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Message-Id: <1422287093-3241-1-git-send-email-gmate.amit@gmail.com> Date: Mon, 26 Jan 2015 16:44:53 +0100 From: Kumar Amit Mehta <gmate.amit@...il.com> To: oleg.drokin@...el.com, andreas.dilger@...el.com Cc: gregkh@...uxfoundation.org, srikrishanmalik@...il.com, rd@...ekdostal.com, tristan@...ong.xyz, HPDD-discuss@...ts.01.org, devel@...verdev.osuosl.org, kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [PATCH] staging: lustre: lustre: mdc: lproc_mdc.c: Fix for potential NULL pointer dereference 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@...il.com> --- drivers/staging/lustre/lustre/mdc/lproc_mdc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/staging/lustre/lustre/mdc/lproc_mdc.c b/drivers/staging/lustre/lustre/mdc/lproc_mdc.c index c420219..c791941 100644 --- a/drivers/staging/lustre/lustre/mdc/lproc_mdc.c +++ b/drivers/staging/lustre/lustre/mdc/lproc_mdc.c @@ -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; -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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