]> git.baikalelectronics.ru Git - kernel.git/commit
JFS: Check for NULL before calling posix_acl_equiv_mode()
authorWilliam Burrow <wbkernel@gmail.com>
Thu, 29 May 2014 02:05:55 +0000 (21:05 -0500)
committerDave Kleikamp <dave.kleikamp@oracle.com>
Thu, 29 May 2014 02:19:02 +0000 (21:19 -0500)
commit6bcb5c6f99f2e1ca1a16ab6950bcc592687229cd
treebd183efdd97319715b1054b03341f92cb61173c2
parent000865ca9c4d9217c3df6d716028b78b19583c40
JFS: Check for NULL before calling posix_acl_equiv_mode()

Check for NULL before using the acl in the access type switch
statement. This seems to be consistent with what is done in the JFFS
and ext4 filesystems and with the behaviour of JFS in the 3.13 kernel.
The bug seemed to be introduced in commit 0aa83e0c.

The bug results in a kernel Oops, NULL dereference could not be handled
when accessing a JFS filesystem. The rdiff-backup process seemed to
trigger the bug. See also reported bug #75341:

   https://bugzilla.kernel.org/show_bug.cgi?id=75341

Signed-off-by: William Burrow <wbkernel@gmail.com>
Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
fs/jfs/acl.c