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authorLuis Henriques <luis.henriques@canonical.com>2012-07-11 14:02:10 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-07-11 16:04:43 -0700
commita4e08d001f2e50bb8b3c4eebadcf08e5535f02ee (patch)
tree6ab47d995bd4c0a3a388dcbc11ffbe775274d88c /kernel/sys.c
parent6b4fa63a9e5696fa43f25143f104ef0bea642222 (diff)
downloadlinux-a4e08d001f2e50bb8b3c4eebadcf08e5535f02ee.tar.bz2
ocfs2: fix NULL pointer dereference in __ocfs2_change_file_space()
As ocfs2_fallocate() will invoke __ocfs2_change_file_space() with a NULL as the first parameter (file), it may trigger a NULL pointer dereferrence due to a missing check. Addresses http://bugs.launchpad.net/bugs/1006012 Signed-off-by: Luis Henriques <luis.henriques@canonical.com> Reported-by: Bret Towe <magnade@gmail.com> Tested-by: Bret Towe <magnade@gmail.com> Cc: Sunil Mushran <sunil.mushran@oracle.com> Acked-by: Joel Becker <jlbec@evilplan.org> Acked-by: Mark Fasheh <mfasheh@suse.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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