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Commit 45250339 authored by Pan Bian's avatar Pan Bian Committed by Greg Kroah-Hartman
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wan: pc300too: abort path on failure 




[ Upstream commit 2a39e7aa8a98f777f0732ca7125b6c9668791760 ]

In function pc300_pci_init_one(), on the ioremap error path, function
pc300_pci_remove_one() is called to free the allocated memory. However,
the path is not terminated, and the freed memory will be used later,
resulting in use-after-free bugs. This path fixes the bug.

Signed-off-by: default avatarPan Bian <bianpan2016@163.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
Signed-off-by: default avatarSasha Levin <alexander.levin@microsoft.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent fc0808f0

drivers/net/wan/pc300too.c

+1 −0
Original line number Diff line number Diff line
@@ -347,6 +347,7 @@ static int pc300_pci_init_one(struct pci_dev *pdev, 
	    card->rambase == NULL) {

		pr_err("ioremap() failed\n");

		pc300_pci_remove_one(pdev);

		return -ENOMEM;

	}



	/* PLX PCI 9050 workaround for local configuration register read bug */