Comment # 3
on bug 1206681
from John Shand
[ 603.623028] ------------[ cut here ]------------
[ 603.623032] WARNING: CPU: 1 PID: 4119 at fs/btrfs/qgroup.c:2756
btrfs_qgroup_account_extents+0x1ae/0x260 [btrfs]
[ 603.623153] Modules linked in: rfcomm snd_seq_dummy snd_hrtimer snd_seq
snd_seq_device xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT xt_tcpudp
nf_nat_tftp nft_objref nf_conntrack_tftp bridge stp llc ccm nft_fib_inet
nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6
nft_reject nft_ct nft_chain_nat nf_tables ebtable_nat ebtable_broute
ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat
nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 iptable_mangle iptable_raw
iptable_security af_packet iscsi_ibft iscsi_boot_sysfs nfnetlink ebtable_filter
ebtables ip6table_filter ip6_tables iptable_filter bpfilter qrtr cmac
algif_hash algif_skcipher af_alg bnep uvcvideo videobuf2_vmalloc
videobuf2_memops videobuf2_v4l2 videobuf2_common videodev mc btusb btrtl btbcm
btintel btmtk bluetooth ecdh_generic ath10k_pci ath10k_core edac_mce_amd ath
kvm_amd ccp mac80211 r8169 libarc4 cfg80211 kvm realtek pcspkr fam15h_power
mdio_devres
[ 603.623237] snd_ctl_led snd_hda_codec_realtek snd_hda_codec_generic
ledtrig_audio snd_hda_codec_hdmi snd_hda_intel snd_intel_dspcfg
snd_intel_sdw_acpi snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_timer snd
soundcore libphy k10temp irqbypass wmi_bmof acer_wmi sparse_keymap rfkill
i2c_piix4 thermal tiny_power_button acer_wireless joydev button ac acpi_cpufreq
configfs fuse dmi_sysfs ip_tables x_tables hid_logitech_hidpp hid_logitech_dj
usbhid crct10dif_pclmul crc32_pclmul polyval_clmulni polyval_generic gf128mul
amdgpu ghash_clmulni_intel sha512_ssse3 rtsx_pci_sdmmc ehci_pci iommu_v2
xhci_pci xhci_pci_renesas gpu_sched ehci_hcd xhci_hcd mmc_core hid_multitouch
hid_generic drm_buddy drm_ttm_helper ttm aesni_intel drm_display_helper
crypto_simd cryptd usbcore wdat_wdt sp5100_tco rtsx_pci cec rc_core battery
video i2c_hid_acpi wmi i2c_hid serio_raw btrfs blake2b_generic libcrc32c
crc32c_intel xor raid6_pq sg dm_multipath dm_mod scsi_dh_rdac scsi_dh_emc
scsi_dh_alua msr
[ 603.623355] CPU: 1 PID: 4119 Comm: snapperd Kdump: loaded Tainted: G
W 6.1.0-1-default #1 openSUSE Tumbleweed
48626d833e5fb29b0a7b7fa9a1fead569fdb9df7
[ 603.623361] Hardware name: Acer Aspire A315-21G/Squirtle_SR, BIOS V1.12
06/19/2018
[ 603.623362] RIP: 0010:btrfs_qgroup_account_extents+0x1ae/0x260 [btrfs]
[ 603.623472] Code: 85 c0 74 0f 48 8b 78 08 4c 89 fa 4c 89 ee e8 d9 54 f5 ff
65 ff 0d d2 9d b7 3f 0f 85 b8 fe ff ff 0f 1f 44 00 00 e9 ae fe ff ff <0f> 0b 49
8b 57 18 45 31 c9 4d 8d 47 38 31 c9 4c 89 ee e8 1b 71 ff
[ 603.623475] RSP: 0018:ffffb4af421efc48 EFLAGS: 00010246
[ 603.623478] RAX: ffff929ce1006880 RBX: 0000000000000000 RCX:
0000000080400034
[ 603.623480] RDX: ffff929ce1006880 RSI: ffffe50345840180 RDI:
0000000000000000
[ 603.623482] RBP: ffff929bbfbda160 R08: 0000000000000000 R09:
0000000080400034
[ 603.623484] R10: 0000000000000000 R11: ffff929c92df4800 R12:
0000000000000014
[ 603.623486] R13: ffff929c87328000 R14: ffff929c81f0fdd0 R15:
ffff929ce1006880
[ 603.623488] FS: 00007f3c823776c0(0000) GS:ffff929d8ec80000(0000)
knlGS:0000000000000000
[ 603.623491] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 603.623493] CR2: 0000562a26d9a8c8 CR3: 000000015549e000 CR4:
00000000001506e0
[ 603.623496] Call Trace:
[ 603.623499] <TASK>
[ 603.623504] btrfs_commit_transaction+0x30c/0xb40 [btrfs
6ca8f3cffae9e47a2e6edd8bcc00db99c48e0bd7]
[ 603.623601] ? start_transaction+0xc3/0x5b0 [btrfs
6ca8f3cffae9e47a2e6edd8bcc00db99c48e0bd7]
[ 603.623683] btrfs_qgroup_rescan+0x42/0xc0 [btrfs
6ca8f3cffae9e47a2e6edd8bcc00db99c48e0bd7]
[ 603.623781] btrfs_ioctl+0x1ab9/0x25c0 [btrfs
6ca8f3cffae9e47a2e6edd8bcc00db99c48e0bd7]
[ 603.623870] ? __seccomp_filter+0x319/0x4d0
[ 603.623877] __x64_sys_ioctl+0x90/0xd0
[ 603.623882] do_syscall_64+0x5b/0x80
[ 603.623887] ? __rseq_handle_notify_resume+0xa9/0x4a0
[ 603.623891] ? call_rcu+0xd5/0xa10
[ 603.623897] ? exit_to_user_mode_prepare+0x166/0x1f0
[ 603.623901] ? syscall_exit_to_user_mode+0x17/0x40
[ 603.623905] ? do_syscall_64+0x67/0x80
[ 603.623907] ? syscall_exit_to_user_mode+0x17/0x40
[ 603.623911] ? do_syscall_64+0x67/0x80
[ 603.623913] ? do_syscall_64+0x67/0x80
[ 603.623915] ? do_syscall_64+0x67/0x80
[ 603.623918] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 603.623922] RIP: 0033:0x7f3c833099bf
[ 603.623925] Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00
00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d
00 f0 ff ff 77 18 48 8b 44 24 18 64 48 2b 04 25 28 00 00
[ 603.623927] RSP: 002b:00007f3c82376760 EFLAGS: 00000246 ORIG_RAX:
0000000000000010
[ 603.623932] RAX: ffffffffffffffda RBX: 0000000000000007 RCX:
00007f3c833099bf
[ 603.623934] RDX: 00007f3c823767c0 RSI: 000000004040942c RDI:
0000000000000007
[ 603.623935] RBP: 00007f3c823767c0 R08: 0000000000000000 R09:
0000000000000000
[ 603.623937] R10: 0000000000001000 R11: 0000000000000246 R12:
00007f3c823768e0
[ 603.623938] R13: 00007f3c83818fd0 R14: 00007f3c82376a30 R15:
00007f3c82376a60
[ 603.623943] </TASK>
[ 603.623944] ---[ end trace 0000000000000000 ]---