On Thu, 20 Jan 2011 11:49:18 +0100, Toralf Förster <toralf.foerster@xxxxxx> wrote: > Hello, > > after the following BUG the system crashed : > ... > 2011-01-12T10:31:59.597+01:00 n22 kernel: kernel BUG at drivers/gpu/drm/i915/i915_gem.c:4190! > 2011-01-12T10:31:59.597+01:00 n22 kernel: invalid opcode: 0000 [#1] SMP > 2011-01-12T10:31:59.597+01:00 n22 kernel: last sysfs file: /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq > 2011-01-12T10:31:59.597+01:00 n22 kernel: Modules linked in: bridge stp llc ipt_MASQUERADE ipt_REJECT xt_recent xt_tcpudp nf_conntrack_ftp xt_state > xt_limit ipt_LOG iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4 iptable_filter xt_owner xt_multiport ip_tables x_tables snd_seq_oss > snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss af_packet fuse hdaps input_polldev fbcon font bitblit softcursor acpi_cpufreq mperf > dm_mod arc4 ecb crypto_blkcipher snd_hda_codec_conexant cryptomgr i915 snd_hda_intel drm_kms_helper aead crypto_algapi usbhid hid thinkpad_acpi > snd_hda_codec snd_pcm drm iwlagn fb hwmon uhci_hcd ehci_hcd iwlcore fbdev snd_timer snd usbcore processor 8250_pci sr_mod e1000e intel_agp soundcore > i2c_algo_bit wmi cfbcopyarea cfbimgblt i2c_i801 battery ac psmouse mac80211 cdrom evdev nvram intel_gtt agpgart video button i2c_core snd_page_alloc cfbfillrect > thermal output nls_base cfg80211 rfkill 8250 serial_core [last unloaded: microcode] > 2011-01-12T10:31:59.597+01:00 n22 kernel: > 2011-01-12T10:31:59.597+01:00 n22 kernel: Pid: 5057, comm: X Not tainted 2.6.37 #4 6474B84/6474B84 > 2011-01-12T10:31:59.597+01:00 n22 kernel: EIP: 0060:[<f89f9f6e>] EFLAGS: 00013246 CPU: 0 > 2011-01-12T10:31:59.597+01:00 n22 kernel: EIP is at i915_gem_object_pin+0x15e/0x190 [i915] > 2011-01-12T10:31:59.597+01:00 n22 kernel: EAX: 0003c47c EBX: f4cd95c0 ECX: 00000000 EDX: 0003c000 > 2011-01-12T10:33:34.621+01:00 n22 syslog-ng[2754]: The current log file has a mismatching size/inode information, restarting from the beginning; > filename='/proc/kmsg' > 2011-01-12T10:33:34.648+01:00 n22 kernel: Linux version 2.6.37 (root@n22) (gcc version 4.4.4 (Gentoo 4.4.4-r2 p1.2, pie-0.4.5) ) #4 SMP Sun Jan 9 16:29:30 CET It's an old pin leak [https://bugzilla.kernel.org/show_bug.cgi?id=17181]. I keep finding little buglets that might contribute, but so far inconclusive. The latest one was: commit 0ba41e449fd0f45f5b29c1009020ab1b298bedda Author: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> Date: Sat Jan 8 15:10:41 2011 +0000 drm: Restore the old_fb upon modeset failure ... or else we may end up disabling the wrong framebuffer, leading to an OOPS, e.g: -Chris -- Chris Wilson, Intel Open Source Technology Centre
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