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kernel/irq/irqdomain.c: fix memory leak with using debugfs_lookup()

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commit d83d7ed260 upstream.

When calling debugfs_lookup() the result must have dput() called on it,
otherwise the memory will leak over time.  To make things simpler, just
call debugfs_lookup_and_remove() instead which handles all of the logic
at once.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: stable <stable@kernel.org>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230202151554.2310273-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2023-02-02 16:15:54 +01:00
parent 512d1ed968
commit cf1c917bf1
1 changed files with 1 additions and 1 deletions
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2
kernel/irq/irqdomain.c
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@ -1915,7 +1915,7 @@ static void debugfs_add_domain_dir(struct irq_domain *d)
static void debugfs_remove_domain_dir(struct irq_domain *d)
{
debugfs_remove(debugfs_lookup(d->name, domain_dir));
debugfs_lookup_and_remove(d->name, domain_dir);
}
void __init irq_domain_debugfs_init(struct dentry *root)