[OpenAFS-devel] Erratic kernel Oops (afsd-1.4.7_pre3 and Linux-2.6.25)

[Gautam Iyer]

--+HP7ph2BbKc20aGI
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
Content-Transfer-Encoding: quoted-printable

Hi All,

I did some testing of OpenAFS-1.4.7_pre3. It runs fine on my system
initially. But I have a sporadic crash of afsd, making it impossible for
me to shutdown or hibernate my system. (I'm testing on Linux-2.6.25, on
a Gentoo system).

Here's the snippet from /var/log/messages (which makes no sense to me):

    BUG: unable to handle kernel paging request at fffffffe
    IP: [<c0334140>] _read_lock+0x0/0x10
    *pde =3D 00005067 *pte =3D 00000000=20
    Oops: 0002 [#1] SMP=20
    Modules linked in: sg sr_mod cdrom usbhid usb_storage scsi_mod b43 mac8=
0211 arc4 ecb ssb rng_core led_class libafs(P) fuse ipv6 tun autofs4 ipt_re=
cent ipt_addrtype xt_multiport xt_mac xt_state xt_tcpudp ipt_REJECT ipt_LOG=
 xt_limit iptable_nat nf_nat nf_conntrack_ipv4 iptable_filter ip_tables xt_=
iprange x_tables nf_conntrack_ftp nf_conntrack snd_pcm_oss snd_mixer_oss sn=
d_seq_oss snd_seq_midi_event snd_seq snd_seq_device sdhci mmc_core loop 825=
0_pnp 8250 serial_core acpi_cpufreq ohci1394 ieee1394 video backlight outpu=
t e1000e wmi ehci_hcd button battery ac uhci_hcd snd_hda_intel snd_pcm snd_=
timer snd_page_alloc snd_hwdep snd soundcore evdev usbcore serio_raw rtc [l=
ast unloaded: mac80211]
   =20
    Pid: 9074, comm: afsd Tainted: P       A (2.6.25 #1)
    EIP: 0060:[<c0334140>] EFLAGS: 00010282 CPU: 0
    EIP is at _read_lock+0x0/0x10
    EAX: fffffffe EBX: 00000010 ECX: 00000002 EDX: 00000000
    ESI: fffffffe EDI: 4808d303 EBP: 4808d303 ESP: f574df80
    DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
    Process afsd (pid: 9074, ti=3Df574c000 task=3Df5b79050 task.ti=3Df574c0=
00)
    Stack: f91357c2 00000010 f574dfb8 f913bdb4 00000000 00000001 f912a8ac 0=
0000000=20
    4808d303 4808d303 4808d303 4808604a 4808d303 00182cf6 00000000 00000001=
=20
    f9182cf6 00000000 00000000 f91788d7 f5b7923c f9182cf6 0000007b f9178630=
=20
    Call Trace:
    [<f91357c2>] afs_osi_TraverseProcTable+0x12/0x70 [libafs]
    [<f913bdb4>] afs_GCPAGs+0x94/0x170 [libafs]
    [<f912a8ac>] afs_Daemon+0x4bc/0x4f0 [libafs]
    logger: Battery 1: discharging, 98%, 03:40:35 remaining
    [<f91788d7>] afsd_launcher+0x2d7/0x6a0 [libafs]
    [<f9178630>] afsd_launcher+0x30/0x6a0 [libafs]
    [<c010583f>] kernel_thread_helper+0x7/0x18
    =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
    Code: 00 00 00 00 8d bc 27 00 00 00 00 fe 00 52 9d c3 8d 74 26 00 8d bc=
 27 00 00 00 00 fe 00 fb c3 8d b6 00 00 00 00 8d bf 00 00 00 00 <f0> 83 28 =
01 79 05 e8 e5 fb ff ff c3 8d 74 26 00 9c 5a fa f0 83=20
    EIP: [<c0334140>] _read_lock+0x0/0x10 SS:ESP 0068:f574df80
    ---[ end trace 63bad5eebb1be4b3 ]---

Any idea what's going on?

Thanks,

GI

--=20
100 THINGS I'D DO IF I EVER BECAME AN EVIL OVERLORD
2. My ventilation ducts will be too small to crawl through.

--+HP7ph2BbKc20aGI
Content-Type: application/pgp-signature
Content-Disposition: inline

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.9 (GNU/Linux)

iEYEARECAAYFAkgI1b8ACgkQ6plSLtsExHGyPwCeNlkf+X+XTTpKTzJGeIhATjCQ
N7oAoK4X2dD5Y2DLJMOvzo3fS4kRHZf8
=wYK6
-----END PGP SIGNATURE-----

--+HP7ph2BbKc20aGI--