On Fri, Apr 13, 2018 at 12:34:00PM +0530, Harsh Shandilya wrote: > On 13 April 2018 11:51:28 AM IST, Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > >On Fri, Apr 13, 2018 at 08:12:31AM +0530, Harsh Shandilya wrote: > >> On 13 April 2018 5:59:51 AM IST, Greg Hackmann <ghackmann@xxxxxxxxxx> > >wrote: > >> >Pixel 2 field testers reported that when they tried to reboot their > >> >phones with some USB devices plugged in, the reboot would get wedged > >> >and > >> >eventually trigger watchdog reset. Once the Pixel kernel team found > >a > >> >reliable repro case, they narrowed it down to this commit's 4.4.y > >> >backport. Reverting the change made the issue go away. > >> > >> Are you allowed to make the repro steps public? I'm writing this from > >> a walleye and would be grateful if I could test for this in the > >> modifed tree I'm running atm. -- > > > >I was told the steps are pretty simple: > > - reboot the phone a lot > >eventually it will hang. There's a fix in the code aurora kernel tree > >for this that they never sent upstream for some odd reason (they sent > >the first patch, why not the second?) > > > >I'll go revert this for now, thanks for the patch! > > > >greg k-h > > That'd make sense, I only tried rebooting like five times before I had to run for a class. > > As far as CAF is concerned, I feel the not submitting upstream, > working extra to write patches which have usually better variants > already upstream, seems to be common. All USB changes were dropped > when they merged kernel-common into msm-3.18 with no real explanation > which has been an annoyance more than once during merging -stable in > my fork of msm-3.18. While I understand their situation of maintaining > upwards of 5 million lines of code not upstream, it still feels sloppy > to not merge stable updates and do extra work instead. /* End rant */ CAF fixed this back on Feb 1 in their tree, yet did not send that upstream, or to anyone else: https://source.codeaurora.org/quic/la/kernel/msm-4.4/commit/?h=LV.HB.1.1.5-03810-8x96.0&id=a7a5307ee04ad349d365ad50f304605a9cd9bd0a Feel free to rant some more, I'm going to go revert the original upstream patch as that is half-completed, and obviously broken :( thanks, greg k-h -- 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
