From nobody Mon Feb 9 17:07:35 2026 Received: from cstnet.cn (smtp81.cstnet.cn [159.226.251.81]) (using TLSv1.2 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 69CD42BD0B; Sun, 25 Jan 2026 15:02:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.226.251.81 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769353375; cv=none; b=WjWb5WeBy1fjseu8pQzRqJNp6wg8FqNIN/d+sWBBx06vvkzExvPBptcEHRm4R8Q7mpBsoAM/DbBgTz2xDIfSDD9qMtAvAAex7/8X6cvOidZjCoRg9MjsHr5jO5R/xUiM3MF5D2gOJCcY/xFJaatbrdeJIw1Yz40Q9zU0WujkEqU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769353375; c=relaxed/simple; bh=IdTNu+xJ3THNwGdlT/wchKakuV0n8mN7P9/+NvuiGLA=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=gg9/9FohuDivo7SOSZjWkPT/HMTnYtgO+YYDCklwqvelDH71sh/1jGapieH7UhFyJEMhrFmiP0dWaXS60zkuWIqjhiGzyLTs95I/sUIzYIHkqc9jl7JbScqWv7Uvz5f60WhlUdQtW+LULeeWql1YY62iBAt0G1k5PBgPRveP/aM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=isrc.iscas.ac.cn; spf=pass smtp.mailfrom=isrc.iscas.ac.cn; arc=none smtp.client-ip=159.226.251.81 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=isrc.iscas.ac.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=isrc.iscas.ac.cn Received: from localhost.localdomain (unknown [36.112.3.223]) by APP-03 (Coremail) with SMTP id rQCowACnx96VMHZpOFmuBg--.51200S2; Sun, 25 Jan 2026 23:02:46 +0800 (CST) From: Haoxiang Li To: don.brace@microchip.com, James.Bottomley@HansenPartnership.com, martin.petersen@oracle.com Cc: storagedev@microchip.com, linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, Haoxiang Li Subject: [PATCH] scsi: hpsa: add return value check for remap_pci_mem() Date: Sun, 25 Jan 2026 23:02:44 +0800 Message-Id: <20260125150244.2115157-1-lihaoxiang@isrc.iscas.ac.cn> X-Mailer: git-send-email 2.25.1 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 X-CM-TRANSID: rQCowACnx96VMHZpOFmuBg--.51200S2 X-Coremail-Antispam: 1UD129KBjvdXoW7JryxKry3Gr4fuFWrtw15twb_yoW3WFg_W3 yIvwnayrZFyFn2kFsxAw13ZryYvw45Xr409r4v9a4Sk3yrXF15CrWxZrs5Zrn7Gr4rXFyD Jw1qqrWfC3WUCjkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUb48FF20E14v26r4j6ryUM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8w A2z4x0Y4vE2Ix0cI8IcVAFwI0_Jr0_JF4l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Jr0_ Gr1l84ACjcxK6I8E87Iv67AKxVWUJVW8JwA2z4x0Y4vEx4A2jsIEc7CjxVAFwI0_Gr0_Gr 1UM2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI64kE6c02F40Ex7xfMcIj6xII jxv20xvE14v26r1j6r18McIj6I8E87Iv67AKxVW8JVWxJwAm72CE4IkC6x0Yz7v_Jr0_Gr 1lF7xvr2IYc2Ij64vIr41lF7I21c0EjII2zVCS5cI20VAGYxC7MxkF7I0En4kS14v26r12 6r1DMxAIw28IcxkI7VAKI48JMxC20s026xCaFVCjc4AY6r1j6r4UMI8I3I0E5I8CrVAFwI 0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE17CEb7AF67AKxVWUAVWUtwCIc40Y 0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r1j6r1xMIIF0xvE2Ix0cI8IcVCY1x0267AKxV WUJVW8JwCI42IY6xAIw20EY4v20xvaj40_Jr0_JF4lIxAIcVC2z280aVAFwI0_Jr0_Gr1l IxAIcVC2z280aVCY1x0267AKxVW8JVW8JrUvcSsGvfC2KfnxnUUI43ZEXa7VUjJ73PUUUU U== X-CM-SenderInfo: 5olkt0x0ld0ww6lv2u4olvutnvoduhdfq/1tbiBg0SE2l1qXukVQAAs1 Content-Type: text/plain; charset="utf-8" In hpsa_enter_performant_mode(), add return value check for remap_pci_mem() to prevent potential null pointer dereference. Signed-off-by: Haoxiang Li --- drivers/scsi/hpsa.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index 3654b12c5d5a..f3118695f320 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -9323,6 +9323,8 @@ static int hpsa_enter_performant_mode(struct ctlr_inf= o *h, u32 trans_support) cfg_offset + bft2_offset, ARRAY_SIZE(bft2) * sizeof(*h->ioaccel2_bft2_regs)); + if (!h->ioaccel2_bft2_regs) + return -ENODEV; for (i =3D 0; i < ARRAY_SIZE(bft2); i++) writel(bft2[i], &h->ioaccel2_bft2_regs[i]); } --=20 2.25.1