Re: port-amd64/52596 (Another netbsd-8 panic)

[Dominik Bialy <dmb%yenn.ulegend.net@localhost>]

The following reply was made to PR port-amd64/52596; it has been noted by GNATS.

From: Dominik Bialy <dmb%yenn.ulegend.net@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: port-amd64-maintainer%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
	netbsd-bugs%netbsd.org@localhost, dmb%yenn.ulegend.net@localhost
Subject: Re: port-amd64/52596 (Another netbsd-8 panic)
Date: Mon, 9 Oct 2017 15:52:58 +0200

 On Mon, Oct 09, 2017 at 01:00:02PM +0000, Kamil Rytarowski wrote:
 > The following reply was made to PR port-amd64/52596; it has been noted by GNATS.
 > 
 > From: Kamil Rytarowski <n54%gmx.com@localhost>
 > To: gnats-bugs%NetBSD.org@localhost
 > Cc: 
 > Subject: Re: port-amd64/52596 (Another netbsd-8 panic)
 > Date: Mon, 9 Oct 2017 14:58:28 +0200
 > 
 >  This is an OpenPGP/MIME signed message (RFC 4880 and 3156)
 >  --tQv6se3kuwJu5afbaaitkaHLbm3ej6EH0
 >  Content-Type: multipart/mixed; boundary="Q3m66g38MJWwicPqkbVeUfD3OpjiGD205";
 >   protected-headers="v1"
 >  From: Kamil Rytarowski <n54%gmx.com@localhost>
 >  To: gnats-bugs%NetBSD.org@localhost
 >  Message-ID: <35eeab5d-5eb1-2c24-5719-4ee284bbd4e0%gmx.com@localhost>
 >  Subject: Re: port-amd64/52596 (Another netbsd-8 panic)
 >  References: <pr-port-amd64-52596%gnats.netbsd.org@localhost>
 >   <20171006053940.1CB755CD8%yenn.ulegend.net@localhost>
 >   <20171009124001.6CD267A2AC%mollari.NetBSD.org@localhost>
 >  In-Reply-To: <20171009124001.6CD267A2AC%mollari.NetBSD.org@localhost>
 >  
 >  --Q3m66g38MJWwicPqkbVeUfD3OpjiGD205
 >  Content-Type: text/plain; charset=utf-8
 >  Content-Language: en-US
 >  Content-Transfer-Encoding: quoted-printable
 >  
 >  On 09.10.2017 14:40, Dominik Bialy wrote:
 >  > The following reply was made to PR port-amd64/52596; it has been noted =
 >  by GNATS.
 >  >=20
 >  > From: Dominik Bialy <dmb%yenn.ulegend.net@localhost>
 >  > To: coypu%sdf.org@localhost
 >  > Cc: Dominik Bialy <dmb%yenn.ulegend.net@localhost>, gnats-bugs%NetBSD.org@localhost
 >  > Subject: Re: port-amd64/52596 (Another netbsd-8 panic)
 >  > Date: Mon, 9 Oct 2017 14:37:47 +0200
 >  >=20
 >  >  On Mon, Oct 09, 2017 at 10:13:34AM +0000, coypu%sdf.org@localhost wrote:
 >  >  > On Mon, Oct 09, 2017 at 10:01:47AM +0200, Dominik Bialy wrote:
 >  >  > > Current sysctls are:
 >  >  > >=20
 >  >  > > yenn# sysctl machdep.xsave_features
 >  >  > > machdep.xsave_features =3D 0
 >  >  > > yenn# sysctl machdep.fpu_save
 >  >  > > machdep.fpu_save =3D 1
 >  >  > >=20
 >  >  > > I'll try applying the patch today and building the kernel.
 >  >  >=20
 >  >  > sorry, I misread the code, it shouldn't make a functional difference=
 >  
 >  >  > either way.
 >  >  >=20
 >  >  > do you have a coredump in /var/crash?
 >  >  > can you:
 >  >  > gunzip netbsd.3.core.gz
 >  >  > gunzip netbsd.3.gz
 >  >  > crash -M netbsd.3.core -N netbsd.3
 >  >  >=20
 >  >  > crash> dmesg
 >  >  > (only to confirm it died at the same spot)
 >  >  > crash> examine x86_xsave_features
 >  >  > crash> bt
 >  > =20
 >  >  I found one coredump from Sep 23 (sources were
 >  >  dated around Sep 15.)
 >  > =20
 >  >  fatal privileged instruction fault in supervisor mode
 >  >  trap type 0 code 0 rip 0xffffffff80224a52 cs 0x8 rflags 0x10016 cr2 0x=
 >  75ba90c36d60 ilevel 0x8 rsp 0xfffffe804057
 >  >  bea8
 >  >  curlwp 0xfffffe81318c2720 pid 391.2 lowest kstack 0xfffffe80405792c0
 >  >  panic: trap
 >  >  cpu1: Begin traceback...
 >  >  vpanic() at netbsd:vpanic+0x140
 >  >  snprintf() at netbsd:snprintf
 >  >  startlwp() at netbsd:startlwp
 >  >  alltraps() at netbsd:alltraps+0x96
 >  >  fpudna() at netbsd:fpudna+0x61
 >  >  cpu1: End traceback...
 >  > =20
 >  >  dumping to dev 18,1 (offset=3D132519, size=3D1032011):
 >  >  dump
 >  >  crash> examine x86_xsave_features
 >  >  x86_xsave_features:     160b78a0
 >  
 >  Looks like trash..
 >  
 >  Please try:
 >  examine x86_fpu_save_size
 >  examine x86_fpu_save
 >  examine i386_nocpuid_cpus
 >  
 >  (checking if the stack has been damaged)
 
 yenn# crash -M netbsd.6.core -N netbsd.6
 Crash version 8.0_BETA, image version 8.0_BETA.
 System panicked: trap
 Backtrace from time of crash is available.
 crash> examine x86_fpu_save_size
 x86_fpu_save_size:      200
 crash> examine x86_fpu_save
 x86_fpu_save:   1
 crash> examine i386_nocpuid_cpus
 i386_nocpuid_cpus:      1
 crash>
 
 >  
 >  >  crash> bt
 >  >  _KERNEL_OPT_NARCNET() at 0
 >  >  _KERNEL_OPT_ACPI_SCANPCI() at _KERNEL_OPT_ACPI_SCANPCI+0x7
 >  >  vpanic() at vpanic+0x149
 >  >  snprintf() at snprintf
 >  >  startlwp() at startlwp
 >  >  calltrap() at calltrap+0x11
 >  >  fpudna() at fpudna+0x61
 >  >  crash>
 >  > =20
 >  >=20
 >  
 >  
 >  
 >  --Q3m66g38MJWwicPqkbVeUfD3OpjiGD205--
 >  
 >  --tQv6se3kuwJu5afbaaitkaHLbm3ej6EH0
 >  Content-Type: application/pgp-signature; name="signature.asc"
 >  Content-Description: OpenPGP digital signature
 >  Content-Disposition: attachment; filename="signature.asc"
 >  
 >  -----BEGIN PGP SIGNATURE-----
 >  Version: GnuPG v2
 >  
 >  iQIcBAEBCAAGBQJZ23J7AAoJEEuzCOmwLnZsgd4P/14ZY9CY1o2WTGneVG//Ai9U
 >  voBxogER+xwyI+4gChaMwZCixIpQ3fLJnQd89EHOcLWuVTVvFroiWtdFr+uhkSTH
 >  lG6xhAHvVWvv+UX3+BqoRNZVsSQfFWNpbWfUpS+71mKlNkWr/gKIKEOt3bl6+mEG
 >  kTtRlU+vGbaCVv90UYtJMfiTIoBKCSC/EDLTNnpfU7i0Rc+gUEBmaHj1yK5G1l5F
 >  3GxX2yjHW6yTIp9mYrd8Qo4gJ5SHBaTfo0lNxWX5YUKbGYhH5VqeIG/mkSpGlzUr
 >  uiRX3E2YWI7wpuAYDDxeAA9jhPTK0DJWDIGvmL7c3Renj7SdXUN2PVMR+w+cegBQ
 >  k6vPHUYzc5+OMj2azgVt1KGhf01i+PCPsQs1bforCQ1Q1CUO02oZuxRg+O97m2ph
 >  BKECkosmrN8JL3llfi54MI0JEo4mEvhjEswc5pToaMUWYJcEwzSaiMfgjX/eg2EQ
 >  oRumz1kR8pPkKAxHbwmb3G2L6fBo+iYx6RrQuWCXdjTCKaGe6LWbmd177c9rhBj7
 >  5xD8zXLhQ3dnLibtCSq8oKKNCWO2D2eO4v/bJx5I9axVNpOo8DYAz/muBtGiaT9y
 >  VCjDoDCa3+nXu8+WznmXp/iaKVeBkX8atearj4gpJC6xTjyi7HbDKw7Up8TLlKae
 >  isK0kEBa1v1SC7dpb+ZK
 >  =ylKn
 >  -----END PGP SIGNATURE-----
 >  
 >  --tQv6se3kuwJu5afbaaitkaHLbm3ej6EH0--
 >