linux-ext4 - Re: CRASH : RCU detected stall

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Message-ID: <20170613173044.sdibg23cfvpwwxud@thunk.org>
Date:   Tue, 13 Jun 2017 13:30:44 -0400
From:   Theodore Ts'o <tytso@....edu>
To:     Ramin Farajpour Cami <ramin.blackhat@...il.com>
Cc:     adilger.kernel@...ger.ca, linux-ext4@...r.kernel.org,
        linux-kernel@...r.kernel.org, syzkaller@...glegroups.com
Subject: Re: CRASH : RCU detected stall

On Tue, Jun 13, 2017 at 07:35:37PM +0430, Ramin Farajpour Cami wrote:
> Hi,
> 
> I've got the following error report while fuzzing the kernel with syzkaller
> version (4.12-rc5)
> 
> https://groups.google.com/forum/#!topic/syzkaller/4e8MkNnRFRQ

Can you reliably reproduce this failure?  If so, please give details.
Unfortunately this sort of RCU self-stall can be caused by any number
of things.

				- Ted