[Bug 111729] RX480 : random NULL pointer dereference on resume from suspend

[Bug 111729] RX480 : random NULL pointer dereference on resume from suspend

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=111729

            Bug ID: 111729
           Summary: RX480 : random NULL pointer dereference on resume from
                    suspend
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: not set
         Component: DRM/AMDgpu
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: nmset@netcourrier.com

Created attachment 145421
  --> https://bugs.freedesktop.org/attachment.cgi?id=145421&action=edit
Syslog data

Since kernel 5.2.x, resuming from suspend will randomly crash amdgpu/drm with a
black screen. After login via SSH, rebooting or halting the host will not
complete. A hard reset becomes unavoidable. Currently using 5.3.0-rc8, RX 480
with one single display. Stable 5.2.x kernels don't resolve the issue. The host
does not last a week without a forced reboot.

Please see the attached syslog trace. Thanks.

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[Bug 111729] RX480 : random NULL pointer dereference on resume from suspend

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 296 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=111729

--- Comment #1 from SET <nmset@netcourrier.com> ---
Created attachment 145422
  --> https://bugs.freedesktop.org/attachment.cgi?id=145422&action=edit
Xorg log

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[Bug 111729] RX480 : random NULL pointer dereference on resume from suspend

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 7404 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=111729

--- Comment #2 from phg@phi-gamma.net ---
I can confirm this bug.

Same phenomenology here with 5.2.11, two screens, and a
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Lexa
PRO [Radeon RX 550/550X] (rev c7)


Sep 29 08:26:39 phlegethon kernel: PM: suspend exit
Sep 29 08:26:40 phlegethon kernel: [drm] schedsdma0 is not ready, skipping
Sep 29 08:26:58 phlegethon kernel: [drm] schedsdma1 is not ready, skipping
Sep 29 08:26:58 phlegethon kernel: BUG: kernel NULL pointer dereference,
address: 0000000000000008
Sep 29 08:26:58 phlegethon kernel: #PF: supervisor read access in kernel mode
Sep 29 08:26:58 phlegethon kernel: #PF: error_code(0x0000) - not-present page
Sep 29 08:26:59 phlegethon kernel: PGD 6032ef067 P4D 6032ef067 PUD 603c09067
PMD 0 
Sep 29 08:26:59 phlegethon kernel: Oops: 0000 [#1] SMP NOPTI
Sep 29 08:26:59 phlegethon kernel: CPU: 0 PID: 1429 Comm: X Tainted: G        W
        5.2.11 #1-NixOS
Sep 29 08:26:59 phlegethon kernel: Hardware name: Gigabyte Technology Co., Ltd.
GA-78LMT-USB3 6.0/GA-78LMT-USB3 6.0, BIOS F2 11/25/2014
Sep 29 08:26:59 phlegethon kernel: RIP: 0010:amdgpu_vm_sdma_commit+0x46/0x140
[amdgpu]
Sep 29 08:26:59 phlegethon kernel: Code: 18 65 48 8b 04 25 28 00 00 00 48 89 44
24 08 31 c0 48 8b 47 08 48 8b aa a8 01 00 00 4c 8b a8 80 00 00 00 48 8b 80 c8
00 00 00 <4c> 8b 70 08 8b 45 08 85 c0 4d 8d 7e 88 0f 84 c2 00 00 00 49 8b 46
Sep 29 08:26:59 phlegethon kernel: RSP: 0018:ffff99bb838ffad8 EFLAGS: 00010246
Sep 29 08:26:59 phlegethon kernel: RAX: 0000000000000000 RBX: ffff99bb838ffb20
RCX: 0000000000103c00
Sep 29 08:26:59 phlegethon kernel: RDX: ffff89abd64a4000 RSI: ffff99bb838ffba8
RDI: ffff99bb838ffb20
Sep 29 08:26:59 phlegethon kernel: RBP: ffff89abd64a4210 R08: ffff99bb838ffa6c
R09: ffff99bb838ffa70
Sep 29 08:26:59 phlegethon kernel: R10: 0000000000103804 R11: 0000000000000021
R12: ffff99bb838ffba8
Sep 29 08:26:59 phlegethon kernel: R13: ffff89ac48fc6000 R14: 0000000000103803
R15: 0000000000000000
Sep 29 08:26:59 phlegethon kernel: FS:  00007fd089d18e40(0000)
GS:ffff89ac67a00000(0000) knlGS:0000000000000000
Sep 29 08:26:59 phlegethon kernel: CS:  0010 DS: 0000 ES: 0000 CR0:
0000000080050033
Sep 29 08:26:59 phlegethon kernel: CR2: 0000000000000008 CR3: 0000000603afa000
CR4: 00000000000006f0
Sep 29 08:26:59 phlegethon kernel: Call Trace:
Sep 29 08:26:59 phlegethon kernel:  amdgpu_vm_bo_update_mapping+0xcd/0xe0
[amdgpu]
Sep 29 08:26:59 phlegethon kernel:  amdgpu_vm_clear_freed+0xbe/0x190 [amdgpu]
Sep 29 08:26:59 phlegethon kernel:  amdgpu_gem_va_ioctl+0x488/0x4f0 [amdgpu]
Sep 29 08:26:59 phlegethon kernel:  ? amdgpu_gem_metadata_ioctl+0x1b0/0x1b0
[amdgpu]
Sep 29 08:26:59 phlegethon kernel:  ? drm_ioctl_kernel+0xac/0xf0 [drm]
Sep 29 08:26:59 phlegethon kernel:  drm_ioctl_kernel+0xac/0xf0 [drm]
Sep 29 08:26:59 phlegethon kernel:  ? sock_write_iter+0x8f/0xf0
Sep 29 08:26:59 phlegethon kernel:  drm_ioctl+0x2e6/0x3a0 [drm]
Sep 29 08:26:59 phlegethon kernel:  ? amdgpu_gem_metadata_ioctl+0x1b0/0x1b0
[amdgpu]
Sep 29 08:26:59 phlegethon kernel:  ? do_iter_write+0xe2/0x190
Sep 29 08:26:59 phlegethon kernel:  amdgpu_drm_ioctl+0x49/0x80 [amdgpu]
Sep 29 08:26:59 phlegethon kernel:  do_vfs_ioctl+0xa4/0x630
Sep 29 08:26:59 phlegethon kernel:  ksys_ioctl+0x70/0x80
Sep 29 08:26:59 phlegethon kernel:  __x64_sys_ioctl+0x16/0x20
Sep 29 08:26:59 phlegethon kernel:  do_syscall_64+0x4e/0x130
Sep 29 08:26:59 phlegethon kernel:  entry_SYSCALL_64_after_hwframe+0x44/0xa9
Sep 29 08:26:59 phlegethon kernel: RIP: 0033:0x7fd08a3c4b57
Sep 29 08:26:59 phlegethon kernel: Code: 00 00 00 48 8b 05 29 53 0c 00 64 c7 00
26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00
00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d f9 52 0c 00 f7 d8 64 89 01 48
Sep 29 08:26:59 phlegethon kernel: RSP: 002b:00007fff6a6738b8 EFLAGS: 00000246
ORIG_RAX: 0000000000000010
Sep 29 08:26:59 phlegethon kernel: RAX: ffffffffffffffda RBX: 0000000000000000
RCX: 00007fd08a3c4b57
Sep 29 08:26:59 phlegethon kernel: RDX: 00007fff6a673900 RSI: 00000000c0286448
RDI: 0000000000000012
Sep 29 08:26:59 phlegethon kernel: RBP: 00007fff6a673900 R08: 0000000103400000
R09: 000000000000000e
Sep 29 08:26:59 phlegethon kernel: R10: 0000000000000026 R11: 0000000000000246
R12: 00000000c0286448
Sep 29 08:26:59 phlegethon kernel: R13: 0000000000000012 R14: 0000000000000002
R15: 00000000043d74a0
Sep 29 08:26:59 phlegethon kernel: Modules linked in: fuse bridge stp llc
cfg80211 msr rfkill 8021q ext4 crc16 mbcache jbd2 amdgpu wmi_bmof ppdev
gpu_sched edac_core ttm drm_kms_helper snd_hda_codec_realtek k10temp
snd_hda_codec_generic ledtrig_audio snd_hda_codec_hdmi drm snd_hda_intel joydev
r8169 ata_generic snd_hda_codec sp5100_tco uas agpgart watchdog i2c_algo_bit
pata_acpi evdev fb_sys_fops syscopyarea i2c_piix4 mousedev sysfillrect realtek
sysimgblt mac_hid snd_hda_core backlight libphy i2c_core parport_pc snd_hwdep
parport wmi button pcc_cpufreq acpi_cpufreq iptable_nat nf_nat xt_conntrack
nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip6t_rpfilter ipt_rpfilter
ip6table_raw iptable_raw xt_pkttype nf_log_ipv6 nf_log_ipv4 nf_log_common
xt_LOG xt_tcpudp ip6table_filter ip6_tables iptable_filter snd_pcm_oss
snd_mixer_oss snd_pcm snd_timer snd soundcore atkbd libps2 serio loop
cpufreq_ondemand edac_mce_amd kvm irqbypass ip_tables x_tables ipv6 crc_ccitt
autofs4 crypto_simd cryptd glue_helper input_leds led_class
Sep 29 08:26:59 phlegethon kernel:  usb_storage sd_mod xhci_pci pata_atiixp
ahci xhci_hcd ohci_pci libahci libata ehci_pci ohci_hcd scsi_mod ehci_hcd
rtc_cmos aes_x86_64 serpent_generic btrfs zstd_decompress zstd_compress
libcrc32c crc32c_generic xor raid6_pq dm_crypt dm_mod usbhid usbcore usb_common
hid_generic hid_microsoft ff_memless hid
Sep 29 08:26:59 phlegethon kernel: CR2: 0000000000000008
Sep 29 08:26:59 phlegethon kernel: ---[ end trace b0432b776c251e2d ]---
Sep 29 08:26:59 phlegethon kernel: RIP: 0010:amdgpu_vm_sdma_commit+0x46/0x140
[amdgpu]
Sep 29 08:26:59 phlegethon kernel: Code: 18 65 48 8b 04 25 28 00 00 00 48 89 44
24 08 31 c0 48 8b 47 08 48 8b aa a8 01 00 00 4c 8b a8 80 00 00 00 48 8b 80 c8
00 00 00 <4c> 8b 70 08 8b 45 08 85 c0 4d 8d 7e 88 0f 84 c2 00 00 00 49 8b 46
Sep 29 08:26:59 phlegethon kernel: RSP: 0018:ffff99bb838ffad8 EFLAGS: 00010246
Sep 29 08:26:59 phlegethon kernel: RAX: 0000000000000000 RBX: ffff99bb838ffb20
RCX: 0000000000103c00
Sep 29 08:26:59 phlegethon kernel: RDX: ffff89abd64a4000 RSI: ffff99bb838ffba8
RDI: ffff99bb838ffb20
Sep 29 08:26:59 phlegethon kernel: RBP: ffff89abd64a4210 R08: ffff99bb838ffa6c
R09: ffff99bb838ffa70
Sep 29 08:26:59 phlegethon kernel: R10: 0000000000103804 R11: 0000000000000021
R12: ffff99bb838ffba8
Sep 29 08:26:59 phlegethon kernel: R13: ffff89ac48fc6000 R14: 0000000000103803
R15: 0000000000000000
Sep 29 08:26:59 phlegethon kernel: FS:  00007fd089d18e40(0000)
GS:ffff89ac67a00000(0000) knlGS:0000000000000000
Sep 29 08:26:59 phlegethon kernel: CS:  0010 DS: 0000 ES: 0000 CR0:
0000000080050033
Sep 29 08:26:59 phlegethon kernel: CR2: 0000000000000008 CR3: 0000000603afa000
CR4: 00000000000006f0
Sep 29 08:30:10 phlegethon kernel: sysrq: Keyboard mode set to system default

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[Bug 111729] RX480 : random NULL pointer dereference on resume from suspend

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 556 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=111729

me@cschwarz.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |me@cschwarz.com

--- Comment #3 from me@cschwarz.com ---
Can also confirm this bug, doesn't happen on 4.20.16-200.fc29.x86_64, which is
the last fc29 kernel. All 5.X series fc30 kernels seem to be affected.

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[Bug 111729] RX480 : random NULL pointer dereference on resume from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=111729

--- Comment #4 from Alex Deucher <alexdeucher@gmail.com> ---
Can you bisect?

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[Bug 111729] RX480 : random NULL pointer dereference on resume from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=111729

--- Comment #5 from SET <nmset@netcourrier.com> ---
(In reply to Alex Deucher from comment #4)
> Can you bisect?

Bisecting would be of great help. I doubt it's feasible in practice. The bug
happens after an undetermined number of syspend/resume cycles. It would take
weeks or months to isolate the searched patch. By that time, it may well become
invalid due to other changes.

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[Bug 111729] RX480 : random NULL pointer dereference on resume from suspend

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[-- Attachment #1.1: Type: text/plain, Size: 388 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=111729

--- Comment #6 from phg@phi-gamma.net ---
I agree with SET that bisecting would not be feasible due to
the rarity of the bug. For reference, the affected box just
now crashed after a week of no issue with suspending and
resuming approx. twice a day.

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[Bug 111729] RX480 : random NULL pointer dereference on resume from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=111729

--- Comment #7 from me@cschwarz.com ---
I began bisecting yesterday and discovered another bug that happens on suspend,
which makes it hard to determine the good/bad status of a build with regards to
_this_ bug in a timely manner.
Hence aborting any bisection attempts.

Maybe a new crowd of people runs into this when upgrading their Ubuntu LTS
systems :(

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[Bug 111729] RX480 : random NULL pointer dereference on resume from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=111729

--- Comment #8 from me@cschwarz.com ---
There is a correspnding bug report on the Gentoo users forum:

https://forums.gentoo.org/viewtopic-p-8375988.html#8375988

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[Bug 111729] RX480 : random NULL pointer dereference on resume from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=111729

--- Comment #9 from me@cschwarz.com ---
Potential fix (and kernel Bugzilla bug):
https://bugzilla.kernel.org/show_bug.cgi?id=204241

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[Bug 111729] RX480 : random NULL pointer dereference on resume from suspend

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https://bugs.freedesktop.org/show_bug.cgi?id=111729

Martin Peres <martin.peres@free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |MOVED
             Status|NEW                         |RESOLVED

--- Comment #10 from Martin Peres <martin.peres@free.fr> ---
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been
closed from further activity.

You can subscribe and participate further through the new bug through this link
to our GitLab instance: https://gitlab.freedesktop.org/drm/amd/issues/909.

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