lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:   Mon, 18 Feb 2019 14:46:49 +0900
From:   Sergey Senozhatsky <>
To:     Yao HongBo <>
Cc:     Sergey Senozhatsky <>,,
Subject: Re: possible deadlock in console_unlock


On (02/16/19 15:59), Yao HongBo wrote:
> > GFP_NOWARN is probably the best option for now. Yes, it, maybe,
> > will not work for fault-injection cases; but printk_safe approach
> > is harder to push for, especially given that printk_safe maybe will
> > not even exist in the future.
> I have tried GFP_NOWARN, but the problem still exists.
> Only print_safe contexts for tty locks can solve the problem.
> My test scenario is falt-injection.

Oh, I see. Yes, fault-injection is special.

I suspect that this patch series can be helpful then

but first we need to figure out if printk_safe will
stay in the kernel (this will take some time).


Powered by blists - more mailing lists