linux-kernel - [PATCH 5.9 014/252] netdevsim: set .owner to THIS

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Date:   Mon, 23 Nov 2020 13:19:24 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Taehee Yoo <ap420073@...il.com>,
        Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH 5.9 014/252] netdevsim: set .owner to THIS_MODULE

From: Taehee Yoo <ap420073@...il.com>

[ Upstream commit a5bbcbf29089a1252c201b1a7fd38151de355db9 ]

If THIS_MODULE is not set, the module would be removed while debugfs is
being used.
It eventually makes kernel panic.

Fixes: 82c93a87bf8b ("netdevsim: implement couple of testing devlink health reporters")
Fixes: 424be63ad831 ("netdevsim: add UDP tunnel port offload support")
Fixes: 4418f862d675 ("netdevsim: implement support for devlink region and snapshots")
Fixes: d3cbb907ae57 ("netdevsim: add ACL trap reporting cookie as a metadata")
Signed-off-by: Taehee Yoo <ap420073@...il.com>
Link: https://lore.kernel.org/r/20201115103041.30701-1-ap420073@gmail.com
Signed-off-by: Jakub Kicinski <kuba@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/net/netdevsim/dev.c         |    2 ++
 drivers/net/netdevsim/health.c      |    1 +
 drivers/net/netdevsim/udp_tunnels.c |    1 +
 3 files changed, 4 insertions(+)

--- a/drivers/net/netdevsim/dev.c
+++ b/drivers/net/netdevsim/dev.c
@@ -94,6 +94,7 @@ static const struct file_operations nsim
 	.open = simple_open,
 	.write = nsim_dev_take_snapshot_write,
 	.llseek = generic_file_llseek,
+	.owner = THIS_MODULE,
 };
 
 static ssize_t nsim_dev_trap_fa_cookie_read(struct file *file,
@@ -186,6 +187,7 @@ static const struct file_operations nsim
 	.read = nsim_dev_trap_fa_cookie_read,
 	.write = nsim_dev_trap_fa_cookie_write,
 	.llseek = generic_file_llseek,
+	.owner = THIS_MODULE,
 };
 
 static int nsim_dev_debugfs_init(struct nsim_dev *nsim_dev)
--- a/drivers/net/netdevsim/health.c
+++ b/drivers/net/netdevsim/health.c
@@ -261,6 +261,7 @@ static const struct file_operations nsim
 	.open = simple_open,
 	.write = nsim_dev_health_break_write,
 	.llseek = generic_file_llseek,
+	.owner = THIS_MODULE,
 };
 
 int nsim_dev_health_init(struct nsim_dev *nsim_dev, struct devlink *devlink)
--- a/drivers/net/netdevsim/udp_tunnels.c
+++ b/drivers/net/netdevsim/udp_tunnels.c
@@ -119,6 +119,7 @@ static const struct file_operations nsim
 	.open = simple_open,
 	.write = nsim_udp_tunnels_info_reset_write,
 	.llseek = generic_file_llseek,
+	.owner = THIS_MODULE,
 };
 
 int nsim_udp_tunnels_info_create(struct nsim_dev *nsim_dev,