Date: Sun, 18 Feb 2018 13:50:15 -0800 From: Mark Millard <marklmi26-fbsd@yahoo.com> To: Mateusz Guzik <mjguzik@gmail.com> Cc: =?utf-8?Q?Trond_Endrest=C3=B8l?= <Trond.Endrestol@fagskolen.gjovik.no>, FreeBSD Hackers <freebsd-hackers@freebsd.org>, FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: amd64 head -r329465 (non-debug build, but with symbols): "panic: spin lock held too long" during make check-old, reported during a sys_vfork Message-ID: <24563F96-B1A3-48E6-ABE3-D77E0887FFEE@yahoo.com> In-Reply-To: <E9A951DF-914D-4707-8A76-32E627F13EC0@yahoo.com> References: <DA76F62D-3373-47CA-AD95-DE9BA580772B@yahoo.com> <6907E068-C80A-44B8-A8AD-3EF27D52D127@yahoo.com> <20832C61-AA5D-41A6-8BF9-90CC87D17219@yahoo.com> <CAGudoHH5Yz6312QSADiOVx9kd17=WcatEB3qyNjTa5qh_hXASg@mail.gmail.com> <alpine.BSF.2.21.1802182023090.24158@mail.fig.ol.no> <6D47FEC0-7991-4F76-AC31-2CC1E8934521@yahoo.com> <alpine.BSF.2.21.1802182134140.24158@mail.fig.ol.no> <CAGudoHHsHGZYo3Ke2MGhk517oti6gEz0Zk0-jSmXVbbk9Vx83g@mail.gmail.com> <E9A951DF-914D-4707-8A76-32E627F13EC0@yahoo.com>
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On 2018-Feb-18, at 1:46 PM, Mark Millard <marklmi26-fbsd@yahoo.com> = wrote: > On 2018-Feb-18, at 1:33 PM, Mateusz Guzik <mjguzik@gmail.com> wrote: >=20 >> On Sun, Feb 18, 2018 at 9:38 PM, Trond Endrest=C3=B8l < >> Trond.Endrestol@fagskolen.gjovik.no> wrote: >>=20 >>> On Sun, 18 Feb 2018 11:51-0800, Mark Millard wrote: >>>=20 >>>> Note: -r329448 was reverted in -r329461 : racy. >>>=20 >>> True. I got a crash when compiling r329451 while running r329449. >>> I've now booted the r329422 ZFS BE and I'm attempting to build >>> r329529. >>>=20 >>=20 >> Looking around strongly suggests r329448 is the culprit. If you can = verify >> 329447 works fine we are mostly done here. >>=20 >> Note the revision got reverted and different variant got in in = r329531. >>=20 >> That said, if r329447 works then the issue should be already fixed = and in >> particular fresh head should work fine. >=20 > My initial problem was with -r329465, which is after -r329461 reverted > -r329488 . Trond reported in one note that he had problems with > -r329464 , also after -r329488 was reverted. Trond has also reported > -r329449 failed. Dumb typos above: I meant -r329448 instead of -r329488 both times. > I did manage to revert to -r329447 earlier and so far the results > suggests that it works. >=20 > =46rom this I get that -r329449 is the the one that is common to > all the so--far failing combinations. -r329448 is not common to > all of them. =3D=3D=3D Mark Millard marklmi at yahoo.com ( markmi at dsl-only.net is going away in 2018-Feb, late)
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