RE: BUG: unable to handle kernel NULL pointer dereference at 0000000000000038 !//RE: kernel BUG at kernel/locking/rtmutex.c:1027

[Feng Feng24 Liu]

Thanks Julia, I will try it

Thanks
Feng

>-----Original Message-----
>From: Julia Cartwright [mailto:julia@xxxxxx]
>Sent: Tuesday, June 27, 2017 10:28 PM
>To: Feng Feng24 Liu
>Cc: Sebastian Andrzej Siewior; Steven Rostedt; Mike Galbraith;
>linux-kernel@xxxxxxxxxxxxxxx; linux-rt-users@xxxxxxxxxxxxxxx
>Subject: Re: BUG: unable to handle kernel NULL pointer dereference at
>0000000000000038 !//RE: kernel BUG at kernel/locking/rtmutex.c:1027
>
>On Tue, Jun 27, 2017 at 05:47:41AM +0000, Feng Feng24 Liu wrote:
>> Hi, Julia
>> 	Thanks for your kindly hit. I will try this patch
>> 	The problem is accidental. I will try to reproduce it.
>> 	BTW, could you help to give the link about the emails which
>> 	discuss about " nsfs: mark dentry with DCACHE_RCUACCESS ". I
>> 	cannot find them(just patch email)
>
>Conversation upstream started with a syzkaller-found problem here:
>
>   https://marc.info/?l=linux-netdev&m=149183505630266&w=2
>
>Hopefully that helps,
>   Julia