Messages in this thread | | | Date | Sat, 24 Sep 2022 10:16:51 +0200 | Subject | Re: INFO: task systemd-udevd:94 blocked for more than 120 seconds. | From | Daniel Lezcano <> |
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Hi Hugh,
On 24/09/2022 09:40, Hugh Dickins wrote: > On Fri, 23 Sep 2022, Borislav Petkov wrote: >> On Fri, Sep 23, 2022 at 12:18:56PM -0700, Nathan Chancellor wrote: >>> I have not seen a stacktrace like this on my machines (although I >>> suspect that is because I don't have CONFIG_DETECT_HUNG_TASK enabled in >>> my configs) but my Honeycomb LX2 hangs while booting after commit >>> 78ffa3e58d93 ("thermal/core: Add a generic thermal_zone_get_trip() >>> function") according to my bisect, which certainly seems like it could >>> be related to the trace you are seeing. >> >> Don't you just love how well our community works - one reports a bug and >> someone else has already bisected it and thus saves one the work?! >> >> :-))) >> >> Thanks Nathan, I can confirm your bisection. The commit above doesn't >> revert cleanly ontop of linux-next so I tried it and the patch before >> it: >> >> 78ffa3e58d93 ("thermal/core: Add a generic thermal_zone_get_trip() function") <- BAD >> 62022c15f627 ("Merge branch 'pm-opp' into linux-next") <- GOOD >> >> so it looks like that one is somehow b0rked. > > Yes, Nathan was alert, and saved me too from bisecting failure to boot > linux-next in another thread. > > And I see from > https://lore.kernel.org/lkml/c85a77a3-409b-3e83-08a7-ac7e1888790d@samsung.com/ > that Marek also found it: and tried to fix it, but found it goes too wide. > > I made a patch of the offending series with > git diff 78ffa3e58d93^ 2b109cffe683 > and then reverted that cleanly from next-20220923: works for me.
Thanks for investigating. I believe I found from where is coming the deadlock. I'll send a fix for that.
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