Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
From:   Will Deacon <will@kernel.org>
To:     Amit Daniel Kachhap <amit.kachhap@arm.com>,
        linux-arm-kernel@lists.infradead.org
Cc:     catalin.marinas@arm.com, Will Deacon <will@kernel.org>,
        linux-kernel@vger.kernel.org,
        Vincenzo Frascino <Vincenzo.Frascino@arm.com>,
        Bhupesh Sharma <bhsharma@redhat.com>,
        kexec@lists.infradead.org, Mark Rutland <mark.rutland@arm.com>,
        James Morse <james.morse@arm.com>
Subject: Re: [PATCH v3 1/2] arm64/crash_core: Export KERNELPACMASK in vmcoreinfo
Date:   Mon, 11 May 2020 17:27:54 +0100
Message-Id: <158920375123.230375.8898075017057814195.b4-ty@kernel.org>
In-Reply-To: <1589202116-18265-1-git-send-email-amit.kachhap@arm.com>
References: <1589202116-18265-1-git-send-email-amit.kachhap@arm.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On Mon, 11 May 2020 18:31:55 +0530, Amit Daniel Kachhap wrote:
> Recently arm64 linux kernel added support for Armv8.3-A Pointer
> Authentication feature. If this feature is enabled in the kernel and the
> hardware supports address authentication then the return addresses are
> signed and stored in the stack to prevent ROP kind of attack. Kdump tool
> will now dump the kernel with signed lr values in the stack.
> 
> Any user analysis tool for this kernel dump may need the kernel pac mask
> information in vmcoreinfo to generate the correct return address for
> stacktrace purpose as well as to resolve the symbol name.
> 
> [...]

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

[1/2] arm64/crash_core: Export KERNELPACMASK in vmcoreinfo
      https://git.kernel.org/arm64/c/203b1152d18c
[2/2] Documentation/vmcoreinfo: Add documentation for 'KERNELPACMASK'
      https://git.kernel.org/arm64/c/c0fc00ec6304

Cheers,
-- 
Will

https://fixes.arm64.dev
https://next.arm64.dev
https://will.arm64.dev