From: Michael Ellerman <patch-notifications@ellerman.id.au>
To: Vaibhav Jain <vaibhav@linux.vnet.ibm.com>,
Balbir Singh <bsingharora@gmail.com>
Cc: Vaibhav Jain <vaibhav@linux.vnet.ibm.com>,
Frederic Barrat <fbarrat@linux.vnet.ibm.com>,
linux-kernel@vger.kernel.org, Paul Mackerras <paulus@samba.org>,
Nicholas Piggin <npiggin@gmail.com>,
Douglas Miller <dougmill@linux.vnet.ibm.com>,
linuxppc-dev@lists.ozlabs.org
Subject: Re: xmon: Clear all breakpoints when xmon is disabled via debugfs
Date: Wed, 14 Mar 2018 20:28:33 +1100 (AEDT) [thread overview]
Message-ID: <401RHG6psmz9sVP@ozlabs.org> (raw)
In-Reply-To: <20180304173132.19677-1-vaibhav@linux.vnet.ibm.com>
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 <vaibhav@linux.vnet.ibm.com>
> Reviewed-by: Balbir Singh <bsingharora@gmail.com>
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/1ff3b404019adf9d605224e1dce067
cheers
prev parent reply other threads:[~2018-03-14 9:29 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-04 17:31 [PATCH] xmon: Clear all breakpoints when xmon is disabled via debugfs Vaibhav Jain
2018-03-04 21:27 ` Balbir Singh
2018-03-14 9:28 ` Michael Ellerman [this message]
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