From 4e31dad14dfec5746bdaa593db0cf0d8a6736b1c Mon Sep 17 00:00:00 2001 From: Liang Zhen Date: Tue, 22 Mar 2016 19:03:54 -0400 Subject: [PATCH] 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 Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5435 Reviewed-on: http://review.whamcloud.com/11313 Reviewed-by: Bobi Jam Reviewed-by: Johann Lombardi Reviewed-by: Oleg Drokin Signed-off-by: Greg Kroah-Hartman --- drivers/staging/lustre/lnet/libcfs/module.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) 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; -- 2.20.1