| Bug ID | 100058 |
|---|---|
| Summary | NULL pointer dereference when blacklisting radeon |
| Product | DRI |
| Version | XOrg git |
| Hardware | Other |
| OS | Linux (All) |
| Status | NEW |
| Severity | normal |
| Priority | medium |
| Component | General |
| Assignee | dri-devel@lists.freedesktop.org |
| Reporter | adam.wolk@tintagel.pl |
Created attachment 130063 [details] system log from multiple reboots I noticed my external display constantly turning on and off unless a DRI app is active (ie. running DRI_PRIME=1 glxgears). I was suggested to blacklist the `radeon` driver as I am using `amdgpu` and I proceeded to do this. Blacklisting the driver results in the system not being able to boot. >From the first attempts I caught those 2 screenshots: https://imgur.com/AjG7IgB,xEi2L4B https://imgur.com/xEi2L4B my last attempt revealed a kernel null pointer dereference that was logged in journalctl (other errors; stack traces were not logged) https://gist.github.com/mulander/6f4d8bfc0fe73af25ee2c95014754822 I'm attaching all journalctl entries since today, search it for 'BUG' to see the boot with the null pointer dereference. It was started with radeon blacklisted on boot. I tried several blacklisting methods including modprobe.conf & regenerating initramfs. [mulander@napalm ~]$ uname -a Linux napalm 4.9.11-1-ARCH #1 SMP PREEMPT Sun Feb 19 13:45:52 UTC 2017 x86_64 GNU/Linux [mulander@napalm ~]$ lspci 00:00.0 Host bridge: Intel Corporation Haswell-ULT DRAM Controller (rev 0b) 00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller (rev 0b) 00:03.0 Audio device: Intel Corporation Haswell-ULT HD Audio Controller (rev 0b) 00:14.0 USB controller: Intel Corporation 8 Series USB xHCI HC (rev 04) 00:16.0 Communication controller: Intel Corporation 8 Series HECI #0 (rev 04) 00:1b.0 Audio device: Intel Corporation 8 Series HD Audio Controller (rev 04) 00:1c.0 PCI bridge: Intel Corporation 8 Series PCI Express Root Port 3 (rev e4) 00:1c.3 PCI bridge: Intel Corporation 8 Series PCI Express Root Port 4 (rev e4) 00:1c.4 PCI bridge: Intel Corporation 8 Series PCI Express Root Port 5 (rev e4) 00:1d.0 USB controller: Intel Corporation 8 Series USB EHCI #1 (rev 04) 00:1f.0 ISA bridge: Intel Corporation 8 Series LPC Controller (rev 04) 00:1f.2 SATA controller: Intel Corporation 8 Series SATA Controller 1 [AHCI mode] (rev 04) 00:1f.3 SMBus: Intel Corporation 8 Series SMBus Controller (rev 04) 01:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 10) 02:00.0 Network controller: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter (rev 01) 03:00.0 Display controller: Advanced Micro Devices, Inc. [AMD/ATI] Sun LE [Radeon HD 8550M / R5 M230] lsmod Module Size Used by ctr 16384 6 ccm 20480 3 hid_generic 16384 0 usbhid 49152 0 joydev 20480 0 mousedev 20480 0 amdgpu 1499136 0 snd_hda_codec_hdmi 45056 1 amdkfd 122880 1 amd_iommu_v2 20480 1 amdkfd intel_rapl 20480 0 x86_pkg_temp_thermal 16384 0 intel_powerclamp 16384 0 coretemp 16384 0 kvm 524288 0 radeon 1478656 4 irqbypass 16384 1 kvm intel_cstate 16384 0 ttm 86016 2 amdgpu,radeon intel_rapl_perf 16384 0 snd_soc_rt5640 110592 0 snd_soc_rl6231 16384 1 snd_soc_rt5640 ppdev 20480 0 snd_soc_core 188416 1 snd_soc_rt5640 snd_hda_codec_conexant 24576 1 snd_hda_codec_generic 69632 1 snd_hda_codec_conexant snd_hda_intel 32768 7 snd_hda_codec 106496 4 snd_hda_intel,snd_hda_codec_conexant,snd_hda_codec_hdmi,snd_hda_codec_generic snd_compress 20480 1 snd_soc_core evdev 24576 15 snd_hda_core 65536 5 snd_hda_intel,snd_hda_codec_conexant,snd_hda_codec,snd_hda_codec_hdmi,snd_hda_codec_generic snd_pcm_dmaengine 16384 1 snd_soc_core snd_hwdep 16384 1 snd_hda_codec psmouse 131072 0 ideapad_laptop 24576 0 pcspkr 16384 0 input_leds 16384 0 sparse_keymap 16384 1 ideapad_laptop arc4 16384 2 mac_hid 16384 0 r8169 77824 0 ath9k 131072 0 ath9k_common 32768 1 ath9k ath9k_hw 442368 2 ath9k,ath9k_common uvcvideo 86016 0 ath 28672 3 ath9k_hw,ath9k,ath9k_common videobuf2_vmalloc 16384 1 uvcvideo videobuf2_memops 16384 1 videobuf2_vmalloc ath3k 20480 0 btusb 40960 0 videobuf2_v4l2 20480 1 uvcvideo mac80211 688128 1 ath9k videobuf2_core 36864 2 uvcvideo,videobuf2_v4l2 btrtl 16384 1 btusb btbcm 16384 1 btusb btintel 16384 1 btusb videodev 151552 3 uvcvideo,videobuf2_core,videobuf2_v4l2 rtsx_usb_ms 20480 0 bluetooth 499712 6 btrtl,btintel,btbcm,ath3k,btusb media 32768 2 uvcvideo,videodev memstick 16384 1 rtsx_usb_ms snd_pcm 90112 9 snd_hda_intel,snd_hda_codec,snd_pcm_dmaengine,snd_hda_core,snd_soc_rt5640,snd_hda_codec_hdmi,snd_soc_core cfg80211 516096 4 mac80211,ath9k,ath,ath9k_common mii 16384 1 r8169 battery 20480 0 rfkill 20480 5 bluetooth,ideapad_laptop,cfg80211 wmi 16384 1 ideapad_laptop ac97_bus 16384 1 snd_soc_core i2c_hid 20480 0 hid 114688 3 i2c_hid,hid_generic,usbhid fjes 28672 0 elan_i2c 32768 0 i915 1204224 12 parport_pc 28672 0 parport 40960 2 parport_pc,ppdev video 36864 2 i915,ideapad_laptop mei_me 36864 0 spi_pxa2xx_platform 24576 0 8250_dw 16384 0 i2c_designware_platform 16384 0 drm_kms_helper 126976 3 amdgpu,radeon,i915 drm 294912 13 amdgpu,radeon,i915,ttm,drm_kms_helper snd_soc_sst_acpi 16384 0 intel_gtt 20480 1 i915 snd_soc_sst_match 16384 1 snd_soc_sst_acpi syscopyarea 16384 1 drm_kms_helper sysfillrect 16384 1 drm_kms_helper sysimgblt 16384 1 drm_kms_helper fb_sys_fops 16384 1 drm_kms_helper i2c_algo_bit 16384 3 amdgpu,radeon,i915 snd_timer 28672 1 snd_pcm snd 69632 22 snd_compress,snd_hda_intel,snd_hwdep,snd_hda_codec_conexant,snd_hda_codec,snd_timer,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_soc_core,snd_pcm lpc_ich 24576 0 mei 86016 1 mei_me shpchp 32768 0 soc_button_array 16384 0 i2c_i801 24576 0 i2c_designware_core 20480 1 i2c_designware_platform i2c_smbus 16384 1 i2c_i801 soundcore 16384 1 snd tpm_tis 16384 0 tpm_tis_core 20480 1 tpm_tis tpm 36864 2 tpm_tis,tpm_tis_core ac 16384 0 button 16384 1 i915 sch_fq_codel 20480 5 ip_tables 28672 0 x_tables 28672 1 ip_tables ext4 528384 3 crc16 16384 2 bluetooth,ext4 jbd2 90112 1 ext4 fscrypto 24576 1 ext4 mbcache 16384 4 ext4 algif_skcipher 20480 0 af_alg 16384 1 algif_skcipher dm_crypt 28672 1 dm_mod 106496 12 dm_crypt sr_mod 24576 0 sd_mod 36864 3 cdrom 53248 1 sr_mod rtsx_usb_sdmmc 28672 0 rtsx_usb 20480 2 rtsx_usb_sdmmc,rtsx_usb_ms serio_raw 16384 0 atkbd 24576 0 libps2 16384 2 atkbd,psmouse crct10dif_pclmul 16384 0 crc32_pclmul 16384 0 crc32c_intel 24576 0 ghash_clmulni_intel 16384 0 ahci 36864 2 libahci 28672 1 ahci aesni_intel 167936 9 xhci_pci 16384 0 aes_x86_64 20480 1 aesni_intel lrw 16384 1 aesni_intel xhci_hcd 172032 1 xhci_pci gf128mul 16384 1 lrw glue_helper 16384 1 aesni_intel ablk_helper 16384 1 aesni_intel cryptd 20480 4 ablk_helper,ghash_clmulni_intel,aesni_intel libata 212992 2 ahci,libahci ehci_pci 16384 0 ehci_hcd 73728 1 ehci_pci usbcore 208896 9 uvcvideo,usbhid,ehci_hcd,xhci_pci,rtsx_usb,ath3k,btusb,xhci_hcd,ehci_pci scsi_mod 159744 3 sd_mod,libata,sr_mod usb_common 16384 1 usbcore i8042 28672 1 ideapad_laptop serio 20480 6 serio_raw,atkbd,psmouse,i8042 sdhci_acpi 16384 0 sdhci 40960 1 sdhci_acpi led_class 16384 4 rtsx_usb_sdmmc,sdhci,input_leds,ath9k mmc_core 122880 3 rtsx_usb_sdmmc,sdhci,sdhci_acpi
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