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<base href="https://bugs.freedesktop.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - [Acer Aspire 4820TG] Kernel Oops - unable to handle kernel NULL pointer dereference at 00000004; EIP is at drm_mm_remove_node+0x51/0xf0 [drm]"
href="https://bugs.freedesktop.org/show_bug.cgi?id=88927">88927</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[Acer Aspire 4820TG] Kernel Oops - unable to handle kernel NULL pointer dereference at 00000004; EIP is at drm_mm_remove_node+0x51/0xf0 [drm]
</td>
</tr>
<tr>
<th>Product</th>
<td>xorg
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>x86-64 (AMD64)
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux (All)
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Component</th>
<td>Driver/Radeon
</td>
</tr>
<tr>
<th>Assignee</th>
<td>xorg-driver-ati@lists.x.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>tiagdtd-lava@yahoo.de
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>xorg-team@lists.x.org
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=113078" name="attach_113078" title="System information (dmesg, lspci, ...)">attachment 113078</a> <a href="attachment.cgi?id=113078&action=edit" title="System information (dmesg, lspci, ...)">[details]</a></span>
System information (dmesg, lspci, ...)
I have some problems with the new kernel/radeon drivers with my Radeon HD 5650
in my Acer Aspire 4820TG laptop.
The x-server is started but the GUI constantly freezes for a few seconds. It
happens regardles of the running applications.
The kernel reports repeatedly about some issues (with stack traces).
I think this stack traces point to NULL pointer dereferences.
Kernel Version:
Linux version 3.19.0-031900rc7-generic (kernel@gomeisa) (gcc version 4.6.3
(Ubuntu/Linaro 4.6.3-1ubuntu5) ) #201502020035 SMP Mon Feb 2 05:36:49 UTC 2015
First stack trace:
[ 28.702100] WARNING: CPU: 3 PID: 155 at
/home/kernel/COD/linux/drivers/gpu/drm/radeon/radeon_gart.c:246
radeon_gart_unbind+0xca/0xe0 [radeon]()
[ 28.702101] trying to unbind memory from uninitialized GART !
[ 28.702102] Modules linked in: ctr ccm arc4 brcmsmac cordic brcmutil b43
mac80211 cfg80211 snd_hda_codec_hdmi snd_hda_codec_realtek
snd_hda_codec_generic ssb intel_powerclamp coretemp snd_hda_intel kvm_intel
snd_hda_controller rfcomm snd_hda_codec acer_wmi bnep snd_hwdep kvm
sparse_keymap crct10dif_pclmul snd_pcm crc32_pclmul ghash_clmulni_intel
snd_seq_midi uvcvideo snd_seq_midi_event videobuf2_vmalloc videobuf2_memops
aesni_intel snd_rawmidi videobuf2_core aes_x86_64 snd_seq binfmt_misc
v4l2_common btusb lrw gf128mul videodev glue_helper ablk_helper media bluetooth
cryptd snd_seq_device snd_timer joydev serio_raw snd intel_ips mei_me soundcore
mei lpc_ich bcma mac_hid parport_pc ppdev lp parport amdkfd amd_iommu_v2 radeon
i915 psmouse i2c_algo_bit ttm drm_kms_helper ahci drm libahci atl1c wmi video
[ 28.702134] CPU: 3 PID: 155 Comm: kworker/u16:6 Not tainted
3.19.0-031900rc7-generic #201502020035
[ 28.702135] Hardware name: Acer /JM41_CP, BIOS V1.25 03/16/2011
[ 28.702142] Workqueue: kacpi_hotplug acpi_hotplug_work_fn
[ 28.702143] 00000000000000f6 ffff8800354db6f8 ffffffff817c47b0
0000000000000007
[ 28.702145] ffff8800354db748 ffff8800354db738 ffffffff81076df7
ffffffff81f12d95
[ 28.702146] ffff880000074000 ffff8800354db948 ffff880000074728
ffff880035708540
[ 28.702148] Call Trace:
[ 28.702156] [<ffffffff817c47b0>] dump_stack+0x45/0x57
[ 28.702160] [<ffffffff81076df7>] warn_slowpath_common+0x97/0xe0
[ 28.702162] [<ffffffff81076ef6>] warn_slowpath_fmt+0x46/0x50
[ 28.702167] [<ffffffff814aa774>] ? vt_console_print+0x2d4/0x3b0
[ 28.702177] [<ffffffffc030a5aa>] radeon_gart_unbind+0xca/0xe0 [radeon]
[ 28.702187] [<ffffffffc0306c32>] radeon_ttm_backend_unbind+0x22/0x40
[radeon]
[ 28.702193] [<ffffffffc0138177>] ttm_tt_unbind+0x27/0x40 [ttm]
[ 28.702216] [<ffffffffc013cb68>] ttm_bo_move_ttm+0xf8/0x130 [ttm]
[ 28.702220] [<ffffffffc013a326>] ttm_bo_handle_move_mem+0x636/0x6f0 [ttm]
[ 28.702226] [<ffffffff810cc888>] ? console_unlock+0x18/0x30
[ 28.702227] [<ffffffff810cd1ae>] ? vprintk_emit+0x25e/0x510
[ 28.702232] [<ffffffffc013a522>] ttm_bo_evict+0x142/0x200 [ttm]
[ 28.702237] [<ffffffffc013a76b>] ttm_mem_evict_first+0x18b/0x1f0 [ttm]
[ 28.702242] [<ffffffffc01404b3>] ? ttm_bo_man_takedown+0x53/0x80 [ttm]
[ 28.702247] [<ffffffffc013a841>] ttm_bo_force_list_clean+0x71/0xc0 [ttm]
[ 28.702256] [<ffffffffc013a937>] ttm_bo_clean_mm+0x47/0x90 [ttm]
[ 28.702272] [<ffffffffc03086f5>] radeon_ttm_fini+0xf5/0x1c0 [radeon]
[ 28.702288] [<ffffffffc0309476>] radeon_bo_fini+0x16/0x30 [radeon]
[ 28.702311] [<ffffffffc0365e6f>] evergreen_fini+0xaf/0xe0 [radeon]
[ 28.702322] [<ffffffffc02ec46f>] radeon_device_fini+0x3f/0x140 [radeon]
[ 28.702331] [<ffffffffc02ee969>] radeon_driver_unload_kms+0x59/0x80
[radeon]
[ 28.702344] [<ffffffffc008e52d>] drm_dev_unregister+0x2d/0xc0 [drm]
[ 28.702352] [<ffffffffc008eb07>] drm_put_dev+0x27/0x70 [drm]
[ 28.702360] [<ffffffffc02ea215>] radeon_pci_remove+0x15/0x20 [radeon]
[ 28.702363] [<ffffffff813f0fa6>] pci_device_remove+0x46/0xc0
[ 28.702367] [<ffffffff814f6b9f>] __device_release_driver+0x7f/0xf0
[ 28.702369] [<ffffffff814f6c3c>] device_release_driver+0x2c/0x40
[ 28.702372] [<ffffffff813ead8c>] pci_stop_bus_device+0x9c/0xb0
[ 28.702373] [<ffffffff813ead33>] pci_stop_bus_device+0x43/0xb0
[ 28.702375] [<ffffffff813eaf46>] pci_stop_and_remove_bus_device+0x16/0x30
[ 28.702378] [<ffffffff8140a387>] disable_slot+0x57/0xa0
[ 28.702380] [<ffffffff8140ab58>] acpiphp_check_bridge.part.11+0xe8/0x100
[ 28.702382] [<ffffffff8140b588>] acpiphp_check_host_bridge+0x88/0xb0
[ 28.702384] [<ffffffff8143c6aa>] acpi_pci_root_scan_dependent+0xe/0x12
[ 28.702387] [<ffffffff814392bb>] acpi_scan_bus_check+0x48/0xad
[ 28.702389] [<ffffffff814393f3>] acpi_generic_hotplug_event+0x2e/0x87
[ 28.702391] [<ffffffff814394a1>] acpi_device_hotplug+0x55/0xcd
[ 28.702393] [<ffffffff814329ce>] acpi_hotplug_work_fn+0x20/0x2d
[ 28.702397] [<ffffffff8108f6dd>] process_one_work+0x14d/0x460
[ 28.702406] [<ffffffff810900bb>] worker_thread+0x11b/0x3f0
[ 28.702415] [<ffffffff8108ffa0>] ? create_worker+0x1e0/0x1e0
[ 28.702421] [<ffffffff81095cc9>] kthread+0xc9/0xe0
[ 28.702423] [<ffffffff81095c00>] ? flush_kthread_worker+0x90/0x90
[ 28.702427] [<ffffffff817d1a3c>] ret_from_fork+0x7c/0xb0
[ 28.702428] [<ffffffff81095c00>] ? flush_kthread_worker+0x90/0x90
[ 28.702430] ---[ end trace 951e27bb90f8cfd4 ]---
I added detailed information in the attachment. I can try to provide more
information if needed.</pre>
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