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Subject2.6.30-rc6: i915: Xserver crash - oops after rmmod
Hi,

I use s2disk on a daily basis, and I recently tried to switch to UXA in
xorg.conf in anticipation of KMS, for my Lenovo W500 with the integrated
Intel card active:
00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series
Chipset Integrated Graphics Controller (rev 07)

Resuming worked just fine the last couple of days using UXA but I
admittedly frequently update Mesa/Xorg/git kernel.

Tonight the X server crashed on resume and I was placed back at the KDM
prompt. I thought "$%^&$ the one time I actually had real applications
open! I am switching back to EXA!", so I changed AccelMethod back to
"exa" and decided to unload all i915 modules - i915, drm, and video.

The latter unexpectedly returned "Killed", although none of these
modules showed any 'used by' count.

I then did 'init 5' upon which I had a black screen, and decided to
reboot. I then noticed that the following OOPS occurred prior to the
reboot, likely the result of my "rmmod drm" or "rmmod output".

May 18 19:35:56 linux-7vph kernel: Restarting tasks ... done.
May 18 19:36:07 linux-7vph kdm[2882]: X server for display :0 terminated
unexpectedly
May 18 19:36:18 linux-7vph bonobo-activation-server (niella-10440):
could not associate with desktop session: Failed to connect to socket
/tmp/dbus-snlESQlAbp: Connection refused
May 18 19:36:32 linux-7vph kernel: [drm:gm45_get_vblank_counter] *ERROR*
trying to get vblank count for disabled pipe 0
May 18 19:37:01 linux-7vph kernel: [drm:gm45_get_vblank_counter] *ERROR*
trying to get vblank count for disabled pipe 0
May 18 19:37:03 linux-7vph init: Switching to runlevel: 3
May 18 19:37:34 linux-7vph kernel: mtrr: MTRR 4 not used
May 18 19:37:34 linux-7vph kernel: [drm] Module unloaded
May 18 19:37:47 linux-7vph kernel: BUG: unable to handle kernel NULL
pointer dereference at 00000010
May 18 19:37:47 linux-7vph kernel: IP: [<c02fbbef>] klist_put+0x12/0x6f
May 18 19:37:47 linux-7vph kernel: *pde = 00000000
May 18 19:37:47 linux-7vph kernel: Oops: 0000 [#1] SMP
May 18 19:37:47 linux-7vph kernel: last sysfs file:
/sys/devices/pci0000:00/0000:00:1c.1/0000:03:00.0/rfkill/rfkill1/state
May 18 19:37:47 linux-7vph kernel: Modules linked in: usbhid hid tun
i2c_algo_bit af_packet ip6t_LOG xt_tcpudp xt_pkttype ipt_LOG xt_limit
snd_pcm_oss snd_mixer_oss snd_seq binfmt_misc ip6t_REJECT
nf_conntrack_ipv6 ip6table_raw xt_NOTRACK ipt_REJECT xt_state
cpufreq_conservative cpufreq_userspace iptable_raw cpufreq_powersave
iptable_filter acpi_cpufreq speedstep_lib ip6table_mangle
nf_conntrack_netbios_ns nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4
ip_tables ip6table_filter ip6_tables x_tables ipv6 microcode fuse loop
dm_mod snd_usb_audio snd_usb_lib snd_rawmidi snd_seq_device arc4 ecb
iwlagn iwlcore thinkpad_acpi rfkill led_class snd_hda_codec_conexant
video(-) mac80211 ohci1394 battery ac output nvram ieee1394 rtc_cmos
snd_hda_intel wmi snd_hda_codec rtc_core button snd_hwdep snd_pcm
snd_timer snd i2c_i801 soundcore iTCO_wdt snd_page_alloc
iTCO_vendor_support intel_agp cfg80211 rtc_lib e1000e i2c_core agpgart
sr_mod cdrom joydev sg ehci_hcd uhci_hcd sd_mod usbcore ext4 jbd2 crc16
edd ext3 mbcache jbd fan ahci l
May 18 19:37:47 linux-7vph kernel: ibata scsi_mod thermal processor
[last unloaded: drm]
May 18 19:37:47 linux-7vph kernel:
May 18 19:37:47 linux-7vph kernel: Pid: 10594, comm: rmmod Not tainted
(2.6.30-rc6-pae #47) 40622XG
May 18 19:37:47 linux-7vph kernel: EIP: 0060:[<c02fbbef>] EFLAGS:
00010246 CPU: 1
May 18 19:37:47 linux-7vph kernel: EIP is at klist_put+0x12/0x6f
May 18 19:37:47 linux-7vph kernel: EAX: f5c281f8 EBX: 00000001 ECX:
00000004 EDX: 00000001
May 18 19:37:47 linux-7vph kernel: ESI: 00000000 EDI: f5c281f8 EBP:
f44adef0 ESP: f44adedc
May 18 19:37:47 linux-7vph kernel: DS: 007b ES: 007b FS: 00d8 GS: 0033
SS: 0068
May 18 19:37:47 linux-7vph kernel: Process rmmod (pid: 10594,
ti=f44ac000 task=f5c7f0b0 task.ti=f44ac000)
May 18 19:37:47 linux-7vph kernel: Stack:
May 18 19:37:47 linux-7vph kernel: c0134d30 00000000 00000002 00000000
c04297b4 f44adef8 c02fbc77 f44adf18
May 18 19:37:47 linux-7vph kernel: c02fbd7b c04376d0 c04376d0 f5c281f8
f5c7f0b0 00000000 f85e08c0 f44adf2c
May 18 19:37:47 linux-7vph kernel: c026d83e 00000000 f85e08c0 00000000
f44adf3c c026e6e1 f85e0980 bf994ca0
May 18 19:37:47 linux-7vph kernel: Call Trace:
May 18 19:37:47 linux-7vph kernel: [<c0134d30>] ? insert_work+0x78/0x81
May 18 19:37:47 linux-7vph kernel: [<c02fbc77>] ? klist_del+0xd/0xf
May 18 19:37:47 linux-7vph kernel: [<c02fbd7b>] ? klist_remove+0x58/0x81
May 18 19:37:47 linux-7vph kernel: [<c026d83e>] ?
bus_remove_driver+0x5c/0x89
May 18 19:37:47 linux-7vph kernel: [<c026e6e1>] ?
driver_unregister+0x2a/0x2e
May 18 19:37:47 linux-7vph kernel: [<c0226253>] ?
acpi_bus_unregister_driver+0xd/0xf
May 18 19:37:47 linux-7vph kernel: [<f85de371>] ?
cleanup_module+0xd/0x25 [video]
May 18 19:37:47 linux-7vph kernel: [<c01477d5>] ?
sys_delete_module+0x18a/0x1e3
May 18 19:37:47 linux-7vph kernel: [<c017b9be>] ? remove_vma+0x46/0x4c
May 18 19:37:47 linux-7vph kernel: [<c017c5d2>] ? do_munmap+0x20a/0x225
May 18 19:37:47 linux-7vph kernel: [<c01029d4>] ?
sysenter_do_call+0x12/0x28
May 18 19:37:47 linux-7vph kernel: Code: 90 83 7d f0 00 74 09 85 ff 74
05 89 f8 ff 55 f0 8b 46 04 5a 5b 5e 5f 5d c3 55 89 e5 57 89 c7 56 53 89
d3 83 ec 08 8b 30 83 e6 fe <8b> 46 10 89 45 f0 89 f0 e8 0b f4 00 00 84
db 74 17 f6 07 01 74
May 18 19:37:47 linux-7vph kernel: EIP: [<c02fbbef>] klist_put+0x12/0x6f
SS:ESP 0068:f44adedc
May 18 19:37:47 linux-7vph kernel: CR2: 0000000000000010
May 18 19:37:47 linux-7vph kernel: ---[ end trace c76e3f0980caa485 ]---
May 18 19:38:41 linux-7vph sudo: niella : TTY=tty2 ; PWD=/home/niella
; USER=root ; COMMAND=/sbin/reboot

Xorg.0.log contained the following at more or less the same time of the
X crash:
X Protocol Version 11, Revision 0
Build Operating System: openSUSE SUSE LINUX
Current Operating System: Linux linux-7vph 2.6.30-rc6-pae #47 SMP Mon
May 18 00:42:36 SAST 2009 i686
Build Date: 16 May 2009 11:20:59AM

Before reporting problems, check http://wiki.x.org
to make sure that you have the latest version.
Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/Xorg.0.log", Time: Mon May 18 19:36:14 2009
(==) Using config file: "/etc/X11/xorg.conf"
Setting master
/org/freedesktop/Hal/devices/computer
xrandr for VGA: new mode 1600x1024 136.36 1600 1704 1872 2144 1024 1025
1028 1060
X Error of failed request: BadName (named color or font does not exist)
Major opcode of failed request: 149 (RANDR)
Minor opcode of failed request: 16 (RRCreateMode)
Serial number of failed request: 23
Current serial number in output stream: 23
Dropping master
Setting master
Dropping master

Regards,
Niel



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