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xfs: Add test for CVE-2017-14340

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Verify kernel doesn't panic when user attempts to set realtime flags
on non-realtime FS, using kernel compiled with CONFIG_XFS_RT.
Unpatched kernels will panic during this test.  Kernels not compiled
with CONFIG_XFS_RT should pass test.

This bug was fixed via commit b31ff3cdf540 ("xfs:
XFS_IS_REALTIME_INODE() should be false if no rt device present") on
the main kernel tree.

[eguan: don't assume fixed position when grepping 't' and add some
comments about why we do this, also remove testfile after test]

Signed-off-by: Richard Wareing <rwareing@fb.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>
This commit is contained in:
Richard Wareing
2017-09-21 19:34:46 -07:00
committed by Eryu Guan
parent a21f34f87f
commit ea817058b0
3 changed files with 88 additions and 0 deletions
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tests/xfs/431.out
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QA output created by 431
wrote 1048576/1048576 bytes at offset 0
XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)