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Date: Mon, 09 May 2011 10:36:33 +0800
From: Eugene Teo <>
CC: "Steven M. Christey" <>
Subject: CVE-2011-1771 kernel: cifs oops when creating file with O_DIRECT

CIFS does not do O_DIRECT, so when you open a file with it, you will 
trigger a NULL pointer dereference. This is a regression introduced with 
the patchset to clean up filehandle management in CIFS. The fix checks 
for a NULL filp->private_data before trying to dereference it.

Introduced by cdff08e7 (v2.6.37-rc1)

Upstream commit

Thanks, Eugene

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