linux-kernel - Re: [REGRESSION] "split bio_kmalloc from bio_alloc_bioset" causing crash shortly after bootup

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Message-ID: <BYAPR04MB496574519941459FE83C437D86809@BYAPR04MB4965.namprd04.prod.outlook.com>
Date:   Tue, 23 Feb 2021 07:37:52 +0000
From:   Chaitanya Kulkarni <Chaitanya.Kulkarni@....com>
To:     Christoph Hellwig <hch@....de>
CC:     Jens Axboe <axboe@...nel.dk>, David Anderson <dvander@...gle.com>,
        Alistair Delva <adelva@...gle.com>,
        Todd Kjos <tkjos@...gle.com>,
        Amit Pundir <amit.pundir@...aro.org>,
        YongQin Liu <yongqin.liu@...aro.org>,
        lkml <linux-kernel@...r.kernel.org>,
        "linux-block@...r.kernel.org" <linux-block@...r.kernel.org>
Subject: Re: [REGRESSION] "split bio_kmalloc from bio_alloc_bioset" causing
 crash shortly after bootup

On 2/22/21 23:10, Christoph Hellwig wrote:
> On Tue, Feb 23, 2021 at 03:51:23AM +0000, Chaitanya Kulkarni wrote:
>> Looking at the other call sites do we need something like following ?
>> Since __blk_queue_bounce() passes the NULL for the passthru case as a
>> bio_set value ?
> Well, that is a somewhat odd calling convention.  What about the patch below
> instead?  That being we really need to kill this bouncing code off..
I assume you are sending this patch, let me know otherwise.
If you do please add, looks good.

Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@....com>