From: Bart Van Assche <bvanassche@acm.org>
To: Changheun Lee <nanich.lee@samsung.com>
Cc: axboe@kernel.dk, bgoncalv@redhat.com, hch@lst.de,
jaegeuk@kernel.org, linux-block@vger.kernel.org,
ming.lei@redhat.com, yi.zhang@redhat.com
Subject: Re: [PATCH v2] block: Improve limiting the bio size
Date: Wed, 28 Apr 2021 08:52:03 -0700 [thread overview]
Message-ID: <a1759842-eb14-e477-fdf6-b6844e5aa29f@acm.org> (raw)
In-Reply-To: <20210428072123.3155-1-nanich.lee@samsung.com>
On 4/28/21 12:21 AM, Changheun Lee wrote:
> Actually I don't know why NULL pointer dereference is occurred with Bart's
> patch in blk_rq_map_kern(). And same problem have not occured yet in my
> test environment with Bart's patch.
> Maybe I missed something, or missunderstood?
The call trace that I shared on the linux-block mailing list was
encountered inside a VM that has a SATA disk attached to it and also a
SATA CD-ROM. Does replicating that setup allow to reproduce the NULL
pointer dereference that I reported?
Bart.
next prev parent reply other threads:[~2021-04-28 15:52 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-25 4:30 [PATCH v2] block: Improve limiting the bio size Bart Van Assche
2021-04-25 7:36 ` Yi Zhang
2021-04-25 16:19 ` Jens Axboe
2021-04-26 6:32 ` Yi Zhang
2021-04-26 8:34 ` Changheun Lee
2021-04-26 16:17 ` Bart Van Assche
2021-04-27 0:28 ` Changheun Lee
2021-04-27 2:46 ` Bart Van Assche
2021-04-27 4:12 ` Changheun Lee
2021-04-27 14:59 ` Bart Van Assche
2021-04-28 7:21 ` Changheun Lee
2021-04-28 15:52 ` Bart Van Assche [this message]
2021-04-29 6:39 ` Changheun Lee
2021-05-03 9:28 ` Changheun Lee
2021-05-03 16:35 ` Bart Van Assche
2021-04-26 12:54 ` Jens Axboe
2021-04-26 23:43 ` Changheun Lee
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