From: jamie@shareable.org (Jamie Lokier)
To: linux-arm-kernel@lists.infradead.org
Subject: arm_syscall cacheflush breakage on VIPT platforms
Date: Mon, 28 Sep 2009 13:49:22 +0100 [thread overview]
Message-ID: <20090928124922.GA19778@shareable.org> (raw)
In-Reply-To: <20090928092919.GA30271@localhost>
Imre Deak wrote:
> Hi,
>
> the following test app will cause an unhandled kernel paging request
> on VIPT platforms. The triggering condition is the mmap_sem held by
> thread_func while the main thread performs cache flushing.
>
> Since the likelihood of this to trigger is relatively low, a patch will
> follow that makes similar bugs more visible.
I would expect the likelihood of triggering would be higher for at
least one of Java, Mono, Parrot or any of the modern Javascript
engines. cacheflush is used by anything which generates code, and
mmap is used for loading libraries - things those applications do a lot.
-- Jamie
next prev parent reply other threads:[~2009-09-28 12:49 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-28 9:29 arm_syscall cacheflush breakage on VIPT platforms Imre Deak
2009-09-28 9:41 ` Russell King - ARM Linux
2009-09-28 9:54 ` Imre Deak
2009-09-28 9:59 ` Russell King - ARM Linux
2009-09-28 10:10 ` Imre Deak
2009-09-28 10:28 ` Russell King - ARM Linux
2009-09-28 11:00 ` Imre Deak
2009-09-28 16:54 ` Catalin Marinas
2009-09-28 9:48 ` [PATCH] ARM: add warning for invalid kernel page faults Imre Deak
2009-09-28 9:55 ` Russell King - ARM Linux
2009-09-28 10:00 ` Imre Deak
2009-09-28 10:04 ` Russell King - ARM Linux
2009-09-28 10:16 ` Imre Deak
2009-09-28 10:27 ` Russell King - ARM Linux
2009-09-28 11:01 ` Imre Deak
2009-09-28 11:05 ` [PATCH v2] " Imre Deak
2009-09-28 11:26 ` [PATCH] " Russell King - ARM Linux
2009-09-28 11:33 ` Imre Deak
2009-09-28 11:34 ` Russell King - ARM Linux
2009-09-29 10:07 ` [PATCH v3] ARM: add debug check " Imre Deak
2009-09-28 12:49 ` Jamie Lokier [this message]
2009-09-28 13:16 ` arm_syscall cacheflush breakage on VIPT platforms Imre Deak
2009-09-28 13:19 ` Jamie Lokier
2009-09-28 13:25 ` Russell King - ARM Linux
2009-09-28 13:56 ` Jamie Lokier
2009-09-28 13:31 ` Imre Deak
2009-09-28 13:42 ` Russell King - ARM Linux
2009-09-28 13:55 ` Aguirre Rodriguez, Sergio Alberto
2009-09-28 14:07 ` Jamie Lokier
2009-09-28 14:10 ` Laurent Pinchart
2009-09-28 14:15 ` Jamie Lokier
2009-09-28 14:22 ` Laurent Pinchart
2009-09-28 14:50 ` Jamie Lokier
2009-09-28 16:28 ` Imre Deak
2009-09-28 19:35 ` Jamie Lokier
2009-09-29 9:10 ` Imre Deak
2009-09-28 20:18 ` Steven Walter
2009-09-29 0:50 ` Jamie Lokier
2009-09-28 14:20 ` Bill Gatliff
2009-09-28 13:23 ` Russell King - ARM Linux
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