linux-kernel - Re: Boot regression (was "Re: [PATCH] genhd: Do not hold event lock when scheduling workqueue elements")

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Message-ID: <20170214142837.GB20706@lst.de>
Date:   Tue, 14 Feb 2017 15:28:37 +0100
From:   "hch@....de" <hch@....de>
To:     Dexuan Cui <decui@...rosoft.com>
Cc:     "hch@....de" <hch@....de>, Jens Axboe <axboe@...nel.dk>,
        Bart Van Assche <Bart.VanAssche@...disk.com>,
        "hare@...e.com" <hare@...e.com>, "hare@...e.de" <hare@...e.de>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-block@...r.kernel.org" <linux-block@...r.kernel.org>,
        "jth@...nel.org" <jth@...nel.org>,
        Nick Meier <Nick.Meier@...rosoft.com>,
        "Alex Ng (LIS)" <alexng@...rosoft.com>,
        Long Li <longli@...rosoft.com>,
        "Adrian Suhov (Cloudbase Solutions SRL)" <v-adsuho@...rosoft.com>,
        "Chris Valean (Cloudbase Solutions SRL)" <v-chvale@...rosoft.com>
Subject: Re: Boot regression (was "Re: [PATCH] genhd: Do not hold event
        lock when scheduling workqueue elements")

Ok, thanks for testing.  Can you try the patch below?  It fixes a
clear problem which was partially papered over before the commit
you bisected to, although it can't explain why blk-mq still works.


View attachment "0001-scsi-always-zero-sshdr-in-scsi_normalize_sense.patch" of type "text/x-patch" (1000 bytes)