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net: macb: fix use after free on rmmod
[ Upstream commit d82d5303c4
]
plat_dev->dev->platform_data is released by platform_device_unregister(),
use of pclk and hclk is a use-after-free. Since device unregister won't
need a clk device we adjust the function call sequence to fix this issue.
[ 31.261225] BUG: KASAN: use-after-free in macb_remove+0x77/0xc6 [macb_pci]
[ 31.275563] Freed by task 306:
[ 30.276782] platform_device_release+0x25/0x80
Suggested-by: Nicolas Ferre <Nicolas.Ferre@microchip.com>
Signed-off-by: Tong Zhang <ztong0001@gmail.com>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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1 changed files with 1 additions and 1 deletions
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@ -111,9 +111,9 @@ static void macb_remove(struct pci_dev *pdev)
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struct platform_device *plat_dev = pci_get_drvdata(pdev);
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struct macb_platform_data *plat_data = dev_get_platdata(&plat_dev->dev);
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platform_device_unregister(plat_dev);
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clk_unregister(plat_data->pclk);
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clk_unregister(plat_data->hclk);
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platform_device_unregister(plat_dev);
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}
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static const struct pci_device_id dev_id_table[] = {
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