Hi, 2017-11-09 3:40 GMT+09:00 Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>: > On Wed, 8 Nov 2017, Philipp Kern wrote: > >> > If the bad access occurred because the uvc driver tried to access a >> > device that had been removed 5 seconds earlier, the most likely >> > explanation is a reference-counting error of some sort. >> >> That sounds reasonable. Is there a way to debug this? RTFM is a fine >> response as well. > > If the problem persists in a 4.13 or 4.14-rc kernel, you could try > adding some debugging printk statements to the uvc driver. Or you > could ask the driver's maintainer for help. I also have a same webcam(C930E) and it is OK with my kernel (4.10.0-28-generic). - connect webcam -> run Cheese --> disconnect while Cheese is running --> It's fine (just spamming kernel warning about sysfs remove - It's already fix in 4.12) Philipp. If you have a reproducible scenario, tell me. I can test more. Jaejoong > > Alan Stern > > -- > To unsubscribe from this list: send the line "unsubscribe linux-usb" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
