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] x86: mce: fix kernel panic when check_interval is changed From: Seunghun Han Message-Id: <20180302202706.9434-1-kkamagui@gmail.com> Date: Sat, 3 Mar 2018 05:27:06 +0900 To: Tony Luck , Borislav Petkov Cc: linux-edac@vger.kernel.org, linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Seunghun Han List-ID: SSBhbSBTZXVuZ2h1biBIYW4gYW5kIGEgc2VuaW9yIHNlY3VyaXR5IHJlc2VhcmNoZXIgYXQgTmF0 aW9uYWwgU2VjdXJpdHkKUmVzZWFyY2ggSW5zdGl0dXRlIG9mIFNvdXRoIEtvcmVhLgoKSSBmb3Vu ZCBhIHNlY3VyaXR5IGlzc3VlIHdoaWNoIGNhbiBtYWtlIGtlcm5lbCBwYW5pYyBpbiB1c2Vyc3Bh Y2UuIEFmdGVyCmFuYWx5emluZyB0aGUgaXNzdWUgY2FyZWZ1bGx5LCBJIGZvdW5kIHRoYXQgTUNF IGRyaXZlciBpbiB0aGUga2VybmVsIGhhcyBhCnByb2JsZW0gd2hpY2ggY2FuIGJlIG9jY3VycmVk IGluIFNNUCBlbnZpcm9ubWVudC4KClRoZSBjaGVja19pbnRlcnZhbCBmaWxlIGluCi9zeXMvZGV2 aWNlcy9zeXN0ZW0vbWFjaGluZWNoZWNrL21hY2hpbmVjaGVjazxjcHUgbnVtYmVyPiBkaXJlY3Rv cnkgaXMgYQpnbG9iYWwgdGltZXIgdmFsdWUgZm9yIE1DRSBwb2xsaW5nLiBJZiBpdCBpcyBjaGFu Z2VkIGJ5IG9uZSBDUFUsIE1DRSBkcml2ZXIKaW4ga2VybmVsIGNhbGxzIG1jZV9yZXN0YXJ0KCkg ZnVuY3Rpb24gaW4gc3RvcmVfaW50X3dpdGhfcmVzdGFydCgpIGZ1bmN0aW9uCmFuZCBicm9hZGNh c3RzIHRoZSBldmVudCB0byBvdGhlciBDUFVzIHRvIGRlbGV0ZSBhbmQgcmVzdGFydCBNQ0UgcG9s bGluZwp0aW1lci4KClRoZSBfX21jaGVja19jcHVfaW5pdF90aW1lcigpIGZ1bmN0aW9uIHdoaWNo IGlzIGNhbGxlZCBieSBtY2VfcmVzdGFydCgpCmZ1bmN0aW9uIGluaXRpYWxpemVzIHRoZSBtY2Vf dGltZXIgdmFyaWFibGUsIGFuZCB0aGUgImxvY2siIGluIG1jZV90aW1lciBpcwphbHNvIHJlaW5p dGlhbGl6ZWQuIElmIG1vcmUgdGhhbiBvbmUgQ1BVIHdyaXRlIGEgc3BlY2lmaWMgdmFsdWUgdG8K Y2hlY2tfaW50ZXJ2YWwgZmlsZSBjb25jdXJyZW50bHksIG9uZSBjYW4gaW5pdGlhbGl6ZSB0aGUg ImxvY2siIGluIG1jZV90aW1lcgp3aGlsZSB0aGUgb3RoZXJzIGFyZSBoYW5kbGluZyAibG9jayIg aW4gbWNlX3RpbWVyLiBUaGlzIHByb2JsZW0gY2F1c2VzIHNvbWUKc3luY2hyb25pemF0aW9uIGVy cm9ycyBzdWNoIGFzIGtlcm5lbCBwYW5pYyBhbmQga2VybmVsIGhhbmcuIE90aGVyIGZ1bmN0aW9u cwpzdWNoIGFzIHNldF9pZ25vcmVfY2UoKSwgc2V0X2NtY2lfZGlzYWJsZWQoKSwgYW5kIG1jZV9l bmFibGVfY2UoKSBhbHNvCmhhdmUgc3luY2hyb25pemF0aW9uIHByb2JsZW1zLgoKSXQgY291bGQg YmUgYSBzZWN1cml0eSBwcm9ibGVtIGJlY2F1c2UgdGhlIGF0dGFja2VyIGNvdWxkIG1ha2Uga2Vy bmVsIHBhbmljCmJ5IHdyaXRpbmcgYSB2YWx1ZSB0byB0aGUgY2hlY2tfaW50ZXJ2YWwgZmlsZSBp biB1c2Vyc3BhY2UsIGFuZCBpdCBjb3VsZCBiZQp1c2VkIGZvciBEZW5pYWwtb2YtU2VydmljZSAo RG9TKSBhdHRhY2suCgpUbyBmaXggdGhpcyBwcm9ibGVtLCBJIGFkZGVkIGEgbWNlX3N5c2ZzX211 dGV4IHRvIHNlcmlhbGl6ZSByZXF1ZXN0cyBmb3IKdGltZXIgYW5kIHN5c2ZzIGZ1bmN0aW9ucy4K ClNpZ25lZC1vZmYtYnk6IFNldW5naHVuIEhhbiA8a2thbWFndWlAZ21haWwuY29tPgotLS0KQ2hh bmdlcyBzaW5jZSB2MjogYWRkIGEgbXV0ZXggdG8gc3lzZnMgZnVuY3Rpb25zIGFjY29yZGluZyB0 byByZXZpZXcKcmVzdWx0LgpDaGFuZ2VzIHNpbmNlIHYxOiBhZGQgbWNlX3N5c2ZzX211dGV4IGFj Y29yZGluZyB0byByZXZpZXcgcmVzdWx0LgoKIGFyY2gveDg2L2tlcm5lbC9jcHUvbWNoZWNrL21j ZS5jIHwgMjAgKysrKysrKysrKysrKysrKysrKy0KIDEgZmlsZSBjaGFuZ2VkLCAxOSBpbnNlcnRp b25zKCspLCAxIGRlbGV0aW9uKC0pCgpkaWZmIC0tZ2l0IGEvYXJjaC94ODYva2VybmVsL2NwdS9t Y2hlY2svbWNlLmMgYi9hcmNoL3g4Ni9rZXJuZWwvY3B1L21jaGVjay9tY2UuYwppbmRleCA3MDY1 ODQ2ODFhNGMuLjI0M2Y0NmE0MGVmYiAxMDA2NDQKLS0tIGEvYXJjaC94ODYva2VybmVsL2NwdS9t Y2hlY2svbWNlLmMKKysrIGIvYXJjaC94ODYva2VybmVsL2NwdS9tY2hlY2svbWNlLmMKQEAgLTU1 LDYgKzU1LDcgQEAKICNpbmNsdWRlICJtY2UtaW50ZXJuYWwuaCIKIAogc3RhdGljIERFRklORV9N VVRFWChtY2VfbG9nX211dGV4KTsKK3N0YXRpYyBERUZJTkVfTVVURVgobWNlX3N5c2ZzX211dGV4 KTsKIAogI2RlZmluZSBDUkVBVEVfVFJBQ0VfUE9JTlRTCiAjaW5jbHVkZSA8dHJhY2UvZXZlbnRz L21jZS5oPgpAQCAtMjA0NSw4ICsyMDQ2LDExIEBAIHN0YXRpYyB2b2lkIG1jZV9lbmFibGVfY2Uo dm9pZCAqYWxsKQogCQlyZXR1cm47CiAJY21jaV9yZWVuYWJsZSgpOwogCWNtY2lfcmVjaGVjaygp OwotCWlmIChhbGwpCisJaWYgKGFsbCkgeworCQltdXRleF9sb2NrKCZtY2Vfc3lzZnNfbXV0ZXgp OwogCQlfX21jaGVja19jcHVfaW5pdF90aW1lcigpOworCQltdXRleF91bmxvY2soJm1jZV9zeXNm c19tdXRleCk7CisJfQogfQogCiBzdGF0aWMgc3RydWN0IGJ1c190eXBlIG1jZV9zdWJzeXMgPSB7 CkBAIC0yMDkwLDYgKzIwOTQsNyBAQCBzdGF0aWMgc3NpemVfdCBzZXRfaWdub3JlX2NlKHN0cnVj dCBkZXZpY2UgKnMsCiAJaWYgKGtzdHJ0b3U2NChidWYsIDAsICZuZXcpIDwgMCkKIAkJcmV0dXJu IC1FSU5WQUw7CiAKKwltdXRleF9sb2NrKCZtY2Vfc3lzZnNfbXV0ZXgpOwogCWlmIChtY2FfY2Zn Lmlnbm9yZV9jZSBeICEhbmV3KSB7CiAJCWlmIChuZXcpIHsKIAkJCS8qIGRpc2FibGUgY2UgZmVh dHVyZXMgKi8KQEAgLTIxMDIsNiArMjEwNyw4IEBAIHN0YXRpYyBzc2l6ZV90IHNldF9pZ25vcmVf Y2Uoc3RydWN0IGRldmljZSAqcywKIAkJCW9uX2VhY2hfY3B1KG1jZV9lbmFibGVfY2UsICh2b2lk ICopMSwgMSk7CiAJCX0KIAl9CisJbXV0ZXhfdW5sb2NrKCZtY2Vfc3lzZnNfbXV0ZXgpOworCiAJ cmV0dXJuIHNpemU7CiB9CiAKQEAgLTIxMTQsNiArMjEyMSw3IEBAIHN0YXRpYyBzc2l6ZV90IHNl dF9jbWNpX2Rpc2FibGVkKHN0cnVjdCBkZXZpY2UgKnMsCiAJaWYgKGtzdHJ0b3U2NChidWYsIDAs ICZuZXcpIDwgMCkKIAkJcmV0dXJuIC1FSU5WQUw7CiAKKwltdXRleF9sb2NrKCZtY2Vfc3lzZnNf bXV0ZXgpOwogCWlmIChtY2FfY2ZnLmNtY2lfZGlzYWJsZWQgXiAhIW5ldykgewogCQlpZiAobmV3 KSB7CiAJCQkvKiBkaXNhYmxlIGNtY2kgKi8KQEAgLTIxMjUsNiArMjEzMyw4IEBAIHN0YXRpYyBz c2l6ZV90IHNldF9jbWNpX2Rpc2FibGVkKHN0cnVjdCBkZXZpY2UgKnMsCiAJCQlvbl9lYWNoX2Nw dShtY2VfZW5hYmxlX2NlLCBOVUxMLCAxKTsKIAkJfQogCX0KKwltdXRleF91bmxvY2soJm1jZV9z eXNmc19tdXRleCk7CisKIAlyZXR1cm4gc2l6ZTsKIH0KIApAQCAtMjEzMiw4ICsyMTQyLDE2IEBA IHN0YXRpYyBzc2l6ZV90IHN0b3JlX2ludF93aXRoX3Jlc3RhcnQoc3RydWN0IGRldmljZSAqcywK IAkJCQkgICAgICBzdHJ1Y3QgZGV2aWNlX2F0dHJpYnV0ZSAqYXR0ciwKIAkJCQkgICAgICBjb25z dCBjaGFyICpidWYsIHNpemVfdCBzaXplKQogeworCXVuc2lnbmVkIGxvbmcgb2xkX2NoZWNrX2lu dGVydmFsID0gY2hlY2tfaW50ZXJ2YWw7CiAJc3NpemVfdCByZXQgPSBkZXZpY2Vfc3RvcmVfaW50 KHMsIGF0dHIsIGJ1Ziwgc2l6ZSk7CisKKwlpZiAoY2hlY2tfaW50ZXJ2YWwgPT0gb2xkX2NoZWNr X2ludGVydmFsKQorCQlyZXR1cm4gcmV0OworCisJbXV0ZXhfbG9jaygmbWNlX3N5c2ZzX211dGV4 KTsKIAltY2VfcmVzdGFydCgpOworCW11dGV4X3VubG9jaygmbWNlX3N5c2ZzX211dGV4KTsKKwog CXJldHVybiByZXQ7CiB9CiAK