On Fri, Jul 30, 2021 at 4:50 PM Chunfeng Yun <chunfeng.yun@xxxxxxxxxxxx> 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@xxxxxxxxxx> > Signed-off-by: Chunfeng Yun <chunfeng.yun@xxxxxxxxxxxx> Reviewed-and-Tested-by: Ikjoon Jang <ikjn@xxxxxxxxxxxx> > --- > 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 >
