linux-kernel - Re: [PATCH] arm64: kprobes: Fix Uexpected kernel BRK exception at EL1

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Date:   Fri, 22 Jan 2021 18:58:57 +0000
From:   Catalin Marinas <catalin.marinas@....com>
To:     Qais Yousef <qais.yousef@....com>, Will Deacon <will@...nel.org>
Cc:     linux-kernel@...r.kernel.org,
        Jean-Philippe Brucker <jean-philippe@...aro.org>,
        linux-arm-kernel@...ts.infradead.org,
        Masami Hiramatsu <mhiramat@...nel.org>
Subject: Re: [PATCH] arm64: kprobes: Fix Uexpected kernel BRK exception at EL1

On Fri, 22 Jan 2021 11:09:09 +0000, Qais Yousef wrote:
> I was hitting the below panic continuously when attaching kprobes to
> scheduler functions
> 
> 	[  159.045212] Unexpected kernel BRK exception at EL1
> 	[  159.053753] Internal error: BRK handler: f2000006 [#1] PREEMPT SMP
> 	[  159.059954] Modules linked in:
> 	[  159.063025] CPU: 2 PID: 0 Comm: swapper/2 Not tainted 5.11.0-rc4-00008-g1e2a199f6ccd #56
> 	[rt-app] <notice> [1] Exiting.[  159.071166] Hardware name: ARM Juno development board (r2) (DT)
> 	[  159.079689] pstate: 600003c5 (nZCv DAIF -PAN -UAO -TCO BTYPE=--)
> 
> [...]

Applied to arm64 (for-next/fixes), thanks!

[1/1] arm64: kprobes: Fix Uexpected kernel BRK exception at EL1
      https://git.kernel.org/arm64/c/75bd4bff300b

-- 
Catalin