Re: [debug patch] printk: Add a printk killswitch to robustify NMI watchdog messages
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- Subject: Re: [debug patch] printk: Add a printk killswitch to robustify NMI watchdog messages
- From: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
- Date: Mon, 06 Jun 2011 20:19:09 +0200
- Cc: Arne Jansen <lists@xxxxxxxxxxxxxx>, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>, mingo@xxxxxxxxxx, hpa@xxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, efault@xxxxxx, npiggin@xxxxxxxxx, akpm@xxxxxxxxxxxxxxxxxxxx, frank.rowand@xxxxxxxxxxx, tglx@xxxxxxxxxxxxx, linux-tip-commits@xxxxxxxxxxxxxxx
- In-reply-to: <20110606180733.GA20123@xxxxxxx>
On Mon, 2011-06-06 at 20:07 +0200, Ingo Molnar wrote:
> - The first one that minimally removes the lockdep_off()/on() dance
> and fixes the regression: the patch that i sent earlier today.
> I *think* that should fix the crash.
>
> 3.0 material.
I think the lock_is_held() fix is the urgent one, all the others are
make printk() suck less patches, ie. not so very important.
Without that lock_is_held() thing all lockdep_off() sites, inc ntfs will
still be able to trigger this problem.
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