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: [v3] usbip: vhci_sysfs: fix potential Spectre v1 From: "Gustavo A. R. Silva" Message-Id: <20180519011342.GA13962@embeddedgus> Date: Fri, 18 May 2018 20:13:42 -0500 To: Valentina Manea , Shuah Khan , Greg Kroah-Hartman Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, "Gustavo A. R. Silva" List-ID: cGRldl9uciBhbmQgcmhwb3J0IGNhbiBiZSBjb250cm9sbGVkIGJ5IHVzZXItc3BhY2UsIGhlbmNl IGxlYWRpbmcgdG8KYSBwb3RlbnRpYWwgZXhwbG9pdGF0aW9uIG9mIHRoZSBTcGVjdHJlIHZhcmlh bnQgMSB2dWxuZXJhYmlsaXR5LgoKVGhpcyBpc3N1ZSB3YXMgZGV0ZWN0ZWQgd2l0aCB0aGUgaGVs cCBvZiBTbWF0Y2g6CmRyaXZlcnMvdXNiL3VzYmlwL3ZoY2lfc3lzZnMuYzoyMzggZGV0YWNoX3N0 b3JlKCkgd2FybjogcG90ZW50aWFsIHNwZWN0cmUgaXNzdWUgJ3ZoY2lzJwpkcml2ZXJzL3VzYi91 c2JpcC92aGNpX3N5c2ZzLmM6MzI4IGF0dGFjaF9zdG9yZSgpIHdhcm46IHBvdGVudGlhbCBzcGVj dHJlIGlzc3VlICd2aGNpcycKZHJpdmVycy91c2IvdXNiaXAvdmhjaV9zeXNmcy5jOjMzOCBhdHRh Y2hfc3RvcmUoKSB3YXJuOiBwb3RlbnRpYWwgc3BlY3RyZSBpc3N1ZSAndmhjaS0+dmhjaV9oY2Rf c3MtPnZkZXYnCmRyaXZlcnMvdXNiL3VzYmlwL3ZoY2lfc3lzZnMuYzozNDAgYXR0YWNoX3N0b3Jl KCkgd2FybjogcG90ZW50aWFsIHNwZWN0cmUgaXNzdWUgJ3ZoY2ktPnZoY2lfaGNkX2hzLT52ZGV2 JwoKRml4IHRoaXMgYnkgc2FuaXRpemluZyBwZGV2X25yIGFuZCByaHBvcnQgYmVmb3JlIHVzaW5n IHRoZW0gdG8gaW5kZXgKdmhjaXMgYW5kIHZoY2ktPnZoY2lfaGNkX3NzLT52ZGV2IHJlc3BlY3Rp dmVseS4KCk5vdGljZSB0aGF0IGdpdmVuIHRoYXQgc3BlY3VsYXRpb24gd2luZG93cyBhcmUgbGFy Z2UsIHRoZSBwb2xpY3kgaXMKdG8ga2lsbCB0aGUgc3BlY3VsYXRpb24gb24gdGhlIGZpcnN0IGxv YWQgYW5kIG5vdCB3b3JyeSBpZiBpdCBjYW4gYmUKY29tcGxldGVkIHdpdGggYSBkZXBlbmRlbnQg bG9hZC9zdG9yZSBbMV0uCgpbMV0gaHR0cHM6Ly9tYXJjLmluZm8vP2w9bGludXgta2VybmVsJm09 MTUyNDQ5MTMxMTE0Nzc4Jnc9MgoKQ2M6IHN0YWJsZUB2Z2VyLmtlcm5lbC5vcmcKU2lnbmVkLW9m Zi1ieTogR3VzdGF2byBBLiBSLiBTaWx2YSA8Z3VzdGF2b0BlbWJlZGRlZG9yLmNvbT4KLS0tCkNo YW5nZXMgaW4gdjM6CiAtIFBhc3MgdGhlIGFkZHJlc3NlcyBvZiBwZGV2X25yIGFuZCByaHBvcnQg aW50byB2YWxpZF9wb3J0IGFuZAogICB2YWxpZF9hcmdzLgoKQ2hhbmdlcyBpbiB2MjoKIC0gUGxh Y2UgdGhlIGJhcnJpZXJzIGludG8gdmFsaWRfcG9ydC4KCiBkcml2ZXJzL3VzYi91c2JpcC92aGNp X3N5c2ZzLmMgfCAyNCArKysrKysrKysrKysrKysrLS0tLS0tLS0KIDEgZmlsZSBjaGFuZ2VkLCAx NiBpbnNlcnRpb25zKCspLCA4IGRlbGV0aW9ucygtKQoKZGlmZiAtLWdpdCBhL2RyaXZlcnMvdXNi L3VzYmlwL3ZoY2lfc3lzZnMuYyBiL2RyaXZlcnMvdXNiL3VzYmlwL3ZoY2lfc3lzZnMuYwppbmRl eCA0ODgwODM4Li5iZTM3YWVjIDEwMDY0NAotLS0gYS9kcml2ZXJzL3VzYi91c2JpcC92aGNpX3N5 c2ZzLmMKKysrIGIvZHJpdmVycy91c2IvdXNiaXAvdmhjaV9zeXNmcy5jCkBAIC0xMCw2ICsxMCw5 IEBACiAjaW5jbHVkZSA8bGludXgvcGxhdGZvcm1fZGV2aWNlLmg+CiAjaW5jbHVkZSA8bGludXgv c2xhYi5oPgogCisvKiBIYXJkZW5pbmcgZm9yIFNwZWN0cmUtdjEgKi8KKyNpbmNsdWRlIDxsaW51 eC9ub3NwZWMuaD4KKwogI2luY2x1ZGUgInVzYmlwX2NvbW1vbi5oIgogI2luY2x1ZGUgInZoY2ku aCIKIApAQCAtMjA1LDE2ICsyMDgsMjAgQEAgc3RhdGljIGludCB2aGNpX3BvcnRfZGlzY29ubmVj dChzdHJ1Y3QgdmhjaV9oY2QgKnZoY2lfaGNkLCBfX3UzMiByaHBvcnQpCiAJcmV0dXJuIDA7CiB9 CiAKLXN0YXRpYyBpbnQgdmFsaWRfcG9ydChfX3UzMiBwZGV2X25yLCBfX3UzMiByaHBvcnQpCitz dGF0aWMgaW50IHZhbGlkX3BvcnQoX191MzIgKnBkZXZfbnIsIF9fdTMyICpyaHBvcnQpCiB7Ci0J aWYgKHBkZXZfbnIgPj0gdmhjaV9udW1fY29udHJvbGxlcnMpIHsKLQkJcHJfZXJyKCJwZGV2ICV1 XG4iLCBwZGV2X25yKTsKKwlpZiAoKnBkZXZfbnIgPj0gdmhjaV9udW1fY29udHJvbGxlcnMpIHsK KwkJcHJfZXJyKCJwZGV2ICV1XG4iLCAqcGRldl9ucik7CiAJCXJldHVybiAwOwogCX0KLQlpZiAo cmhwb3J0ID49IFZIQ0lfSENfUE9SVFMpIHsKLQkJcHJfZXJyKCJyaHBvcnQgJXVcbiIsIHJocG9y dCk7CisJKnBkZXZfbnIgPSBhcnJheV9pbmRleF9ub3NwZWMoKnBkZXZfbnIsIHZoY2lfbnVtX2Nv bnRyb2xsZXJzKTsKKworCWlmICgqcmhwb3J0ID49IFZIQ0lfSENfUE9SVFMpIHsKKwkJcHJfZXJy KCJyaHBvcnQgJXVcbiIsICpyaHBvcnQpOwogCQlyZXR1cm4gMDsKIAl9CisJKnJocG9ydCA9IGFy cmF5X2luZGV4X25vc3BlYygqcmhwb3J0LCBWSENJX0hDX1BPUlRTKTsKKwogCXJldHVybiAxOwog fQogCkBAIC0yMzIsNyArMjM5LDcgQEAgc3RhdGljIHNzaXplX3QgZGV0YWNoX3N0b3JlKHN0cnVj dCBkZXZpY2UgKmRldiwgc3RydWN0IGRldmljZV9hdHRyaWJ1dGUgKmF0dHIsCiAJcGRldl9uciA9 IHBvcnRfdG9fcGRldl9ucihwb3J0KTsKIAlyaHBvcnQgPSBwb3J0X3RvX3JocG9ydChwb3J0KTsK IAotCWlmICghdmFsaWRfcG9ydChwZGV2X25yLCByaHBvcnQpKQorCWlmICghdmFsaWRfcG9ydCgm cGRldl9uciwgJnJocG9ydCkpCiAJCXJldHVybiAtRUlOVkFMOwogCiAJaGNkID0gcGxhdGZvcm1f Z2V0X2RydmRhdGEodmhjaXNbcGRldl9ucl0ucGRldik7CkBAIC0yNTgsNyArMjY1LDggQEAgc3Rh dGljIHNzaXplX3QgZGV0YWNoX3N0b3JlKHN0cnVjdCBkZXZpY2UgKmRldiwgc3RydWN0IGRldmlj ZV9hdHRyaWJ1dGUgKmF0dHIsCiB9CiBzdGF0aWMgREVWSUNFX0FUVFJfV08oZGV0YWNoKTsKIAot c3RhdGljIGludCB2YWxpZF9hcmdzKF9fdTMyIHBkZXZfbnIsIF9fdTMyIHJocG9ydCwgZW51bSB1 c2JfZGV2aWNlX3NwZWVkIHNwZWVkKQorc3RhdGljIGludCB2YWxpZF9hcmdzKF9fdTMyICpwZGV2 X25yLCBfX3UzMiAqcmhwb3J0LAorCQkgICAgICBlbnVtIHVzYl9kZXZpY2Vfc3BlZWQgc3BlZWQp CiB7CiAJaWYgKCF2YWxpZF9wb3J0KHBkZXZfbnIsIHJocG9ydCkpIHsKIAkJcmV0dXJuIDA7CkBA IC0zMjIsNyArMzMwLDcgQEAgc3RhdGljIHNzaXplX3QgYXR0YWNoX3N0b3JlKHN0cnVjdCBkZXZp Y2UgKmRldiwgc3RydWN0IGRldmljZV9hdHRyaWJ1dGUgKmF0dHIsCiAJCQkgICAgIHNvY2tmZCwg ZGV2aWQsIHNwZWVkKTsKIAogCS8qIGNoZWNrIHJlY2VpdmVkIHBhcmFtZXRlcnMgKi8KLQlpZiAo IXZhbGlkX2FyZ3MocGRldl9uciwgcmhwb3J0LCBzcGVlZCkpCisJaWYgKCF2YWxpZF9hcmdzKCZw ZGV2X25yLCAmcmhwb3J0LCBzcGVlZCkpCiAJCXJldHVybiAtRUlOVkFMOwogCiAJaGNkID0gcGxh dGZvcm1fZ2V0X2RydmRhdGEodmhjaXNbcGRldl9ucl0ucGRldik7Cg==