From: Siddha, Suresh B <suresh.b.siddha@intel.com>
Date: Sat, 16 Jul 2005 02:17:44 +0000 (-0700)
Subject: [PATCH] x86_64: TASK_SIZE fixes for compatibility mode processes
X-Git-Tag: v2.6.13-rc4~91
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9fb1759a3102c26cd8f64254a7c3e532782c2bb8;p=pandora-kernel.git

[PATCH] x86_64: TASK_SIZE fixes for compatibility mode processes

A malicious 32bit app can have an elf section at 0xffffe000.  During
exec of this app, we will have a memory leak as insert_vm_struct() is
not checking for return value in syscall32_setup_pages() and thus not
freeing the vma allocated for the vsyscall page.

Check the return value and free the vma incase of failure.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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