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From: John Ogness <>
To: Sebastian Andrzej Siewior <>
Cc: Sebastien Fabre <>,
Subject: Re: Crash tool issue since printk re-implementation
Date: Fri, 14 Feb 2020 14:42:57 +0100
Message-ID: <> (raw)
In-Reply-To: <> (Sebastian Andrzej Siewior's message of "Fri, 14 Feb 2020 13:34:31 +0100")

On 2020-02-14, Sebastian Andrzej Siewior <> wrote:
> On 2020-02-12 12:10:23 [+0000], Sebastien Fabre wrote:
>> Since kernel v5.0, PREEMPT_RT patches contain printk
>> re-implementation. This re-implementation removes some log symbols in
>> VMCOREINFO and crash tool cannot retrieve kernel logs (because
>> symbols no more exist).  Is this impact on crash expected? If so, how
>> can we retrieve a functional crash tool with kernel v5.0 (and
>> following) ?
> It is known, yes. I'm aware of crash and the gdb scritps should also
> suffer from this. 

Perhaps this should be listed under the "Known issues" of the PREEMPT_RT
release announcements.

John Ogness

  reply index

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-12 12:10 Sebastien Fabre
2020-02-14 12:34 ` Sebastian Andrzej Siewior
2020-02-14 13:42   ` John Ogness [this message]
2020-02-14 14:11     ` Gene Heskett

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