Comment # 2
on bug 111729
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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