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@xxxxxxxxxx/ 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 ]------------ >
