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| author | Xiaoke Wang <xkernel.wang@foxmail.com> | 2022-02-18 05:19:39 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-03-02 13:47:58 +0300 |
| commit | be2d38247657e3b9a48725819fa5734da406cc1f (patch) | |
| tree | 79d2c0726e42c8f001a771a64d87c33bcbe6e311 /drivers/net/ethernet/xilinx/ll_temac_main.c | |
| parent | a95ea90deb3071c1ded77a05e91cfebc5238d908 (diff) | |
| download | linux-be2d38247657e3b9a48725819fa5734da406cc1f.tar.xz | |
net: ll_temac: check the return value of devm_kmalloc()
commit b352c3465bb808ab700d03f5bac2f7a6f37c5350 upstream.
devm_kmalloc() returns a pointer to allocated memory on success, NULL
on failure. While lp->indirect_lock is allocated by devm_kmalloc()
without proper check. It is better to check the value of it to
prevent potential wrong memory access.
Fixes: f14f5c11f051 ("net: ll_temac: Support indirect_mutex share within TEMAC IP")
Signed-off-by: Xiaoke Wang <xkernel.wang@foxmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/net/ethernet/xilinx/ll_temac_main.c')
| -rw-r--r-- | drivers/net/ethernet/xilinx/ll_temac_main.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/ethernet/xilinx/ll_temac_main.c b/drivers/net/ethernet/xilinx/ll_temac_main.c index 463094ced104..2ab29efa6b6e 100644 --- a/drivers/net/ethernet/xilinx/ll_temac_main.c +++ b/drivers/net/ethernet/xilinx/ll_temac_main.c @@ -1427,6 +1427,8 @@ static int temac_probe(struct platform_device *pdev) lp->indirect_lock = devm_kmalloc(&pdev->dev, sizeof(*lp->indirect_lock), GFP_KERNEL); + if (!lp->indirect_lock) + return -ENOMEM; spin_lock_init(lp->indirect_lock); } |