diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-02-02 15:19:19 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2023-02-08 21:42:12 +1100 |
| commit | b505063910c134778202dfad9332dfcecb76bab3 (patch) | |
| tree | 080865e8f27e8e944a088bbdb07f2e0cb6786f9e /arch/powerpc/kernel/iommu.c | |
| parent | dcfecb989afdf9101ee42e2adf04756a2ea4819d (diff) | |
powerpc/iommu: fix memory leak with using debugfs_lookup()
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.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20230202141919.2298821-1-gregkh@linuxfoundation.org
Diffstat (limited to 'arch/powerpc/kernel/iommu.c')
| -rw-r--r-- | arch/powerpc/kernel/iommu.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c index caebe1431596..ee95937bdaf1 100644 --- a/arch/powerpc/kernel/iommu.c +++ b/arch/powerpc/kernel/iommu.c @@ -67,11 +67,9 @@ static void iommu_debugfs_add(struct iommu_table *tbl) static void iommu_debugfs_del(struct iommu_table *tbl) { char name[10]; - struct dentry *liobn_entry; sprintf(name, "%08lx", tbl->it_index); - liobn_entry = debugfs_lookup(name, iommu_debugfs_dir); - debugfs_remove(liobn_entry); + debugfs_lookup_and_remove(name, iommu_debugfs_dir); } #else static void iommu_debugfs_add(struct iommu_table *tbl){} |