On 04/06/2015 10:27 AM, Felipe Balbi wrote: > Hi, > > On Mon, Apr 06, 2015 at 10:17:37AM -0500, Nishanth Menon wrote: >> On 04/06/2015 10:01 AM, Mark Brown wrote: >>> On Mon, Apr 06, 2015 at 02:58:29PM +0100, Russell King - ARM Linux wrote: >>>> On Mon, Apr 06, 2015 at 08:53:36AM -0500, Nishanth Menon wrote: >>> >>>>>> at least a description of the problem you're seeing and some attempt at >>> >>>>> Test was a simple boot test. There seems to be a lockdep reported at the >>>>> very least in the log provided (see >>>>> https://github.com/nmenon/kernel-test-logs/blob/next-20150402/omap2plus_defconfig/ldp.txt#L488 >>>>> ). >>> >>>> I think what Mark is trying to say is to include a fuller description of >>>> the problem, and don't expect people to fire up their web browser to get >>>> a basic overview of what the problem is. >>> >>> Yes, indeed. I hadn't actually opened the links, I might've got round >>> to it later on. >>> >>>> My guess is that the problem _appears_ to be that someone's added a call >>>> to debug_check_no_locks_held() into schedule_hrtimeout_range_clock() >>>> without considering what this means. >>> >>>> What it means is that you can't now use usleep_range() from within any >>>> driver probe function - which is absolutely absurd. >>> >>> I can't think of any regulator side changes which might be relevant in >>> that period. It's possible that there might be something in the MFD I >>> guess. >>> >> >> Ran a few tests since my original email.. >> >> 6261b06de565baafa590e58a531a1a5522cea0b6 ("regulator: Defer lookup of >> supply to regulator_get") was the only patch that was introduced in >> the interval. there seems nothing in mfd either. >> >> I still have the following in my log.. trying to further down. > > I noticed a similar warning with AM437x SK > posting intermediate debug results: I did a bisect on the merge commits to identify which tree the regression got introduced, looks like it is the merge from akpm tree - I have not yet looked deeper. b58a6c0b0808 Merge branch 'akpm-current/current' ---> FAIL http://paste.ubuntu.org.cn/2540641 ef31288bdf44 Merge remote-tracking branch 'livepatching/for-next' --> OK -> http://paste.ubuntu.org.cn/2540778 Felipe, could you confirm on your end as well on SK (my fs does not use systemd unfortunately)? -- Regards, Nishanth Menon -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
