From: Pavel Skripkin paskripkin@gmail.com
mainline inclusion from mainline-v5.16-rc2 commit 9b5a333272a48c2f8b30add7a874e46e8b26129c category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9FNEY CVE: CVE-2021-47204
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...
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Access to netdev after free_netdev() will cause use-after-free bug. Move debug log before free_netdev() call to avoid it.
Fixes: 7472dd9f6499 ("staging: fsl-dpaa2/eth: Move print message") Signed-off-by: Pavel Skripkin paskripkin@gmail.com Signed-off-by: David S. Miller davem@davemloft.net
Conflicts: drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c [The conflict occurs because the commit 34ff68465a17("dpaa2-eth: Move DPAA2 Ethernet driver from staging to drivers/net") is not merged] Signed-off-by: Zhengchao Shao shaozhengchao@huawei.com --- drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c b/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c index 9329fcad95ac..2f8f1f3f1bcd 100644 --- a/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c +++ b/drivers/staging/fsl-dpaa2/ethernet/dpaa2-eth.c @@ -2632,10 +2632,10 @@ static int dpaa2_eth_remove(struct fsl_mc_device *ls_dev)
fsl_mc_portal_free(priv->mc_io);
- free_netdev(net_dev); - dev_dbg(net_dev->dev.parent, "Removed interface %s\n", net_dev->name);
+ free_netdev(net_dev); + return 0; }