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| author |   Liang Zhen <liang.zhen@intel.com> | 2016-03-22 19:03:54 -0400 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-03-28 07:30:36 -0700 |
| commit | 4e31dad14dfec5746bdaa593db0cf0d8a6736b1c (patch) | |
| tree | f8b6544114cac450bef0b2d49c62bbeb776ea6fd /drivers/staging/lustre/lnet/libcfs/module.c | |
| parent | staging: lustre: libcfs: move comment in libcfs_ioctl (diff) | |
| download | linux-dev-4e31dad14dfec5746bdaa593db0cf0d8a6736b1c.tar.xz linux-dev-4e31dad14dfec5746bdaa593db0cf0d8a6736b1c.zip | |
staging: lustre: libcfs: test if data is NULL
Make sure data is not NULL otherwise we get an oops
when using the IOC_LIBCFS_MARK_DEBUG ioctl.
Signed-off-by: Liang Zhen <liang.zhen@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5435
Reviewed-on: http://review.whamcloud.com/11313
Reviewed-by: Bobi Jam <bobijam@gmail.com>
Reviewed-by: Johann Lombardi <johann.lombardi@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/lustre/lnet/libcfs/module.c')
| -rw-r--r-- | drivers/staging/lustre/lnet/libcfs/module.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/staging/lustre/lnet/libcfs/module.c b/drivers/staging/lustre/lnet/libcfs/module.c index 4c3fe8796545..cce6ce35bd80 100644 --- a/drivers/staging/lustre/lnet/libcfs/module.c +++ b/drivers/staging/lustre/lnet/libcfs/module.c @@ -150,7 +150,7 @@ static int libcfs_ioctl(struct cfs_psdev_file *pfile, unsigned long cmd, * Handled in arch/cfs_module.c */ case IOC_LIBCFS_MARK_DEBUG: - if (!data->ioc_inlbuf1 || + if (!data || !data->ioc_inlbuf1 || data->ioc_inlbuf1[data->ioc_inllen1 - 1] != '\0') { err = -EINVAL; goto out; |