linux-kernel - [PATCH 5.15 070/171] cifs: Fix crash on unload of cifs

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Date:   Mon, 13 Dec 2021 10:29:45 +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,
        Vincent Whitchurch <vincent.whitchurch@...s.com>,
        Ronnie Sahlberg <lsahlber@...hat.com>,
        "Paulo Alcantara (SUSE)" <pc@....nz>,
        Steve French <stfrench@...rosoft.com>
Subject: [PATCH 5.15 070/171] cifs: Fix crash on unload of cifs_arc4.ko

From: Vincent Whitchurch <vincent.whitchurch@...s.com>

commit 51a08bdeca27988a17c87b87d8e64ffecbd2a172 upstream.

The exit function is wrongly placed in the __init section and this leads
to a crash when the module is unloaded.  Just remove both the init and
exit functions since this module does not need them.

Fixes: 71c02863246167b3d ("cifs: fork arc4 and create a separate module...")
Signed-off-by: Vincent Whitchurch <vincent.whitchurch@...s.com>
Acked-by: Ronnie Sahlberg <lsahlber@...hat.com>
Acked-by: Paulo Alcantara (SUSE) <pc@....nz>
Cc: stable@...r.kernel.org # 5.15
Signed-off-by: Steve French <stfrench@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 fs/smbfs_common/cifs_arc4.c |   13 -------------
 1 file changed, 13 deletions(-)

--- a/fs/smbfs_common/cifs_arc4.c
+++ b/fs/smbfs_common/cifs_arc4.c
@@ -72,16 +72,3 @@ void cifs_arc4_crypt(struct arc4_ctx *ct
 	ctx->y = y;
 }
 EXPORT_SYMBOL_GPL(cifs_arc4_crypt);
-
-static int __init
-init_smbfs_common(void)
-{
-	return 0;
-}
-static void __init
-exit_smbfs_common(void)
-{
-}
-
-module_init(init_smbfs_common)
-module_exit(exit_smbfs_common)