From: Peter Horton <pdh@colonel-panic.org>
To: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Subject: Possible shared mapping bug in 2.4.23 (at least MIPS/Sparc)
Date: Sat, 13 Dec 2003 11:41:34 +0000 [thread overview]
Message-ID: <20031213114134.GA9896@skeleton-jack> (raw)
The current MIPS 2.4 kernel (from CVS) currently allows fixed shared
mappings to violate D-cache aliasing constraints.
The check for illegal fixed mappings is done in
arch_get_unmapped_area(), but these mappings are granted in
get_unmapped_area() and arch_get_unmapped_area() is never called.
A quick look at sparc and sparc64 seem to show the same problem.
P.
next reply other threads:[~2003-12-13 11:41 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-12-13 11:41 Peter Horton [this message]
2003-12-13 16:05 ` Possible shared mapping bug in 2.4.23 (at least MIPS/Sparc) Ralf Baechle
2003-12-13 18:08 ` Peter Horton
2003-12-13 22:26 ` Jamie Lokier
2003-12-14 1:41 ` Linus Torvalds
2003-12-14 4:20 ` Jamie Lokier
2003-12-14 10:38 ` Peter Horton
2003-12-14 17:16 ` Jamie Lokier
2003-12-25 13:03 ` Ralf Baechle
2003-12-14 18:05 ` Linus Torvalds
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