* bcache kernel panic
@ 2023-02-16 16:58 Stefan Boehringer
2023-02-16 18:00 ` Matthias Ferdinand
0 siblings, 1 reply; 7+ messages in thread
From: Stefan Boehringer @ 2023-02-16 16:58 UTC (permalink / raw)
To: linux-bcache
Dear bache maintainer,
I would like to report a kernel panic for bcache that is unfortunately
not reproducible. I get this error roughly once a week, resulting in a
green screen on my system. Please let me know, if I can provide further
information to fix the bug. Below dmesg output copy-pasted as instructed.
Thank you, best,
Stefan
Feb 15 08:44:49.840548 myhost kernel: ------------[ cut here ]------------
Feb 15 08:44:49.840614 myhost kernel: memcpy: detected field-spanning
write (size 264) of single field "&i
->j" at drivers/md/bcache/journal.c:152 (size 240)
Feb 15 08:44:49.840633 myhost kernel: WARNING: CPU: 7 PID: 755 at
drivers/md/bcache/journal.c:152 journal_
read_bucket+0x3df/0x490 [bcache]
Feb 15 08:44:49.840649 myhost kernel: Modules linked in: snd_hwdep(+)
kvm(+) snd_pcm videobuf2_vmalloc(+)
videobuf2_memops snd_timer videobuf2_v4l2 sr_mod(+) snd real
tek cdrom pcspkr efi_pstore k10temp videobuf2_common i2c_piix4
hid_plantronics(+) irqbypass pcc_cpufreq(-) mdio_devres joydev soundcore
cfg80211 libphy bcache tiny_power_button acpi_cpufreq button fuse
configfs dmi_sysfs ip_tables x_tables btusb btrtl btbcm btintel btmtk
bluetooth hid_generic uas ecdh_generic usbhid usb_storage rfkill amdgpu
crct10dif_pclmul crc32_pclmul polyval_clmulni polyval_generic gf128mul
drm_ttm_helper ttm ghash_clmulni_intel iommu_v2 xhci_pci gpu_sched
sha512_ssse3 xhci_pci_renesas xhci_hcd drm_buddy aesni_intel
drm_display_helper nvme crypto_simd usbcore cryptd cec ccp nvme_core
sp5100_tco rc_core amd_sfh video wmi btrfs blake2b_generic libcrc32c
crc32c_intel xor raid6_pq v4l2loopback(O) videodev mc sg dm_multipath
dm_mod scsi_dh_rdac scsi_dh_emc scsi_dh_alua msr efivarfs
Feb 15 08:44:49.840786 myhost kernel: CPU: 7 PID: 755 Comm: kworker/7:2
Tainted: G O 6.1.10-1-default #1 openSUSE Tumbleweed
22576c8b47239465c1855ce27337697dac36c24c
Feb 15 08:44:49.840809 myhost kernel: Hardware name: GIGABYTE
GB-BRR7H-4800/GB-BRR7H-4800, BIOS F5 05/05/2021
Feb 15 08:44:49.840827 myhost kernel: Workqueue: events
register_cache_worker [bcache]
Feb 15 08:44:49.840844 myhost kernel: RIP:
0010:journal_read_bucket+0x3df/0x490 [bcache]
Feb 15 08:44:49.840860 myhost kernel: Code: 00 00 00 48 89 ee 48 c7 c2
70 c4 cb c0 48 c7 c7 a8 c4 cb c0 4c 89 5c 24 48 48 89 44 24 20 c6 05 21
c8 02 00 01 e8 3e f5 65 f1 <0f> 0b 4c 8b 5c 24 48 48 8b 44 24 20 e9 6b
ff ff ff 44 8b 74 24 54
Feb 15 08:44:49.840884 myhost kernel: RSP: 0018:ffffb6fe01893c98 EFLAGS:
00010282
Feb 15 08:44:49.840900 myhost kernel: RAX: 0000000000000000 RBX:
ffff95ebc2a3c000 RCX: 0000000000000027
Feb 15 08:44:49.840915 myhost kernel: RDX: ffff95f2af7e24e8 RSI:
0000000000000001 RDI: ffff95f2af7e24e0
Feb 15 08:44:49.840932 myhost kernel: RBP: 0000000000000108 R08:
0000000000000000 R09: ffffb6fe01893b40
Feb 15 08:44:49.840948 myhost kernel: R10: 0000000000000003 R11:
ffff95f2cf2ff228 R12: dead000000000122
Feb 15 08:44:49.840965 myhost kernel: R13: dead000000000100 R14:
ffff95ebc46a8400 R15: ffffb6fe01893e08
Feb 15 08:44:49.840981 myhost kernel: FS: 0000000000000000(0000)
GS:ffff95f2af7c0000(0000) knlGS:0000000000000000
Feb 15 08:44:49.840998 myhost kernel: CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
Feb 15 08:44:49.841014 myhost kernel: CR2: 00007f166249afe0 CR3:
000000010323e000 CR4: 0000000000350ee0
Feb 15 08:44:49.841030 myhost kernel: Call Trace:
Feb 15 08:44:49.841047 myhost kernel: <TASK>
Feb 15 08:44:49.841067 myhost kernel: ? bch_btree_exit+0x20/0x20
[bcache f7676faef63111511583961fa9b18ec07deb88c4]
Feb 15 08:44:49.841090 myhost kernel: bch_journal_read+0x79/0x320
[bcache f7676faef63111511583961fa9b18ec07deb88c4]
Feb 15 08:44:49.841108 myhost kernel: register_cache_worker+0x99f/0x11c0
[bcache f7676faef63111511583961fa9b18ec07deb88c4]
Feb 15 08:44:49.841125 myhost kernel: ?
finish_task_switch.isra.0+0x90/0x2d0
Feb 15 08:44:49.841141 myhost kernel: process_one_work+0x20c/0x3d0
Feb 15 08:44:49.841157 myhost kernel: worker_thread+0x4a/0x3b0
Feb 15 08:44:49.841173 myhost kernel: ? process_one_work+0x3d0/0x3d0
Feb 15 08:44:49.841188 myhost kernel: kthread+0xd7/0x100
Feb 15 08:44:49.841203 myhost kernel: ? kthread_complete_and_exit+0x20/0x20
Feb 15 08:44:49.841219 myhost kernel: ret_from_fork+0x1f/0x30
Feb 15 08:44:49.841236 myhost kernel: </TASK>
Feb 15 08:44:49.841251 myhost kernel: ---[ end trace 0000000000000000 ]---
Feb 15 08:44:49.848553 myhost kernel: sr 1:0:0:0: [sr0] scsi3-mmc drive:
24x/24x writer dvd-ram cd/rw xa/form2 cdda tray
Feb 15 08:44:49.848843 myhost kernel: cdrom: Uniform CD-ROM driver
Revision: 3.20
Feb 15 08:44:49.872544 myhost kernel: plantronics 0003:047F:1200.0004:
input,hiddev96,hidraw3: USB HID v1.11 Device [Plantronics Plantronics
Calisto 7200] on usb-0000:04:00.0-2.4/input3
Feb 15 08:44:49.876547 myhost kernel: sr 1:0:0:0: Attached scsi CD-ROM sr0
Feb 15 08:44:49.880540 myhost kernel: ------------[ cut here ]------------
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: bcache kernel panic
2023-02-16 16:58 bcache kernel panic Stefan Boehringer
@ 2023-02-16 18:00 ` Matthias Ferdinand
2023-02-16 18:06 ` Stefan Boehringer
0 siblings, 1 reply; 7+ messages in thread
From: Matthias Ferdinand @ 2023-02-16 18:00 UTC (permalink / raw)
To: Stefan Boehringer; +Cc: linux-bcache
Hi,
there has been a thread referencing "field-spanning writes" recently:
https://www.spinics.net/lists/linux-bcache/msg11631.html
I understood this to be some kind of false positive, to be fixed in some
later relase of 6.1.x kernels.
Does the system become unusable or is this green-screen just a warning?
Regards
Matthias Ferdinand
On Thu, Feb 16, 2023 at 05:58:15PM +0100, Stefan Boehringer wrote:
> Dear bache maintainer,
>
> I would like to report a kernel panic for bcache that is unfortunately not
> reproducible. I get this error roughly once a week, resulting in a green
> screen on my system. Please let me know, if I can provide further
> information to fix the bug. Below dmesg output copy-pasted as instructed.
>
> Thank you, best,
>
> Stefan
>
>
> Feb 15 08:44:49.840548 myhost kernel: ------------[ cut here ]------------
>
> Feb 15 08:44:49.840614 myhost kernel: memcpy: detected field-spanning write
> (size 264) of single field "&i
> ->j" at drivers/md/bcache/journal.c:152 (size 240)
> Feb 15 08:44:49.840633 myhost kernel: WARNING: CPU: 7 PID: 755 at
> drivers/md/bcache/journal.c:152 journal_
> read_bucket+0x3df/0x490 [bcache]
> Feb 15 08:44:49.840649 myhost kernel: Modules linked in: snd_hwdep(+) kvm(+)
> snd_pcm videobuf2_vmalloc(+)
> videobuf2_memops snd_timer videobuf2_v4l2 sr_mod(+) snd real
> tek cdrom pcspkr efi_pstore k10temp videobuf2_common i2c_piix4
> hid_plantronics(+) irqbypass pcc_cpufreq(-) mdio_devres joydev soundcore
> cfg80211 libphy bcache tiny_power_button acpi_cpufreq button fuse configfs
> dmi_sysfs ip_tables x_tables btusb btrtl btbcm btintel btmtk bluetooth
> hid_generic uas ecdh_generic usbhid usb_storage rfkill amdgpu
> crct10dif_pclmul crc32_pclmul polyval_clmulni polyval_generic gf128mul
> drm_ttm_helper ttm ghash_clmulni_intel iommu_v2 xhci_pci gpu_sched
> sha512_ssse3 xhci_pci_renesas xhci_hcd drm_buddy aesni_intel
> drm_display_helper nvme crypto_simd usbcore cryptd cec ccp nvme_core
> sp5100_tco rc_core amd_sfh video wmi btrfs blake2b_generic libcrc32c
> crc32c_intel xor raid6_pq v4l2loopback(O) videodev mc sg dm_multipath dm_mod
> scsi_dh_rdac scsi_dh_emc scsi_dh_alua msr efivarfs
> Feb 15 08:44:49.840786 myhost kernel: CPU: 7 PID: 755 Comm: kworker/7:2
> Tainted: G O 6.1.10-1-default #1 openSUSE Tumbleweed
> 22576c8b47239465c1855ce27337697dac36c24c
> Feb 15 08:44:49.840809 myhost kernel: Hardware name: GIGABYTE
> GB-BRR7H-4800/GB-BRR7H-4800, BIOS F5 05/05/2021
> Feb 15 08:44:49.840827 myhost kernel: Workqueue: events
> register_cache_worker [bcache]
> Feb 15 08:44:49.840844 myhost kernel: RIP:
> 0010:journal_read_bucket+0x3df/0x490 [bcache]
> Feb 15 08:44:49.840860 myhost kernel: Code: 00 00 00 48 89 ee 48 c7 c2 70 c4
> cb c0 48 c7 c7 a8 c4 cb c0 4c 89 5c 24 48 48 89 44 24 20 c6 05 21 c8 02 00
> 01 e8 3e f5 65 f1 <0f> 0b 4c 8b 5c 24 48 48 8b 44 24 20 e9 6b ff ff ff 44 8b
> 74 24 54
> Feb 15 08:44:49.840884 myhost kernel: RSP: 0018:ffffb6fe01893c98 EFLAGS:
> 00010282
> Feb 15 08:44:49.840900 myhost kernel: RAX: 0000000000000000 RBX:
> ffff95ebc2a3c000 RCX: 0000000000000027
> Feb 15 08:44:49.840915 myhost kernel: RDX: ffff95f2af7e24e8 RSI:
> 0000000000000001 RDI: ffff95f2af7e24e0
> Feb 15 08:44:49.840932 myhost kernel: RBP: 0000000000000108 R08:
> 0000000000000000 R09: ffffb6fe01893b40
> Feb 15 08:44:49.840948 myhost kernel: R10: 0000000000000003 R11:
> ffff95f2cf2ff228 R12: dead000000000122
> Feb 15 08:44:49.840965 myhost kernel: R13: dead000000000100 R14:
> ffff95ebc46a8400 R15: ffffb6fe01893e08
> Feb 15 08:44:49.840981 myhost kernel: FS: 0000000000000000(0000)
> GS:ffff95f2af7c0000(0000) knlGS:0000000000000000
> Feb 15 08:44:49.840998 myhost kernel: CS: 0010 DS: 0000 ES: 0000 CR0:
> 0000000080050033
> Feb 15 08:44:49.841014 myhost kernel: CR2: 00007f166249afe0 CR3:
> 000000010323e000 CR4: 0000000000350ee0
> Feb 15 08:44:49.841030 myhost kernel: Call Trace:
> Feb 15 08:44:49.841047 myhost kernel: <TASK>
> Feb 15 08:44:49.841067 myhost kernel: ? bch_btree_exit+0x20/0x20 [bcache
> f7676faef63111511583961fa9b18ec07deb88c4]
> Feb 15 08:44:49.841090 myhost kernel: bch_journal_read+0x79/0x320 [bcache
> f7676faef63111511583961fa9b18ec07deb88c4]
> Feb 15 08:44:49.841108 myhost kernel: register_cache_worker+0x99f/0x11c0
> [bcache f7676faef63111511583961fa9b18ec07deb88c4]
> Feb 15 08:44:49.841125 myhost kernel: ?
> finish_task_switch.isra.0+0x90/0x2d0
> Feb 15 08:44:49.841141 myhost kernel: process_one_work+0x20c/0x3d0
> Feb 15 08:44:49.841157 myhost kernel: worker_thread+0x4a/0x3b0
> Feb 15 08:44:49.841173 myhost kernel: ? process_one_work+0x3d0/0x3d0
> Feb 15 08:44:49.841188 myhost kernel: kthread+0xd7/0x100
> Feb 15 08:44:49.841203 myhost kernel: ? kthread_complete_and_exit+0x20/0x20
> Feb 15 08:44:49.841219 myhost kernel: ret_from_fork+0x1f/0x30
> Feb 15 08:44:49.841236 myhost kernel: </TASK>
> Feb 15 08:44:49.841251 myhost kernel: ---[ end trace 0000000000000000 ]---
> Feb 15 08:44:49.848553 myhost kernel: sr 1:0:0:0: [sr0] scsi3-mmc drive:
> 24x/24x writer dvd-ram cd/rw xa/form2 cdda tray
> Feb 15 08:44:49.848843 myhost kernel: cdrom: Uniform CD-ROM driver Revision:
> 3.20
> Feb 15 08:44:49.872544 myhost kernel: plantronics 0003:047F:1200.0004:
> input,hiddev96,hidraw3: USB HID v1.11 Device [Plantronics Plantronics
> Calisto 7200] on usb-0000:04:00.0-2.4/input3
> Feb 15 08:44:49.876547 myhost kernel: sr 1:0:0:0: Attached scsi CD-ROM sr0
> Feb 15 08:44:49.880540 myhost kernel: ------------[ cut here ]------------
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: bcache kernel panic
2023-02-16 18:00 ` Matthias Ferdinand
@ 2023-02-16 18:06 ` Stefan Boehringer
2023-02-16 20:44 ` Eric Wheeler
2023-02-16 21:11 ` Matthias Ferdinand
0 siblings, 2 replies; 7+ messages in thread
From: Stefan Boehringer @ 2023-02-16 18:06 UTC (permalink / raw)
To: Matthias Ferdinand; +Cc: linux-bcache
Dear Mathias,
thank you for the update. I look forward to the update. For me, it is a
hard crash as the screen goes green and I cannot input anything anymore.
I still hear hard-drive activity, so the system seems to be still up
(maybe usable via ssh, but haven't tried). I have to perform a hard reset.
I have not experienced any data loss.
Thank you, best,
Stefan
On 2/16/23 19:00, Matthias Ferdinand wrote:
> Hi,
>
> there has been a thread referencing "field-spanning writes" recently:
>
> https://www.spinics.net/lists/linux-bcache/msg11631.html
>
> I understood this to be some kind of false positive, to be fixed in some
> later relase of 6.1.x kernels.
>
> Does the system become unusable or is this green-screen just a warning?
>
> Regards
> Matthias Ferdinand
>
>
> On Thu, Feb 16, 2023 at 05:58:15PM +0100, Stefan Boehringer wrote:
>> Dear bache maintainer,
>>
>> I would like to report a kernel panic for bcache that is unfortunately not
>> reproducible. I get this error roughly once a week, resulting in a green
>> screen on my system. Please let me know, if I can provide further
>> information to fix the bug. Below dmesg output copy-pasted as instructed.
>>
>> Thank you, best,
>>
>> Stefan
>>
>>
>> Feb 15 08:44:49.840548 myhost kernel: ------------[ cut here ]------------
>>
>> Feb 15 08:44:49.840614 myhost kernel: memcpy: detected field-spanning write
>> (size 264) of single field "&i
>> ->j" at drivers/md/bcache/journal.c:152 (size 240)
>> Feb 15 08:44:49.840633 myhost kernel: WARNING: CPU: 7 PID: 755 at
>> drivers/md/bcache/journal.c:152 journal_
>> read_bucket+0x3df/0x490 [bcache]
>> Feb 15 08:44:49.840649 myhost kernel: Modules linked in: snd_hwdep(+) kvm(+)
>> snd_pcm videobuf2_vmalloc(+)
>> videobuf2_memops snd_timer videobuf2_v4l2 sr_mod(+) snd real
>> tek cdrom pcspkr efi_pstore k10temp videobuf2_common i2c_piix4
>> hid_plantronics(+) irqbypass pcc_cpufreq(-) mdio_devres joydev soundcore
>> cfg80211 libphy bcache tiny_power_button acpi_cpufreq button fuse configfs
>> dmi_sysfs ip_tables x_tables btusb btrtl btbcm btintel btmtk bluetooth
>> hid_generic uas ecdh_generic usbhid usb_storage rfkill amdgpu
>> crct10dif_pclmul crc32_pclmul polyval_clmulni polyval_generic gf128mul
>> drm_ttm_helper ttm ghash_clmulni_intel iommu_v2 xhci_pci gpu_sched
>> sha512_ssse3 xhci_pci_renesas xhci_hcd drm_buddy aesni_intel
>> drm_display_helper nvme crypto_simd usbcore cryptd cec ccp nvme_core
>> sp5100_tco rc_core amd_sfh video wmi btrfs blake2b_generic libcrc32c
>> crc32c_intel xor raid6_pq v4l2loopback(O) videodev mc sg dm_multipath dm_mod
>> scsi_dh_rdac scsi_dh_emc scsi_dh_alua msr efivarfs
>> Feb 15 08:44:49.840786 myhost kernel: CPU: 7 PID: 755 Comm: kworker/7:2
>> Tainted: G O 6.1.10-1-default #1 openSUSE Tumbleweed
>> 22576c8b47239465c1855ce27337697dac36c24c
>> Feb 15 08:44:49.840809 myhost kernel: Hardware name: GIGABYTE
>> GB-BRR7H-4800/GB-BRR7H-4800, BIOS F5 05/05/2021
>> Feb 15 08:44:49.840827 myhost kernel: Workqueue: events
>> register_cache_worker [bcache]
>> Feb 15 08:44:49.840844 myhost kernel: RIP:
>> 0010:journal_read_bucket+0x3df/0x490 [bcache]
>> Feb 15 08:44:49.840860 myhost kernel: Code: 00 00 00 48 89 ee 48 c7 c2 70 c4
>> cb c0 48 c7 c7 a8 c4 cb c0 4c 89 5c 24 48 48 89 44 24 20 c6 05 21 c8 02 00
>> 01 e8 3e f5 65 f1 <0f> 0b 4c 8b 5c 24 48 48 8b 44 24 20 e9 6b ff ff ff 44 8b
>> 74 24 54
>> Feb 15 08:44:49.840884 myhost kernel: RSP: 0018:ffffb6fe01893c98 EFLAGS:
>> 00010282
>> Feb 15 08:44:49.840900 myhost kernel: RAX: 0000000000000000 RBX:
>> ffff95ebc2a3c000 RCX: 0000000000000027
>> Feb 15 08:44:49.840915 myhost kernel: RDX: ffff95f2af7e24e8 RSI:
>> 0000000000000001 RDI: ffff95f2af7e24e0
>> Feb 15 08:44:49.840932 myhost kernel: RBP: 0000000000000108 R08:
>> 0000000000000000 R09: ffffb6fe01893b40
>> Feb 15 08:44:49.840948 myhost kernel: R10: 0000000000000003 R11:
>> ffff95f2cf2ff228 R12: dead000000000122
>> Feb 15 08:44:49.840965 myhost kernel: R13: dead000000000100 R14:
>> ffff95ebc46a8400 R15: ffffb6fe01893e08
>> Feb 15 08:44:49.840981 myhost kernel: FS: 0000000000000000(0000)
>> GS:ffff95f2af7c0000(0000) knlGS:0000000000000000
>> Feb 15 08:44:49.840998 myhost kernel: CS: 0010 DS: 0000 ES: 0000 CR0:
>> 0000000080050033
>> Feb 15 08:44:49.841014 myhost kernel: CR2: 00007f166249afe0 CR3:
>> 000000010323e000 CR4: 0000000000350ee0
>> Feb 15 08:44:49.841030 myhost kernel: Call Trace:
>> Feb 15 08:44:49.841047 myhost kernel: <TASK>
>> Feb 15 08:44:49.841067 myhost kernel: ? bch_btree_exit+0x20/0x20 [bcache
>> f7676faef63111511583961fa9b18ec07deb88c4]
>> Feb 15 08:44:49.841090 myhost kernel: bch_journal_read+0x79/0x320 [bcache
>> f7676faef63111511583961fa9b18ec07deb88c4]
>> Feb 15 08:44:49.841108 myhost kernel: register_cache_worker+0x99f/0x11c0
>> [bcache f7676faef63111511583961fa9b18ec07deb88c4]
>> Feb 15 08:44:49.841125 myhost kernel: ?
>> finish_task_switch.isra.0+0x90/0x2d0
>> Feb 15 08:44:49.841141 myhost kernel: process_one_work+0x20c/0x3d0
>> Feb 15 08:44:49.841157 myhost kernel: worker_thread+0x4a/0x3b0
>> Feb 15 08:44:49.841173 myhost kernel: ? process_one_work+0x3d0/0x3d0
>> Feb 15 08:44:49.841188 myhost kernel: kthread+0xd7/0x100
>> Feb 15 08:44:49.841203 myhost kernel: ? kthread_complete_and_exit+0x20/0x20
>> Feb 15 08:44:49.841219 myhost kernel: ret_from_fork+0x1f/0x30
>> Feb 15 08:44:49.841236 myhost kernel: </TASK>
>> Feb 15 08:44:49.841251 myhost kernel: ---[ end trace 0000000000000000 ]---
>> Feb 15 08:44:49.848553 myhost kernel: sr 1:0:0:0: [sr0] scsi3-mmc drive:
>> 24x/24x writer dvd-ram cd/rw xa/form2 cdda tray
>> Feb 15 08:44:49.848843 myhost kernel: cdrom: Uniform CD-ROM driver Revision:
>> 3.20
>> Feb 15 08:44:49.872544 myhost kernel: plantronics 0003:047F:1200.0004:
>> input,hiddev96,hidraw3: USB HID v1.11 Device [Plantronics Plantronics
>> Calisto 7200] on usb-0000:04:00.0-2.4/input3
>> Feb 15 08:44:49.876547 myhost kernel: sr 1:0:0:0: Attached scsi CD-ROM sr0
>> Feb 15 08:44:49.880540 myhost kernel: ------------[ cut here ]------------
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: bcache kernel panic
2023-02-16 18:06 ` Stefan Boehringer
@ 2023-02-16 20:44 ` Eric Wheeler
2023-02-16 21:11 ` Matthias Ferdinand
1 sibling, 0 replies; 7+ messages in thread
From: Eric Wheeler @ 2023-02-16 20:44 UTC (permalink / raw)
To: Stefan Boehringer; +Cc: Matthias Ferdinand, linux-bcache
[-- Attachment #1: Type: text/plain, Size: 6632 bytes --]
On Thu, 16 Feb 2023, Stefan Boehringer wrote:
> Dear Mathias,
>
> thank you for the update. I look forward to the update. For me, it is a
> hard crash as the screen goes green and I cannot input anything anymore.
> I still hear hard-drive activity, so the system seems to be still up
> (maybe usable via ssh, but haven't tried). I have to perform a hard
> reset.
You might setup `netconsole` or a serial console to get the kernel's
backtrace the moment it does a green screen. For example:
https://wiki.ubuntu.com/Kernel/Netconsole
Maybe that will provide more info.
--
Eric Wheeler
>
> I have not experienced any data loss.
>
> Thank you, best,
>
> Stefan
>
> On 2/16/23 19:00, Matthias Ferdinand wrote:
> > Hi,
> >
> > there has been a thread referencing "field-spanning writes" recently:
> >
> > https://www.spinics.net/lists/linux-bcache/msg11631.html
> >
> > I understood this to be some kind of false positive, to be fixed in some
> > later relase of 6.1.x kernels.
> >
> > Does the system become unusable or is this green-screen just a warning?
> >
> > Regards
> > Matthias Ferdinand
> >
> >
> > On Thu, Feb 16, 2023 at 05:58:15PM +0100, Stefan Boehringer wrote:
> >> Dear bache maintainer,
> >>
> >> I would like to report a kernel panic for bcache that is unfortunately not
> >> reproducible. I get this error roughly once a week, resulting in a green
> >> screen on my system. Please let me know, if I can provide further
> >> information to fix the bug. Below dmesg output copy-pasted as instructed.
> >>
> >> Thank you, best,
> >>
> >> Stefan
> >>
> >>
> >> Feb 15 08:44:49.840548 myhost kernel: ------------[ cut here ]------------
> >>
> >> Feb 15 08:44:49.840614 myhost kernel: memcpy: detected field-spanning write
> >> (size 264) of single field "&i
> >> ->j" at drivers/md/bcache/journal.c:152 (size 240)
> >> Feb 15 08:44:49.840633 myhost kernel: WARNING: CPU: 7 PID: 755 at
> >> drivers/md/bcache/journal.c:152 journal_
> >> read_bucket+0x3df/0x490 [bcache]
> >> Feb 15 08:44:49.840649 myhost kernel: Modules linked in: snd_hwdep(+)
> >> kvm(+)
> >> snd_pcm videobuf2_vmalloc(+)
> >> videobuf2_memops snd_timer videobuf2_v4l2 sr_mod(+) snd real
> >> tek cdrom pcspkr efi_pstore k10temp videobuf2_common i2c_piix4
> >> hid_plantronics(+) irqbypass pcc_cpufreq(-) mdio_devres joydev soundcore
> >> cfg80211 libphy bcache tiny_power_button acpi_cpufreq button fuse configfs
> >> dmi_sysfs ip_tables x_tables btusb btrtl btbcm btintel btmtk bluetooth
> >> hid_generic uas ecdh_generic usbhid usb_storage rfkill amdgpu
> >> crct10dif_pclmul crc32_pclmul polyval_clmulni polyval_generic gf128mul
> >> drm_ttm_helper ttm ghash_clmulni_intel iommu_v2 xhci_pci gpu_sched
> >> sha512_ssse3 xhci_pci_renesas xhci_hcd drm_buddy aesni_intel
> >> drm_display_helper nvme crypto_simd usbcore cryptd cec ccp nvme_core
> >> sp5100_tco rc_core amd_sfh video wmi btrfs blake2b_generic libcrc32c
> >> crc32c_intel xor raid6_pq v4l2loopback(O) videodev mc sg dm_multipath
> >> dm_mod
> >> scsi_dh_rdac scsi_dh_emc scsi_dh_alua msr efivarfs
> >> Feb 15 08:44:49.840786 myhost kernel: CPU: 7 PID: 755 Comm: kworker/7:2
> >> Tainted: G O 6.1.10-1-default #1 openSUSE Tumbleweed
> >> 22576c8b47239465c1855ce27337697dac36c24c
> >> Feb 15 08:44:49.840809 myhost kernel: Hardware name: GIGABYTE
> >> GB-BRR7H-4800/GB-BRR7H-4800, BIOS F5 05/05/2021
> >> Feb 15 08:44:49.840827 myhost kernel: Workqueue: events
> >> register_cache_worker [bcache]
> >> Feb 15 08:44:49.840844 myhost kernel: RIP:
> >> 0010:journal_read_bucket+0x3df/0x490 [bcache]
> >> Feb 15 08:44:49.840860 myhost kernel: Code: 00 00 00 48 89 ee 48 c7 c2 70
> >> c4
> >> cb c0 48 c7 c7 a8 c4 cb c0 4c 89 5c 24 48 48 89 44 24 20 c6 05 21 c8 02 00
> >> 01 e8 3e f5 65 f1 <0f> 0b 4c 8b 5c 24 48 48 8b 44 24 20 e9 6b ff ff ff 44
> >> 8b
> >> 74 24 54
> >> Feb 15 08:44:49.840884 myhost kernel: RSP: 0018:ffffb6fe01893c98 EFLAGS:
> >> 00010282
> >> Feb 15 08:44:49.840900 myhost kernel: RAX: 0000000000000000 RBX:
> >> ffff95ebc2a3c000 RCX: 0000000000000027
> >> Feb 15 08:44:49.840915 myhost kernel: RDX: ffff95f2af7e24e8 RSI:
> >> 0000000000000001 RDI: ffff95f2af7e24e0
> >> Feb 15 08:44:49.840932 myhost kernel: RBP: 0000000000000108 R08:
> >> 0000000000000000 R09: ffffb6fe01893b40
> >> Feb 15 08:44:49.840948 myhost kernel: R10: 0000000000000003 R11:
> >> ffff95f2cf2ff228 R12: dead000000000122
> >> Feb 15 08:44:49.840965 myhost kernel: R13: dead000000000100 R14:
> >> ffff95ebc46a8400 R15: ffffb6fe01893e08
> >> Feb 15 08:44:49.840981 myhost kernel: FS: 0000000000000000(0000)
> >> GS:ffff95f2af7c0000(0000) knlGS:0000000000000000
> >> Feb 15 08:44:49.840998 myhost kernel: CS: 0010 DS: 0000 ES: 0000 CR0:
> >> 0000000080050033
> >> Feb 15 08:44:49.841014 myhost kernel: CR2: 00007f166249afe0 CR3:
> >> 000000010323e000 CR4: 0000000000350ee0
> >> Feb 15 08:44:49.841030 myhost kernel: Call Trace:
> >> Feb 15 08:44:49.841047 myhost kernel: <TASK>
> >> Feb 15 08:44:49.841067 myhost kernel: ? bch_btree_exit+0x20/0x20 [bcache
> >> f7676faef63111511583961fa9b18ec07deb88c4]
> >> Feb 15 08:44:49.841090 myhost kernel: bch_journal_read+0x79/0x320 [bcache
> >> f7676faef63111511583961fa9b18ec07deb88c4]
> >> Feb 15 08:44:49.841108 myhost kernel: register_cache_worker+0x99f/0x11c0
> >> [bcache f7676faef63111511583961fa9b18ec07deb88c4]
> >> Feb 15 08:44:49.841125 myhost kernel: ?
> >> finish_task_switch.isra.0+0x90/0x2d0
> >> Feb 15 08:44:49.841141 myhost kernel: process_one_work+0x20c/0x3d0
> >> Feb 15 08:44:49.841157 myhost kernel: worker_thread+0x4a/0x3b0
> >> Feb 15 08:44:49.841173 myhost kernel: ? process_one_work+0x3d0/0x3d0
> >> Feb 15 08:44:49.841188 myhost kernel: kthread+0xd7/0x100
> >> Feb 15 08:44:49.841203 myhost kernel: ?
> >> kthread_complete_and_exit+0x20/0x20
> >> Feb 15 08:44:49.841219 myhost kernel: ret_from_fork+0x1f/0x30
> >> Feb 15 08:44:49.841236 myhost kernel: </TASK>
> >> Feb 15 08:44:49.841251 myhost kernel: ---[ end trace 0000000000000000 ]---
> >> Feb 15 08:44:49.848553 myhost kernel: sr 1:0:0:0: [sr0] scsi3-mmc drive:
> >> 24x/24x writer dvd-ram cd/rw xa/form2 cdda tray
> >> Feb 15 08:44:49.848843 myhost kernel: cdrom: Uniform CD-ROM driver
> >> Revision:
> >> 3.20
> >> Feb 15 08:44:49.872544 myhost kernel: plantronics 0003:047F:1200.0004:
> >> input,hiddev96,hidraw3: USB HID v1.11 Device [Plantronics Plantronics
> >> Calisto 7200] on usb-0000:04:00.0-2.4/input3
> >> Feb 15 08:44:49.876547 myhost kernel: sr 1:0:0:0: Attached scsi CD-ROM sr0
> >> Feb 15 08:44:49.880540 myhost kernel: ------------[ cut here ]------------
>
>
>
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: bcache kernel panic
2023-02-16 18:06 ` Stefan Boehringer
2023-02-16 20:44 ` Eric Wheeler
@ 2023-02-16 21:11 ` Matthias Ferdinand
2023-02-16 22:31 ` Eric Wheeler
1 sibling, 1 reply; 7+ messages in thread
From: Matthias Ferdinand @ 2023-02-16 21:11 UTC (permalink / raw)
To: Stefan Boehringer; +Cc: linux-bcache
On Thu, Feb 16, 2023 at 07:06:05PM +0100, Stefan Boehringer wrote:
> Dear Mathias,
>
> thank you for the update. I look forward to the update. For me, it is a hard
> crash as the screen goes green and I cannot input anything anymore. I still
> hear hard-drive activity, so the system seems to be still up (maybe usable
> via ssh, but haven't tried). I have to perform a hard reset.
>
> I have not experienced any data loss.
Major nuisance on desktop or notebook machines indeed.
I am not a tumbleweed user, but for the time being you might want to go
back to a slightly older kernel (e.g. on Arch Linux there is the
fast-moving "linux" package and a separate "linux-lts" package).
I haven't seen machines locking up or lose keyboard/screen from a kernel
WARN() (but also don't see many WARNs to begin with...). Is this
perhaps a hardening feature in SuSE/tumbleweed? Some people want WARN()s
to be handled harshly, I found this discussion on lwn:
https://lwn.net/Articles/876209/
If so, you could tune it to be less strict until bcache gets patched in
the mainstream kernel.
Matthias
>
> Thank you, best,
>
> Stefan
>
> On 2/16/23 19:00, Matthias Ferdinand wrote:
> > Hi,
> >
> > there has been a thread referencing "field-spanning writes" recently:
> >
> > https://www.spinics.net/lists/linux-bcache/msg11631.html
> >
> > I understood this to be some kind of false positive, to be fixed in some
> > later relase of 6.1.x kernels.
> >
> > Does the system become unusable or is this green-screen just a warning?
> >
> > Regards
> > Matthias Ferdinand
> >
> >
> > On Thu, Feb 16, 2023 at 05:58:15PM +0100, Stefan Boehringer wrote:
> > > Dear bache maintainer,
> > >
> > > I would like to report a kernel panic for bcache that is unfortunately not
> > > reproducible. I get this error roughly once a week, resulting in a green
> > > screen on my system. Please let me know, if I can provide further
> > > information to fix the bug. Below dmesg output copy-pasted as instructed.
> > >
> > > Thank you, best,
> > >
> > > Stefan
> > >
> > >
> > > Feb 15 08:44:49.840548 myhost kernel: ------------[ cut here ]------------
> > >
> > > Feb 15 08:44:49.840614 myhost kernel: memcpy: detected field-spanning write
> > > (size 264) of single field "&i
> > > ->j" at drivers/md/bcache/journal.c:152 (size 240)
> > > Feb 15 08:44:49.840633 myhost kernel: WARNING: CPU: 7 PID: 755 at
> > > drivers/md/bcache/journal.c:152 journal_
> > > read_bucket+0x3df/0x490 [bcache]
> > > Feb 15 08:44:49.840649 myhost kernel: Modules linked in: snd_hwdep(+) kvm(+)
> > > snd_pcm videobuf2_vmalloc(+)
> > > videobuf2_memops snd_timer videobuf2_v4l2 sr_mod(+) snd real
> > > tek cdrom pcspkr efi_pstore k10temp videobuf2_common i2c_piix4
> > > hid_plantronics(+) irqbypass pcc_cpufreq(-) mdio_devres joydev soundcore
> > > cfg80211 libphy bcache tiny_power_button acpi_cpufreq button fuse configfs
> > > dmi_sysfs ip_tables x_tables btusb btrtl btbcm btintel btmtk bluetooth
> > > hid_generic uas ecdh_generic usbhid usb_storage rfkill amdgpu
> > > crct10dif_pclmul crc32_pclmul polyval_clmulni polyval_generic gf128mul
> > > drm_ttm_helper ttm ghash_clmulni_intel iommu_v2 xhci_pci gpu_sched
> > > sha512_ssse3 xhci_pci_renesas xhci_hcd drm_buddy aesni_intel
> > > drm_display_helper nvme crypto_simd usbcore cryptd cec ccp nvme_core
> > > sp5100_tco rc_core amd_sfh video wmi btrfs blake2b_generic libcrc32c
> > > crc32c_intel xor raid6_pq v4l2loopback(O) videodev mc sg dm_multipath dm_mod
> > > scsi_dh_rdac scsi_dh_emc scsi_dh_alua msr efivarfs
> > > Feb 15 08:44:49.840786 myhost kernel: CPU: 7 PID: 755 Comm: kworker/7:2
> > > Tainted: G O 6.1.10-1-default #1 openSUSE Tumbleweed
> > > 22576c8b47239465c1855ce27337697dac36c24c
> > > Feb 15 08:44:49.840809 myhost kernel: Hardware name: GIGABYTE
> > > GB-BRR7H-4800/GB-BRR7H-4800, BIOS F5 05/05/2021
> > > Feb 15 08:44:49.840827 myhost kernel: Workqueue: events
> > > register_cache_worker [bcache]
> > > Feb 15 08:44:49.840844 myhost kernel: RIP:
> > > 0010:journal_read_bucket+0x3df/0x490 [bcache]
> > > Feb 15 08:44:49.840860 myhost kernel: Code: 00 00 00 48 89 ee 48 c7 c2 70 c4
> > > cb c0 48 c7 c7 a8 c4 cb c0 4c 89 5c 24 48 48 89 44 24 20 c6 05 21 c8 02 00
> > > 01 e8 3e f5 65 f1 <0f> 0b 4c 8b 5c 24 48 48 8b 44 24 20 e9 6b ff ff ff 44 8b
> > > 74 24 54
> > > Feb 15 08:44:49.840884 myhost kernel: RSP: 0018:ffffb6fe01893c98 EFLAGS:
> > > 00010282
> > > Feb 15 08:44:49.840900 myhost kernel: RAX: 0000000000000000 RBX:
> > > ffff95ebc2a3c000 RCX: 0000000000000027
> > > Feb 15 08:44:49.840915 myhost kernel: RDX: ffff95f2af7e24e8 RSI:
> > > 0000000000000001 RDI: ffff95f2af7e24e0
> > > Feb 15 08:44:49.840932 myhost kernel: RBP: 0000000000000108 R08:
> > > 0000000000000000 R09: ffffb6fe01893b40
> > > Feb 15 08:44:49.840948 myhost kernel: R10: 0000000000000003 R11:
> > > ffff95f2cf2ff228 R12: dead000000000122
> > > Feb 15 08:44:49.840965 myhost kernel: R13: dead000000000100 R14:
> > > ffff95ebc46a8400 R15: ffffb6fe01893e08
> > > Feb 15 08:44:49.840981 myhost kernel: FS: 0000000000000000(0000)
> > > GS:ffff95f2af7c0000(0000) knlGS:0000000000000000
> > > Feb 15 08:44:49.840998 myhost kernel: CS: 0010 DS: 0000 ES: 0000 CR0:
> > > 0000000080050033
> > > Feb 15 08:44:49.841014 myhost kernel: CR2: 00007f166249afe0 CR3:
> > > 000000010323e000 CR4: 0000000000350ee0
> > > Feb 15 08:44:49.841030 myhost kernel: Call Trace:
> > > Feb 15 08:44:49.841047 myhost kernel: <TASK>
> > > Feb 15 08:44:49.841067 myhost kernel: ? bch_btree_exit+0x20/0x20 [bcache
> > > f7676faef63111511583961fa9b18ec07deb88c4]
> > > Feb 15 08:44:49.841090 myhost kernel: bch_journal_read+0x79/0x320 [bcache
> > > f7676faef63111511583961fa9b18ec07deb88c4]
> > > Feb 15 08:44:49.841108 myhost kernel: register_cache_worker+0x99f/0x11c0
> > > [bcache f7676faef63111511583961fa9b18ec07deb88c4]
> > > Feb 15 08:44:49.841125 myhost kernel: ?
> > > finish_task_switch.isra.0+0x90/0x2d0
> > > Feb 15 08:44:49.841141 myhost kernel: process_one_work+0x20c/0x3d0
> > > Feb 15 08:44:49.841157 myhost kernel: worker_thread+0x4a/0x3b0
> > > Feb 15 08:44:49.841173 myhost kernel: ? process_one_work+0x3d0/0x3d0
> > > Feb 15 08:44:49.841188 myhost kernel: kthread+0xd7/0x100
> > > Feb 15 08:44:49.841203 myhost kernel: ? kthread_complete_and_exit+0x20/0x20
> > > Feb 15 08:44:49.841219 myhost kernel: ret_from_fork+0x1f/0x30
> > > Feb 15 08:44:49.841236 myhost kernel: </TASK>
> > > Feb 15 08:44:49.841251 myhost kernel: ---[ end trace 0000000000000000 ]---
> > > Feb 15 08:44:49.848553 myhost kernel: sr 1:0:0:0: [sr0] scsi3-mmc drive:
> > > 24x/24x writer dvd-ram cd/rw xa/form2 cdda tray
> > > Feb 15 08:44:49.848843 myhost kernel: cdrom: Uniform CD-ROM driver Revision:
> > > 3.20
> > > Feb 15 08:44:49.872544 myhost kernel: plantronics 0003:047F:1200.0004:
> > > input,hiddev96,hidraw3: USB HID v1.11 Device [Plantronics Plantronics
> > > Calisto 7200] on usb-0000:04:00.0-2.4/input3
> > > Feb 15 08:44:49.876547 myhost kernel: sr 1:0:0:0: Attached scsi CD-ROM sr0
> > > Feb 15 08:44:49.880540 myhost kernel: ------------[ cut here ]------------
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: bcache kernel panic
2023-02-16 21:11 ` Matthias Ferdinand
@ 2023-02-16 22:31 ` Eric Wheeler
2023-02-18 15:26 ` Stefan Boehringer
0 siblings, 1 reply; 7+ messages in thread
From: Eric Wheeler @ 2023-02-16 22:31 UTC (permalink / raw)
To: Matthias Ferdinand; +Cc: Stefan Boehringer, linux-bcache
[-- Attachment #1: Type: text/plain, Size: 7894 bytes --]
On Thu, 16 Feb 2023, Matthias Ferdinand wrote:
> On Thu, Feb 16, 2023 at 07:06:05PM +0100, Stefan Boehringer wrote:
> > Dear Mathias,
> >
> > thank you for the update. I look forward to the update.
FYI: This is the bcache-specific update:
https://lore.kernel.org/lkml/20230106060229.never.047-kees@kernel.org/
All it does is ignore the warning! You will not get the warning in your
kernel logs; whatever issue you are having, this most certainly will
_not_ fix it.
From the dmesg log you pasted, it looks like you are using a kernel
provided by tumbleweed, so you might try building your own from the
vanilla tree.
-Eric
> > For me, it is a hard crash as the screen goes green and I cannot input
> > anything anymore. I still hear hard-drive activity, so the system
> > seems to be still up (maybe usable via ssh, but haven't tried). I have
> > to perform a hard reset.
> >
> > I have not experienced any data loss.
>
> Major nuisance on desktop or notebook machines indeed.
>
> I am not a tumbleweed user, but for the time being you might want to go
> back to a slightly older kernel (e.g. on Arch Linux there is the
> fast-moving "linux" package and a separate "linux-lts" package).
>
> I haven't seen machines locking up or lose keyboard/screen from a kernel
> WARN() (but also don't see many WARNs to begin with...). Is this
> perhaps a hardening feature in SuSE/tumbleweed? Some people want WARN()s
> to be handled harshly, I found this discussion on lwn:
> https://lwn.net/Articles/876209/
> If so, you could tune it to be less strict until bcache gets patched in
> the mainstream kernel.
>
> Matthias
>
> >
> > Thank you, best,
> >
> > Stefan
> >
> > On 2/16/23 19:00, Matthias Ferdinand wrote:
> > > Hi,
> > >
> > > there has been a thread referencing "field-spanning writes" recently:
> > >
> > > https://www.spinics.net/lists/linux-bcache/msg11631.html
> > >
> > > I understood this to be some kind of false positive, to be fixed in some
> > > later relase of 6.1.x kernels.
> > >
> > > Does the system become unusable or is this green-screen just a warning?
> > >
> > > Regards
> > > Matthias Ferdinand
> > >
> > >
> > > On Thu, Feb 16, 2023 at 05:58:15PM +0100, Stefan Boehringer wrote:
> > > > Dear bache maintainer,
> > > >
> > > > I would like to report a kernel panic for bcache that is unfortunately not
> > > > reproducible. I get this error roughly once a week, resulting in a green
> > > > screen on my system. Please let me know, if I can provide further
> > > > information to fix the bug. Below dmesg output copy-pasted as instructed.
> > > >
> > > > Thank you, best,
> > > >
> > > > Stefan
> > > >
> > > >
> > > > Feb 15 08:44:49.840548 myhost kernel: ------------[ cut here ]------------
> > > >
> > > > Feb 15 08:44:49.840614 myhost kernel: memcpy: detected field-spanning write
> > > > (size 264) of single field "&i
> > > > ->j" at drivers/md/bcache/journal.c:152 (size 240)
> > > > Feb 15 08:44:49.840633 myhost kernel: WARNING: CPU: 7 PID: 755 at
> > > > drivers/md/bcache/journal.c:152 journal_
> > > > read_bucket+0x3df/0x490 [bcache]
> > > > Feb 15 08:44:49.840649 myhost kernel: Modules linked in: snd_hwdep(+) kvm(+)
> > > > snd_pcm videobuf2_vmalloc(+)
> > > > videobuf2_memops snd_timer videobuf2_v4l2 sr_mod(+) snd real
> > > > tek cdrom pcspkr efi_pstore k10temp videobuf2_common i2c_piix4
> > > > hid_plantronics(+) irqbypass pcc_cpufreq(-) mdio_devres joydev soundcore
> > > > cfg80211 libphy bcache tiny_power_button acpi_cpufreq button fuse configfs
> > > > dmi_sysfs ip_tables x_tables btusb btrtl btbcm btintel btmtk bluetooth
> > > > hid_generic uas ecdh_generic usbhid usb_storage rfkill amdgpu
> > > > crct10dif_pclmul crc32_pclmul polyval_clmulni polyval_generic gf128mul
> > > > drm_ttm_helper ttm ghash_clmulni_intel iommu_v2 xhci_pci gpu_sched
> > > > sha512_ssse3 xhci_pci_renesas xhci_hcd drm_buddy aesni_intel
> > > > drm_display_helper nvme crypto_simd usbcore cryptd cec ccp nvme_core
> > > > sp5100_tco rc_core amd_sfh video wmi btrfs blake2b_generic libcrc32c
> > > > crc32c_intel xor raid6_pq v4l2loopback(O) videodev mc sg dm_multipath dm_mod
> > > > scsi_dh_rdac scsi_dh_emc scsi_dh_alua msr efivarfs
> > > > Feb 15 08:44:49.840786 myhost kernel: CPU: 7 PID: 755 Comm: kworker/7:2
> > > > Tainted: G O 6.1.10-1-default #1 openSUSE Tumbleweed
> > > > 22576c8b47239465c1855ce27337697dac36c24c
> > > > Feb 15 08:44:49.840809 myhost kernel: Hardware name: GIGABYTE
> > > > GB-BRR7H-4800/GB-BRR7H-4800, BIOS F5 05/05/2021
> > > > Feb 15 08:44:49.840827 myhost kernel: Workqueue: events
> > > > register_cache_worker [bcache]
> > > > Feb 15 08:44:49.840844 myhost kernel: RIP:
> > > > 0010:journal_read_bucket+0x3df/0x490 [bcache]
> > > > Feb 15 08:44:49.840860 myhost kernel: Code: 00 00 00 48 89 ee 48 c7 c2 70 c4
> > > > cb c0 48 c7 c7 a8 c4 cb c0 4c 89 5c 24 48 48 89 44 24 20 c6 05 21 c8 02 00
> > > > 01 e8 3e f5 65 f1 <0f> 0b 4c 8b 5c 24 48 48 8b 44 24 20 e9 6b ff ff ff 44 8b
> > > > 74 24 54
> > > > Feb 15 08:44:49.840884 myhost kernel: RSP: 0018:ffffb6fe01893c98 EFLAGS:
> > > > 00010282
> > > > Feb 15 08:44:49.840900 myhost kernel: RAX: 0000000000000000 RBX:
> > > > ffff95ebc2a3c000 RCX: 0000000000000027
> > > > Feb 15 08:44:49.840915 myhost kernel: RDX: ffff95f2af7e24e8 RSI:
> > > > 0000000000000001 RDI: ffff95f2af7e24e0
> > > > Feb 15 08:44:49.840932 myhost kernel: RBP: 0000000000000108 R08:
> > > > 0000000000000000 R09: ffffb6fe01893b40
> > > > Feb 15 08:44:49.840948 myhost kernel: R10: 0000000000000003 R11:
> > > > ffff95f2cf2ff228 R12: dead000000000122
> > > > Feb 15 08:44:49.840965 myhost kernel: R13: dead000000000100 R14:
> > > > ffff95ebc46a8400 R15: ffffb6fe01893e08
> > > > Feb 15 08:44:49.840981 myhost kernel: FS: 0000000000000000(0000)
> > > > GS:ffff95f2af7c0000(0000) knlGS:0000000000000000
> > > > Feb 15 08:44:49.840998 myhost kernel: CS: 0010 DS: 0000 ES: 0000 CR0:
> > > > 0000000080050033
> > > > Feb 15 08:44:49.841014 myhost kernel: CR2: 00007f166249afe0 CR3:
> > > > 000000010323e000 CR4: 0000000000350ee0
> > > > Feb 15 08:44:49.841030 myhost kernel: Call Trace:
> > > > Feb 15 08:44:49.841047 myhost kernel: <TASK>
> > > > Feb 15 08:44:49.841067 myhost kernel: ? bch_btree_exit+0x20/0x20 [bcache
> > > > f7676faef63111511583961fa9b18ec07deb88c4]
> > > > Feb 15 08:44:49.841090 myhost kernel: bch_journal_read+0x79/0x320 [bcache
> > > > f7676faef63111511583961fa9b18ec07deb88c4]
> > > > Feb 15 08:44:49.841108 myhost kernel: register_cache_worker+0x99f/0x11c0
> > > > [bcache f7676faef63111511583961fa9b18ec07deb88c4]
> > > > Feb 15 08:44:49.841125 myhost kernel: ?
> > > > finish_task_switch.isra.0+0x90/0x2d0
> > > > Feb 15 08:44:49.841141 myhost kernel: process_one_work+0x20c/0x3d0
> > > > Feb 15 08:44:49.841157 myhost kernel: worker_thread+0x4a/0x3b0
> > > > Feb 15 08:44:49.841173 myhost kernel: ? process_one_work+0x3d0/0x3d0
> > > > Feb 15 08:44:49.841188 myhost kernel: kthread+0xd7/0x100
> > > > Feb 15 08:44:49.841203 myhost kernel: ? kthread_complete_and_exit+0x20/0x20
> > > > Feb 15 08:44:49.841219 myhost kernel: ret_from_fork+0x1f/0x30
> > > > Feb 15 08:44:49.841236 myhost kernel: </TASK>
> > > > Feb 15 08:44:49.841251 myhost kernel: ---[ end trace 0000000000000000 ]---
> > > > Feb 15 08:44:49.848553 myhost kernel: sr 1:0:0:0: [sr0] scsi3-mmc drive:
> > > > 24x/24x writer dvd-ram cd/rw xa/form2 cdda tray
> > > > Feb 15 08:44:49.848843 myhost kernel: cdrom: Uniform CD-ROM driver Revision:
> > > > 3.20
> > > > Feb 15 08:44:49.872544 myhost kernel: plantronics 0003:047F:1200.0004:
> > > > input,hiddev96,hidraw3: USB HID v1.11 Device [Plantronics Plantronics
> > > > Calisto 7200] on usb-0000:04:00.0-2.4/input3
> > > > Feb 15 08:44:49.876547 myhost kernel: sr 1:0:0:0: Attached scsi CD-ROM sr0
> > > > Feb 15 08:44:49.880540 myhost kernel: ------------[ cut here ]------------
>
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: bcache kernel panic
2023-02-16 22:31 ` Eric Wheeler
@ 2023-02-18 15:26 ` Stefan Boehringer
0 siblings, 0 replies; 7+ messages in thread
From: Stefan Boehringer @ 2023-02-18 15:26 UTC (permalink / raw)
To: Eric Wheeler, Matthias Ferdinand; +Cc: linux-bcache
Next time the problem occurs, I will try to log into the machine via ssh
as my impression is that most thing are still up (for one thing the
kernel log was written). I will then discuss the green screen with the
Tumbleweed side to see whether this is a modification on their part and
then report back.
Thank you all for commenting,
Stefan
On 2/16/23 23:31, Eric Wheeler wrote:
> On Thu, 16 Feb 2023, Matthias Ferdinand wrote:
>> On Thu, Feb 16, 2023 at 07:06:05PM +0100, Stefan Boehringer wrote:
>>> Dear Mathias,
>>>
>>> thank you for the update. I look forward to the update.
> FYI: This is the bcache-specific update:
>
> https://lore.kernel.org/lkml/20230106060229.never.047-kees@kernel.org/
>
> All it does is ignore the warning! You will not get the warning in your
> kernel logs; whatever issue you are having, this most certainly will
> _not_ fix it.
>
> From the dmesg log you pasted, it looks like you are using a kernel
> provided by tumbleweed, so you might try building your own from the
> vanilla tree.
>
> -Eric
>
>>> For me, it is a hard crash as the screen goes green and I cannot input
>>> anything anymore. I still hear hard-drive activity, so the system
>>> seems to be still up (maybe usable via ssh, but haven't tried). I have
>>> to perform a hard reset.
>>>
>>> I have not experienced any data loss.
>> Major nuisance on desktop or notebook machines indeed.
>>
>> I am not a tumbleweed user, but for the time being you might want to go
>> back to a slightly older kernel (e.g. on Arch Linux there is the
>> fast-moving "linux" package and a separate "linux-lts" package).
>>
>> I haven't seen machines locking up or lose keyboard/screen from a kernel
>> WARN() (but also don't see many WARNs to begin with...). Is this
>> perhaps a hardening feature in SuSE/tumbleweed? Some people want WARN()s
>> to be handled harshly, I found this discussion on lwn:
>> https://lwn.net/Articles/876209/
>> If so, you could tune it to be less strict until bcache gets patched in
>> the mainstream kernel.
>
>
>> Matthias
>>
>>> Thank you, best,
>>>
>>> Stefan
>>>
>>> On 2/16/23 19:00, Matthias Ferdinand wrote:
>>>> Hi,
>>>>
>>>> there has been a thread referencing "field-spanning writes" recently:
>>>>
>>>> https://www.spinics.net/lists/linux-bcache/msg11631.html
>>>>
>>>> I understood this to be some kind of false positive, to be fixed in some
>>>> later relase of 6.1.x kernels.
>>>>
>>>> Does the system become unusable or is this green-screen just a warning?
>>>>
>>>> Regards
>>>> Matthias Ferdinand
>>>>
>>>>
>>>> On Thu, Feb 16, 2023 at 05:58:15PM +0100, Stefan Boehringer wrote:
>>>>> Dear bache maintainer,
>>>>>
>>>>> I would like to report a kernel panic for bcache that is unfortunately not
>>>>> reproducible. I get this error roughly once a week, resulting in a green
>>>>> screen on my system. Please let me know, if I can provide further
>>>>> information to fix the bug. Below dmesg output copy-pasted as instructed.
>>>>>
>>>>> Thank you, best,
>>>>>
>>>>> Stefan
>>>>>
>>>>>
>>>>> Feb 15 08:44:49.840548 myhost kernel: ------------[ cut here ]------------
>>>>>
>>>>> Feb 15 08:44:49.840614 myhost kernel: memcpy: detected field-spanning write
>>>>> (size 264) of single field "&i
>>>>> ->j" at drivers/md/bcache/journal.c:152 (size 240)
>>>>> Feb 15 08:44:49.840633 myhost kernel: WARNING: CPU: 7 PID: 755 at
>>>>> drivers/md/bcache/journal.c:152 journal_
>>>>> read_bucket+0x3df/0x490 [bcache]
>>>>> Feb 15 08:44:49.840649 myhost kernel: Modules linked in: snd_hwdep(+) kvm(+)
>>>>> snd_pcm videobuf2_vmalloc(+)
>>>>> videobuf2_memops snd_timer videobuf2_v4l2 sr_mod(+) snd real
>>>>> tek cdrom pcspkr efi_pstore k10temp videobuf2_common i2c_piix4
>>>>> hid_plantronics(+) irqbypass pcc_cpufreq(-) mdio_devres joydev soundcore
>>>>> cfg80211 libphy bcache tiny_power_button acpi_cpufreq button fuse configfs
>>>>> dmi_sysfs ip_tables x_tables btusb btrtl btbcm btintel btmtk bluetooth
>>>>> hid_generic uas ecdh_generic usbhid usb_storage rfkill amdgpu
>>>>> crct10dif_pclmul crc32_pclmul polyval_clmulni polyval_generic gf128mul
>>>>> drm_ttm_helper ttm ghash_clmulni_intel iommu_v2 xhci_pci gpu_sched
>>>>> sha512_ssse3 xhci_pci_renesas xhci_hcd drm_buddy aesni_intel
>>>>> drm_display_helper nvme crypto_simd usbcore cryptd cec ccp nvme_core
>>>>> sp5100_tco rc_core amd_sfh video wmi btrfs blake2b_generic libcrc32c
>>>>> crc32c_intel xor raid6_pq v4l2loopback(O) videodev mc sg dm_multipath dm_mod
>>>>> scsi_dh_rdac scsi_dh_emc scsi_dh_alua msr efivarfs
>>>>> Feb 15 08:44:49.840786 myhost kernel: CPU: 7 PID: 755 Comm: kworker/7:2
>>>>> Tainted: G O 6.1.10-1-default #1 openSUSE Tumbleweed
>>>>> 22576c8b47239465c1855ce27337697dac36c24c
>>>>> Feb 15 08:44:49.840809 myhost kernel: Hardware name: GIGABYTE
>>>>> GB-BRR7H-4800/GB-BRR7H-4800, BIOS F5 05/05/2021
>>>>> Feb 15 08:44:49.840827 myhost kernel: Workqueue: events
>>>>> register_cache_worker [bcache]
>>>>> Feb 15 08:44:49.840844 myhost kernel: RIP:
>>>>> 0010:journal_read_bucket+0x3df/0x490 [bcache]
>>>>> Feb 15 08:44:49.840860 myhost kernel: Code: 00 00 00 48 89 ee 48 c7 c2 70 c4
>>>>> cb c0 48 c7 c7 a8 c4 cb c0 4c 89 5c 24 48 48 89 44 24 20 c6 05 21 c8 02 00
>>>>> 01 e8 3e f5 65 f1 <0f> 0b 4c 8b 5c 24 48 48 8b 44 24 20 e9 6b ff ff ff 44 8b
>>>>> 74 24 54
>>>>> Feb 15 08:44:49.840884 myhost kernel: RSP: 0018:ffffb6fe01893c98 EFLAGS:
>>>>> 00010282
>>>>> Feb 15 08:44:49.840900 myhost kernel: RAX: 0000000000000000 RBX:
>>>>> ffff95ebc2a3c000 RCX: 0000000000000027
>>>>> Feb 15 08:44:49.840915 myhost kernel: RDX: ffff95f2af7e24e8 RSI:
>>>>> 0000000000000001 RDI: ffff95f2af7e24e0
>>>>> Feb 15 08:44:49.840932 myhost kernel: RBP: 0000000000000108 R08:
>>>>> 0000000000000000 R09: ffffb6fe01893b40
>>>>> Feb 15 08:44:49.840948 myhost kernel: R10: 0000000000000003 R11:
>>>>> ffff95f2cf2ff228 R12: dead000000000122
>>>>> Feb 15 08:44:49.840965 myhost kernel: R13: dead000000000100 R14:
>>>>> ffff95ebc46a8400 R15: ffffb6fe01893e08
>>>>> Feb 15 08:44:49.840981 myhost kernel: FS: 0000000000000000(0000)
>>>>> GS:ffff95f2af7c0000(0000) knlGS:0000000000000000
>>>>> Feb 15 08:44:49.840998 myhost kernel: CS: 0010 DS: 0000 ES: 0000 CR0:
>>>>> 0000000080050033
>>>>> Feb 15 08:44:49.841014 myhost kernel: CR2: 00007f166249afe0 CR3:
>>>>> 000000010323e000 CR4: 0000000000350ee0
>>>>> Feb 15 08:44:49.841030 myhost kernel: Call Trace:
>>>>> Feb 15 08:44:49.841047 myhost kernel: <TASK>
>>>>> Feb 15 08:44:49.841067 myhost kernel: ? bch_btree_exit+0x20/0x20 [bcache
>>>>> f7676faef63111511583961fa9b18ec07deb88c4]
>>>>> Feb 15 08:44:49.841090 myhost kernel: bch_journal_read+0x79/0x320 [bcache
>>>>> f7676faef63111511583961fa9b18ec07deb88c4]
>>>>> Feb 15 08:44:49.841108 myhost kernel: register_cache_worker+0x99f/0x11c0
>>>>> [bcache f7676faef63111511583961fa9b18ec07deb88c4]
>>>>> Feb 15 08:44:49.841125 myhost kernel: ?
>>>>> finish_task_switch.isra.0+0x90/0x2d0
>>>>> Feb 15 08:44:49.841141 myhost kernel: process_one_work+0x20c/0x3d0
>>>>> Feb 15 08:44:49.841157 myhost kernel: worker_thread+0x4a/0x3b0
>>>>> Feb 15 08:44:49.841173 myhost kernel: ? process_one_work+0x3d0/0x3d0
>>>>> Feb 15 08:44:49.841188 myhost kernel: kthread+0xd7/0x100
>>>>> Feb 15 08:44:49.841203 myhost kernel: ? kthread_complete_and_exit+0x20/0x20
>>>>> Feb 15 08:44:49.841219 myhost kernel: ret_from_fork+0x1f/0x30
>>>>> Feb 15 08:44:49.841236 myhost kernel: </TASK>
>>>>> Feb 15 08:44:49.841251 myhost kernel: ---[ end trace 0000000000000000 ]---
>>>>> Feb 15 08:44:49.848553 myhost kernel: sr 1:0:0:0: [sr0] scsi3-mmc drive:
>>>>> 24x/24x writer dvd-ram cd/rw xa/form2 cdda tray
>>>>> Feb 15 08:44:49.848843 myhost kernel: cdrom: Uniform CD-ROM driver Revision:
>>>>> 3.20
>>>>> Feb 15 08:44:49.872544 myhost kernel: plantronics 0003:047F:1200.0004:
>>>>> input,hiddev96,hidraw3: USB HID v1.11 Device [Plantronics Plantronics
>>>>> Calisto 7200] on usb-0000:04:00.0-2.4/input3
>>>>> Feb 15 08:44:49.876547 myhost kernel: sr 1:0:0:0: Attached scsi CD-ROM sr0
>>>>> Feb 15 08:44:49.880540 myhost kernel: ------------[ cut here ]------------
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2023-02-18 15:27 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2023-02-16 16:58 bcache kernel panic Stefan Boehringer
2023-02-16 18:00 ` Matthias Ferdinand
2023-02-16 18:06 ` Stefan Boehringer
2023-02-16 20:44 ` Eric Wheeler
2023-02-16 21:11 ` Matthias Ferdinand
2023-02-16 22:31 ` Eric Wheeler
2023-02-18 15:26 ` Stefan Boehringer
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