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From: Ikjoon Jang <ikjn@chromium.org>
To: Chunfeng Yun <chunfeng.yun@mediatek.com>
Cc: Rob Herring <robh+dt@kernel.org>,
	Mathias Nyman <mathias.nyman@intel.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	linux-usb@vger.kernel.org,
	"moderated list:ARM/Mediatek SoC support" 
	<linux-arm-kernel@lists.infradead.org>,
	"moderated list:ARM/Mediatek SoC support" 
	<linux-mediatek@lists.infradead.org>,
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
	<devicetree@vger.kernel.org>,
	open list <linux-kernel@vger.kernel.org>,
	Eddie Hung <eddie.hung@mediatek.com>
Subject: Re: [PATCH 04/11] usb: xhci-mtk: fix use-after-free of mtk->hcd
Date: Fri, 13 Aug 2021 13:26:30 +0800	[thread overview]
Message-ID: <CAATdQgBeFHJV+=phaEBaXpKwMJygtGVzxJ0yC5hfvijpgwVMAg@mail.gmail.com> (raw)
In-Reply-To: <1627635002-24521-4-git-send-email-chunfeng.yun@mediatek.com>

On Fri, Jul 30, 2021 at 4:50 PM Chunfeng Yun <chunfeng.yun@mediatek.com> wrote:
>
>  BUG: KASAN: use-after-free in usb_hcd_is_primary_hcd+0x38/0x60
>  Call trace:
>   dump_backtrace+0x0/0x3dc
>   show_stack+0x20/0x2c
>   dump_stack+0x15c/0x1d4
>   print_address_description+0x7c/0x510
>   kasan_report+0x164/0x1ac
>   __asan_report_load8_noabort+0x44/0x50
>   usb_hcd_is_primary_hcd+0x38/0x60
>   xhci_mtk_runtime_suspend+0x68/0x148
>   pm_generic_runtime_suspend+0x90/0xac
>   __rpm_callback+0xb8/0x1f4
>   rpm_callback+0x54/0x1d0
>   rpm_suspend+0x4e0/0xc84
>   __pm_runtime_suspend+0xc4/0x114
>   xhci_mtk_probe+0xa58/0xd00
>
> This may happen when probe fails, needn't suspend it synchronously,
> fix it by using pm_runtime_put_noidle().
>
> Reported-by: Pi Hsun <pihsun@google.com>
> Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>

Reviewed-and-Tested-by: Ikjoon Jang <ikjn@chromium.org>


> ---
>  drivers/usb/host/xhci-mtk.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/usb/host/xhci-mtk.c b/drivers/usb/host/xhci-mtk.c
> index 2548976bcf05..cb27569186a0 100644
> --- a/drivers/usb/host/xhci-mtk.c
> +++ b/drivers/usb/host/xhci-mtk.c
> @@ -569,7 +569,7 @@ static int xhci_mtk_probe(struct platform_device *pdev)
>         xhci_mtk_ldos_disable(mtk);
>
>  disable_pm:
> -       pm_runtime_put_sync_autosuspend(dev);
> +       pm_runtime_put_noidle(dev);
>         pm_runtime_disable(dev);
>         return ret;
>  }
> --
> 2.18.0
>

  reply	other threads:[~2021-08-13  5:26 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-30  8:49 [PATCH 01/11] dt-bindings: usb: mtk-xhci: add support property 'tpl-support' Chunfeng Yun
2021-07-30  8:49 ` [PATCH 02/11] dt-bindings: usb: mtk-xhci: add optional property to disable usb2 ports Chunfeng Yun
2021-08-06 20:41   ` Rob Herring
2021-08-11  8:12     ` Chunfeng Yun (云春峰)
2021-07-30  8:49 ` [PATCH 03/11] dt-bindings: usb: mtk-xhci: add compatible for mt8195 Chunfeng Yun
2021-08-06 20:43   ` Rob Herring
2021-08-11  8:02     ` Chunfeng Yun (云春峰)
2021-08-18 14:20       ` Rob Herring
2021-08-19 11:36         ` Chunfeng Yun (云春峰)
2021-07-30  8:49 ` [PATCH 04/11] usb: xhci-mtk: fix use-after-free of mtk->hcd Chunfeng Yun
2021-08-13  5:26   ` Ikjoon Jang [this message]
2021-07-30  8:49 ` [PATCH 05/11] usb: xhci-mtk: add support 'tpl-support' Chunfeng Yun
2021-07-30  8:49 ` [PATCH 06/11] usb: xhci-mtk: support option to disable usb2 ports Chunfeng Yun
2021-07-30  8:49 ` [PATCH 07/11] usb: xhci-mtk: fix issue of out-of-bounds array access Chunfeng Yun
2021-07-30  8:49 ` [PATCH 08/11] usb: xhci-mtk: update fs bus bandwidth by bw_budget_table Chunfeng Yun
2021-08-03  6:05   ` Ikjoon Jang
2021-08-04  5:19     ` Chunfeng Yun
2021-08-04 14:06       ` Ikjoon Jang
2021-08-10  1:45         ` Chunfeng Yun (云春峰)
2021-07-30  8:50 ` [PATCH 09/11] usb: xhci-mtk: check boundary before check tt Chunfeng Yun
2021-08-09  7:32   ` Ikjoon Jang
2021-08-11  8:18     ` Chunfeng Yun (云春峰)
2021-07-30  8:50 ` [PATCH 10/11] usb: xhci-mtk: add a member of num_esit Chunfeng Yun
2021-07-30  8:50 ` [PATCH 11/11] usb: xhci-mtk: modify the SOF/ITP interval for mt8195 Chunfeng Yun
2021-08-06 20:37 ` [PATCH 01/11] dt-bindings: usb: mtk-xhci: add support property 'tpl-support' Rob Herring
2021-08-11  7:54   ` Chunfeng Yun (云春峰)
2021-08-12  2:28   ` Chunfeng Yun (云春峰)

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