Patch "qibfs: fix dentry leak" has been added to the 5.15-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

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

    qibfs: fix dentry leak

to the 5.15-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:
     qibfs-fix-dentry-leak.patch
and it can be found in the queue-5.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 42a77b2e7d1b6627afd7832a810b89e2e49444ff
Author: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Date:   Sun Feb 25 23:58:42 2024 -0500

    qibfs: fix dentry leak
    
    [ Upstream commit aa23317d0268b309bb3f0801ddd0d61813ff5afb ]
    
    simple_recursive_removal() drops the pinning references to all positives
    in subtree.  For the cases when its argument has been kept alive by
    the pinning alone that's exactly the right thing to do, but here
    the argument comes from dcache lookup, that needs to be balanced by
    explicit dput().
    
    Fixes: e41d237818598 "qib_fs: switch to simple_recursive_removal()"
    Fucked-up-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
    Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/infiniband/hw/qib/qib_fs.c b/drivers/infiniband/hw/qib/qib_fs.c
index a0c5f3bdc3246..8665e506404f9 100644
--- a/drivers/infiniband/hw/qib/qib_fs.c
+++ b/drivers/infiniband/hw/qib/qib_fs.c
@@ -441,6 +441,7 @@ static int remove_device_files(struct super_block *sb,
 		return PTR_ERR(dir);
 	}
 	simple_recursive_removal(dir, NULL);
+	dput(dir);
 	return 0;
 }