This is a note to let you know that I've just added the patch titled
mlxsw: minimal: fix potential memory leak in mlxsw_m_linecards_init
to the 6.4-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:
mlxsw-minimal-fix-potential-memory-leak-in-mlxsw_m_l.patch
and it can be found in the queue-6.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 250ee84c4275bb563a0558438e41d7be71238c8c
Author: Zhengchao Shao <shaozhengchao@xxxxxxxxxx>
Date: Fri Jun 30 09:26:47 2023 +0800
mlxsw: minimal: fix potential memory leak in mlxsw_m_linecards_init
[ Upstream commit 08fc75735fda3be97194bfbf3c899c87abb3d0fe ]
The line cards array is not freed in the error path of
mlxsw_m_linecards_init(), which can lead to a memory leak. Fix by
freeing the array in the error path, thereby making the error path
identical to mlxsw_m_linecards_fini().
Fixes: 01328e23a476 ("mlxsw: minimal: Extend module to port mapping with slot index")
Signed-off-by: Zhengchao Shao <shaozhengchao@xxxxxxxxxx>
Reviewed-by: Petr Machata <petrm@xxxxxxxxxx>
Reviewed-by: Ido Schimmel <idosch@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20230630012647.1078002-1-shaozhengchao@xxxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/mellanox/mlxsw/minimal.c b/drivers/net/ethernet/mellanox/mlxsw/minimal.c
index 6b56eadd736e5..6b98c3287b497 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/minimal.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/minimal.c
@@ -417,6 +417,7 @@ static int mlxsw_m_linecards_init(struct mlxsw_m *mlxsw_m)
err_kmalloc_array:
for (i--; i >= 0; i--)
kfree(mlxsw_m->line_cards[i]);
+ kfree(mlxsw_m->line_cards);
err_kcalloc:
kfree(mlxsw_m->ports);
return err;
