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Wed, 08 Sep 2021 01:05:40 -0700 (PDT) MIME-Version: 1.0 References: <0000000000006dd93205cad885e5@google.com> In-Reply-To: From: Miklos Szeredi Date: Wed, 8 Sep 2021 10:05:29 +0200 Message-ID: Subject: Re: [syzbot] WARNING in ovl_create_real To: syzbot Cc: linux-kernel@vger.kernel.org, overlayfs , syzkaller-bugs Content-Type: multipart/mixed; boundary="0000000000001de82c05cb775997" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --0000000000001de82c05cb775997 Content-Type: text/plain; charset="UTF-8" #syz test git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master --0000000000001de82c05cb775997 Content-Type: text/x-patch; charset="US-ASCII"; name="ovl-fix-warning-in-ovl_create_real.patch" Content-Disposition: attachment; filename="ovl-fix-warning-in-ovl_create_real.patch" Content-Transfer-Encoding: base64 Content-ID: X-Attachment-Id: f_ktb7varr0 ZGlmZiAtLWdpdCBhL2ZzL292ZXJsYXlmcy9kaXIuYyBiL2ZzL292ZXJsYXlmcy9kaXIuYwppbmRl eCAxZmVmYjJiODk2MGUuLjJmNDEyNTM5OTg5NiAxMDA2NDQKLS0tIGEvZnMvb3ZlcmxheWZzL2Rp ci5jCisrKyBiL2ZzL292ZXJsYXlmcy9kaXIuYwpAQCAtMTM3LDggKzEzNyw3IEBAIGludCBvdmxf Y2xlYW51cF9hbmRfd2hpdGVvdXQoc3RydWN0IG92bF9mcyAqb2ZzLCBzdHJ1Y3QgaW5vZGUgKmRp ciwKIAlnb3RvIG91dDsKIH0KIAotc3RhdGljIGludCBvdmxfbWtkaXJfcmVhbChzdHJ1Y3QgaW5v ZGUgKmRpciwgc3RydWN0IGRlbnRyeSAqKm5ld2RlbnRyeSwKLQkJCSAgdW1vZGVfdCBtb2RlKQor aW50IG92bF9ta2Rpcl9yZWFsKHN0cnVjdCBpbm9kZSAqZGlyLCBzdHJ1Y3QgZGVudHJ5ICoqbmV3 ZGVudHJ5LCB1bW9kZV90IG1vZGUpCiB7CiAJaW50IGVycjsKIAlzdHJ1Y3QgZGVudHJ5ICpkLCAq ZGVudHJ5ID0gKm5ld2RlbnRyeTsKZGlmZiAtLWdpdCBhL2ZzL292ZXJsYXlmcy9vdmVybGF5ZnMu aCBiL2ZzL292ZXJsYXlmcy9vdmVybGF5ZnMuaAppbmRleCAzODk0ZjMzNDc5NTUuLjJjZDU3NDFj ODczYiAxMDA2NDQKLS0tIGEvZnMvb3ZlcmxheWZzL292ZXJsYXlmcy5oCisrKyBiL2ZzL292ZXJs YXlmcy9vdmVybGF5ZnMuaApAQCAtNTcwLDYgKzU3MCw3IEBAIHN0cnVjdCBvdmxfY2F0dHIgewog CiAjZGVmaW5lIE9WTF9DQVRUUihtKSAoJihzdHJ1Y3Qgb3ZsX2NhdHRyKSB7IC5tb2RlID0gKG0p IH0pCiAKK2ludCBvdmxfbWtkaXJfcmVhbChzdHJ1Y3QgaW5vZGUgKmRpciwgc3RydWN0IGRlbnRy eSAqKm5ld2RlbnRyeSwgdW1vZGVfdCBtb2RlKTsKIHN0cnVjdCBkZW50cnkgKm92bF9jcmVhdGVf cmVhbChzdHJ1Y3QgaW5vZGUgKmRpciwgc3RydWN0IGRlbnRyeSAqbmV3ZGVudHJ5LAogCQkJICAg ICAgIHN0cnVjdCBvdmxfY2F0dHIgKmF0dHIpOwogaW50IG92bF9jbGVhbnVwKHN0cnVjdCBpbm9k ZSAqZGlyLCBzdHJ1Y3QgZGVudHJ5ICpkZW50cnkpOwpkaWZmIC0tZ2l0IGEvZnMvb3ZlcmxheWZz L3N1cGVyLmMgYi9mcy9vdmVybGF5ZnMvc3VwZXIuYwppbmRleCAxNzhkYWE1ZTgyYzkuLjI2NTE4 MWMxMTBhZSAxMDA2NDQKLS0tIGEvZnMvb3ZlcmxheWZzL3N1cGVyLmMKKysrIGIvZnMvb3Zlcmxh eWZzL3N1cGVyLmMKQEAgLTc4NywxMCArNzg3LDE0IEBAIHN0YXRpYyBzdHJ1Y3QgZGVudHJ5ICpv dmxfd29ya2Rpcl9jcmVhdGUoc3RydWN0IG92bF9mcyAqb2ZzLAogCQkJZ290byByZXRyeTsKIAkJ fQogCi0JCXdvcmsgPSBvdmxfY3JlYXRlX3JlYWwoZGlyLCB3b3JrLCBPVkxfQ0FUVFIoYXR0ci5p YV9tb2RlKSk7Ci0JCWVyciA9IFBUUl9FUlIod29yayk7Ci0JCWlmIChJU19FUlIod29yaykpCi0J CQlnb3RvIG91dF9lcnI7CisJCWVyciA9IG92bF9ta2Rpcl9yZWFsKGRpciwgJndvcmssIGF0dHIu aWFfbW9kZSk7CisJCWlmIChlcnIpCisJCQlnb3RvIG91dF9kcHV0OworCisJCS8qIFdlaXJkIGZp bGVzeXN0ZW0gcmV0dXJuaW5nIHdpdGggaGFzaGVkIG5lZ2F0aXZlIChrZXJuZnMpPyAqLworCQll cnIgPSAtRUlOVkFMOworCQlpZiAoZF9yZWFsbHlfaXNfbmVnYXRpdmUod29yaykpCisJCQlnb3Rv IG91dF9kcHV0OwogCiAJCS8qCiAJCSAqIFRyeSB0byByZW1vdmUgUE9TSVggQUNMIHhhdHRycyBm cm9tIHdvcmtkaXIuICBXZSBhcmUgZ29vZCBpZjoK --0000000000001de82c05cb775997--