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staging: lustre: lustre: mdc: lproc_mdc.c: Fix for potential NULL pointer dereference

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In mdc_kuc_write(), OBD_ALLOC(lh, len) may leave 'lh' to NULL as kmalloc
may fail to allocate memory. This fix adds a check to avoid, dereferencing
a NULL pointer.

Signed-off-by: Kumar Amit Mehta <gmate.amit@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Kumar Amit Mehta 2015-01-26 16:44:53 +01:00 committed by Greg Kroah-Hartman
parent 1e3e981ad5
commit c1f79c74e2
1 changed files with 2 additions and 0 deletions
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2
drivers/staging/lustre/lustre/mdc/lproc_mdc.c
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@ -106,6 +106,8 @@ static ssize_t mdc_kuc_write(struct file *file,
/* for mockup below */ 2 * cfs_size_round(sizeof(*hai));
OBD_ALLOC(lh, len);
if (!lh)
return -ENOMEM;
lh->kuc_magic = KUC_MAGIC;
lh->kuc_transport = KUC_TRANSPORT_HSM;