diff options
author | Oleg Drokin <green@linuxhacker.ru> | 2017-05-26 23:40:33 -0400 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-06-14 13:16:22 +0200 |
commit | a365c707d2eecb0aa6f4cbdbedf072ce6b0a336c (patch) | |
tree | cf28cdd235f45ddf5904c4f34736e2cb9760d0fe /drivers/gpu | |
parent | bd2e8f0a72c5608625f9501c07d446f9a48daf7e (diff) |
staging/lustre/lov: remove set_fs() call from lov_getstripe()
commit 0a33252e060e97ed3fbdcec9517672f1e91aaef3 upstream.
lov_getstripe() calls set_fs(KERNEL_DS) so that it can handle a struct
lov_user_md pointer from user- or kernel-space. This changes the
behavior of copy_from_user() on SPARC and may result in a misaligned
access exception which in turn oopses the kernel. In fact the
relevant argument to lov_getstripe() is never called with a
kernel-space pointer and so changing the address limits is unnecessary
and so we remove the calls to save, set, and restore the address
limits.
Signed-off-by: John L. Hammond <john.hammond@intel.com>
Reviewed-on: http://review.whamcloud.com/6150
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3221
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Li Wei <wei.g.li@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/gpu')
0 files changed, 0 insertions, 0 deletions