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-rw-r--r--drivers/staging/lustre/lustre/fid/lproc_fid.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/staging/lustre/lustre/fid/lproc_fid.c b/drivers/staging/lustre/lustre/fid/lproc_fid.c
index 39f2aa32e984..0320b6e83576 100644
--- a/drivers/staging/lustre/lustre/fid/lproc_fid.c
+++ b/drivers/staging/lustre/lustre/fid/lproc_fid.c
@@ -85,6 +85,8 @@ ldebugfs_fid_write_common(const char __user *buffer, size_t count,
rc = sscanf(kernbuf, "[%llx - %llx]\n",
(unsigned long long *)&tmp.lsr_start,
(unsigned long long *)&tmp.lsr_end);
+ if (rc != 2)
+ return -EINVAL;
if (!range_is_sane(&tmp) || range_is_zero(&tmp) ||
tmp.lsr_start < range->lsr_start || tmp.lsr_end > range->lsr_end)
return -EINVAL;