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Message-ID: <ee7a1664-dfe2-41c4-b635-47affec03ce6@oracle.com>
Date: Fri, 19 Apr 2024 22:09:38 +0530
User-Agent: Mozilla Thunderbird
Subject: Re: [bug-report] task info hung problem in fb_deferred_io_work()
To: Nam Cao <namcao@linutronix.de>
Cc: jayalk@intworks.biz, Daniel Vetter <daniel@ffwll.ch>, deller@gmx.de,
        linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org,
        tiwai@suse.de, bigeasy@linutronix.de, patrik.r.jakobsson@gmail.com,
        LKML <linux-kernel@vger.kernel.org>,
        Vegard Nossum
 <vegard.nossum@oracle.com>,
        George Kennedy <george.kennedy@oracle.com>,
        Darren Kenny <darren.kenny@oracle.com>, chuansheng.liu@intel.com,
        "stable@vger.kernel.org" <stable@vger.kernel.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Sasha Levin <sashal@kernel.org>
References: <271372d6-e665-4e7f-b088-dee5f4ab341a@oracle.com>
 <20240419165915.228c76e9@namcao>
 <796eecdb-f574-4eca-8cb7-ff426505435c@oracle.com>
 <20240419182313.3f36ac0b@namcao>
Content-Language: en-US
From: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>
In-Reply-To: <20240419182313.3f36ac0b@namcao>
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On 19/04/24 21:53, Nam Cao wrote:
> On 2024-04-19 Harshit Mogalapalli wrote:
>> +CC stable( heads up as this is a regression affecting 5.15.y and
>> probably others, Greg: this was reproducible upstream so reported
>> everything w.r.t upstream code but initially found on 5.15.y)
> 
> No worry about this, I will add a "Cc: <stable@vger.kernel.org>" tag
> to the patch, and the stable folks (or their scripts) will pick it up.
> 

Thanks for that!

>> This patch works well against the reproducer, this simplified repro and
>> the longer repro which syzkaller generated couldn't trigger any hang
>> with the below patch applied.
> 
> Great, thanks! Can I add
> 	Reported-and-tested-by: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>
> to the patch?
> 
Sure, that would be good!

Thanks,
Harshit
> Best regards,
> Nam