From 0db1b84a6df462cee40f9eab24ac4489c654fa51 Mon Sep 17 00:00:00 2001
From: Toomas Soome <tsoome@me.com>
Date: Wed, 2 Sep 2020 19:30:29 +0300
Subject: [PATCH] zvol: unsigned off can not be less than zero

Reviewed-by: Richard Elling <Richard.Elling@RichardElling.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Toomas Soome <tsoome@me.com>
Closes #10867
---
 module/os/freebsd/zfs/zvol_os.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/module/os/freebsd/zfs/zvol_os.c b/module/os/freebsd/zfs/zvol_os.c
index 19018be3b1..ecef075f9e 100644
--- a/module/os/freebsd/zfs/zvol_os.c
+++ b/module/os/freebsd/zfs/zvol_os.c
@@ -626,7 +626,7 @@ zvol_geom_bio_strategy(struct bio *bp)
 	addr = bp->bio_data;
 	resid = bp->bio_length;
 
-	if (resid > 0 && (off < 0 || off >= volsize)) {
+	if (resid > 0 && off >= volsize) {
 		error = SET_ERROR(EIO);
 		goto resume;
 	}