msu4UHvCf98=; b=PVk+hH3Tgw9YEtAUsIf5DbZnm1Avec84nsmlDbFCIuIzh9ms1V1LigP0hfoZVmYXIF LFAnxdJMBkAvJn8/OIm4u0hPvKpkg5PFQb1F9t5YIZNwCogsanBY48IOQlD1EL6n5PzS IYS4VG86jdP/PDtDDlV52ayd92cajXMGTV84GA7Ar+5zky1uNf1xPPGJAeT0kjlcmqUS jYUemiqvdThx4/OB3BQ9yRHgudFU+gScp915SXTGlB41nA8IXJm7F2tunRnz6F2TQ8hO I3td/QFBNrxTOCVID8ZtrzreaXd4/S2qm4oMuersBf/5B1xaV/hhvjbT52YZXbRgsk3z pMzw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1729372681; x=1729977481; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=cREe+0t46PCd+30ohydq9s8xqKcE0qk+msu4UHvCf98=; b=WMQLpW6sTIbHMYBeuXtprqRiXKvFE+W3EYRAOFDnDVmam6amwx5cmS/lWh/4nNpxDh BIXxV/HrxlmmHzxS8evbONhMQqPZQyBO2mbIZ2mytc48gqF87AcIEHoccwd4NUdLA9MZ T2XTyC2efi+iQX4LrRrWuimTbxP9gn6bYPQhkfCTV1uH3bUUYYA57RxM0LJViVc60k7R kdcUR0Upwo9sKJe6dHnofF9TUqT0bhTF9W1f5uVswD+3T/+Czo0pE8ehjxYZkqbMyZ7w BUwvj3UPivglko8mhz0rkET0jsXjC7224R1xfsdkNQV4LhLiEBl8LKsc8Ke9Hc6tFkHX gcqQ== X-Forwarded-Encrypted: i=1; AJvYcCXK1RBsV2fqp8QMdDhWAubPBq4W4YArRHumn4kHCKCh9ZU8Y3rY5LLaiAriq3Fle7aS22J11MLD3N1o0WA=@vger.kernel.org X-Gm-Message-State: AOJu0Yzemo6rD9czWohLWdDrFsUYofNpQeBYC7Lc2tMqyjD5VKqe8na5 u1LXUL/5aDjeCz5FYVmprN5iqVje0PQMP5p0QofAQNmSHfjAdR1p X-Google-Smtp-Source: AGHT+IGTyEVz8aI3jODN1tJE9vSC9Oy1azzEoFDBCx+AQpQ1VkvvuFtZiIPPtvvgieKMaHKoDMvIlQ== X-Received: by 2002:a05:620a:45a2:b0:7ae:64a2:be61 with SMTP id af79cd13be357-7b157b7ee40mr1037834485a.36.1729372680963; Sat, 19 Oct 2024 14:18:00 -0700 (PDT) Received: from localhost.localdomain (mobile-130-126-255-54.near.illinois.edu. [130.126.255.54]) by smtp.gmail.com with ESMTPSA id af79cd13be357-7b1659fd65fsm15510985a.53.2024.10.19.14.17.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 19 Oct 2024 14:18:00 -0700 (PDT) From: Gax-c To: james.smart@broadcom.com, ram.vegesna@broadcom.com, James.Bottomley@HansenPartnership.com, martin.petersen@oracle.com, fthain@linux-m68k.org, quic_jjohnson@quicinc.com, dwagner@suse.de, hare@suse.de Cc: linux-scsi@vger.kernel.org, target-devel@vger.kernel.org, zzjas98@gmail.com, chenyuan0y@gmail.com, Zichen Xie Subject: [PATCH] scsi: elx: efct: Prevent potential integer overflow in efct_efclib_config() Date: Sat, 19 Oct 2024 16:16:38 -0500 Message-Id: <20241019211637.5533-1-zichenxie0106@gmail.com> X-Mailer: git-send-email 2.25.1 Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Zichen Xie This was found by a static analyzer. There may be a potential integer overflow issue in efct_efclib_config(). efc->max_xfer_size is defined as "efc->max_xfer_size" while sli->sge_supported_length and sli_get_max_sgl(&efct->hw.sli) are all "u32". The result of the calculation will be limited to "u32" without correct casting. We recommend adding an extra cast to prevent potential integer overflow. Fixes: 4df84e846624 ("scsi: elx: efct: Driver initialization routines") Signed-off-by: Zichen Xie --- drivers/scsi/elx/efct/efct_driver.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/elx/efct/efct_driver.c b/drivers/scsi/elx/efct/efct_driver.c index 55d2301bfd7d..7fe180037c2d 100644 --- a/drivers/scsi/elx/efct/efct_driver.c +++ b/drivers/scsi/elx/efct/efct_driver.c @@ -109,7 +109,7 @@ efct_efclib_config(struct efct *efct, struct libefc_function_template *tt) efc->log_level = EFC_LOG_LIB; sli = &efct->hw.sli; - efc->max_xfer_size = sli->sge_supported_length * + efc->max_xfer_size = (u64)sli->sge_supported_length * sli_get_max_sgl(&efct->hw.sli); efc->sli = sli; efc->fcfi = efct->hw.fcf_indicator;