Subject: Re: xmon: Clear all breakpoints when xmon is disabled via debugfs

From: Michael Ellerman <[email-masked]>
Date: Wed, 14 Mar 2018 20:28:33 +1100 (AEDT)

On Sun, 2018-03-04 at 17:31:32 UTC, Vaibhav Jain wrote:
> Presently when xmon is disabled by debugfs any existing
> instruction/data-access breakpoints set are not disabled. This may
> lead to kernel oops when those breakpoints are hit as the necessary
> debugger hooks aren't installed.
> 
> Hence this patch introduces a new function named clear_all_bpt()
> which is called when xmon is disabled via debugfs. The function will
> unpatch/clear all the trap and ciabr/dab based breakpoints.
> 
> Signed-off-by: Vaibhav Jain <[email-masked]>
> Reviewed-by: Balbir Singh <[email-masked]>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/1ff3b404019adf9d605224e1dce067

cheers