On Tue, Feb 15, 2022 at 10:16:47AM +0800, 3090101217@xxxxxxxxxx wrote: > From: Jing Leng <jleng@xxxxxxxxxxxxx> > > UVC driver doesn't set ssp_descriptors in struct usb_function, > If UVC uses superspeedplus UDC (e.g. cdnsp), when > config_ep_by_speed_and_alt is called, the g->speed is > USB_SPEED_SUPER_PLUS, and f->ssp_descriptors is NULL, > So kernel will access NULL pointer of speed_desc. > > Call trace: > config_ep_by_speed_and_alt+0x3c/0x2a0 [libcomposite] > uvc_function_set_alt+0xd4/0x2e8 [usb_f_uvc] > set_config.constprop.0+0x154/0x3a0 [libcomposite] > composite_setup+0x314/0xb44 [libcomposite] > configfs_composite_setup+0x84/0xb0 [libcomposite] > cdnsp_ep0_std_request+0x25c/0x470 [cdns3] > cdnsp_setup_analyze+0x94/0x25c [cdns3] > cdnsp_handle_event+0xe8/0x23c [cdns3] > cdnsp_thread_irq_handler+0x58/0xe8 [cdns3] > irq_thread_fn+0x2c/0xa0 > irq_thread+0x164/0x280 > kthread+0x128/0x134 > ret_from_fork+0x10/0x40 What does "call trace" here mean? Is this an error? Something else? > > Signed-off-by: Jing Leng <jleng@xxxxxxxxxxxxx> > --- > drivers/usb/gadget/function/f_uvc.c | 14 ++++++++++++-- > 1 file changed, 12 insertions(+), 2 deletions(-) You did not read the information that my bot told you to read, for how to properly version your patches :( Please go back and do so when you resend all of them. Also this is not a patch series? Why not? thanks, greg k-h
