From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nguyen Viet Dung Subject: Re: [bug] kernel panic if writting data to mmc after suspendding Date: Mon, 14 Dec 2015 11:34:40 +0900 Message-ID: <566E2AC0.8060800@jinso.co.jp> References: <566A21D2.4080009@jinso.co.jp> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <566A21D2.4080009@jinso.co.jp> Sender: linux-sh-owner@vger.kernel.org To: linux-sh@vger.kernel.org, linux-mmc@vger.kernel.org, ltsi-dev@lists.linuxfoundation.org, =?UTF-8?B?U2ltb24g44GV44KT?= , Geert Uytterhoeven Cc: =?UTF-8?B?U+mWizEyL+WdguaIuFND?= , "Shimoda, Yoshihiro" , =?UTF-8?B?TWFnbnVzIOOBleOCkw==?= , Hisao Munakata List-Id: linux-mmc@vger.kernel.org Hello Mr.Geert While is testting LTSI-v4.1.13-rc1, we have found the following the failure of mmcif. 1. mount mmc block 2. write data to mmc block 3. suspend/resume 4. write data to mmc block one again => happen kernel panic (Probability in this test procedure is 100%) We have used git bisect to find cause of failure in LTS-v4.1.13 to LTSI-v4.1.13-rc1 and have found commit which cause failure. (On LTS-v4.1.13 has not this failure) drivers: sh: Disable PM runtime for multi-platform ARM with genpd commit :cbc41d0a761bffb3166a413a3c77100a737c0cd7 Please confirm for this failure with error log on Lager(Rcar-H2). Log:LAGER_ltsi-v4.1.13-rc1_copy-to-mmc-after-suspend-error_log.txt Best regard, Nguyen Viet Dung