From: Mark Brown <broonie@kernel.org>
To: madvenka@linux.microsoft.com
Cc: mark.rutland@arm.com, jpoimboe@redhat.com, jthierry@redhat.com,
catalin.marinas@arm.com, will@kernel.org,
linux-arm-kernel@lists.infradead.org,
live-patching@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH v1 4/4] arm64: Mark stack trace as unreliable if kretprobed functions are present
Date: Thu, 1 Apr 2021 18:23:37 +0100 [thread overview]
Message-ID: <20210401172337.GN4758@sirena.org.uk> (raw)
In-Reply-To: <20210330190955.13707-5-madvenka@linux.microsoft.com>
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On Tue, Mar 30, 2021 at 02:09:55PM -0500, madvenka@linux.microsoft.com wrote:
> From: "Madhavan T. Venkataraman" <madvenka@linux.microsoft.com>
>
> When a kretprobe is active for a function, the function's return address
> in its stack frame is modified to point to the kretprobe trampoline. When
> the function returns, the frame is popped and control is transferred
> to the trampoline. The trampoline eventually returns to the original return
> address.
Reviewed-by: Mark Brown <broonie@kernel.org>
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next prev parent reply other threads:[~2021-04-01 17:25 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <77bd5edeea72d44533c769b1e8c0fea7a9d7eb3a>
2021-03-30 19:09 ` [RFC PATCH v1 0/4] arm64: Implement stack trace reliability checks madvenka
2021-03-30 19:09 ` [RFC PATCH v1 1/4] arm64: Implement infrastructure for " madvenka
2021-04-01 15:27 ` Mark Brown
2021-04-01 17:44 ` Madhavan T. Venkataraman
2021-03-30 19:09 ` [RFC PATCH v1 2/4] arm64: Mark a stack trace unreliable if an EL1 exception frame is detected madvenka
2021-04-01 17:21 ` Mark Brown
2021-03-30 19:09 ` [RFC PATCH v1 3/4] arm64: Detect FTRACE cases that make the stack trace unreliable madvenka
2021-04-01 14:27 ` Mark Brown
2021-04-01 17:43 ` Madhavan T. Venkataraman
2021-04-01 18:28 ` Mark Brown
2021-04-01 18:40 ` Madhavan T. Venkataraman
2021-04-01 18:53 ` Madhavan T. Venkataraman
2021-04-01 19:47 ` Madhavan T. Venkataraman
2021-04-06 11:02 ` Mark Brown
2021-04-01 17:48 ` Madhavan T. Venkataraman
2021-03-30 19:09 ` [RFC PATCH v1 4/4] arm64: Mark stack trace as unreliable if kretprobed functions are present madvenka
2021-04-01 17:23 ` Mark Brown [this message]
2021-04-03 17:01 ` [RFC PATCH v1 0/4] arm64: Implement stack trace reliability checks Josh Poimboeuf
2021-04-04 3:29 ` Madhavan T. Venkataraman
2021-04-05 13:24 ` Masami Hiramatsu
2021-04-05 13:46 ` Madhavan T. Venkataraman
2021-04-05 14:56 ` Madhavan T. Venkataraman
2021-04-05 17:12 ` Madhavan T. Venkataraman
2021-04-05 23:39 ` Masami Hiramatsu
2021-04-05 23:40 ` Masami Hiramatsu
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