From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E267DC61DA4 for ; Thu, 16 Feb 2023 18:02:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230237AbjBPSCL (ORCPT ); Thu, 16 Feb 2023 13:02:11 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42430 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230230AbjBPSCJ (ORCPT ); Thu, 16 Feb 2023 13:02:09 -0500 X-Greylist: delayed 109 seconds by postgrey-1.37 at lindbergh.monkeyblade.net; Thu, 16 Feb 2023 10:02:06 PST Received: from smtp.mfedv.net (smtp.mfedv.net [IPv6:2a04:6c0:2::19]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 686D54C6FA for ; Thu, 16 Feb 2023 10:02:05 -0800 (PST) Received: from suse92host.mfedv.net (suse92host.mfedv.net [IPv6:2a04:6c0:2:3:0:0:0:ffff]) by smtp.mfedv.net (8.15.2/8.15.2/Debian-22ubuntu3) with ESMTP id 31GI0AYh008044; Thu, 16 Feb 2023 19:00:11 +0100 Received: from xoff (klappe2.mfedv.net [192.168.71.72]) by suse92host.mfedv.net (Postfix) with ESMTP id 098F9C809B; Thu, 16 Feb 2023 19:00:10 +0100 (CET) (envelope-from bcache@mfedv.net) Date: Thu, 16 Feb 2023 19:00:09 +0100 From: Matthias Ferdinand To: Stefan Boehringer Cc: linux-bcache@vger.kernel.org Subject: Re: bcache kernel panic Message-ID: References: <54d572de-2d65-2a35-ae33-3a5a0cfe3db6@s-boehringer.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <54d572de-2d65-2a35-ae33-3a5a0cfe3db6@s-boehringer.org> Precedence: bulk List-ID: X-Mailing-List: linux-bcache@vger.kernel.org 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:  > 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:  > 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 ]------------