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| author | Erhard Furtner <erhard_f@mailbox.org> | 2019-11-26 02:48:04 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-01-04 19:18:25 +0100 |
| commit | 4c45e9ed2457606b4d0bd5744538a1d81289391f (patch) | |
| tree | c651f5ce387071f6cfe9ed0a8839f34d1598a424 /drivers/of | |
| parent | 1768acaa6d8a0a0ef6b6ac3d3c0467e4ab404840 (diff) | |
| download | linux-4c45e9ed2457606b4d0bd5744538a1d81289391f.tar.gz linux-4c45e9ed2457606b4d0bd5744538a1d81289391f.tar.bz2 linux-4c45e9ed2457606b4d0bd5744538a1d81289391f.zip | |
of: unittest: fix memory leak in attach_node_and_children
[ Upstream commit 2aacace6dbbb6b6ce4e177e6c7ea901f389c0472 ]
In attach_node_and_children memory is allocated for full_name via
kasprintf. If the condition of the 1st if is not met the function
returns early without freeing the memory. Add a kfree() to fix that.
This has been detected with kmemleak:
Link: https://bugzilla.kernel.org/show_bug.cgi?id=205327
It looks like the leak was introduced by this commit:
Fixes: 5babefb7f7ab ("of: unittest: allow base devicetree to have symbol metadata")
Signed-off-by: Erhard Furtner <erhard_f@mailbox.org>
Reviewed-by: Michael Ellerman <mpe@ellerman.id.au>
Reviewed-by: Tyrel Datwyler <tyreld@linux.ibm.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/of')
| -rw-r--r-- | drivers/of/unittest.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c index 92e895d86458..ca7823eef2b4 100644 --- a/drivers/of/unittest.c +++ b/drivers/of/unittest.c @@ -1146,8 +1146,10 @@ static void attach_node_and_children(struct device_node *np) full_name = kasprintf(GFP_KERNEL, "%pOF", np); if (!strcmp(full_name, "/__local_fixups__") || - !strcmp(full_name, "/__fixups__")) + !strcmp(full_name, "/__fixups__")) { + kfree(full_name); return; + } dup = of_find_node_by_path(full_name); kfree(full_name); |