apport information ** Attachment added: "acpidump.txt" https://bugs.launchpad.net/bugs/1959685/+attachment/5560157/+files/acpidump.txt
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1959685 Title: Kernel BUG with btrfs on linux 5.13 Status in linux package in Ubuntu: Incomplete Bug description: I am hitting the below kernel oops every 2-5 days on my home server box. RIP is always "0010:btrfs_evict_inode+0xa1/0x480 [btrfs]" and address is always "0000000000000068". I'm using btrfs in raid1 configuration for general storage. === Feb 1 01:40:38 server kernel: [172867.493851] BUG: kernel NULL pointer dereference, address: 0000000000000068 Feb 1 01:40:38 server kernel: [172867.493885] #PF: supervisor write access in kernel mode Feb 1 01:40:38 server kernel: [172867.493903] #PF: error_code(0x0002) - not-present page Feb 1 01:40:38 server kernel: [172867.493920] PGD 0 P4D 0 Feb 1 01:40:38 server kernel: [172867.493931] Oops: 0002 [#1] SMP PTI Feb 1 01:40:38 server kernel: [172867.493946] CPU: 2 PID: 104 Comm: kswapd0 Not tainted 5.13.0-27-generic #29~20.04.1-Ubuntu Feb 1 01:40:38 server kernel: [172867.493972] Hardware name: Gigabyte Technology Co., Ltd. H67MA-D2H-B3/H67MA-D2H-B3, BIOS F1 02/11/2011 Feb 1 01:40:38 server kernel: [172867.493999] RIP: 0010:btrfs_evict_inode+0xa1/0x480 [btrfs] Feb 1 01:40:38 server kernel: [172867.494070] Code: fd ff ff e8 d1 b1 9f c8 65 48 8b 04 25 c0 7b 01 00 48 89 45 b8 49 8b 84 24 f0 fd ff ff 48 85 c0 74 55 4d 8b b4 24 f8 fd ff ff <f0> 41 80 66 68 fe f0 41 80 66 68 f7 4c 89 f6 4c 89 ff e8 98 00 01 Feb 1 01:40:38 server kernel: [172867.494123] RSP: 0018:ffffab8dc042fad0 EFLAGS: 00010202 Feb 1 01:40:38 server kernel: [172867.494141] RAX: 0000000000000004 RBX: ffff8f01001251d8 RCX: ffff8f0100125040 Feb 1 01:40:38 server kernel: [172867.494163] RDX: 00000000000000ff RSI: 0000000000000000 RDI: ffff8f01001251d0 Feb 1 01:40:38 server kernel: [172867.494185] RBP: ffffab8dc042fb28 R08: 0000000000000000 R09: 0000000000000000 Feb 1 01:40:38 server kernel: [172867.494206] R10: ffff8f00c2ea6280 R11: 0000000000000001 R12: ffff8f01001253c0 Feb 1 01:40:38 server kernel: [172867.494228] R13: ffff8f01001251d0 R14: 0000000000000000 R15: ffff8f01001251b0 Feb 1 01:40:38 server kernel: [172867.494250] FS: 0000000000000000(0000) GS:ffff8f03cfa80000(0000) knlGS:0000000000000000 Feb 1 01:40:38 server kernel: [172867.494274] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Feb 1 01:40:38 server kernel: [172867.494293] CR2: 0000000000000068 CR3: 0000000202810001 CR4: 00000000000606e0 Feb 1 01:40:38 server kernel: [172867.494315] Call Trace: Feb 1 01:40:38 server kernel: [172867.494328] evict+0xd2/0x180 Feb 1 01:40:38 server kernel: [172867.494342] dispose_list+0x39/0x50 Feb 1 01:40:38 server kernel: [172867.494356] prune_icache_sb+0x5c/0x80 Feb 1 01:40:38 server kernel: [172867.494370] super_cache_scan+0x132/0x1b0 Feb 1 01:40:38 server kernel: [172867.494386] do_shrink_slab+0x144/0x2c0 Feb 1 01:40:38 server kernel: [172867.494402] shrink_slab+0x215/0x2b0 Feb 1 01:40:38 server kernel: [172867.494416] shrink_node+0x2dd/0x6f0 Feb 1 01:40:38 server kernel: [172867.494430] balance_pgdat+0x322/0x5f0 Feb 1 01:40:38 server kernel: [172867.494445] kswapd+0x1f8/0x380 Feb 1 01:40:38 server kernel: [172867.494458] ? wait_woken+0x80/0x80 Feb 1 01:40:38 server kernel: [172867.494473] ? balance_pgdat+0x5f0/0x5f0 Feb 1 01:40:38 server kernel: [172867.494487] kthread+0x12b/0x150 Feb 1 01:40:38 server kernel: [172867.494501] ? set_kthread_struct+0x40/0x40 Feb 1 01:40:38 server kernel: [172867.494516] ret_from_fork+0x22/0x30 Feb 1 01:40:38 server kernel: [172867.494532] Modules linked in: xt_conntrack xt_MASQUERADE nf_conntrack_netlink nfnetlink xfrm_user xfrm_algo xt_addrtype iptable_filter iptable_nat nf_nat nf_conntrack nf_defra g_ipv6 nf_defrag_ipv4 bpfilter br_netfilter bridge stp llc aufs overlay snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio snd_hda_intel snd_intel_dspcfg snd_intel_sdw_acpi snd_hda_code c snd_hda_core snd_hwdep snd_pcm intel_rapl_msr snd_seq_midi snd_seq_midi_event mei_hdcp intel_rapl_common x86_pkg_temp_thermal intel_powerclamp coretemp snd_rawmidi kvm_intel kvm snd_seq crct10dif_pclmul ghash_ clmulni_intel snd_seq_device cryptd i915 rapl snd_timer intel_cstate serio_raw joydev drm_kms_helper input_leds cec snd rc_core i2c_algo_bit fb_sys_fops syscopyarea sysfillrect sysimgblt video soundcore mei_me m ei mac_hid sch_fq_codel msr parport_pc ppdev drm lp parport ip_tables x_tables autofs4 btrfs blake2b_generic xor zstd_compress raid6_pq libcrc32c uas usb_storage hid_generic usbhid hid Feb 1 01:40:38 server kernel: [172867.494581] gpio_ich crc32_pclmul lpc_ich r8169 i2c_i801 ahci i2c_smbus xhci_pci realtek libahci xhci_pci_renesas Feb 1 01:40:38 server kernel: [172867.497076] CR2: 0000000000000068 Feb 1 01:40:38 server kernel: [172867.497876] ---[ end trace 4ab76c62441acb52 ]--- Feb 1 01:40:38 server kernel: [172867.498695] RIP: 0010:btrfs_evict_inode+0xa1/0x480 [btrfs] Feb 1 01:40:38 server kernel: [172867.499556] Code: fd ff ff e8 d1 b1 9f c8 65 48 8b 04 25 c0 7b 01 00 48 89 45 b8 49 8b 84 24 f0 fd ff ff 48 85 c0 74 55 4d 8b b4 24 f8 fd ff ff <f0> 41 80 66 68 fe f0 41 80 66 68 f7 4c 89 f6 4c 89 ff e8 98 00 01 Feb 1 01:40:38 server kernel: [172867.501356] RSP: 0018:ffffab8dc042fad0 EFLAGS: 00010202 Feb 1 01:40:38 server kernel: [172867.502297] RAX: 0000000000000004 RBX: ffff8f01001251d8 RCX: ffff8f0100125040 Feb 1 01:40:38 server kernel: [172867.503243] RDX: 00000000000000ff RSI: 0000000000000000 RDI: ffff8f01001251d0 Feb 1 01:40:38 server kernel: [172867.504204] RBP: ffffab8dc042fb28 R08: 0000000000000000 R09: 0000000000000000 Feb 1 01:40:38 server kernel: [172867.505177] R10: ffff8f00c2ea6280 R11: 0000000000000001 R12: ffff8f01001253c0 Feb 1 01:40:38 server kernel: [172867.506172] R13: ffff8f01001251d0 R14: 0000000000000000 R15: ffff8f01001251b0 Feb 1 01:40:38 server kernel: [172867.507165] FS: 0000000000000000(0000) GS:ffff8f03cfa80000(0000) knlGS:0000000000000000 Feb 1 01:40:38 server kernel: [172867.508183] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Feb 1 01:40:38 server kernel: [172867.509210] CR2: 0000000000000068 CR3: 0000000202810001 CR4: 00000000000606e0 === More instances of the same report is in the attached file. I /think/ I didn't see these crashes while I was running 5.11 kernels. Will switch back to linux-image-5.11.0-46-generic and see if the crashes go away. Attached is the output of $ cd /var/log $ (cat kern.log kern.log.1; zcat kern.log.{2,3,4}.gz) | grep -B10 -A50 "BUG:" > ~/kern.log --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu27.21 Architecture: amd64 AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D3', '/dev/snd/hwC0D2', '/dev/snd/pcmC0D3p', '/dev/snd/pcmC0D2c', '/dev/snd/pcmC0D1p', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CasperMD5CheckResult: skip CurrentDesktop: MATE DistroRelease: Ubuntu 20.04 InstallationDate: Installed on 2020-06-11 (608 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423) IwConfig: lo no wireless extensions. docker0 no wireless extensions. enp3s0 no wireless extensions. MachineType: Gigabyte Technology Co., Ltd. H67MA-D2H-B3 Package: linux (not installed) ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-99-generic root=UUID=1a61d5dd-775e-43cd-9cd5-0056498f56fb ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 5.4.0-99.112-generic 5.4.162 RelatedPackageVersions: linux-restricted-modules-5.4.0-99-generic N/A linux-backports-modules-5.4.0-99-generic N/A linux-firmware 1.187.25 RfKill: Tags: focal Uname: Linux 5.4.0-99-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 02/11/2011 dmi.bios.vendor: Award Software International, Inc. dmi.bios.version: F1 dmi.board.name: H67MA-D2H-B3 dmi.board.vendor: Gigabyte Technology Co., Ltd. dmi.chassis.type: 3 dmi.chassis.vendor: Gigabyte Technology Co., Ltd. dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF1:bd02/11/2011:svnGigabyteTechnologyCo.,Ltd.:pnH67MA-D2H-B3:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnH67MA-D2H-B3:rvr:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr: dmi.product.name: H67MA-D2H-B3 dmi.sys.vendor: Gigabyte Technology Co., Ltd. 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