From mboxrd@z Thu Jan 1 00:00:00 1970 From: Abhishek Sahu Subject: [PATCH v4 08/15] mtd: rawnand: qcom: fix null pointer access for erased page detection Date: Wed, 20 Jun 2018 12:57:35 +0530 Message-ID: <1529479662-4026-9-git-send-email-absahu@codeaurora.org> References: <1529479662-4026-1-git-send-email-absahu@codeaurora.org> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <1529479662-4026-1-git-send-email-absahu@codeaurora.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-mtd" Errors-To: linux-mtd-bounces+gldm-linux-mtd-36=gmane.org@lists.infradead.org To: Boris Brezillon , Miquel Raynal Cc: Archit Taneja , linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, Marek Vasut , Abhishek Sahu , linux-mtd@lists.infradead.org, Richard Weinberger , Andy Gross , Brian Norris , David Woodhouse List-Id: linux-arm-msm@vger.kernel.org cGFyc2VfcmVhZF9lcnJvcnMgY2FuIGJlIGNhbGxlZCB3aXRoIG9ubHkgb29iX2J1ZiBpbiB3aGlj aCBjYXNlCmRhdGFfYnVmIHdpbGwgYmUgTlVMTC4gIElmIGRhdGFfYnVmIGlzIE5VTEwsIHRoZW4g ZG9u4oCZdAp0cmVhdCB0aGlzIHBhZ2UgYXMgY29tcGxldGVseSBlcmFzZWQgaW4gY2FzZSBvZiBF Q0MgdW5jb3JyZWN0YWJsZQplcnJvciBmb3IgUlMgRUNDLiBGb3IgQkNIIEVDQywgdGhlIGNvbnRy b2xsZXIgaXRzZWxmIHRlbGxzCnJlZ2FyZGluZyBlcmFzZWQgcGFnZSBpbiBzdGF0dXMgcmVnaXN0 ZXIuCgpBY2tlZC1ieTogTWlxdWVsIFJheW5hbCA8bWlxdWVsLnJheW5hbEBib290bGluLmNvbT4K U2lnbmVkLW9mZi1ieTogQWJoaXNoZWsgU2FodSA8YWJzYWh1QGNvZGVhdXJvcmEub3JnPgotLS0K KiBDaGFuZ2VzIGZyb20gdjM6CiAgTk9ORQoKKiBDaGFuZ2VzIGZyb20gdjI6CiAgTk9ORQoKKiBD aGFuZ2VzIGZyb20gdjE6CiAgMS4gQWRkZWQgbW9yZSBkZXRhaWwgaW4gY29tbWl0IG1lc3NhZ2UK ICAyLiBBZGRlZCBjb21tZW50IGJlZm9yZSBlYWNoIGlmL2Vsc2UKCiBkcml2ZXJzL210ZC9uYW5k L3Jhdy9xY29tX25hbmRjLmMgfCAxOCArKysrKysrKysrKysrKystLS0KIDEgZmlsZSBjaGFuZ2Vk LCAxNSBpbnNlcnRpb25zKCspLCAzIGRlbGV0aW9ucygtKQoKZGlmZiAtLWdpdCBhL2RyaXZlcnMv bXRkL25hbmQvcmF3L3Fjb21fbmFuZGMuYyBiL2RyaXZlcnMvbXRkL25hbmQvcmF3L3Fjb21fbmFu ZGMuYwppbmRleCAwZDkzMWQ1Li5hODMxZjljIDEwMDY0NAotLS0gYS9kcml2ZXJzL210ZC9uYW5k L3Jhdy9xY29tX25hbmRjLmMKKysrIGIvZHJpdmVycy9tdGQvbmFuZC9yYXcvcWNvbV9uYW5kYy5j CkBAIC0xNjExLDEzICsxNjExLDI0IEBAIHN0YXRpYyBpbnQgcGFyc2VfcmVhZF9lcnJvcnMoc3Ry dWN0IHFjb21fbmFuZF9ob3N0ICpob3N0LCB1OCAqZGF0YV9idWYsCiAJCQlpbnQgcmV0LCBlY2Ns ZW4sIGV4dHJhb29ibGVuOwogCQkJdm9pZCAqZWNjYnVmOwogCi0JCQkvKiBpZ25vcmUgZXJhc2Vk IGNvZGV3b3JkIGVycm9ycyAqLworCQkJLyoKKwkJCSAqIEZvciBCQ0ggRUNDLCBpZ25vcmUgZXJh c2VkIGNvZGV3b3JkIGVycm9ycywgaWYKKwkJCSAqIEVSQVNFRF9DVyBiaXRzIGFyZSBzZXQuCisJ CQkgKi8KIAkJCWlmIChob3N0LT5iY2hfZW5hYmxlZCkgewogCQkJCWVyYXNlZCA9IChlcmFzZWRf Y3cgJiBFUkFTRURfQ1cpID09IEVSQVNFRF9DVyA/CiAJCQkJCSB0cnVlIDogZmFsc2U7Ci0JCQl9 IGVsc2UgeworCQkJLyoKKwkJCSAqIEZvciBSUyBFQ0MsIEhXIHJlcG9ydHMgdGhlIGVyYXNlZCBD VyBieSBwbGFjaW5nCisJCQkgKiBzcGVjaWFsIGNoYXJhY3RlcnMgYXQgY2VydGFpbiBvZmZzZXRz IGluIHRoZSBidWZmZXIuCisJCQkgKiBUaGVzZSBzcGVjaWFsIGNoYXJhY3RlcnMgd2lsbCBiZSB2 YWxpZCBvbmx5IGlmCisJCQkgKiBjb21wbGV0ZSBwYWdlIGlzIHJlYWQgaS5lLiBkYXRhX2J1ZiBp cyBub3QgTlVMTC4KKwkJCSAqLworCQkJfSBlbHNlIGlmIChkYXRhX2J1ZikgewogCQkJCWVyYXNl ZCA9IGVyYXNlZF9jaHVua19jaGVja19hbmRfZml4dXAoZGF0YV9idWYsCiAJCQkJCQkJCSAgICAg IGRhdGFfbGVuKTsKKwkJCX0gZWxzZSB7CisJCQkJZXJhc2VkID0gZmFsc2U7CiAJCQl9CiAKIAkJ CWlmIChlcmFzZWQpIHsKQEAgLTE2NjUsNyArMTY3Niw4IEBAIHN0YXRpYyBpbnQgcGFyc2VfcmVh ZF9lcnJvcnMoc3RydWN0IHFjb21fbmFuZF9ob3N0ICpob3N0LCB1OCAqZGF0YV9idWYsCiAJCQlt YXhfYml0ZmxpcHMgPSBtYXgobWF4X2JpdGZsaXBzLCBzdGF0KTsKIAkJfQogCi0JCWRhdGFfYnVm ICs9IGRhdGFfbGVuOworCQlpZiAoZGF0YV9idWYpCisJCQlkYXRhX2J1ZiArPSBkYXRhX2xlbjsK IAkJaWYgKG9vYl9idWYpCiAJCQlvb2JfYnVmICs9IG9vYl9sZW4gKyBlY2MtPmJ5dGVzOwogCX0K LS0gClFVQUxDT01NIElORElBLCBvbiBiZWhhbGYgb2YgUXVhbGNvbW0gSW5ub3ZhdGlvbiBDZW50 ZXIsIEluYy4KaXMgYSBtZW1iZXIgb2YgQ29kZSBBdXJvcmEgRm9ydW0sIGhvc3RlZCBieSBUaGUg TGludXggRm91bmRhdGlvbgoKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fXwpMaW51eCBNVEQgZGlzY3Vzc2lvbiBtYWlsaW5nIGxpc3QKaHR0cDov L2xpc3RzLmluZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5mby9saW51eC1tdGQvCg==