[Re] kernel panic during shutdown in v7.2-rc{3,4} and next-20260722 with PREEMPT_RT

[Re] kernel panic during shutdown in v7.2-rc{3,4} and next-20260722 with PREEMPT_RT

[Bert Karwatzki]

I was able to gather the panic error message from a failed shutdown via netconsole,
this time the kernel used was v7.2-rc3:

T6298;netconsole: network logging started
T6298;netconsole-setup: Test log message to verify netconsole configuration.
T1575;BUG: scheduling while atomic: Xorg/1575/0x00000003
T1575,ncfrag=0/979;Modules linked in: netconsole ccm snd_seq_dummy snd_hrtimer snd_seq nls_ascii nls_cp437 vfat fat joydev snd_usb_audio mt7925e mt7925_common snd_usbmidi_lib snd_ump mt792x_lib snd_rawmidi mt76_connac_lib snd_seq_device intel_rapl_msr iosf_mbi mt76 intel_rapl_common rapl mac80211 snd_hda_codec_atihdmi snd_hda_codec_hdmi pcspkr wmi_bmof snd_hda_intel snd_hda_codec libarc4 snd_hda_core cfg80211 snd_intel_dspcfg snd_hwdep snd_pcm spd5118 regmap_i2c snd_timer snd rfkill soundcore aead evdev k10temp ccp nct6775 nct6775_core hwmon_vid configfs efi_pstore efivarfs autofs4 ext4 mbcache jbd2 amdgpu hid_generic usbhid hid drm_client_lib i2c_algo_bit drm_buddy drm_ttm_helper ttm drm_exec drm_suballoc_helper mfd_core drm_panel_backlight_quirks gpu_sched amdxcp drm_display_helper ahci libahci xhci_pci libata xhci_hcd drm_kms_helper drm scsi_mod igc nvme usbcore cec scsi_common nvme_core crc16 video nvme_keyring gpio_amdpt i2c_piix4 nvme_auth usb_common gpi
T1575,ncfrag=955/979;o_generic i2c_smbus wmi
T1575;CPU: 16 UID: 0 PID: 1575 Comm: Xorg Not tainted 7.2.0-rc3-stable #1255 PREEMPT_{RT,(full)} 
T1575;Hardware name: ASUS System Product Name/ROG STRIX B850-F GAMING WIFI, BIOS 1627 02/05/2026
T1575;Call Trace:
T1575; <TASK>
T1575; ? dump_stack_lvl+0x4b/0x70
T1575; ? __schedule_bug.cold+0x3e/0x4a
T1575; ? __schedule+0xf64/0x16f0
T1575; ? schedule_rtlock+0x15/0x30
T1575; ? rtlock_slowlock_locked+0x30c/0xe50
T1575; ? rt_spin_lock+0xc3/0x120
T1575; ? get_page_from_freelist+0x22e/0x1640
T1575; ? __alloc_frozen_pages_noprof+0x146/0x2b0
T1575; ? ___kmalloc_large_node+0xae/0xd0
T1575; ? __kvmalloc_node_noprof+0x36c/0x580
T1575; ? dc_create_plane_state+0x24/0x80 [amdgpu]
T1575; ? dc_create_plane_state+0x24/0x80 [amdgpu]
T1575; ? dc_state_create_phantom_plane+0x15/0x50 [amdgpu]
T1575; ? dml21_handle_phantom_streams_planes+0x292/0x510 [amdgpu]
T1575; ? dml21_mode_check_and_programming+0x157/0x7e0 [amdgpu]
T1575; ? try_to_wake_up+0x120/0x530
T1575; ? rt_mutex_setprio+0x61/0x340
T1575; ? calculate_plane_rec_in_timing_active+0x142/0x1f0 [amdgpu]
T1575; ? spl_calculate_number_of_taps.constprop.0.isra.0+0x142/0xf00 [amdgpu]
T1575; ? spl_calculate_number_of_taps.constprop.0.isra.0+0xed4/0xf00 [amdgpu]
T1575; ? dcn401_validate_bandwidth+0xb8/0x1f0 [amdgpu]
T1575; ? dc_validate_with_context+0x5ed/0x6b0 [amdgpu]
T1575; ? dc_commit_streams+0x27c/0x4e0 [amdgpu]
T1575; ? amdgpu_dm_atomic_commit_tail+0x61f/0x3650 [amdgpu]
T1575; ? generic_reg_get+0x1c/0x30 [amdgpu]
T1575; ? optc1_get_crtc_scanoutpos+0x5f/0xa0 [amdgpu]
T1575; ? dc_stream_get_scanoutpos+0x7a/0xc0 [amdgpu]
T1575; ? amdgpu_display_get_crtc_scanoutpos+0xa5/0x1c0 [amdgpu]
T1575; ? amdgpu_display_crtc_idx_to_irq_type+0x30/0x30 [amdgpu]
T1575; ? amdgpu_crtc_get_scanout_position+0x23/0x30 [amdgpu]
T1575; ? drm_crtc_vblank_helper_get_vblank_timestamp_internal+0x180/0x3b0 [drm]
T1575; ? wait_for_completion_timeout+0x127/0x170
T1575; ? drm_crtc_get_last_vbltimestamp+0x50/0x80 [drm]
T1575; ? commit_tail+0xad/0x140 [drm_kms_helper]
T1575; ? drm_atomic_helper_commit+0x137/0x180 [drm_kms_helper]
T1575; ? drm_atomic_commit+0xac/0xe0 [drm]
T1575; ? __drm_universal_plane_init.cold+0x11/0x11 [drm]
T1575; ? drm_atomic_helper_set_config+0x6f/0xb0 [drm_kms_helper]
T1575; ? drm_mode_setcrtc+0x443/0x8b0 [drm]
T1575; ? drm_mode_getcrtc+0x180/0x180 [drm]
T1575; ? drm_ioctl_kernel+0xa1/0xf0 [drm]
T1575; ? drm_ioctl+0x27f/0x500 [drm]
T1575; ? drm_mode_getcrtc+0x180/0x180 [drm]
T1575; ? amdgpu_drm_ioctl+0x45/0x80 [amdgpu]
T1575; ? __x64_sys_ioctl+0x92/0xe0
T1575; ? do_syscall_64+0xdd/0x5d0
T1575; ? do_syscall_64+0x94/0x5d0
T1575; ? entry_SYSCALL_64_after_hwframe+0x55/0x5d
T1575; </TASK>
T1575;------------[ cut here ]------------
T1575;WARNING: drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/dc_fpu.c:126 at dc_fpu_end+0x36/0x40 [amdgpu], CPU#22: Xorg/1575
T1575,ncfrag=0/979;Modules linked in: netconsole ccm snd_seq_dummy snd_hrtimer snd_seq nls_ascii nls_cp437 vfat fat joydev snd_usb_audio mt7925e mt7925_common snd_usbmidi_lib snd_ump mt792x_lib snd_rawmidi mt76_connac_lib snd_seq_device intel_rapl_msr iosf_mbi mt76 intel_rapl_common rapl mac80211 snd_hda_codec_atihdmi snd_hda_codec_hdmi pcspkr wmi_bmof snd_hda_intel snd_hda_codec libarc4 snd_hda_core cfg80211 snd_intel_dspcfg snd_hwdep snd_pcm spd5118 regmap_i2c snd_timer snd rfkill soundcore aead evdev k10temp ccp nct6775 nct6775_core hwmon_vid configfs efi_pstore efivarfs autofs4 ext4 mbcache jbd2 amdgpu hid_generic usbhid hid drm_client_lib i2c_algo_bit drm_buddy drm_ttm_helper ttm drm_exec drm_suballoc_helper mfd_core drm_panel_backlight_quirks gpu_sched amdxcp drm_display_helper ahci libahci xhci_pci libata xhci_hcd drm_kms_helper drm scsi_mod igc nvme usbcore cec scsi_common nvme_core crc16 video nvme_keyring gpio_amdpt i2c_piix4 nvme_auth usb_common gpi
T1575,ncfrag=955/979;o_generic i2c_smbus wmi
T1575;CPU: 22 UID: 0 PID: 1575 Comm: Xorg Tainted: G        W           7.2.0-rc3-stable #1255 PREEMPT_{RT,(full)} 
T1575;Tainted: [W]=WARN
T1575;Hardware name: ASUS System Product Name/ROG STRIX B850-F GAMING WIFI, BIOS 1627 02/05/2026
T1575;RIP: 0010:dc_fpu_end+0x36/0x40 [amdgpu]
T1575;Code: 05 cf e5 16 e6 ff c8 74 10 78 1f 65 ff 0d f2 d5 15 e6 74 0c c3 cc cc cc cc e8 16 9c 12 e5 eb eb e8 6f 10 11 e5 c3 cc cc cc cc <0f> 0b eb dd 66 0f 1f 44 00 00 41 56 41 55 41 54 55 53 48 83 ec 10
T1575;RSP: 0018:ffffa11ac5bfb638 EFLAGS: 00010296
T1575;RAX: 00000000ffffffff RBX: ffff9490f7480000 RCX: 0000000000000008
T1575;RDX: 0000000000000000 RSI: 0000000000000719 RDI: ffffffffc15b3550
T1575;RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001
T1575;R10: ffff9490f7480000 R11: 0000000000000002 R12: ffff948e09668000
T1575;R13: ffff948e11400000 R14: 0000000000000000 R15: 0000000000000001
T1575;FS:  00007f2b496ccb80(0000) GS:ffff949d96af5000(0000) knlGS:0000000000000000
T1575;CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
T1575;CR2: 0000557ef27b3000 CR3: 000000011543b000 CR4: 0000000000f50ef0
T1575;PKRU: 55555554
T1575;Call Trace:
T1575; <TASK>
T1575; ? dcn401_validate_bandwidth+0xd1/0x1f0 [amdgpu]
T1575; ? dc_validate_with_context+0x5ed/0x6b0 [amdgpu]
T1575; ? dc_commit_streams+0x27c/0x4e0 [amdgpu]
T1575; ? amdgpu_dm_atomic_commit_tail+0x61f/0x3650 [amdgpu]
T1575; ? generic_reg_get+0x1c/0x30 [amdgpu]
T1575; ? optc1_get_crtc_scanoutpos+0x5f/0xa0 [amdgpu]
T1575; ? dc_stream_get_scanoutpos+0x7a/0xc0 [amdgpu]
T1575; ? amdgpu_display_get_crtc_scanoutpos+0xa5/0x1c0 [amdgpu]
T1575; ? amdgpu_display_crtc_idx_to_irq_type+0x30/0x30 [amdgpu]
T1575; ? amdgpu_crtc_get_scanout_position+0x23/0x30 [amdgpu]
T1575; ? drm_crtc_vblank_helper_get_vblank_timestamp_internal+0x180/0x3b0 [drm]
T1575; ? wait_for_completion_timeout+0x127/0x170
T1575; ? drm_crtc_get_last_vbltimestamp+0x50/0x80 [drm]
T1575; ? commit_tail+0xad/0x140 [drm_kms_helper]
T1575; ? drm_atomic_helper_commit+0x137/0x180 [drm_kms_helper]
T1575; ? drm_atomic_commit+0xac/0xe0 [drm]
T1575; ? __drm_universal_plane_init.cold+0x11/0x11 [drm]
T1575; ? drm_atomic_helper_set_config+0x6f/0xb0 [drm_kms_helper]
T1575; ? drm_mode_setcrtc+0x443/0x8b0 [drm]
T1575; ? drm_mode_getcrtc+0x180/0x180 [drm]
T1575; ? drm_ioctl_kernel+0xa1/0xf0 [drm]
T1575; ? drm_ioctl+0x27f/0x500 [drm]
T1575; ? drm_mode_getcrtc+0x180/0x180 [drm]
T1575; ? amdgpu_drm_ioctl+0x45/0x80 [amdgpu]
T1575; ? __x64_sys_ioctl+0x92/0xe0
T1575; ? do_syscall_64+0xdd/0x5d0
T1575; ? do_syscall_64+0x94/0x5d0
T1575; ? entry_SYSCALL_64_after_hwframe+0x55/0x5d
T1575; </TASK>
T1575;---[ end trace 0000000000000000 ]---
T1575;------------[ cut here ]------------
T1575;WARNING: drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/dc_fpu.c:97 at dc_fpu_begin+0x4f/0x60 [amdgpu], CPU#17: Xorg/1575
T1575,ncfrag=0/979;Modules linked in: netconsole ccm snd_seq_dummy snd_hrtimer snd_seq nls_ascii nls_cp437 vfat fat joydev snd_usb_audio mt7925e mt7925_common snd_usbmidi_lib snd_ump mt792x_lib snd_rawmidi mt76_connac_lib snd_seq_device intel_rapl_msr iosf_mbi mt76 intel_rapl_common rapl mac80211 snd_hda_codec_atihdmi snd_hda_codec_hdmi pcspkr wmi_bmof snd_hda_intel snd_hda_codec libarc4 snd_hda_core cfg80211 snd_intel_dspcfg snd_hwdep snd_pcm spd5118 regmap_i2c snd_timer snd rfkill soundcore aead evdev k10temp ccp nct6775 nct6775_core hwmon_vid configfs efi_pstore efivarfs autofs4 ext4 mbcache jbd2 amdgpu hid_generic usbhid hid drm_client_lib i2c_algo_bit drm_buddy drm_ttm_helper ttm drm_exec drm_suballoc_helper mfd_core drm_panel_backlight_quirks gpu_sched amdxcp drm_display_helper ahci libahci xhci_pci libata xhci_hcd drm_kms_helper drm scsi_mod igc nvme usbcore cec scsi_common nvme_core crc16 video nvme_keyring gpio_amdpt i2c_piix4 nvme_auth usb_common gpi
T1575,ncfrag=955/979;o_generic i2c_smbus wmi
T1575;CPU: 17 UID: 0 PID: 1575 Comm: Xorg Tainted: G        W           7.2.0-rc3-stable #1255 PREEMPT_{RT,(full)} 
T1575;Tainted: [W]=WARN
T1575;Hardware name: ASUS System Product Name/ROG STRIX B850-F GAMING WIFI, BIOS 1627 02/05/2026
T1575;RIP: 0010:dc_fpu_begin+0x4f/0x60 [amdgpu]
T1575;Code: d0 75 27 65 ff 05 41 d6 15 e6 b8 01 00 00 00 65 0f c1 05 04 e6 16 e6 85 c0 74 05 c3 cc cc cc cc bf 02 00 00 00 e9 d1 9c 12 e5 <0f> 0b eb d5 66 90 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 d6 b8
T1575;RSP: 0018:ffffa11ac5bfb6c8 EFLAGS: 00010206
T1575;RAX: 0000000000ff0000 RBX: ffff949040380000 RCX: ffff9490a92f96a0
T1575;RDX: 0000000000ff0000 RSI: 000000000000011f RDI: ffffffffc15de7a0
T1575;RBP: ffff948e14700000 R08: ffffffffa6d02440 R09: 0000000000000006
T1575;R10: ffffffffa6eb6440 R11: 0000000000000066 R12: ffff949040380000
T1575;R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000
T1575;FS:  00007f2b496ccb80(0000) GS:ffff949d969b5000(0000) knlGS:0000000000000000
T1575;CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
T1575;CR2: 00007fb5ea0bfa7c CR3: 000000011543b000 CR4: 0000000000f50ef0
T1575;PKRU: 55555554
T1575;Call Trace:
T1575; <TASK>
T1575; ? dc_state_create_copy+0x76/0x120 [amdgpu]
T1575; ? dc_commit_state_no_check+0x271/0xe00 [amdgpu]
T1575; ? dc_commit_streams+0x2f4/0x4e0 [amdgpu]
T1575; ? amdgpu_dm_atomic_commit_tail+0x61f/0x3650 [amdgpu]
T1575; ? generic_reg_get+0x1c/0x30 [amdgpu]
T1575; ? optc1_get_crtc_scanoutpos+0x5f/0xa0 [amdgpu]
T1575; ? dc_stream_get_scanoutpos+0x7a/0xc0 [amdgpu]
T1575; ? amdgpu_display_get_crtc_scanoutpos+0xa5/0x1c0 [amdgpu]
T1575; ? amdgpu_display_crtc_idx_to_irq_type+0x30/0x30 [amdgpu]
T1575; ? amdgpu_crtc_get_scanout_position+0x23/0x30 [amdgpu]
T1575; ? drm_crtc_vblank_helper_get_vblank_timestamp_internal+0x180/0x3b0 [drm]
T1575; ? wait_for_completion_timeout+0x127/0x170
T1575; ? drm_crtc_get_last_vbltimestamp+0x50/0x80 [drm]
T1575; ? commit_tail+0xad/0x140 [drm_kms_helper]
T1575; ? drm_atomic_helper_commit+0x137/0x180 [drm_kms_helper]
T1575; ? drm_atomic_commit+0xac/0xe0 [drm]
T1575; ? __drm_universal_plane_init.cold+0x11/0x11 [drm]
T1575; ? drm_atomic_helper_set_config+0x6f/0xb0 [drm_kms_helper]
T1575; ? drm_mode_setcrtc+0x443/0x8b0 [drm]
T1575; ? drm_mode_getcrtc+0x180/0x180 [drm]
T1575; ? drm_ioctl_kernel+0xa1/0xf0 [drm]
T1575; ? drm_ioctl+0x27f/0x500 [drm]
T1575; ? drm_mode_getcrtc+0x180/0x180 [drm]
T1575; ? amdgpu_drm_ioctl+0x45/0x80 [amdgpu]
T1575; ? __x64_sys_ioctl+0x92/0xe0
T1575; ? do_syscall_64+0xdd/0x5d0
T1575; ? do_syscall_64+0x94/0x5d0
T1575; ? entry_SYSCALL_64_after_hwframe+0x55/0x5d
T1575; </TASK>
T1575;---[ end trace 0000000000000000 ]---
T1575;------------[ cut here ]------------
T1575;kernel BUG at mm/vmalloc.c:3206!
T1575;Oops: invalid opcode: 0000 [#1] SMP NOPTI
T1575;CPU: 17 UID: 0 PID: 1575 Comm: Xorg Tainted: G        W           7.2.0-rc3-stable #1255 PREEMPT_{RT,(full)} 
T1575;Tainted: [W]=WARN
T1575;Hardware name: ASUS System Product Name/ROG STRIX B850-F GAMING WIFI, BIOS 1627 02/05/2026
T1575;RIP: 0010:__get_vm_area_node+0x113/0x130
T1575;Code: ff bd ff ff ff ff 48 0f bd e8 b8 0c 00 00 00 ff c5 39 c5 0f 4c e8 b8 1e 00 00 00 39 c5 0f 4f e8 c4 e2 d1 f7 ee e9 34 ff ff ff <0f> 0b 4c 89 ef e8 e3 46 01 00 45 31 ed eb ae 0f 1f 00 66 66 2e 0f
T1575;RSP: 0018:ffffa11ac5bfb580 EFLAGS: 00010286
T1575;RAX: 00000000ffffffff RBX: 0000000000000001 RCX: 0000000000000022
T1575;RDX: 000000000000000c RSI: 0000000000000001 RDI: 000000000000f720
T1575;RBP: 000000000000000c R08: ffffa11ac0000000 R09: ffffc11abfffffff
T1575;R10: 00000000ffffffff R11: 0000000000000066 R12: ffff949040380000
T1575;R13: 0000000000000001 R14: 0000000000000dc0 R15: 000000000000f720
T1575;FS:  00007f2b496ccb80(0000) GS:ffff949d969b5000(0000) knlGS:0000000000000000
T1575;CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
T1575;CR2: 00007fb5ea0bfa7c CR3: 000000011543b000 CR4: 0000000000f50ef0
T1575;PKRU: 55555554
T1575;Call Trace:
T1575; <TASK>
T1575; ? __vmalloc_node_range_noprof+0x14a/0x920
T1575; ? dml21_allocate_memory+0x124/0x180 [amdgpu]
T1575; ? dc_fpu_begin+0x51/0x60 [amdgpu]
T1575; ? dml21_allocate_memory+0x124/0x180 [amdgpu]
T1575; ? asm_exc_invalid_op+0x1a/0x20
T1575; ? __vmalloc_node_noprof+0x47/0x60
T1575; ? dml21_allocate_memory+0x124/0x180 [amdgpu]
T1575; ? dml21_allocate_memory+0x124/0x180 [amdgpu]
T1575; ? dml21_create_copy+0x16/0x40 [amdgpu]
T1575; ? dc_state_create_copy+0x89/0x120 [amdgpu]
T1575; ? dc_commit_state_no_check+0x271/0xe00 [amdgpu]
T1575; ? dc_commit_streams+0x2f4/0x4e0 [amdgpu]
T1575; ? amdgpu_dm_atomic_commit_tail+0x61f/0x3650 [amdgpu]
T1575; ? generic_reg_get+0x1c/0x30 [amdgpu]
T1575; ? optc1_get_crtc_scanoutpos+0x5f/0xa0 [amdgpu]
T1575; ? dc_stream_get_scanoutpos+0x7a/0xc0 [amdgpu]
T1575; ? amdgpu_display_get_crtc_scanoutpos+0xa5/0x1c0 [amdgpu]
T1575; ? amdgpu_display_crtc_idx_to_irq_type+0x30/0x30 [amdgpu]
T1575; ? amdgpu_crtc_get_scanout_position+0x23/0x30 [amdgpu]
T1575; ? drm_crtc_vblank_helper_get_vblank_timestamp_internal+0x180/0x3b0 [drm]
T1575; ? wait_for_completion_timeout+0x127/0x170
T1575; ? drm_crtc_get_last_vbltimestamp+0x50/0x80 [drm]
T1575; ? commit_tail+0xad/0x140 [drm_kms_helper]
T1575; ? drm_atomic_helper_commit+0x137/0x180 [drm_kms_helper]
T1575; ? drm_atomic_commit+0xac/0xe0 [drm]
T1575; ? __drm_universal_plane_init.cold+0x11/0x11 [drm]
T1575; ? drm_atomic_helper_set_config+0x6f/0xb0 [drm_kms_helper]
T1575; ? drm_mode_setcrtc+0x443/0x8b0 [drm]
T1575; ? drm_mode_getcrtc+0x180/0x180 [drm]
T1575; ? drm_ioctl_kernel+0xa1/0xf0 [drm]
T1575; ? drm_ioctl+0x27f/0x500 [drm]
T1575; ? drm_mode_getcrtc+0x180/0x180 [drm]
T1575; ? amdgpu_drm_ioctl+0x45/0x80 [amdgpu]
T1575; ? __x64_sys_ioctl+0x92/0xe0
T1575; ? do_syscall_64+0xdd/0x5d0
T1575; ? do_syscall_64+0x94/0x5d0
T1575; ? entry_SYSCALL_64_after_hwframe+0x55/0x5d
T1575; </TASK>
T1575,ncfrag=0/979;Modules linked in: netconsole ccm snd_seq_dummy snd_hrtimer snd_seq nls_ascii nls_cp437 vfat fat joydev snd_usb_audio mt7925e mt7925_common snd_usbmidi_lib snd_ump mt792x_lib snd_rawmidi mt76_connac_lib snd_seq_device intel_rapl_msr iosf_mbi mt76 intel_rapl_common rapl mac80211 snd_hda_codec_atihdmi snd_hda_codec_hdmi pcspkr wmi_bmof snd_hda_intel snd_hda_codec libarc4 snd_hda_core cfg80211 snd_intel_dspcfg snd_hwdep snd_pcm spd5118 regmap_i2c snd_timer snd rfkill soundcore aead evdev k10temp ccp nct6775 nct6775_core hwmon_vid configfs efi_pstore efivarfs autofs4 ext4 mbcache jbd2 amdgpu hid_generic usbhid hid drm_client_lib i2c_algo_bit drm_buddy drm_ttm_helper ttm drm_exec drm_suballoc_helper mfd_core drm_panel_backlight_quirks gpu_sched amdxcp drm_display_helper ahci libahci xhci_pci libata xhci_hcd drm_kms_helper drm scsi_mod igc nvme usbcore cec scsi_common nvme_core crc16 video nvme_keyring gpio_amdpt i2c_piix4 nvme_auth usb_common gpi
T1575,ncfrag=955/979;o_generic i2c_smbus wmi
T1575;---[ end trace 0000000000000000 ]---
T1575;------------[ cut here ]------------
T1575;WARNING: kernel/printk/nbcon.c:1739 at nbcon_cpu_emergency_exit+0x85/0xa0, CPU#23: Xorg/1575
T1575,ncfrag=0/979;Modules linked in: netconsole ccm snd_seq_dummy snd_hrtimer snd_seq nls_ascii nls_cp437 vfat fat joydev snd_usb_audio mt7925e mt7925_common snd_usbmidi_lib snd_ump mt792x_lib snd_rawmidi mt76_connac_lib snd_seq_device intel_rapl_msr iosf_mbi mt76 intel_rapl_common rapl mac80211 snd_hda_codec_atihdmi snd_hda_codec_hdmi pcspkr wmi_bmof snd_hda_intel snd_hda_codec libarc4 snd_hda_core cfg80211 snd_intel_dspcfg snd_hwdep snd_pcm spd5118 regmap_i2c snd_timer snd rfkill soundcore aead evdev k10temp ccp nct6775 nct6775_core hwmon_vid configfs efi_pstore efivarfs autofs4 ext4 mbcache jbd2 amdgpu hid_generic usbhid hid drm_client_lib i2c_algo_bit drm_buddy drm_ttm_helper ttm drm_exec drm_suballoc_helper mfd_core drm_panel_backlight_quirks gpu_sched amdxcp drm_display_helper ahci libahci xhci_pci libata xhci_hcd drm_kms_helper drm scsi_mod igc nvme usbcore cec scsi_common nvme_core crc16 video nvme_keyring gpio_amdpt i2c_piix4 nvme_auth usb_common gpi
T1575,ncfrag=955/979;o_generic i2c_smbus wmi
T1575;CPU: 23 UID: 0 PID: 1575 Comm: Xorg Tainted: G      D W           7.2.0-rc3-stable #1255 PREEMPT_{RT,(full)} 
T1575;Tainted: [D]=DIE, [W]=WARN
T1575;Hardware name: ASUS System Product Name/ROG STRIX B850-F GAMING WIFI, BIOS 1627 02/05/2026
T1575;RIP: 0010:nbcon_cpu_emergency_exit+0x85/0xa0
T1575;Code: 75 38 48 83 c4 10 c3 cc cc cc cc 48 8d 7c 24 04 e8 e0 ef ff ff 80 7c 24 05 00 74 ce e8 74 fc ff ff eb c7 e8 8d 67 f2 ff eb c9 <0f> 0b 8b 05 43 6a fc 00 85 c0 75 a2 0f 0b eb b0 e8 16 15 8b 00 66
T1575;RSP: 0018:ffffa11ac5bfb3f8 EFLAGS: 00010246
T1575;RAX: 0000000000000000 RBX: 000000000000000b RCX: 0000000000000000
T1575;RDX: ffff949d3d9db204 RSI: 0000000000000001 RDI: ffff949d3d9db040
T1575;RBP: 0000000000000246 R08: 0000000000000000 R09: 3fffffffffffdfff
T1575;R10: ffffffffa6ed4e20 R11: ffffa11ac5bfb200 R12: ffffa11ac5bfb4d8
T1575;R13: ffffffffa60d2ad3 R14: 0000000000000002 R15: 0000000000000004
T1575;FS:  00007f2b496ccb80(0000) GS:ffff949d96b35000(0000) knlGS:0000000000000000
T1575;CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
T1575;CR2: 0000557ef2780ef8 CR3: 000000011543b000 CR4: 0000000000f50ef0
T1575;PKRU: 55555554
T1575;Call Trace:
T1575; <TASK>
T1575; ? oops_exit.cold+0x13/0x1f
T1575; ? oops_end+0x66/0xe0
T1575; ? do_trap+0xc5/0x110
T1575; ? do_error_trap+0x60/0x80
T1575; ? __get_vm_area_node+0x113/0x130
T1575; ? exc_invalid_op+0x4f/0x70
T1575; ? __get_vm_area_node+0x113/0x130
T1575; ? asm_exc_invalid_op+0x1a/0x20
T1575; ? __get_vm_area_node+0x113/0x130
T1575; ? __vmalloc_node_range_noprof+0x14a/0x920
T1575; ? dml21_allocate_memory+0x124/0x180 [amdgpu]
T1575; ? dc_fpu_begin+0x51/0x60 [amdgpu]
T1575; ? dml21_allocate_memory+0x124/0x180 [amdgpu]
T1575; ? asm_exc_invalid_op+0x1a/0x20
T1575; ? __vmalloc_node_noprof+0x47/0x60
T1575; ? dml21_allocate_memory+0x124/0x180 [amdgpu]
T1575; ? dml21_allocate_memory+0x124/0x180 [amdgpu]
T1575; ? dml21_create_copy+0x16/0x40 [amdgpu]
T1575; ? dc_state_create_copy+0x89/0x120 [amdgpu]
T1575; ? dc_commit_state_no_check+0x271/0xe00 [amdgpu]
T1575; ? dc_commit_streams+0x2f4/0x4e0 [amdgpu]
T1575; ? amdgpu_dm_atomic_commit_tail+0x61f/0x3650 [amdgpu]
T1575; ? generic_reg_get+0x1c/0x30 [amdgpu]
T1575; ? optc1_get_crtc_scanoutpos+0x5f/0xa0 [amdgpu]
T1575; ? dc_stream_get_scanoutpos+0x7a/0xc0 [amdgpu]
T1575; ? amdgpu_display_get_crtc_scanoutpos+0xa5/0x1c0 [amdgpu]
T1575; ? amdgpu_display_crtc_idx_to_irq_type+0x30/0x30 [amdgpu]
T1575; ? amdgpu_crtc_get_scanout_position+0x23/0x30 [amdgpu]
T1575; ? drm_crtc_vblank_helper_get_vblank_timestamp_internal+0x180/0x3b0 [drm]
T1575; ? wait_for_completion_timeout+0x127/0x170
T1575; ? drm_crtc_get_last_vbltimestamp+0x50/0x80 [drm]
T1575; ? commit_tail+0xad/0x140 [drm_kms_helper]
T1575; ? drm_atomic_helper_commit+0x137/0x180 [drm_kms_helper]
T1575; ? drm_atomic_commit+0xac/0xe0 [drm]
T1575; ? __drm_universal_plane_init.cold+0x11/0x11 [drm]
T1575; ? drm_atomic_helper_set_config+0x6f/0xb0 [drm_kms_helper]
T1575; ? drm_mode_setcrtc+0x443/0x8b0 [drm]
T1575; ? drm_mode_getcrtc+0x180/0x180 [drm]
T1575; ? drm_ioctl_kernel+0xa1/0xf0 [drm]
T1575; ? drm_ioctl+0x27f/0x500 [drm]
T1575; ? drm_mode_getcrtc+0x180/0x180 [drm]
T1575; ? amdgpu_drm_ioctl+0x45/0x80 [amdgpu]
T1575; ? __x64_sys_ioctl+0x92/0xe0
T1575; ? do_syscall_64+0xdd/0x5d0
T1575; ? do_syscall_64+0x94/0x5d0
T1575; ? entry_SYSCALL_64_after_hwframe+0x55/0x5d
T1575; </TASK>
T1575;---[ end trace 0000000000000000 ]---
C23;RIP: 0010:__get_vm_area_node+0x113/0x130
C5;Code: ff bd ff ff ff ff 48 0f bd e8 b8 0c 00 00 00 ff c5 39 c5 0f 4c e8 b8 1e 00 00 00 39 c5 0f 4f e8 c4 e2 d1 f7 ee e9 34 ff ff ff <0f> 0b 4c 89 ef e8 e3 46 01 00 45 31 ed eb ae 0f 1f 00 66 66 2e 0f
C5;RSP: 0018:ffffa11ac5bfb580 EFLAGS: 00010286
C5;RAX: 00000000ffffffff RBX: 0000000000000001 RCX: 0000000000000022
C5;RDX: 000000000000000c RSI: 0000000000000001 RDI: 000000000000f720
C5;RBP: 000000000000000c R08: ffffa11ac0000000 R09: ffffc11abfffffff
C5;R10: 00000000ffffffff R11: 0000000000000066 R12: ffff949040380000
C5;R13: 0000000000000001 R14: 0000000000000dc0 R15: 000000000000f720
C5;FS:  00007f2b496ccb80(0000) GS:ffff949d966b5000(0000) knlGS:0000000000000000
C5;CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
C5;CR2: 00007f17b8093940 CR3: 000000011543b000 CR4: 0000000000f50ef0
C5;PKRU: 55555554
T1575;Kernel panic - not syncing: Fatal exception in interrupt
T1575;Kernel Offset: 0x24c00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
T1575;---[ end Kernel panic - not syncing: Fatal exception in interrupt ]---


Bert Karwatzki

Re: [Re] kernel panic during shutdown in v7.2-rc{3,4} and next-20260722 with PREEMPT_RT

[Bert Karwatzki]

Am Donnerstag, dem 23.07.2026 um 15:10 +0200 schrieb Bert Karwatzki:
> I was able to gather the panic error message from a failed shutdown via netconsole,
> this time the kernel used was v7.2-rc3:
> #
> Bert Karwatzki

Unfortunatetly I can now reproduce these kernel panics in v7.1:

T1581;BUG: scheduling while atomic: Xorg/1581/0x00000003
T1581,ncfrag=0/979;Modules linked in: netconsole ccm snd_seq_dummy snd_hrtimer snd_seq nls_ascii nls_cp437 vfat fat joydev snd_usb_audio mt7925e mt7925_common
snd_usbmidi_lib mt792x_lib snd_ump mt76_connac_lib snd_rawmidi mt76 snd_seq_device intel_rapl_msr iosf_mbi intel_rapl_common snd_hda_codec_atihdmi mac80211 rapl
wmi_bmof snd_hda_codec_hdmi snd_hda_intel snd_hda_codec pcspkr libarc4 snd_hda_core cfg80211 snd_intel_dspcfg snd_hwdep snd_pcm snd_timer snd rfkill soundcore
aead evdev spd5118 regmap_i2c ccp k10temp nct6775 nct6775_core hwmon_vid configfs efi_pstore efivarfs autofs4 ext4 mbcache jbd2 amdgpu hid_generic
drm_client_lib i2c_algo_bit drm_buddy drm_ttm_helper ttm usbhid drm_exec drm_suballoc_helper mfd_core hid drm_panel_backlight_quirks gpu_sched amdxcp
drm_display_helper drm_kms_helper ahci libahci xhci_pci drm libata xhci_hcd nvme scsi_mod usbcore igc nvme_core video cec scsi_common nvme_keyring crc16
nvme_auth i2c_piix4 gpio_amdpt usb_common i2c
T1581,ncfrag=955/979;_smbus gpio_generic wmi
T1581;CPU: 19 UID: 0 PID: 1581 Comm: Xorg Not tainted 7.1.0-stable #1241 PREEMPT_{RT,(full)} 
T1581;Hardware name: ASUS System Product Name/ROG STRIX B850-F GAMING WIFI, BIOS 1627 02/05/2026
T1581;Call Trace:
T1581; <TASK>
T1581; ? dump_stack_lvl+0x4b/0x70
T1581; ? __schedule_bug.cold+0x3e/0x4a
T1581; ? __schedule+0xf6f/0x1700
T1581; ? try_to_take_rt_mutex+0x191/0x300
T1581; ? rtlock_slowlock_locked+0x39/0xe50
T1581; ? schedule_rtlock+0x15/0x30
T1581; ? rtlock_slowlock_locked+0x30b/0xe50
T1581; ? rt_spin_lock+0xc3/0x120
T1581; ? get_page_from_freelist+0x221/0x15f0
T1581; ? dc_link_get_highest_encoding_format+0x61/0xb0 [amdgpu]
T1581; ? __alloc_frozen_pages_noprof+0x146/0x2b0
T1581; ? ___kmalloc_large_node+0xae/0xd0
T1581; ? __kvmalloc_node_noprof+0x398/0x540
T1581; ? dcn401_build_pipe_pix_clk_params+0x10a/0x1f0 [amdgpu]
T1581; ? dc_create_plane_state+0x24/0x80 [amdgpu]
T1581; ? dc_state_create_phantom_plane+0x15/0x50 [amdgpu]
T1581; ? dml21_handle_phantom_streams_planes+0x292/0x510 [amdgpu]
T1581; ? dml21_mode_check_and_programming+0x157/0x7e0 [amdgpu]
T1581; ? sysvec_call_function_single+0xe/0x80
T1581; ? asm_sysvec_call_function_single+0x1a/0x20
T1581; ? try_to_take_rt_mutex+0x191/0x300
T1581; ? calculate_plane_rec_in_timing_active+0x142/0x1f0 [amdgpu]
T1581; ? spl_calculate_number_of_taps.constprop.0.isra.0+0x142/0xf00 [amdgpu]
T1581; ? spl_calculate_number_of_taps.constprop.0.isra.0+0xed4/0xf00 [amdgpu]
T1581; ? dcn401_validate_bandwidth+0xb8/0x1f0 [amdgpu]
T1581; ? dc_validate_with_context+0x5cf/0x6b0 [amdgpu]
T1581; ? dc_commit_streams+0x27c/0x4e0 [amdgpu]
T1581; ? amdgpu_dm_atomic_commit_tail+0x4ec/0x3610 [amdgpu]
T1581; ? optc1_get_crtc_scanoutpos+0x5f/0xa0 [amdgpu]
T1581; ? dc_stream_get_scanoutpos+0x7a/0xc0 [amdgpu]
T1581; ? amdgpu_display_get_crtc_scanoutpos+0xa5/0x1c0 [amdgpu]
T1581; ? amdgpu_display_crtc_idx_to_irq_type+0x30/0x30 [amdgpu]
T1581; ? amdgpu_crtc_get_scanout_position+0x23/0x30 [amdgpu]
T1581; ? drm_crtc_vblank_helper_get_vblank_timestamp_internal+0x176/0x3a0 [drm]
T1581; ? wait_for_completion_timeout+0x127/0x170
T1581; ? drm_crtc_get_last_vbltimestamp+0x50/0x80 [drm]
T1581; ? commit_tail+0xad/0x140 [drm_kms_helper]
T1581; ? drm_atomic_helper_commit+0x137/0x180 [drm_kms_helper]
T1581; ? drm_atomic_commit+0xac/0xe0 [drm]
T1581; ? __drm_universal_plane_init.cold+0x12/0x12 [drm]
T1581; ? drm_atomic_helper_set_config+0x6f/0xb0 [drm_kms_helper]
T1581; ? drm_mode_setcrtc+0x443/0x8b0 [drm]
T1581; ? __schedule+0x389/0x1700
T1581; ? rt_spin_lock+0x35/0x120
T1581; ? drm_mode_getcrtc+0x180/0x180 [drm]
T1581; ? drm_ioctl_kernel+0xa1/0xf0 [drm]
T1581; ? drm_ioctl+0x27f/0x520 [drm]
T1581; ? drm_mode_getcrtc+0x180/0x180 [drm]
T1581; ? amdgpu_drm_ioctl+0x45/0x80 [amdgpu]
T1581; ? __x64_sys_ioctl+0x92/0xe0
T1581; ? do_syscall_64+0xdd/0x5d0
T1581; ? switch_fpu_return+0x42/0x70
T1581; ? handle_irq_event+0x4c/0x80
T1581; ? do_syscall_64+0x94/0x5d0
T1581; ? entry_SYSCALL_64_after_hwframe+0x55/0x5d
T1581; </TASK>
T1581;------------[ cut here ]------------
T1581;WARNING: drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/dc_fpu.c:126 at dc_fpu_end+0x36/0x40 [amdgpu], CPU#20: Xorg/1581
T1581,ncfrag=0/979;Modules linked in: netconsole ccm snd_seq_dummy snd_hrtimer snd_seq nls_ascii nls_cp437 vfat fat joydev snd_usb_audio mt7925e mt7925_common
snd_usbmidi_lib mt792x_lib snd_ump mt76_connac_lib snd_rawmidi mt76 snd_seq_device intel_rapl_msr iosf_mbi intel_rapl_common snd_hda_codec_atihdmi mac80211 rapl
wmi_bmof snd_hda_codec_hdmi snd_hda_intel snd_hda_codec pcspkr libarc4 snd_hda_core cfg80211 snd_intel_dspcfg snd_hwdep snd_pcm snd_timer snd rfkill soundcore
aead evdev spd5118 regmap_i2c ccp k10temp nct6775 nct6775_core hwmon_vid configfs efi_pstore efivarfs autofs4 ext4 mbcache jbd2 amdgpu hid_generic
drm_client_lib i2c_algo_bit drm_buddy drm_ttm_helper ttm usbhid drm_exec drm_suballoc_helper mfd_core hid drm_panel_backlight_quirks gpu_sched amdxcp
drm_display_helper drm_kms_helper ahci libahci xhci_pci drm libata xhci_hcd nvme scsi_mod usbcore igc nvme_core video cec scsi_common nvme_keyring crc16
nvme_auth i2c_piix4 gpio_amdpt usb_common i2c
T1581,ncfrag=955/979;_smbus gpio_generic wmi
T1581;CPU: 20 UID: 0 PID: 1581 Comm: Xorg Tainted: G        W           7.1.0-stable #1241 PREEMPT_{RT,(full)} 
T1581;Tainted: [W]=WARN
T1581;Hardware name: ASUS System Product Name/ROG STRIX B850-F GAMING WIFI, BIOS 1627 02/05/2026
T1581;RIP: 0010:dc_fpu_end+0x36/0x40 [amdgpu]
T1581;Code: 05 0f 2b f7 d6 ff c8 74 10 78 1f 65 ff 0d 32 1b f6 d6 74 0c c3 cc cc cc cc e8 96 f7 f2 d5 eb eb e8 4f 65 f1 d5 c3 cc cc cc cc <0f> 0b eb dd 66 0f 1f
44 00 00 41 56 41 55 41 54 55 53 48 83 ec 10
T1581;RSP: 0018:ffff9d3305d835b8 EFLAGS: 00010296
T1581;RAX: 00000000ffffffff RBX: ffff8face4600000 RCX: 0000000000000008
T1581;RDX: 0000000000000000 RSI: 00000000000006a4 RDI: ffffffffc15999d0
T1581;RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001
T1581;R10: ffff8face4600000 R11: 0000000000000002 R12: ffff8fac0d6c0000
T1581;R13: ffff8faca1000000 R14: 0000000000000000 R15: ffff8faca1000000
T1581;FS:  00007ff40af34b80(0000) GS:ffff8fbba5c76000(0000) knlGS:0000000000000000
T1581;CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
T1581;CR2: 0000559cb13d5018 CR3: 0000000120bd9000 CR4: 0000000000f50ef0
T1581;PKRU: 55555554
T1581;Call Trace:
T1581; <TASK>
T1581; ? dcn401_validate_bandwidth+0xd1/0x1f0 [amdgpu]
T1581; ? dc_validate_with_context+0x5cf/0x6b0 [amdgpu]
T1581; ? dc_commit_streams+0x27c/0x4e0 [amdgpu]
T1581; ? amdgpu_dm_atomic_commit_tail+0x4ec/0x3610 [amdgpu]
T1581; ? optc1_get_crtc_scanoutpos+0x5f/0xa0 [amdgpu]
T1581; ? dc_stream_get_scanoutpos+0x7a/0xc0 [amdgpu]
T1581; ? amdgpu_display_get_crtc_scanoutpos+0xa5/0x1c0 [amdgpu]
T1581; ? amdgpu_display_crtc_idx_to_irq_type+0x30/0x30 [amdgpu]
T1581; ? amdgpu_crtc_get_scanout_position+0x23/0x30 [amdgpu]
T1581; ? drm_crtc_vblank_helper_get_vblank_timestamp_internal+0x176/0x3a0 [drm]
T1581; ? wait_for_completion_timeout+0x127/0x170
T1581; ? drm_crtc_get_last_vbltimestamp+0x50/0x80 [drm]
T1581; ? commit_tail+0xad/0x140 [drm_kms_helper]
T1581; ? drm_atomic_helper_commit+0x137/0x180 [drm_kms_helper]
T1581; ? drm_atomic_commit+0xac/0xe0 [drm]
T1581; ? __drm_universal_plane_init.cold+0x12/0x12 [drm]
T1581; ? drm_atomic_helper_set_config+0x6f/0xb0 [drm_kms_helper]
T1581; ? drm_mode_setcrtc+0x443/0x8b0 [drm]
T1581; ? __schedule+0x389/0x1700
T1581; ? rt_spin_lock+0x35/0x120
T1581; ? drm_mode_getcrtc+0x180/0x180 [drm]
T1581; ? drm_ioctl_kernel+0xa1/0xf0 [drm]
T1581; ? drm_ioctl+0x27f/0x520 [drm]
T1581; ? drm_mode_getcrtc+0x180/0x180 [drm]
T1581; ? amdgpu_drm_ioctl+0x45/0x80 [amdgpu]
T1581; ? __x64_sys_ioctl+0x92/0xe0
T1581; ? do_syscall_64+0xdd/0x5d0
T1581; ? switch_fpu_return+0x42/0x70
T1581; ? handle_irq_event+0x4c/0x80
T1581; ? do_syscall_64+0x94/0x5d0
T1581; ? entry_SYSCALL_64_after_hwframe+0x55/0x5d
T1581; </TASK>
T1581;---[ end trace 0000000000000000 ]---
T1581;------------[ cut here ]------------
T1581;WARNING: drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/dc_fpu.c:97 at dc_fpu_begin+0x4f/0x60 [amdgpu], CPU#1: Xorg/1581
T1581,ncfrag=0/979;Modules linked in: netconsole ccm snd_seq_dummy snd_hrtimer snd_seq nls_ascii nls_cp437 vfat fat joydev snd_usb_audio mt7925e mt7925_common
snd_usbmidi_lib mt792x_lib snd_ump mt76_connac_lib snd_rawmidi mt76 snd_seq_device intel_rapl_msr iosf_mbi intel_rapl_common snd_hda_codec_atihdmi mac80211 rapl
wmi_bmof snd_hda_codec_hdmi snd_hda_intel snd_hda_codec pcspkr libarc4 snd_hda_core cfg80211 snd_intel_dspcfg snd_hwdep snd_pcm snd_timer snd rfkill soundcore
aead evdev spd5118 regmap_i2c ccp k10temp nct6775 nct6775_core hwmon_vid configfs efi_pstore efivarfs autofs4 ext4 mbcache jbd2 amdgpu hid_generic
drm_client_lib i2c_algo_bit drm_buddy drm_ttm_helper ttm usbhid drm_exec drm_suballoc_helper mfd_core hid drm_panel_backlight_quirks gpu_sched amdxcp
drm_display_helper drm_kms_helper ahci libahci xhci_pci drm libata xhci_hcd nvme scsi_mod usbcore igc nvme_core video cec scsi_common nvme_keyring crc16
nvme_auth i2c_piix4 gpio_amdpt usb_common i2c
T1581,ncfrag=955/979;_smbus gpio_generic wmi
T1581;CPU: 1 UID: 0 PID: 1581 Comm: Xorg Tainted: G        W           7.1.0-stable #1241 PREEMPT_{RT,(full)} 
T1581;Tainted: [W]=WARN
T1581;Hardware name: ASUS System Product Name/ROG STRIX B850-F GAMING WIFI, BIOS 1627 02/05/2026
T1581;RIP: 0010:dc_fpu_begin+0x4f/0x60 [amdgpu]
T1581;Code: d0 75 27 65 ff 05 81 1b f6 d6 b8 01 00 00 00 65 0f c1 05 44 2b f7 d6 85 c0 74 05 c3 cc cc cc cc bf 02 00 00 00 e9 51 f8 f2 d5 <0f> 0b eb d5 66 90 66
66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 d6 b8
T1581;RSP: 0018:ffff9d3305d83640 EFLAGS: 00010206
T1581;RAX: 0000000000ff0000 RBX: ffff8fad48480000 RCX: ffff8face86d3e28
T1581;RDX: 0000000000ff0000 RSI: 000000000000011f RDI: ffffffffc15bcda0
T1581;RBP: ffff8fad65380000 R08: ffffffff97b01fc0 R09: 0000000000000006
T1581;R10: ffffffff97cb5440 R11: 0000000000000076 R12: ffff8fad48480000
T1581;R13: 0000000000000001 R14: ffff8faca1000000 R15: 0000000000000000
T1581;FS:  00007ff40af34b80(0000) GS:ffff8fbba57b6000(0000) knlGS:0000000000000000
T1581;CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
T1581;CR2: 00007f593eec2478 CR3: 0000000120bd9000 CR4: 0000000000f50ef0
T1581;PKRU: 55555554
T1581;Call Trace:
T1581; <TASK>
T1581; ? dc_state_create_copy+0x76/0x120 [amdgpu]
T1581; ? dc_commit_state_no_check+0x271/0xde0 [amdgpu]
T1581; ? dc_commit_streams+0x2f4/0x4e0 [amdgpu]
T1581; ? amdgpu_dm_atomic_commit_tail+0x4ec/0x3610 [amdgpu]
T1581; ? optc1_get_crtc_scanoutpos+0x5f/0xa0 [amdgpu]
T1581; ? dc_stream_get_scanoutpos+0x7a/0xc0 [amdgpu]
T1581; ? amdgpu_display_get_crtc_scanoutpos+0xa5/0x1c0 [amdgpu]
T1581; ? amdgpu_display_crtc_idx_to_irq_type+0x30/0x30 [amdgpu]
T1581; ? amdgpu_crtc_get_scanout_position+0x23/0x30 [amdgpu]
T1581; ? drm_crtc_vblank_helper_get_vblank_timestamp_internal+0x176/0x3a0 [drm]
T1581; ? wait_for_completion_timeout+0x127/0x170
T1581; ? drm_crtc_get_last_vbltimestamp+0x50/0x80 [drm]
T1581; ? commit_tail+0xad/0x140 [drm_kms_helper]
T1581; ? drm_atomic_helper_commit+0x137/0x180 [drm_kms_helper]
T1581; ? drm_atomic_commit+0xac/0xe0 [drm]
T1581; ? __drm_universal_plane_init.cold+0x12/0x12 [drm]
T1581; ? drm_atomic_helper_set_config+0x6f/0xb0 [drm_kms_helper]
T1581; ? drm_mode_setcrtc+0x443/0x8b0 [drm]
T1581; ? __schedule+0x389/0x1700
T1581; ? rt_spin_lock+0x35/0x120
T1581; ? drm_mode_getcrtc+0x180/0x180 [drm]
T1581; ? drm_ioctl_kernel+0xa1/0xf0 [drm]
T1581; ? drm_ioctl+0x27f/0x520 [drm]
T1581; ? drm_mode_getcrtc+0x180/0x180 [drm]
T1581; ? amdgpu_drm_ioctl+0x45/0x80 [amdgpu]
T1581; ? __x64_sys_ioctl+0x92/0xe0
T1581; ? do_syscall_64+0xdd/0x5d0
T1581; ? switch_fpu_return+0x42/0x70
T1581; ? handle_irq_event+0x4c/0x80
T1581; ? do_syscall_64+0x94/0x5d0
T1581; ? entry_SYSCALL_64_after_hwframe+0x55/0x5d
T1581; </TASK>
T1581;---[ end trace 0000000000000000 ]---
T1581;------------[ cut here ]------------
T1581;kernel BUG at mm/vmalloc.c:3206!
T1581;Oops: invalid opcode: 0000 [#1] SMP NOPTI
T1581;CPU: 29 UID: 0 PID: 1581 Comm: Xorg Tainted: G        W           7.1.0-stable #1241 PREEMPT_{RT,(full)} 
T1581;Tainted: [W]=WARN
T1581;Hardware name: ASUS System Product Name/ROG STRIX B850-F GAMING WIFI, BIOS 1627 02/05/2026
T1581;RIP: 0010:__get_vm_area_node+0x113/0x130
T1581;Code: ff bd ff ff ff ff 48 0f bd e8 b8 0c 00 00 00 ff c5 39 c5 0f 4c e8 b8 1e 00 00 00 39 c5 0f 4f e8 c4 e2 d1 f7 ee e9 34 ff ff ff <0f> 0b 4c 89 ef e8 23
51 01 00 45 31 ed eb ae 0f 1f 00 66 66 2e 0f
T1581;RSP: 0018:ffff9d3305d834f8 EFLAGS: 00010286
T1581;RAX: 00000000ffffffff RBX: 0000000000000001 RCX: 0000000000000022
T1581;RDX: 000000000000000c RSI: 0000000000000001 RDI: 000000000000f720
T1581;RBP: 000000000000000c R08: ffff9d3300000000 R09: ffffbd32ffffffff
T1581;R10: 00000000ffffffff R11: 0000000000000076 R12: ffff8fad48480000
T1581;R13: 0000000000000001 R14: 0000000000000dc0 R15: 000000000000f720
T1581;FS:  00007ff40af34b80(0000) GS:ffff8fbba5eb6000(0000) knlGS:0000000000000000
T1581;CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
T1581;CR2: 00007f6ae0f90110 CR3: 0000000120bd9000 CR4: 0000000000f50ef0
T1581;PKRU: 55555554
T1581;Call Trace:
T1581; <TASK>
T1581; ? __vmalloc_node_range_noprof+0x14a/0x920
T1581; ? dml21_allocate_memory+0x124/0x180 [amdgpu]
T1581; ? dml21_allocate_memory+0x124/0x180 [amdgpu]
T1581; ? exc_invalid_op+0x18/0x70
T1581; ? __vmalloc_node_noprof+0x47/0x60
T1581; ? dml21_allocate_memory+0x124/0x180 [amdgpu]
T1581; ? dml21_allocate_memory+0x124/0x180 [amdgpu]
T1581; ? dml21_create_copy+0x16/0x40 [amdgpu]
T1581; ? dc_state_create_copy+0x89/0x120 [amdgpu]
T1581; ? dc_commit_state_no_check+0x271/0xde0 [amdgpu]
T1581; ? dc_commit_streams+0x2f4/0x4e0 [amdgpu]
T1581; ? amdgpu_dm_atomic_commit_tail+0x4ec/0x3610 [amdgpu]
T1581; ? optc1_get_crtc_scanoutpos+0x5f/0xa0 [amdgpu]
T1581; ? dc_stream_get_scanoutpos+0x7a/0xc0 [amdgpu]
T1581; ? amdgpu_display_get_crtc_scanoutpos+0xa5/0x1c0 [amdgpu]
T1581; ? amdgpu_display_crtc_idx_to_irq_type+0x30/0x30 [amdgpu]
T1581; ? amdgpu_crtc_get_scanout_position+0x23/0x30 [amdgpu]
T1581; ? drm_crtc_vblank_helper_get_vblank_timestamp_internal+0x176/0x3a0 [drm]
T1581; ? wait_for_completion_timeout+0x127/0x170
T1581; ? drm_crtc_get_last_vbltimestamp+0x50/0x80 [drm]
T1581; ? commit_tail+0xad/0x140 [drm_kms_helper]
T1581; ? drm_atomic_helper_commit+0x137/0x180 [drm_kms_helper]
T1581; ? drm_atomic_commit+0xac/0xe0 [drm]
T1581; ? __drm_universal_plane_init.cold+0x12/0x12 [drm]
T1581; ? drm_atomic_helper_set_config+0x6f/0xb0 [drm_kms_helper]
T1581; ? drm_mode_setcrtc+0x443/0x8b0 [drm]
T1581; ? __schedule+0x389/0x1700
T1581; ? rt_spin_lock+0x35/0x120
T1581; ? drm_mode_getcrtc+0x180/0x180 [drm]
T1581; ? drm_ioctl_kernel+0xa1/0xf0 [drm]
T1581; ? drm_ioctl+0x27f/0x520 [drm]
T1581; ? drm_mode_getcrtc+0x180/0x180 [drm]
T1581; ? amdgpu_drm_ioctl+0x45/0x80 [amdgpu]
T1581; ? __x64_sys_ioctl+0x92/0xe0
T1581; ? do_syscall_64+0xdd/0x5d0
T1581; ? switch_fpu_return+0x42/0x70
T1581; ? handle_irq_event+0x4c/0x80
T1581; ? do_syscall_64+0x94/0x5d0
T1581; ? entry_SYSCALL_64_after_hwframe+0x55/0x5d
T1581; </TASK>
T1581,ncfrag=0/979;Modules linked in: netconsole ccm snd_seq_dummy snd_hrtimer snd_seq nls_ascii nls_cp437 vfat fat joydev snd_usb_audio mt7925e mt7925_common
snd_usbmidi_lib mt792x_lib snd_ump mt76_connac_lib snd_rawmidi mt76 snd_seq_device intel_rapl_msr iosf_mbi intel_rapl_common snd_hda_codec_atihdmi mac80211 rapl
wmi_bmof snd_hda_codec_hdmi snd_hda_intel snd_hda_codec pcspkr libarc4 snd_hda_core cfg80211 snd_intel_dspcfg snd_hwdep snd_pcm snd_timer snd rfkill soundcore
aead evdev spd5118 regmap_i2c ccp k10temp nct6775 nct6775_core hwmon_vid configfs efi_pstore efivarfs autofs4 ext4 mbcache jbd2 amdgpu hid_generic
drm_client_lib i2c_algo_bit drm_buddy drm_ttm_helper ttm usbhid drm_exec drm_suballoc_helper mfd_core hid drm_panel_backlight_quirks gpu_sched amdxcp
drm_display_helper drm_kms_helper ahci libahci xhci_pci drm libata xhci_hcd nvme scsi_mod usbcore igc nvme_core video cec scsi_common nvme_keyring crc16
nvme_auth i2c_piix4 gpio_amdpt usb_common i2c
T1581,ncfrag=955/979;_smbus gpio_generic wmi
T1581;---[ end trace 0000000000000000 ]---
T1581;------------[ cut here ]------------
T1581;WARNING: kernel/printk/nbcon.c:1739 at nbcon_cpu_emergency_exit+0x85/0xa0, CPU#26: Xorg/1581
T1581,ncfrag=0/979;Modules linked in: netconsole ccm snd_seq_dummy snd_hrtimer snd_seq nls_ascii nls_cp437 vfat fat joydev snd_usb_audio mt7925e mt7925_common
snd_usbmidi_lib mt792x_lib snd_ump mt76_connac_lib snd_rawmidi mt76 snd_seq_device intel_rapl_msr iosf_mbi intel_rapl_common snd_hda_codec_atihdmi mac80211 rapl
wmi_bmof snd_hda_codec_hdmi snd_hda_intel snd_hda_codec pcspkr libarc4 snd_hda_core cfg80211 snd_intel_dspcfg snd_hwdep snd_pcm snd_timer snd rfkill soundcore
aead evdev spd5118 regmap_i2c ccp k10temp nct6775 nct6775_core hwmon_vid configfs efi_pstore efivarfs autofs4 ext4 mbcache jbd2 amdgpu hid_generic
drm_client_lib i2c_algo_bit drm_buddy drm_ttm_helper ttm usbhid drm_exec drm_suballoc_helper mfd_core hid drm_panel_backlight_quirks gpu_sched amdxcp
drm_display_helper drm_kms_helper ahci libahci xhci_pci drm libata xhci_hcd nvme scsi_mod usbcore igc nvme_core video cec scsi_common nvme_keyring crc16
nvme_auth i2c_piix4 gpio_amdpt usb_common i2c
T1581,ncfrag=955/979;_smbus gpio_generic wmi
T1581;CPU: 26 UID: 0 PID: 1581 Comm: Xorg Tainted: G      D W           7.1.0-stable #1241 PREEMPT_{RT,(full)} 
T1581;Tainted: [D]=DIE, [W]=WARN
T1581;Hardware name: ASUS System Product Name/ROG STRIX B850-F GAMING WIFI, BIOS 1627 02/05/2026
T1581;RIP: 0010:nbcon_cpu_emergency_exit+0x85/0xa0
T1581;Code: 75 38 48 83 c4 10 c3 cc cc cc cc 48 8d 7c 24 04 e8 e0 ef ff ff 80 7c 24 05 00 74 ce e8 74 fc ff ff eb c7 e8 0d 86 f2 ff eb c9 <0f> 0b 8b 05 c3 78 fc
00 85 c0 75 a2 0f 0b eb b0 e8 46 01 8a 00 66
T1581;RSP: 0018:ffff9d3305d83368 EFLAGS: 00010246
T1581;RAX: 0000000000000000 RBX: 000000000000000b RCX: 0000000000000000
T1581;RDX: ffff8fbb3da9b3c4 RSI: 0000000000000001 RDI: ffff8fbb3da9b200
T1581;RBP: 0000000000000246 R08: 0000000000000000 R09: 3fffffffffffdfff
T1581;R10: ffffffff97cd3dc0 R11: ffff9d3305d83170 R12: ffff9d3305d83448
T1581;R13: ffffffff96ec5913 R14: 0000000000000002 R15: 0000000000000004
T1581;FS:  00007ff40af34b80(0000) GS:ffff8fbba5df6000(0000) knlGS:0000000000000000
T1581;CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
T1581;CR2: 00007f4d92ce39d0 CR3: 0000000120bd9000 CR4: 0000000000f50ef0
T1581;PKRU: 55555554
T1581;Call Trace:
T1581; <TASK>
T1581; ? oops_exit.cold+0x13/0x1f
T1581; ? oops_end+0x66/0xe0
T1581; ? do_trap+0xc5/0x110
T1581; ? do_error_trap+0x60/0x80
T1581; ? __get_vm_area_node+0x113/0x130
T1581; ? exc_invalid_op+0x4f/0x70
T1581; ? __get_vm_area_node+0x113/0x130
T1581; ? asm_exc_invalid_op+0x1a/0x20
T1581; ? __get_vm_area_node+0x113/0x130
T1581; ? __vmalloc_node_range_noprof+0x14a/0x920
T1581; ? dml21_allocate_memory+0x124/0x180 [amdgpu]
T1581; ? dml21_allocate_memory+0x124/0x180 [amdgpu]
T1581; ? exc_invalid_op+0x18/0x70
T1581; ? __vmalloc_node_noprof+0x47/0x60
T1581; ? dml21_allocate_memory+0x124/0x180 [amdgpu]
T1581; ? dml21_allocate_memory+0x124/0x180 [amdgpu]
T1581; ? dml21_create_copy+0x16/0x40 [amdgpu]
T1581; ? dc_state_create_copy+0x89/0x120 [amdgpu]
T1581; ? dc_commit_state_no_check+0x271/0xde0 [amdgpu]
T1581; ? dc_commit_streams+0x2f4/0x4e0 [amdgpu]
T1581; ? amdgpu_dm_atomic_commit_tail+0x4ec/0x3610 [amdgpu]
T1581; ? optc1_get_crtc_scanoutpos+0x5f/0xa0 [amdgpu]
T1581; ? dc_stream_get_scanoutpos+0x7a/0xc0 [amdgpu]
T1581; ? amdgpu_display_get_crtc_scanoutpos+0xa5/0x1c0 [amdgpu]
T1581; ? amdgpu_display_crtc_idx_to_irq_type+0x30/0x30 [amdgpu]
T1581; ? amdgpu_crtc_get_scanout_position+0x23/0x30 [amdgpu]
T1581; ? drm_crtc_vblank_helper_get_vblank_timestamp_internal+0x176/0x3a0 [drm]
T1581; ? wait_for_completion_timeout+0x127/0x170
T1581; ? drm_crtc_get_last_vbltimestamp+0x50/0x80 [drm]
T1581; ? commit_tail+0xad/0x140 [drm_kms_helper]
T1581; ? drm_atomic_helper_commit+0x137/0x180 [drm_kms_helper]
T1581; ? drm_atomic_commit+0xac/0xe0 [drm]
T1581; ? __drm_universal_plane_init.cold+0x12/0x12 [drm]
T1581; ? drm_atomic_helper_set_config+0x6f/0xb0 [drm_kms_helper]
T1581; ? drm_mode_setcrtc+0x443/0x8b0 [drm]
T1581; ? __schedule+0x389/0x1700
T1581; ? rt_spin_lock+0x35/0x120
T1581; ? drm_mode_getcrtc+0x180/0x180 [drm]
T1581; ? drm_ioctl_kernel+0xa1/0xf0 [drm]
T1581; ? drm_ioctl+0x27f/0x520 [drm]
T1581; ? drm_mode_getcrtc+0x180/0x180 [drm]
T1581; ? amdgpu_drm_ioctl+0x45/0x80 [amdgpu]
T1581; ? __x64_sys_ioctl+0x92/0xe0
T1581; ? do_syscall_64+0xdd/0x5d0
T1581; ? switch_fpu_return+0x42/0x70
T1581; ? handle_irq_event+0x4c/0x80
T1581; ? do_syscall_64+0x94/0x5d0
T1581; ? entry_SYSCALL_64_after_hwframe+0x55/0x5d
T1581; </TASK>
T1581;---[ end trace 0000000000000000 ]---
C19;RIP: 0010:__get_vm_area_node+0x113/0x130
C28;Code: ff bd ff ff ff ff 48 0f bd e8 b8 0c 00 00 00 ff c5 39 c5 0f 4c e8 b8 1e 00 00 00 39 c5 0f 4f e8 c4 e2 d1 f7 ee e9 34 ff ff ff <0f> 0b 4c 89 ef e8 23
51 01 00 45 31 ed eb ae 0f 1f 00 66 66 2e 0f
C28;RSP: 0018:ffff9d3305d834f8 EFLAGS: 00010286
C28;RAX: 00000000ffffffff RBX: 0000000000000001 RCX: 0000000000000022
C28;RDX: 000000000000000c RSI: 0000000000000001 RDI: 000000000000f720
C28;RBP: 000000000000000c R08: ffff9d3300000000 R09: ffffbd32ffffffff
C28;R10: 00000000ffffffff R11: 0000000000000076 R12: ffff8fad48480000
C28;R13: 0000000000000001 R14: 0000000000000dc0 R15: 000000000000f720
C28;FS:  00007ff40af34b80(0000) GS:ffff8fbba5e76000(0000) knlGS:0000000000000000
C28;CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
C28;CR2: 00007f6ae2fa7010 CR3: 0000000120bd9000 CR4: 0000000000f50ef0
C28;PKRU: 55555554
T1581;Kernel panic - not syncing: Fatal exception in interrupt
T1581;Kernel Offset: 0x15a00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
T1581;---[ end Kernel panic - not syncing: Fatal exception in interrupt ]---

So now I'm going to use memtest86+ on my machine and then look at the changes I had in
my userspace as the first error occured on 22.7.2026. Let's hope this does not escalate ...

Bert Karwatzki

Re: [Re] kernel panic during shutdown in v7.2-rc{3,4} and next-20260722 with PREEMPT_RT

[Bert Karwatzki]

Am Donnerstag, dem 23.07.2026 um 15:23 +0200 schrieb Bert Karwatzki:
> Am Donnerstag, dem 23.07.2026 um 15:10 +0200 schrieb Bert Karwatzki:
> > I was able to gather the panic error message from a failed shutdown via netconsole,
> > this time the kernel used was v7.2-rc3:
> > #
> > Bert Karwatzki
> 
> Unfortunatetly I can now reproduce these kernel panics in v7.1:
> 
> 
> So now I'm going to use memtest86+ on my machine and then look at the changes I had in
> my userspace as the first error occured on 22.7.2026. Let's hope this does not escalate ...
> 
> Bert Karwatzki

So I've run memtest86+ for ~2.5h (2.6 complete runs) and found no error. Even if my memory
contained an error, if it's that hard to trigger it would not cause frequent crashes.

But I found out an exciting thing:
I can only reproduce the crashes in v7.2-rc4 when watching the reboot via netconsole,
without netconsole no crash occurs!(This also explains why I had not seen this crashes before ...) 
In next-20260722 the crash is reproducible without netconsole.
So I'm going back to bisecting from v7.2-rc4 to next-20260722. Once I'm finished with
that I'm going to look at the "netconsole triggerred" crashes.
 Does anyone have an idea what's going on?

Bert Karwatzki

Re: [Re] kernel panic during shutdown in next-20260722

[Bert Karwatzki]

Am Donnerstag, dem 23.07.2026 um 18:17 +0200 schrieb Bert Karwatzki:
> Am Donnerstag, dem 23.07.2026 um 15:23 +0200 schrieb Bert Karwatzki:
> > Am Donnerstag, dem 23.07.2026 um 15:10 +0200 schrieb Bert Karwatzki:
> > > I was able to gather the panic error message from a failed shutdown via netconsole,
> > > this time the kernel used was v7.2-rc3:
> > > #
> > > Bert Karwatzki
> > 
> > Unfortunatetly I can now reproduce these kernel panics in v7.1:
> > 
> > 
> > So now I'm going to use memtest86+ on my machine and then look at the changes I had in
> > my userspace as the first error occured on 22.7.2026. Let's hope this does not escalate ...
> > 
> > Bert Karwatzki
> 
> 
> But I found out an exciting thing:
> I can only reproduce the crashes in v7.2-rc4 when watching the reboot via netconsole,
> without netconsole no crash occurs!(This also explains why I had not seen this crashes before ...) 
> 
Actually this is not cause by netconsole, but by rebooting right after a crash. Some
broken state seems to be preserved across reboots. Switching off the power supply after
a crash or even a ~30s wait after switching off the crashed machine seems to be enough
to get around this.
 Also the hang when rebooting next-20260722 also occurs when compiling without PREEMPT_RT.

Bert Karwatzki