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([218.147.112.168]) by smtp.gmail.com with ESMTPSA id h7-20020a170902b94700b001bc21222e34sm7120090pls.285.2023.09.17.18.02.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 17 Sep 2023 18:02:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1694998967; x=1695603767; darn=nongnu.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=qfZjrz+V+vXxmF969ZA46zPhPvZBIZf13lLxUH9oy8s=; b=FUukY/kc8uZRZ8Tps3dIaLLtfhkMOXjZmQUfQwPkcGIbOKl34cFlNOllNx6JwAx4cR zgP+CyvNKH1bPlkdj6bTrAZm5vYy07evpQKvxRD00a9dqDLDJhOrWljsI66ksg5G02pJ DBJmjk19hNNJpdiG6tSaco1GRgYnc89/zZmoXfGjw6NNZzUrGOvryngBeBPWjThpNY21 HogtImTeT0twmVSehQcmf6R1jt3YtWN1tZaSj6YekvgzeGSOMFFYJaX+TBYOFUoeSRFK s5a4QDCykw4YRcjM4OL2EQ4DbX4VwJY6csJF2jOb55+4PV1ljyVYkUXCojf69koXqDwY c0CQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1694998967; x=1695603767; 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=qfZjrz+V+vXxmF969ZA46zPhPvZBIZf13lLxUH9oy8s=; b=AEjqAC5jLMYSgUuNWHGtMmBOXnx9hMrS+JM2j/0KBAHdquA9nHtlqgAYCydPQoj/4t /FzpTDloIj/MRsJthTQ5ltxKCJOWIjYY0g0mnkG9ZYj9p7K65/QVmqPh2C4/wjNPb3oD It5eZ357RzZ+urk0qo+AsTy/eaOMQAIhGpNN8MqdPbBdNWgjBquv0xJ842jFjwC5y86I c8HQdcgBIt2ixfgsNVBUBGp6ovVjJeQ6aGyxYq609EdkLHM8wiJ4ZIU2QZcMx/yrY1C2 KitKY+/8SuBX3r2feuuoELZnTMA2lZSMrn8wbYRZh8sur+vL8U5tenWQdfr1/GNNTNPP 7I9A== X-Gm-Message-State: AOJu0YzDDuti37BvfB8w7qjwMdh6r85qClCCYqrAUrpO0WTULVj/ZKUO b8KieabFHiSpXHRJFUMGlpYexuGEdaqYZA== X-Google-Smtp-Source: AGHT+IE/iHJW0I6nMxIHHYoIO4gQpMu6xrXuwfHpgbkUaORa4XY7ENjM+scYn/yMKpaDHwDnin0zRA== X-Received: by 2002:a17:903:11c6:b0:1c3:9aaf:97be with SMTP id q6-20020a17090311c600b001c39aaf97bemr9324081plh.56.1694998967187; Sun, 17 Sep 2023 18:02:47 -0700 (PDT) From: Jeuk Kim To: qemu-devel@nongnu.org Cc: jeuk20.kim@samsung.com, lvivier@redhat.com, pbonzini@redhat.com, qemu-block@nongnu.org, stefanha@redhat.com, thuth@redhat.com, peter.maydell@linaro.org Subject: [PATCH] hw/ufs: Fix code coverity issues Date: Mon, 18 Sep 2023 10:02:36 +0900 Message-Id: <16b78677529e4af207baaac3139aed50cc6aa7cf.1694998332.git.jeuk20.kim@gmail.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::62b; envelope-from=jeuk20.kim@gmail.com; helo=mail-pl1-x62b.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @gmail.com) X-ZM-MESSAGEID: 1694998998986100001 Content-Type: text/plain; charset="utf-8" From: Jeuk Kim Fixed four ufs-related coverity issues. The coverity issues and fixes are as follows 1. CID 1519042: Security issue with the rand() function Changed to use a fixed value (0xab) instead of rand() as the value for testing 2. CID 1519043: Dereference after null check Removed useless (redundant) null checks 3. CID 1519050: Out-of-bounds access issue Fix to pass an array type variable to find_first_bit and find_next_bit using DECLARE_BITMAP() 4. CID 1519051: Out-of-bounds read issue Fix incorrect range check for lun Fix coverity CID: 1519042 1519043 1519050 1519051 Signed-off-by: Jeuk Kim --- hw/ufs/lu.c | 16 +++++++--------- hw/ufs/ufs.c | 10 +++++----- tests/qtest/ufs-test.c | 2 +- 3 files changed, 13 insertions(+), 15 deletions(-) diff --git a/hw/ufs/lu.c b/hw/ufs/lu.c index e1c46bddb1..13b5e37b53 100644 --- a/hw/ufs/lu.c +++ b/hw/ufs/lu.c @@ -1345,13 +1345,12 @@ static void ufs_lu_realize(SCSIDevice *dev, Error *= *errp) return; } =20 - if (lu->qdev.conf.blk) { - ctx =3D blk_get_aio_context(lu->qdev.conf.blk); - aio_context_acquire(ctx); - if (!blkconf_blocksizes(&lu->qdev.conf, errp)) { - goto out; - } + ctx =3D blk_get_aio_context(lu->qdev.conf.blk); + aio_context_acquire(ctx); + if (!blkconf_blocksizes(&lu->qdev.conf, errp)) { + goto out; } + lu->qdev.blocksize =3D UFS_BLOCK_SIZE; blk_get_geometry(lu->qdev.conf.blk, &nb_sectors); nb_blocks =3D nb_sectors / (lu->qdev.blocksize / BDRV_SECTOR_SIZE); @@ -1367,10 +1366,9 @@ static void ufs_lu_realize(SCSIDevice *dev, Error **= errp) } =20 ufs_lu_brdv_init(lu, errp); + out: - if (ctx) { - aio_context_release(ctx); - } + aio_context_release(ctx); } =20 static void ufs_lu_unrealize(SCSIDevice *dev) diff --git a/hw/ufs/ufs.c b/hw/ufs/ufs.c index 0ecedb9aed..b73eb3deaf 100644 --- a/hw/ufs/ufs.c +++ b/hw/ufs/ufs.c @@ -258,7 +258,7 @@ static void ufs_irq_check(UfsHc *u) =20 static void ufs_process_db(UfsHc *u, uint32_t val) { - unsigned long doorbell; + DECLARE_BITMAP(doorbell, UFS_MAX_NUTRS); uint32_t slot; uint32_t nutrs =3D u->params.nutrs; UfsRequest *req; @@ -268,8 +268,8 @@ static void ufs_process_db(UfsHc *u, uint32_t val) return; } =20 - doorbell =3D val; - slot =3D find_first_bit(&doorbell, nutrs); + memcpy(doorbell, &val, sizeof(val)); + slot =3D find_first_bit(doorbell, nutrs); =20 while (slot < nutrs) { req =3D &u->req_list[slot]; @@ -285,7 +285,7 @@ static void ufs_process_db(UfsHc *u, uint32_t val) =20 trace_ufs_process_db(slot); req->state =3D UFS_REQUEST_READY; - slot =3D find_next_bit(&doorbell, nutrs, slot + 1); + slot =3D find_next_bit(doorbell, nutrs, slot + 1); } =20 qemu_bh_schedule(u->doorbell_bh); @@ -838,7 +838,7 @@ static QueryRespCode ufs_read_unit_desc(UfsRequest *req) uint8_t lun =3D req->req_upiu.qr.index; =20 if (lun !=3D UFS_UPIU_RPMB_WLUN && - (lun > UFS_MAX_LUS || u->lus[lun] =3D=3D NULL)) { + (lun >=3D UFS_MAX_LUS || u->lus[lun] =3D=3D NULL)) { trace_ufs_err_query_invalid_index(req->req_upiu.qr.opcode, lun); return UFS_QUERY_RESULT_INVALID_INDEX; } diff --git a/tests/qtest/ufs-test.c b/tests/qtest/ufs-test.c index ed3dbca154..15d467630c 100644 --- a/tests/qtest/ufs-test.c +++ b/tests/qtest/ufs-test.c @@ -497,7 +497,7 @@ static void ufstest_read_write(void *obj, void *data, Q= GuestAllocator *alloc) g_assert_cmpuint(block_size, =3D=3D, 4096); =20 /* Write data */ - memset(write_buf, rand() % 255 + 1, block_size); + memset(write_buf, 0xab, block_size); ufs_send_scsi_command(ufs, 0, 1, write_cdb, write_buf, block_size, NUL= L, 0, &utrd, &rsp_upiu); g_assert_cmpuint(le32_to_cpu(utrd.header.dword_2), =3D=3D, UFS_OCS_SUC= CESS); --=20 2.34.1