From: catalin.marinas@arm.com (Catalin Marinas)
To: linux-arm-kernel@lists.infradead.org
Subject: arm64 Kernel is overly verbose on user faults
Date: Fri, 25 Jul 2014 14:45:21 +0100 [thread overview]
Message-ID: <20140725134520.GJ24268@arm.com> (raw)
In-Reply-To: <CAAqcGHkjgOfs1Yj3SNmjpzE2cdGTh4EQ0njyka6UaeVVnbvQGw@mail.gmail.com>
On Fri, Jul 25, 2014 at 01:22:49PM +0100, Riku Voipio wrote:
> Arm64 kernel dmesg will print out a multiline message if any user
> binary segfaults. We get "unhandled level X translation fault" with
> pr_info, show_pte() with pr_alert and show_regs with default kernel
> level:
I agree show_pte() is not useful for user debugging but I'm not sure
about show_regs(), it may come in handy when debugging some user
application.
We could hide the extra information like show_pte behind a
CONFIG_DEBUG_USER while keeping the short reporting as it currently is
(based on show_unhandled_signals).
--
Catalin
prev parent reply other threads:[~2014-07-25 13:45 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-25 12:22 arm64 Kernel is overly verbose on user faults Riku Voipio
2014-07-25 13:45 ` Catalin Marinas [this message]
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