Re: [PATCH v3 0/5] ARM64: Add kernel probes(Kprobes) support

From: David Long
Date: Wed Dec 03 2014 - 19:03:04 EST

On 12/03/14 17:54, David Long wrote:
On 12/03/14 09:54, William Cohen wrote:
On 12/01/2014 04:37 AM, Masami Hiramatsu wrote:
(2014/11/29 1:01), Steve Capper wrote:


That would explain why the state of play of the interrupts is in an
unexpected state in the crash I reported:
"The point of failure in the panic was:

static inline void check_irqs_on(void)
#ifdef irqs_disabled

This is all new to me so I'm still at the head-scratching stage.

Ah, I see.

Thank you,

Does the above make sense to you? Have you managed to reproduce the
crash I get?


I have easily produced a crash although it doesn't look to me like the
same one. I'm getting a NULL pointer dereference. The PMU stuff (used
by perf record|stat -e) should be quite independent of kprobes though.


Oops, never mind the above bit. I see this is not PMU-related, but use of kprobes through perf. My bad.


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