linux-kernel - [PATCH stable 4/5] vfio: do not set FMODE

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Date:   Mon, 17 Oct 2022 12:20:05 -0700
From:   Saeed Mirzamohammadi <saeed.mirzamohammadi@...cle.com>
To:     unlisted-recipients:; (no To-header on input)
Cc:     linux-fsdevel@...r.kernel.org, viro@...iv.linux.org.uk,
        linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        jason@...c4.com, saeed.mirzamohammadi@...cle.com,
        "Jason A. Donenfeld" <Jason@...c4.com>,
        Alex Williamson <alex.williamson@...hat.com>
Subject: [PATCH stable 4/5] vfio: do not set FMODE_LSEEK flag

From: "Jason A. Donenfeld" <Jason@...c4.com>

This file does not support llseek, so don't set the flag advertising it.

Acked-by: Alex Williamson <alex.williamson@...hat.com>
Signed-off-by: Jason A. Donenfeld <Jason@...c4.com>
Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
(cherry picked from commit 54ef7a47f67de9e87022a5310d1e8332af3e2696)
Cc: stable@...r.kernel.org
Signed-off-by: Saeed Mirzamohammadi <saeed.mirzamohammadi@...cle.com>
---
 drivers/vfio/vfio.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c
index 818e47fc0896..93346a76aa7b 100644
--- a/drivers/vfio/vfio.c
+++ b/drivers/vfio/vfio.c
@@ -1490,7 +1490,7 @@ static int vfio_group_get_device_fd(struct vfio_group *group, char *buf)
 	 * Appears to be missing by lack of need rather than
 	 * explicitly prevented.  Now there's need.
 	 */
-	filep->f_mode |= (FMODE_LSEEK | FMODE_PREAD | FMODE_PWRITE);
+	filep->f_mode |= (FMODE_PREAD | FMODE_PWRITE);
 
 	atomic_inc(&group->container_users);
 
-- 
2.31.1