linux-kernel - Re: kprobes sanity test fails on next-20190708

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Date:   Mon, 8 Jul 2019 16:56:50 +0100
From:   James Morse <james.morse@....com>
To:     Anders Roxell <anders.roxell@...aro.org>
Cc:     naveen.n.rao@...ux.ibm.com, anil.s.keshavamurthy@...el.com,
        davem@...emloft.net, mhiramat@...nel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: kprobes sanity test fails on next-20190708

Hi,

On 08/07/2019 15:11, Anders Roxell wrote:
> argh... resending, with plaintext... Sorry =/
> 
> I tried to build a next-201908 defconfig + CONFIG_KPROBES=y and
> CONFIG_KPROBES_SANITY_TEST=y
> 
> I get the following Call trace, any ideas?
> I've tried tags back to next-20190525 and they also failes... I haven't
> found a commit that works yet.
> 
> [    0.098694] Kprobe smoke test: started
> [    0.102001] audit: type=2000 audit(0.088:1): state=initialized
> audit_enabled=0 res=1
> [    0.104753] Internal error: aarch64 BRK: f2000004 [#1] PREEMPT SMP

This sounds like the issue Mark reported:
https://lore.kernel.org/r/20190702165008.GC34718@lakrids.cambridge.arm.com

It doesn't look like Steve's patch has percolated into next yet:
https://lore.kernel.org/lkml/20190703103715.32579c25@gandalf.local.home/

Could you give that a try to see if this is a new issue?


Thanks,

James