linux-kernel - Re: [BUG REPORT] Kernel panic on 3.9.0-rc7-4-gbb33db7

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Message-ID: <20130419121532.30947.69296@localhost.localdomain>
Date:	Fri, 19 Apr 2013 08:15:32 -0400
From:	Chris Mason <clmason@...ionio.com>
To:	Tejun Heo <tj@...nel.org>, Wanlong Gao <gaowanlong@...fujitsu.com>
CC:	Jens Axboe <axboe@...nel.dk>, Steven Rostedt <rostedt@...dmis.org>,
	"namhyung@...il.com" <namhyung@...il.com>,
	"agk@...hat.com" <agk@...hat.com>,
	"dm-devel@...hat.com" <dm-devel@...hat.com>,
	"neilb@...e.de" <neilb@...e.de>,
	LKML <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	"linux-btrfs@...r.kernel.org" <linux-btrfs@...r.kernel.org>
Subject: Re: [BUG REPORT] Kernel panic on 3.9.0-rc7-4-gbb33db7

Quoting Tejun Heo (2013-04-19 01:57:54)
> 
> Ewweeeeeeeeeeeeeeeeeehh........
> 
> No wonder this thing crashes.  Chris, can't the original bio carry
> bbio in bi_private and let end_bio_extent_readpage() free the bbio
> instead of abusing bi_bdev like this?

Yes, we can definitely carry bbio up higher in the stack.  I'll patch it
up right now.  I do agree that it'll be too big for -final, but we'll
have it either way.

-chris

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