Re: [linux-next][bock] WARNING: CPU: 22 PID: 0 at block/blk-core.c:2655 .blk_update_request+0x4f8/0x500

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To: Jens Axboe <axboe@xxxxxxxxx>
Subject: Re: [linux-next][bock] WARNING: CPU: 22 PID: 0 at block/blk-core.c:2655 .blk_update_request+0x4f8/0x500
From: Christoph Hellwig <hch@xxxxxx>
Date: Tue, 9 May 2017 11:03:16 +0200
Cc: Abdul Haleem <abdhalee@xxxxxxxxxxxxxxxxxx>, linux-block <linux-block@xxxxxxxxxxxxxxx>, sachinp <sachinp@xxxxxxxxxxxxxxxxxx>, Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>, linuxppc-dev <linuxppc-dev@xxxxxxxxxxxxxxxx>, linux-kernel <linux-kernel@xxxxxxxxxxxxxxx>, "Martin K. Petersen" <martin.petersen@xxxxxxxxxx>, Christoph Hellwig <hch@xxxxxx>
In-reply-to: <f1a1ced1-6f3c-8fec-2e2d-4db4c09e31fc@kernel.dk>
User-agent: Mutt/1.5.17 (2007-11-01)

On Mon, May 08, 2017 at 08:00:41AM -0600, Jens Axboe wrote:
> Christoph, Martin - any ideas? Trace from Abdul below.

Btw, what page size does the system have?

> 
> WARNING: CPU: 12 PID: 0 at block/blk-core.c:2651 .blk_update_request+0x4cc/0x4e0

Any knowledge from tracing or printk on what command is complete?
Both req_op type and SCSI command?

References:
- Re: [linux-next][bock] WARNING: CPU: 22 PID: 0 at block/blk-core.c:2655 .blk_update_request+0x4f8/0x500
  - From: Jens Axboe
- Re: [linux-next][bock] WARNING: CPU: 22 PID: 0 at block/blk-core.c:2655 .blk_update_request+0x4f8/0x500
  - From: Abdul Haleem
- Re: [linux-next][bock] WARNING: CPU: 22 PID: 0 at block/blk-core.c:2655 .blk_update_request+0x4f8/0x500
  - From: Jens Axboe

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