Bug 690865

Another kernel crash on my computer and it looks similar. I believe this is regression from 6.0 since I have not observed the same crashes with earlier kernels.

  SYSTEM MAP: /boot/System.map-2.6.32-122.el6.x86_64                   
DEBUG KERNEL: /usr/lib/debug/lib/modules/2.6.32-122.el6.x86_64/vmlinux (2.6.32-122.el6.x86_64)
    DUMPFILE: vmcore
        CPUS: 4
        DATE: Tue Mar 29 13:01:41 2011
      UPTIME: 13:32:07
LOAD AVERAGE: 2.00, 1.71, 1.36
       TASKS: 374
    NODENAME: mkhusid
     RELEASE: 2.6.32-122.el6.x86_64
     VERSION: #1 SMP Wed Mar 9 23:54:34 EST 2011
     MACHINE: x86_64  (2526 Mhz)
      MEMORY: 3.8 GB
       PANIC: "kernel BUG at drivers/gpu/drm/i915/i915_gem.c:4190!"
         PID: 155
     COMMAND: "kslowd001"
        TASK: ffff880132da40c0  [THREAD_INFO: ffff88012df3e000]
         CPU: 3
       STATE: TASK_RUNNING (PANIC)

crash> bt -l
bt: line numbers are not available
PID: 155    TASK: ffff880132da40c0  CPU: 3   COMMAND: "kslowd001"
 #0 [ffff88012df3f510] machine_kexec at ffffffff81030c0b
 #1 [ffff88012df3f570] crash_kexec at ffffffff810b6142
 #2 [ffff88012df3f640] oops_end at ffffffff814dcdc0
 #3 [ffff88012df3f670] die at ffffffff8100f2fb
 #4 [ffff88012df3f6a0] do_trap at ffffffff814dc6b4
 #5 [ffff88012df3f700] do_invalid_op at ffffffff8100ceb5
 #6 [ffff88012df3f7a0] invalid_op at ffffffff8100bf5b
    [exception RIP: i915_gem_object_pin+424]
    RIP: ffffffffa00b9bb8  RSP: ffff88012df3f850  RFLAGS: 00010246
    RAX: 000000000003c47e  RBX: ffff88012eeaa200  RCX: 0000000000000000
    RDX: 000000000003c000  RSI: 0000000000001000  RDI: ffff88012eeaa200
    RBP: ffff88012df3f870   R8: ffff88012df3e000   R9: 00000000ffffffff
    R10: 0000000000000000  R11: 0000000000000000  R12: ffff88012e610000
    R13: 0000000000001000  R14: 0000000000000000  R15: 0000000000000000
    ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018
 #7 [ffff88012df3f878] intel_pin_and_fence_fb_obj at ffffffffa00c37d0 [i915]
 #8 [ffff88012df3f8a8] intel_pipe_set_base at ffffffffa00c6791 [i915]
 #9 [ffff88012df3f938] intel_crtc_mode_set at ffffffffa00cf784 [i915]
#10 [ffff88012df3fa78] drm_crtc_helper_set_mode at ffffffffa0096632 [drm_kms_helper]
#11 [ffff88012df3fc18] drm_crtc_helper_set_config at ffffffffa009776a [drm_kms_helper]
#12 [ffff88012df3fcd8] drm_fb_helper_set_par at ffffffffa009509c [drm_kms_helper]
#13 [ffff88012df3fd18] drm_fb_helper_single_fb_probe at ffffffffa0095260 [drm_kms_helper]
#14 [ffff88012df3fd68] drm_fb_helper_hotplug_event at ffffffffa0094fe4 [drm_kms_helper]
#15 [ffff88012df3fda8] intel_fb_output_poll_changed at ffffffffa00de2cc [i915]
#16 [ffff88012df3fdb8] output_poll_execute at ffffffffa00962bc [drm_kms_helper]
#17 [ffff88012df3fe28] slow_work_execute at ffffffff811018a3
#18 [ffff88012df3fe68] slow_work_thread at ffffffff81101ad7
#19 [ffff88012df3fee8] kthread at ffffffff8108db96
#20 [ffff88012df3ff48] kernel_thread at ffffffff8100c1ca
crash>

http://download.devel.redhat.com/brewroot/scratch/airlied/task_3218241/

please give this a go, see if you can reproduce either oops. it definitely should fix at least one of them.

Reproduced from the first try. I can't control whether it crashes on pin or unpin.


SYSTEM MAP: /boot/System.map-2.6.32-128.el6.test.x86_64              
DEBUG KERNEL: /usr/lib/debug/lib/modules/2.6.32-128.el6.test.x86_64/vmlinux (2.6.32-128.el6.test.x86_64)
    DUMPFILE: vmcore
        CPUS: 4
        DATE: Fri Apr  1 16:55:23 2011
      UPTIME: 06:18:53
LOAD AVERAGE: 1.58, 1.19, 1.28
       TASKS: 387
    NODENAME: mkhusid
     RELEASE: 2.6.32-128.el6.test.x86_64
     VERSION: #1 SMP Wed Mar 30 23:13:42 EDT 2011
     MACHINE: x86_64  (2527 Mhz)
      MEMORY: 3.8 GB
       PANIC: "kernel BUG at drivers/gpu/drm/i915/i915_gem.c:4192!"
         PID: 11259
     COMMAND: "Xorg"
        TASK: ffff88012a792a80  [THREAD_INFO: ffff880130e54000]
         CPU: 3
       STATE: TASK_RUNNING (PANIC)

crash> bt -l
bt: line numbers are not available
PID: 11259  TASK: ffff88012a792a80  CPU: 3   COMMAND: "Xorg"
 #0 [ffff880130e55140] machine_kexec at ffffffff8103107b
 #1 [ffff880130e551a0] crash_kexec at ffffffff810b63c2
 #2 [ffff880130e55270] oops_end at ffffffff814dd650
 #3 [ffff880130e552a0] die at ffffffff8100f2fb
 #4 [ffff880130e552d0] do_trap at ffffffff814dcf44
 #5 [ffff880130e55330] do_invalid_op at ffffffff8100ceb5
 #6 [ffff880130e553d0] invalid_op at ffffffff8100bf5b
    [exception RIP: i915_gem_object_pin+424]
    RIP: ffffffffa00b9c28  RSP: ffff880130e55488  RFLAGS: 00010246
    RAX: 000000000003c47e  RBX: ffff88012ef21e00  RCX: 0000000000000000
    RDX: 000000000003c000  RSI: 0000000000001000  RDI: ffff88012ef21e00
    RBP: ffff880130e554a8   R8: ffff880130e54000   R9: 0000000000000000
    R10: 0000000000000000  R11: 0000000000000000  R12: ffff88012e69c000
    R13: 0000000000001000  R14: 0000000000000000  R15: 0000000000000000
    ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018
 #7 [ffff880130e554b0] intel_pin_and_fence_fb_obj at ffffffffa00c3840 [i915]
 #8 [ffff880130e554e0] intel_pipe_set_base at ffffffffa00c6801 [i915]
 #9 [ffff880130e55570] intel_crtc_mode_set at ffffffffa00cf804 [i915]
#10 [ffff880130e556b0] drm_crtc_helper_set_mode at ffffffffa0096632 [drm_kms_helper]
#11 [ffff880130e55850] drm_crtc_helper_set_config at ffffffffa0097652 [drm_kms_helper]
#12 [ffff880130e55910] drm_fb_helper_set_par at ffffffffa009509c [drm_kms_helper]
#13 [ffff880130e55950] drm_fb_helper_single_fb_probe at ffffffffa0095260 [drm_kms_helper]
#14 [ffff880130e559a0] drm_fb_helper_hotplug_event at ffffffffa0094fe4 [drm_kms_helper]
#15 [ffff880130e559e0] drm_fb_helper_set_par at ffffffffa00950e6 [drm_kms_helper]
#16 [ffff880130e55a20] fb_set_var at ffffffff8129fc42
#17 [ffff880130e55bf0] fbcon_blank at ffffffff812aea0c
#18 [ffff880130e55cf0] do_unblank_screen at ffffffff813160d0
#19 [ffff880130e55d10] complete_change_console at ffffffff8130b60f
#20 [ffff880130e55d40] vt_ioctl at ffffffff8130d2ed
#21 [ffff880130e55e00] tty_ioctl at ffffffff81301802
#22 [ffff880130e55e60] vfs_ioctl at ffffffff81183c92
#23 [ffff880130e55ea0] do_vfs_ioctl at ffffffff81183e34
#24 [ffff880130e55f30] sys_ioctl at ffffffff811843b1
#25 [ffff880130e55f80] system_call_fastpath at ffffffff8100b172
    RIP: 0000003fcaedde87  RSP: 00007ffff5447b68  RFLAGS: 00013202
    RAX: 0000000000000010  RBX: ffffffff8100b172  RCX: 0000000000000001
    RDX: 0000000000000001  RSI: 0000000000005605  RDI: 0000000000000005
    RBP: 0000000000000008   R8: 0000000000000000   R9: 0000000000000001
    R10: 696c6320584c4749  R11: 0000000000003246  R12: 00000000007d38a0
    R13: 0000000000000000  R14: 00000000007d1188  R15: 0000000000000001
    ORIG_RAX: 0000000000000010  CS: 0033  SS: 002b

can I get a dmesg with drm.debug=4 on the command line for that machine

using the test kernel

oh also what userspace xorg-x11-drv-intel package is installed can you check if the one from the EL6 nightly makes any difference if you aren't running it already.

are you running compiz or any sort of desktop effects? what window manager etc are you using?

something is unbalanced the pin count, and I'm having trouble reproducing it on similar hardware here.

also pleast attach /var/log/Xorg.0.log

Okay I found another upstream patch that didn't hit stable properly

http://brewweb.devel.redhat.com/brew/taskinfo?taskID=3225635

will have it in 

http://download.devel.redhat.com/brewroot/scratch/airlied/

when it finishes.

Target for Snap 5

http://download.devel.redhat.com/brewroot/scratch/airlied/task_3225635/

has the final build please test and get back to me thanks.

This request was evaluated by Red Hat Product Management for inclusion
in a Red Hat Enterprise Linux maintenance release. Product Management has 
requested further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed 
products. This request is not yet committed for inclusion in an Update release.

(In reply to comment #11)
> http://download.devel.redhat.com/brewroot/scratch/airlied/task_3225635/
> 
> has the final build please test and get back to me thanks.

I can't reproduce the crash with this kernel. Been trying for the past week.
Thank you.

Patch(es) available on kernel-2.6.32-131.0.1.el6

An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2011-0542.html