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Date: Tue, 7 Jun 2022 13:58:04 -0400 From: Sasha Levin <sashal@...nel.org> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org Cc: Zhen Ni <nizhen@...ontech.com>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Sasha Levin <sashal@...nel.org>, ok@...ecdesign.ee, linux-usb@...r.kernel.org Subject: [PATCH AUTOSEL 5.10 09/38] USB: host: isp116x: check return value after calling platform_get_resource() From: Zhen Ni <nizhen@...ontech.com> [ Upstream commit 134a3408c2d3f7e23eb0e4556e0a2d9f36c2614e ] It will cause null-ptr-deref if platform_get_resource() returns NULL, we need check the return value. Signed-off-by: Zhen Ni <nizhen@...ontech.com> Link: https://lore.kernel.org/r/20220302033716.31272-1-nizhen@uniontech.com Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Signed-off-by: Sasha Levin <sashal@...nel.org> --- drivers/usb/host/isp116x-hcd.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/usb/host/isp116x-hcd.c b/drivers/usb/host/isp116x-hcd.c index 3055d9abfec3..3e5c54742bef 100644 --- a/drivers/usb/host/isp116x-hcd.c +++ b/drivers/usb/host/isp116x-hcd.c @@ -1541,10 +1541,12 @@ static int isp116x_remove(struct platform_device *pdev) iounmap(isp116x->data_reg); res = platform_get_resource(pdev, IORESOURCE_MEM, 1); - release_mem_region(res->start, 2); + if (res) + release_mem_region(res->start, 2); iounmap(isp116x->addr_reg); res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - release_mem_region(res->start, 2); + if (res) + release_mem_region(res->start, 2); usb_put_hcd(hcd); return 0; -- 2.35.1
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