apport information
** Tags added: apport-collected focal
** Description changed:
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 "0068". 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: 0068
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 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:ab8dc042fad0
EFLAGS: 00010202
Feb 1 01:40:38 server kernel: [172867.494141] RAX: 0004 RBX:
8f01001251d8 RCX: 8f0100125040
Feb 1 01:40:38 server kernel: [172867.494163] RDX: 00ff RSI:
RDI: 8f01001251d0
Feb 1 01:40:38 server kernel: [172867.494185] RBP: ab8dc042fb28 R08:
R09:
Feb 1 01:40:38 server kernel: [172867.494206] R10: 8f00c2ea6280 R11:
0001 R12: 8f01001253c0
Feb 1 01:40:38 server kernel: [172867.494228] R13: 8f01001251d0 R14:
R15: 8f01001251b0
Feb 1 01:40:38 server kernel: [172867.494250] FS: ()
GS:8f03cfa8() knlGS:
Feb 1 01:40:38 server kernel: [172867.494274] CS: 0010 DS: ES:
CR0: 80050033
Feb 1 01:40:38 server kernel: [172867.494293] CR2: 0068 CR3:
000202810001 CR4: 000606e0
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: 0068
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