From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Subject: [v2,1/3] dma: imx-sdma: fix NULL pointer de-reference From: Angus Ainslie Message-Id: <20190120023150.17138-2-angus@akkea.ca> Date: Sat, 19 Jan 2019 19:31:48 -0700 Cc: Vinod Koul , dmaengine@vger.kernel.org, NXP Linux Team , Pengutronix Kernel Team , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, "Angus Ainslie (Purism)" List-ID: T24gdGhlIGlteDhtcSBJIGdldCBOVUxMIHBvaW50ZXIgZGUtZGVmZXJlbmNlIGVycm9ycyBpZiB0 aGUgZGV2aWNlCmlzbid0IHBhc3NlZCBpbiBkdXJpbmcgYWxsb2NhdGlvbi4KClNpZ25lZC1vZmYt Ynk6IEFuZ3VzIEFpbnNsaWUgKFB1cmlzbSkgPGFuZ3VzQGFra2VhLmNhPgotLS0KIGRyaXZlcnMv ZG1hL2lteC1zZG1hLmMgfCAxNyArKysrKysrKystLS0tLS0tLQogMSBmaWxlIGNoYW5nZWQsIDkg aW5zZXJ0aW9ucygrKSwgOCBkZWxldGlvbnMoLSkKCmRpZmYgLS1naXQgYS9kcml2ZXJzL2RtYS9p bXgtc2RtYS5jIGIvZHJpdmVycy9kbWEvaW14LXNkbWEuYwppbmRleCA4NjcwOGZiOWJkYTEuLjBi M2E2N2ZmOGU4MiAxMDA2NDQKLS0tIGEvZHJpdmVycy9kbWEvaW14LXNkbWEuYworKysgYi9kcml2 ZXJzL2RtYS9pbXgtc2RtYS5jCkBAIC02NzcsNyArNjc3LDcgQEAgc3RhdGljIGludCBzZG1hX2xv YWRfc2NyaXB0KHN0cnVjdCBzZG1hX2VuZ2luZSAqc2RtYSwgdm9pZCAqYnVmLCBpbnQgc2l6ZSwK IAlpbnQgcmV0OwogCXVuc2lnbmVkIGxvbmcgZmxhZ3M7CiAKLQlidWZfdmlydCA9IGRtYV9hbGxv Y19jb2hlcmVudChOVUxMLCBzaXplLCAmYnVmX3BoeXMsIEdGUF9LRVJORUwpOworCWJ1Zl92aXJ0 ID0gZG1hX2FsbG9jX2NvaGVyZW50KHNkbWEtPmRldiwgc2l6ZSwgJmJ1Zl9waHlzLCBHRlBfS0VS TkVMKTsKIAlpZiAoIWJ1Zl92aXJ0KSB7CiAJCXJldHVybiAtRU5PTUVNOwogCX0KQEAgLTY5Niw3 ICs2OTYsNyBAQCBzdGF0aWMgaW50IHNkbWFfbG9hZF9zY3JpcHQoc3RydWN0IHNkbWFfZW5naW5l ICpzZG1hLCB2b2lkICpidWYsIGludCBzaXplLAogCiAJc3Bpbl91bmxvY2tfaXJxcmVzdG9yZSgm c2RtYS0+Y2hhbm5lbF8wX2xvY2ssIGZsYWdzKTsKIAotCWRtYV9mcmVlX2NvaGVyZW50KE5VTEws IHNpemUsIGJ1Zl92aXJ0LCBidWZfcGh5cyk7CisJZG1hX2ZyZWVfY29oZXJlbnQoc2RtYS0+ZGV2 LCBzaXplLCBidWZfdmlydCwgYnVmX3BoeXMpOwogCiAJcmV0dXJuIHJldDsKIH0KQEAgLTExODIs OCArMTE4Miw4IEBAIHN0YXRpYyBpbnQgc2RtYV9yZXF1ZXN0X2NoYW5uZWwwKHN0cnVjdCBzZG1h X2VuZ2luZSAqc2RtYSkKIHsKIAlpbnQgcmV0ID0gLUVCVVNZOwogCi0Jc2RtYS0+YmQwID0gZG1h X2FsbG9jX2NvaGVyZW50KE5VTEwsIFBBR0VfU0laRSwgJnNkbWEtPmJkMF9waHlzLAotCQkJCSAg ICAgICBHRlBfTk9XQUlUKTsKKwlzZG1hLT5iZDAgPSBkbWFfYWxsb2NfY29oZXJlbnQoc2RtYS0+ ZGV2LCBQQUdFX1NJWkUsICZzZG1hLT5iZDBfcGh5cywKKwkJCQkJR0ZQX05PV0FJVCk7CiAJaWYg KCFzZG1hLT5iZDApIHsKIAkJcmV0ID0gLUVOT01FTTsKIAkJZ290byBvdXQ7CkBAIC0xMjA1LDgg KzEyMDUsOCBAQCBzdGF0aWMgaW50IHNkbWFfYWxsb2NfYmQoc3RydWN0IHNkbWFfZGVzYyAqZGVz YykKIAl1MzIgYmRfc2l6ZSA9IGRlc2MtPm51bV9iZCAqIHNpemVvZihzdHJ1Y3Qgc2RtYV9idWZm ZXJfZGVzY3JpcHRvcik7CiAJaW50IHJldCA9IDA7CiAKLQlkZXNjLT5iZCA9IGRtYV9hbGxvY19j b2hlcmVudChOVUxMLCBiZF9zaXplLCAmZGVzYy0+YmRfcGh5cywKLQkJCQkgICAgICBHRlBfTk9X QUlUKTsKKwlkZXNjLT5iZCA9IGRtYV9hbGxvY19jb2hlcmVudChkZXNjLT5zZG1hYy0+c2RtYS0+ ZGV2LCBiZF9zaXplLAorCQkJJmRlc2MtPmJkX3BoeXMsCUdGUF9OT1dBSVQpOwogCWlmICghZGVz Yy0+YmQpIHsKIAkJcmV0ID0gLUVOT01FTTsKIAkJZ290byBvdXQ7CkBAIC0xMjE5LDcgKzEyMTks OCBAQCBzdGF0aWMgdm9pZCBzZG1hX2ZyZWVfYmQoc3RydWN0IHNkbWFfZGVzYyAqZGVzYykKIHsK IAl1MzIgYmRfc2l6ZSA9IGRlc2MtPm51bV9iZCAqIHNpemVvZihzdHJ1Y3Qgc2RtYV9idWZmZXJf ZGVzY3JpcHRvcik7CiAKLQlkbWFfZnJlZV9jb2hlcmVudChOVUxMLCBiZF9zaXplLCBkZXNjLT5i ZCwgZGVzYy0+YmRfcGh5cyk7CisJZG1hX2ZyZWVfY29oZXJlbnQoZGVzYy0+c2RtYWMtPnNkbWEt PmRldiwgYmRfc2l6ZSwgZGVzYy0+YmQsCisJCQlkZXNjLT5iZF9waHlzKTsKIH0KIAogc3RhdGlj IHZvaWQgc2RtYV9kZXNjX2ZyZWUoc3RydWN0IHZpcnRfZG1hX2Rlc2MgKnZkKQpAQCAtMTg0Miw3 ICsxODQzLDcgQEAgc3RhdGljIGludCBzZG1hX2luaXQoc3RydWN0IHNkbWFfZW5naW5lICpzZG1h KQogCS8qIEJlIHN1cmUgU0RNQSBoYXMgbm90IHN0YXJ0ZWQgeWV0ICovCiAJd3JpdGVsX3JlbGF4 ZWQoMCwgc2RtYS0+cmVncyArIFNETUFfSF9DMFBUUik7CiAKLQlzZG1hLT5jaGFubmVsX2NvbnRy b2wgPSBkbWFfYWxsb2NfY29oZXJlbnQoTlVMTCwKKwlzZG1hLT5jaGFubmVsX2NvbnRyb2wgPSBk bWFfYWxsb2NfY29oZXJlbnQoc2RtYS0+ZGV2LAogCQkJTUFYX0RNQV9DSEFOTkVMUyAqIHNpemVv ZiAoc3RydWN0IHNkbWFfY2hhbm5lbF9jb250cm9sKSArCiAJCQlzaXplb2Yoc3RydWN0IHNkbWFf Y29udGV4dF9kYXRhKSwKIAkJCSZjY2JfcGh5cywgR0ZQX0tFUk5FTCk7Cg== From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A9377C61CE8 for ; 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d=akkea.ca; s=mail; t=1547951522; bh=WUXWccT5PmV9S0juFUFU4MxzFbKyfQ6fspVdbDlV0c4=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Yvw6jjEVw9CKGorYpikfdV+i+9mxGmaZySVufNzzx7KlW/2dW7EImaEkGGGayaWHh LT6ZYPumGZl8iwZ+F8XrPiZaAgZX//rhvtYzOQe4g3f/h/5Sj7Ihy/oFQ/RDm+Cf1N gY7mi+1EzFxNNOsjzMzXYwJ9sbgj8rSJXFaAo9SA= X-Virus-Scanned: Debian amavisd-new at mail.akkea.ca Received: from node.akkea.ca ([127.0.0.1]) by localhost (mail.akkea.ca [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id OD7boVEN262S; Sun, 20 Jan 2019 02:32:01 +0000 (UTC) Received: from localhost.localdomain (198-48-167-13.cpe.pppoe.ca [198.48.167.13]) by node.akkea.ca (Postfix) with ESMTPSA id 4A3134E204D; Sun, 20 Jan 2019 02:32:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=akkea.ca; s=mail; t=1547951521; bh=WUXWccT5PmV9S0juFUFU4MxzFbKyfQ6fspVdbDlV0c4=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=cEBqiWlmJ6ijJB8m6s6k62zxrQ12X6viLCx94RtTPlPWTw8J/7jCjlPrH7FFK/vpM sL3AcBVrQLZAN2oH+ZA7pkNRrBiD580CLjSxa6gpQfdsC1A2g0wOC9VJPYs06Ck02i cXrw4qXAgTscnxS2DeZK0o8LAtki2QpZOFcfkpOI= From: "Angus Ainslie (Purism)" Cc: Vinod Koul , dmaengine@vger.kernel.org, NXP Linux Team , Pengutronix Kernel Team , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, "Angus Ainslie (Purism)" Subject: [PATCH v2 1/3] dma: imx-sdma: fix NULL pointer de-reference Date: Sat, 19 Jan 2019 19:31:48 -0700 Message-Id: <20190120023150.17138-2-angus@akkea.ca> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190120023150.17138-1-angus@akkea.ca> References: <20190120023150.17138-1-angus@akkea.ca> To: unlisted-recipients:; (no To-header on input) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On the imx8mq I get NULL pointer de-deference errors if the device isn't passed in during allocation. Signed-off-by: Angus Ainslie (Purism) --- drivers/dma/imx-sdma.c | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c index 86708fb9bda1..0b3a67ff8e82 100644 --- a/drivers/dma/imx-sdma.c +++ b/drivers/dma/imx-sdma.c @@ -677,7 +677,7 @@ static int sdma_load_script(struct sdma_engine *sdma, void *buf, int size, int ret; unsigned long flags; - buf_virt = dma_alloc_coherent(NULL, size, &buf_phys, GFP_KERNEL); + buf_virt = dma_alloc_coherent(sdma->dev, size, &buf_phys, GFP_KERNEL); if (!buf_virt) { return -ENOMEM; } @@ -696,7 +696,7 @@ static int sdma_load_script(struct sdma_engine *sdma, void *buf, int size, spin_unlock_irqrestore(&sdma->channel_0_lock, flags); - dma_free_coherent(NULL, size, buf_virt, buf_phys); + dma_free_coherent(sdma->dev, size, buf_virt, buf_phys); return ret; } @@ -1182,8 +1182,8 @@ static int sdma_request_channel0(struct sdma_engine *sdma) { int ret = -EBUSY; - sdma->bd0 = dma_alloc_coherent(NULL, PAGE_SIZE, &sdma->bd0_phys, - GFP_NOWAIT); + sdma->bd0 = dma_alloc_coherent(sdma->dev, PAGE_SIZE, &sdma->bd0_phys, + GFP_NOWAIT); if (!sdma->bd0) { ret = -ENOMEM; goto out; @@ -1205,8 +1205,8 @@ static int sdma_alloc_bd(struct sdma_desc *desc) u32 bd_size = desc->num_bd * sizeof(struct sdma_buffer_descriptor); int ret = 0; - desc->bd = dma_alloc_coherent(NULL, bd_size, &desc->bd_phys, - GFP_NOWAIT); + desc->bd = dma_alloc_coherent(desc->sdmac->sdma->dev, bd_size, + &desc->bd_phys, GFP_NOWAIT); if (!desc->bd) { ret = -ENOMEM; goto out; @@ -1219,7 +1219,8 @@ static void sdma_free_bd(struct sdma_desc *desc) { u32 bd_size = desc->num_bd * sizeof(struct sdma_buffer_descriptor); - dma_free_coherent(NULL, bd_size, desc->bd, desc->bd_phys); + dma_free_coherent(desc->sdmac->sdma->dev, bd_size, desc->bd, + desc->bd_phys); } static void sdma_desc_free(struct virt_dma_desc *vd) @@ -1842,7 +1843,7 @@ static int sdma_init(struct sdma_engine *sdma) /* Be sure SDMA has not started yet */ writel_relaxed(0, sdma->regs + SDMA_H_C0PTR); - sdma->channel_control = dma_alloc_coherent(NULL, + sdma->channel_control = dma_alloc_coherent(sdma->dev, MAX_DMA_CHANNELS * sizeof (struct sdma_channel_control) + sizeof(struct sdma_context_data), &ccb_phys, GFP_KERNEL); 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h=From:To:Cc:Subject:Date:In-Reply-To:References; b=Yvw6jjEVw9CKGorYpikfdV+i+9mxGmaZySVufNzzx7KlW/2dW7EImaEkGGGayaWHh LT6ZYPumGZl8iwZ+F8XrPiZaAgZX//rhvtYzOQe4g3f/h/5Sj7Ihy/oFQ/RDm+Cf1N gY7mi+1EzFxNNOsjzMzXYwJ9sbgj8rSJXFaAo9SA= X-Virus-Scanned: Debian amavisd-new at mail.akkea.ca Received: from node.akkea.ca ([127.0.0.1]) by localhost (mail.akkea.ca [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id OD7boVEN262S; Sun, 20 Jan 2019 02:32:01 +0000 (UTC) Received: from localhost.localdomain (198-48-167-13.cpe.pppoe.ca [198.48.167.13]) by node.akkea.ca (Postfix) with ESMTPSA id 4A3134E204D; Sun, 20 Jan 2019 02:32:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=akkea.ca; s=mail; t=1547951521; bh=WUXWccT5PmV9S0juFUFU4MxzFbKyfQ6fspVdbDlV0c4=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=cEBqiWlmJ6ijJB8m6s6k62zxrQ12X6viLCx94RtTPlPWTw8J/7jCjlPrH7FFK/vpM sL3AcBVrQLZAN2oH+ZA7pkNRrBiD580CLjSxa6gpQfdsC1A2g0wOC9VJPYs06Ck02i cXrw4qXAgTscnxS2DeZK0o8LAtki2QpZOFcfkpOI= From: "Angus Ainslie (Purism)" To: Subject: [PATCH v2 1/3] dma: imx-sdma: fix NULL pointer de-reference Date: Sat, 19 Jan 2019 19:31:48 -0700 Message-Id: <20190120023150.17138-2-angus@akkea.ca> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190120023150.17138-1-angus@akkea.ca> References: <20190120023150.17138-1-angus@akkea.ca> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190119_183203_290611_32BE65FD X-CRM114-Status: GOOD ( 10.60 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "Angus Ainslie \(Purism\)" , linux-kernel@vger.kernel.org, Vinod Koul , NXP Linux Team , Pengutronix Kernel Team , dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On the imx8mq I get NULL pointer de-deference errors if the device isn't passed in during allocation. Signed-off-by: Angus Ainslie (Purism) --- drivers/dma/imx-sdma.c | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c index 86708fb9bda1..0b3a67ff8e82 100644 --- a/drivers/dma/imx-sdma.c +++ b/drivers/dma/imx-sdma.c @@ -677,7 +677,7 @@ static int sdma_load_script(struct sdma_engine *sdma, void *buf, int size, int ret; unsigned long flags; - buf_virt = dma_alloc_coherent(NULL, size, &buf_phys, GFP_KERNEL); + buf_virt = dma_alloc_coherent(sdma->dev, size, &buf_phys, GFP_KERNEL); if (!buf_virt) { return -ENOMEM; } @@ -696,7 +696,7 @@ static int sdma_load_script(struct sdma_engine *sdma, void *buf, int size, spin_unlock_irqrestore(&sdma->channel_0_lock, flags); - dma_free_coherent(NULL, size, buf_virt, buf_phys); + dma_free_coherent(sdma->dev, size, buf_virt, buf_phys); return ret; } @@ -1182,8 +1182,8 @@ static int sdma_request_channel0(struct sdma_engine *sdma) { int ret = -EBUSY; - sdma->bd0 = dma_alloc_coherent(NULL, PAGE_SIZE, &sdma->bd0_phys, - GFP_NOWAIT); + sdma->bd0 = dma_alloc_coherent(sdma->dev, PAGE_SIZE, &sdma->bd0_phys, + GFP_NOWAIT); if (!sdma->bd0) { ret = -ENOMEM; goto out; @@ -1205,8 +1205,8 @@ static int sdma_alloc_bd(struct sdma_desc *desc) u32 bd_size = desc->num_bd * sizeof(struct sdma_buffer_descriptor); int ret = 0; - desc->bd = dma_alloc_coherent(NULL, bd_size, &desc->bd_phys, - GFP_NOWAIT); + desc->bd = dma_alloc_coherent(desc->sdmac->sdma->dev, bd_size, + &desc->bd_phys, GFP_NOWAIT); if (!desc->bd) { ret = -ENOMEM; goto out; @@ -1219,7 +1219,8 @@ static void sdma_free_bd(struct sdma_desc *desc) { u32 bd_size = desc->num_bd * sizeof(struct sdma_buffer_descriptor); - dma_free_coherent(NULL, bd_size, desc->bd, desc->bd_phys); + dma_free_coherent(desc->sdmac->sdma->dev, bd_size, desc->bd, + desc->bd_phys); } static void sdma_desc_free(struct virt_dma_desc *vd) @@ -1842,7 +1843,7 @@ static int sdma_init(struct sdma_engine *sdma) /* Be sure SDMA has not started yet */ writel_relaxed(0, sdma->regs + SDMA_H_C0PTR); - sdma->channel_control = dma_alloc_coherent(NULL, + sdma->channel_control = dma_alloc_coherent(sdma->dev, MAX_DMA_CHANNELS * sizeof (struct sdma_channel_control) + sizeof(struct sdma_context_data), &ccb_phys, GFP_KERNEL); -- 2.17.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel