[BUG] DRM kernel NULL pointer dereference (linux-next 20210115)
Andy Lavr
andy.lavr at gmail.com
Mon Jan 18 09:14:02 UTC 2021
> attached patchfile and report if it fixes the issue?
Yes, fixed. Thanks.
18.01.2021 08:25, Thomas Zimmermann пишет:
> (cc'ing dri-devel)
>
> Hi
>
> thanks for reporting the bug.
>
> Am 17.01.21 um 12:12 schrieb Andy Lavr:
>> Hey,
>>
>>
>> You forgot to add these commits to linux-next:
>>
>>
>> drm: Move struct drm_device.pdev to legacy
>>
>> https://patchwork.kernel.org/project/intel-gfx/cover/20210107080748.4768-1-tzimmermann@suse.de/
>>
>>
>>
>> I committed these patches to my local tree and that solved my problem.
>>
>>
>> * v3,4/8] drm/i915: Remove references to struct drm_device.pdev
>> <https://patchwork.kernel.org/project/intel-gfx/patch/20210107080748.4768-5-tzimmermann@suse.de/>
>> * [v3,5/8] drm/i915/gt: Remove references to struct drm_device.pdev
>> <https://patchwork.kernel.org/project/intel-gfx/patch/20210107080748.4768-6-tzimmermann@suse.de/>
>> * [v3,6/8] drm/i915/gvt: Remove references to struct drm_device.pdev
>> <https://patchwork.kernel.org/project/intel-gfx/patch/20210107080748.4768-7-tzimmermann@suse.de/>
>> * [v3,8/8] drm: Upcast struct drm_device.dev to struct pci_device;
>> replace pdev
>> <https://patchwork.kernel.org/project/intel-gfx/patch/20210107080748.4768-9-tzimmermann@suse.de/>
>
> These patches have not been merged yet as they have to wait for some
> preparation in the i915 driver.
>
> I reduced the final patch, so it should change the buggy code. Could
> you please apply only the attached patchfile and report if it fixes
> the issue?
>
> Best regards
> Thomas
>
>>
>>
>>
>> Thanks to all!
>>
>>
>> 16.01.2021 15:17, Andy Lavr:
>>>
>>> Hey,
>>>
>>>
>>> *linux-next 20210114 work fine.*
>>>
>>>
>>> *linux-next 20210115:*
>>>
>>> Jan 15 17:34:30 wip kernel: [ 35.185982] *BUG: kernel NULL pointer
>>> dereference, address: 0000000000000010*
>>> Jan 15 17:34:30 wip kernel: [ 35.186988] #PF: supervisor read
>>> access in kernel mode
>>> Jan 15 17:34:30 wip kernel: [ 35.187984] #PF: error_code(0x0000) -
>>> not-present page
>>> Jan 15 17:34:30 wip kernel: [ 35.189016] PGD 0 P4D 0
>>> Jan 15 17:34:30 wip kernel: [ 35.190508] Oops: 0000 [#1] SMP PTI
>>> Jan 15 17:34:30 wip kernel: [ 35.191814] CPU: 6 PID: 1319 Comm:
>>> Xorg Not tainted 5.11.13-dragon-sandybridge #202101150001
>>> Jan 15 17:34:30 wip kernel: [ 35.192847] Hardware name: Dell Inc.
>>> Precision M6600/04YY4M, BIOS A18 09/14/2018
>>> Jan 15 17:34:30 wip kernel: [ 35.193877] *RIP:
>>> 0010:drm_pci_set_busid+0x1a/0x80 [drm]*
>>> Jan 15 17:34:30 wip kernel: [ 35.194950] Code: fc 06 f8 c8 00 00
>>> 00 00 00 00 00 00 00 00 00 00 0f 1f 44 00 00 55 53 50 48 89 f3 31 d2
>>> 81 3f 04 00 01 00 48 8b 87 78 01 00 00 <48> 8b 48 10 7c 09 48 8b 91
>>> d0 01 00 00 8b 12 0f b6 89 e0 01 00 00
>>> Jan 15 17:34:30 wip kernel: [ 35.196094] RSP:
>>> 0018:ffffaacf485afd38 EFLAGS: 00010246
>>> Jan 15 17:34:30 wip kernel: [ 35.197695] RAX: 0000000000000000
>>> RBX: ffff95f1684e5000 RCX: ffffffff8b06f380
>>> Jan 15 17:34:30 wip kernel: [ 35.198872] RDX: 0000000000000000
>>> RSI: ffff95f1684e5000 RDI: ffff95f175240010
>>> Jan 15 17:34:30 wip kernel: [ 35.200037] RBP: 00000000ffffffea
>>> R08: 000000000000e200 R09: 0000000000000001
>>> Jan 15 17:34:30 wip kernel: [ 35.201205] R10: ffff95f16de88b00
>>> R11: ffffffffc03e1990 R12: ffff95f1684e5000
>>> Jan 15 17:34:30 wip kernel: [ 35.202383] R13: 00007fff8865e240
>>> R14: ffff95f1752400a8 R15: ffff95f175240010
>>> Jan 15 17:34:30 wip kernel: [ 35.203554] FS:
>>> 000070bcd696da40(0000) GS:ffff95f41db80000(0000) knlGS:0000000000000000
>>> Jan 15 17:34:30 wip kernel: [ 35.204742] CS: 0010 DS: 0000 ES:
>>> 0000 CR0: 0000000080050033
>>> Jan 15 17:34:30 wip kernel: [ 35.205936] CR2: 0000000000000010
>>> CR3: 0000000186c28006 CR4: 00000000000606e0
>>> Jan 15 17:34:30 wip kernel: [ 35.207144] Call Trace:
>>> Jan 15 17:34:30 wip kernel: [ 35.208370]
>>> drm_setversion+0x13e/0x170 [drm]
>>> Jan 15 17:34:30 wip kernel: [ 35.209596] ? drm_getstats+0x20/0x20
>>> [drm]
>>> Jan 15 17:34:30 wip kernel: [ 35.210799]
>>> drm_ioctl_kernel+0xe2/0x150 [drm]
>>> Jan 15 17:34:30 wip kernel: [ 35.211989] drm_ioctl+0x30b/0x440 [drm]
>>> Jan 15 17:34:30 wip kernel: [ 35.213170] ? drm_getstats+0x20/0x20
>>> [drm]
>>> Jan 15 17:34:30 wip kernel: [ 35.214351]
>>> amdgpu_drm_ioctl+0x44/0x80 [amdgpu]
>>> Jan 15 17:34:30 wip kernel: [ 35.215696] __se_sys_ioctl+0x78/0xc0
>>> Jan 15 17:34:30 wip kernel: [ 35.216848] do_syscall_64+0x33/0x70
>>> Jan 15 17:34:30 wip kernel: [ 35.218002]
>>> entry_SYSCALL_64_after_hwframe+0x44/0xa9
>>> Jan 15 17:34:30 wip kernel: [ 35.219177] RIP: 0033:0x70bcd6dd931b
>>> Jan 15 17:34:30 wip kernel: [ 35.220654] Code: 89 d8 49 8d 3c 1c
>>> 48 f7 d8 49 39 c4 72 b5 e8 1c ff ff ff 85 c0 78 ba 4c 89 e0 5b 5d 41
>>> 5c c3 f3 0f 1e fa b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3
>>> 48 8b 0d 1d 3b 0d 00 f7 d8 64 89 01 48
>>> Jan 15 17:34:30 wip kernel: [ 35.222211] RSP:
>>> 002b:00007fff8865e208 EFLAGS: 00000202 ORIG_RAX: 0000000000000010
>>> Jan 15 17:34:30 wip kernel: [ 35.223778] RAX: ffffffffffffffda
>>> RBX: 00007fff8865e240 RCX: 000070bcd6dd931b
>>> Jan 15 17:34:30 wip kernel: [ 35.225145] RDX: 00007fff8865e240
>>> RSI: 00000000c0106407 RDI: 000000000000000c
>>> Jan 15 17:34:30 wip kernel: [ 35.226420] RBP: 00000000c0106407
>>> R08: 0000000000000031 R09: 0000000000000000
>>> Jan 15 17:34:30 wip kernel: [ 35.227691] R10: 000070bcd7850ec0
>>> R11: 0000000000000202 R12: 00005b60f67cbb50
>>> Jan 15 17:34:30 wip kernel: [ 35.228954] R13: 000000000000000c
>>> R14: 00005b60f67cbb90 R15: 0000000000000000
>>> Jan 15 17:34:30 wip kernel: [ 35.229231] iwlwifi 0000:03:00.0:
>>> Radio type=0x0-0x3-0x1
>>> Jan 15 17:34:30 wip kernel: [ 35.230218] Modules linked in: vfat
>>> fat intel_rapl_msr hid_generic mei_hdcp at24 dell_rbtn iwldvm
>>> dell_laptop dell_smm_hwmon mac80211 intel_rapl_common libarc4
>>> snd_hda_codec_idt snd_hda_codec_generic x86_pkg_temp_thermal
>>> ledtrig_audio intel_powerclamp snd_hda_codec_hdmi crct10dif_pclmul
>>> iwlwifi crc32_pclmul ghash_clmulni_intel snd_hda_intel rapl
>>> snd_intel_dspcfg usbhid intel_cstate firewire_ohci dell_wmi
>>> sdhci_pci hid snd_hda_codec firewire_core dell_smbios crc_itu_t
>>> mei_me dcdbas cfg80211 sparse_keymap cqhci i2c_i801 sdhci
>>> snd_hda_core joydev e1000e snd_hwdep wmi_bmof dell_wmi_descriptor
>>> i2c_smbus mei tpm_tis tpm_tis_core tpm dell_smo8800 xt_hl ip6_tables
>>> ip6t_rt nf_log_ipv4 nf_log_common ipt_REJECT nf_reject_ipv4 xt_LOG
>>> nft_limit xt_limit xt_addrtype xt_tcpudp sch_cake tcp_yeah tcp_vegas
>>> xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 nft_compat
>>> nft_counter coretemp nf_tables nfnetlink parport_pc ppdev lp parport
>>> binfmt_misc ip_tables x_tables xfs raid10 raid456
>>> Jan 15 17:34:30 wip kernel: [ 35.232152] async_raid6_recov
>>> async_pq async_xor async_memcpy async_tx raid1 raid0 multipath
>>> linear amdgpu iommu_v2 gpu_sched drm_ttm_helper ttm i2c_algo_bit
>>> drm_kms_helper cec aesni_intel sysimgblt syscopyarea sysfillrect
>>> fb_sys_fops crypto_simd cryptd psmouse input_leds drm ahci serio_raw
>>> libahci wmi video mac_hid
>>> Jan 15 17:34:30 wip kernel: [ 35.242819] CR2: 0000000000000010
>>> Jan 15 17:34:30 wip kernel: [ 35.244502] ---[ end trace
>>> 47eef7912dfa1ae6 ]---
>>> Jan 15 17:34:30 wip kernel: [ 35.494899] *RIP:
>>> 0010:drm_pci_set_busid+0x1a/0x80 [drm]*
>>> Jan 15 17:34:30 wip kernel: [ 35.496577] Code: fc 06 f8 c8 00 00
>>> 00 00 00 00 00 00 00 00 00 00 0f 1f 44 00 00 55 53 50 48 89 f3 31 d2
>>> 81 3f 04 00 01 00 48 8b 87 78 01 00 00 <48> 8b 48 10 7c 09 48 8b 91
>>> d0 01 00 00 8b 12 0f b6 89 e0 01 00 00
>>> Jan 15 17:34:30 wip kernel: [ 35.498313] RSP:
>>> 0018:ffffaacf485afd38 EFLAGS: 00010246
>>> Jan 15 17:34:30 wip kernel: [ 35.500089] RAX: 0000000000000000
>>> RBX: ffff95f1684e5000 RCX: ffffffff8b06f380
>>> Jan 15 17:34:30 wip kernel: [ 35.501919] RDX: 0000000000000000
>>> RSI: ffff95f1684e5000 RDI: ffff95f175240010
>>> Jan 15 17:34:30 wip kernel: [ 35.503708] RBP: 00000000ffffffea
>>> R08: 000000000000e200 R09: 0000000000000001
>>> Jan 15 17:34:30 wip kernel: [ 35.505483] R10: ffff95f16de88b00
>>> R11: ffffffffc03e1990 R12: ffff95f1684e5000
>>> Jan 15 17:34:30 wip kernel: [ 35.507276] R13: 00007fff8865e240
>>> R14: ffff95f1752400a8 R15: ffff95f175240010
>>> Jan 15 17:34:30 wip kernel: [ 35.509058] FS:
>>> 000070bcd696da40(0000) GS:ffff95f41db80000(0000) knlGS:0000000000000000
>>> Jan 15 17:34:30 wip kernel: [ 35.510866] CS: 0010 DS: 0000 ES:
>>> 0000 CR0: 0000000080050033
>>> Jan 15 17:34:30 wip kernel: [ 35.512647] CR2: 0000000000000010
>>> CR3: 0000000186c28006 CR4: 00000000000606e0
>>>
>>>
>>>
>>> --
>>> Best regards, Andy Lavr.
>>>
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>>
>> --
>> Best regards, Andy Lavr.
>>
>> CONFIDENTIAL NOTE
>>
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>
--
Best regards, Andy Lavr.
CONFIDENTIAL NOTE
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and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other
use of, or taking of any action in reliance upon, this information by persons or entities other than the
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result of any virus, error or incompleteness of this e-mail or any failure to deliver promptly or at all
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