From: Ard Biesheuvel <ard.biesheuvel@linaro.org>
To: edk2-devel@lists.01.org
Cc: lersek@redhat.com, leif.lindholm@linaro.org, philmd@redhat.com,
Ard Biesheuvel <ard.biesheuvel@linaro.org>
Subject: [PATCH 0/2] Clear frame pointer in startup code on AARCH64 systems
Date: Fri, 16 Nov 2018 14:55:56 -0800 [thread overview]
Message-ID: <20181116225558.27720-1-ard.biesheuvel@linaro.org> (raw)
The backtrace code on AARCH64 does not sanitize the frame pointer values
it pulls of the stack when attempting to do a backtrace, and so junk left
in the frame pointer register may result in a recursive exception and a
truncated backtrace.
Ard Biesheuvel (2):
ArmPlatformPkg: clear frame pointer in startup code
ArmVirtPkg/PrePi: clear frame pointer in startup code
ArmPlatformPkg/PrePeiCore/AArch64/PrePeiCoreEntryPoint.S | 3 +++
ArmPlatformPkg/PrePi/AArch64/ModuleEntryPoint.S | 3 +++
ArmVirtPkg/PrePi/AArch64/ModuleEntryPoint.S | 3 +++
3 files changed, 9 insertions(+)
--
2.17.1
next reply other threads:[~2018-11-16 22:56 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-16 22:55 Ard Biesheuvel [this message]
2018-11-16 22:55 ` [PATCH 1/2] ArmPlatformPkg: clear frame pointer in startup code Ard Biesheuvel
2018-11-16 22:55 ` [PATCH 2/2] ArmVirtPkg/PrePi: " Ard Biesheuvel
2018-11-19 18:53 ` [PATCH 0/2] Clear frame pointer in startup code on AARCH64 systems Laszlo Ersek
2018-11-19 18:56 ` Leif Lindholm
2018-11-19 19:28 ` Ard Biesheuvel
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