Patch "afs: Add missing afs_put_cell()" has been added to the 4.15-stable tree

This is a note to let you know that I've just added the patch titled

afs: Add missing afs_put_cell()

to the 4.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
afs-add-missing-afs_put_cell.patch
and it can be found in the queue-4.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: David Howells <[email protected]>
Date: Tue, 6 Feb 2018 09:26:27 +0000
Subject: afs: Add missing afs_put_cell()

From: David Howells <[email protected]>

commit e44150157f42219fa5c074588efdb31ccfb197fc upstream.

afs_alloc_volume() needs to release the cell ref it obtained in the case of an error. Fix this by adding an afs_put_cell() call into the error path.

This can triggered when a lookup for a cell in a dynamic root or an autocell mount returns an error whilst trying to look up the server (such as ENOMEDIUM). This results in an assertion failure oops when the module is unloaded due to outstanding refs on a cell record.

---
 fs/afs/volume.c |    1 +
 1 file changed, 1 insertion(+)

@@ -102,6 +102,7 @@ static struct afs_volume *afs_alloc_volu
 error_2:
 	afs_put_serverlist(params->net, slist);
 error_1:
+	afs_put_cell(params->net, volume->cell);
 	kfree(volume);
 error_0:
 	return ERR_PTR(ret);

Patches currently in stable-queue which might be from [email protected] are

queue-4.15/afs-fix-missing-cursor-clearance.patch queue-4.15/afs-add-missing-afs_put_cell.patch queue-4.15/afs-need-to-clear-responded-flag-in-addr-cursor.patch queue-4.15/afs-fix-server-list-handling.patch