Btrfs/kernel issue?

Btrfs is enabled in CoreELEC kernel (for quite some time), after installing userland tools via opkg all works fine on the first mount.
Once the fs is unmounted and system reboot, successive mount works, but very soon after there’s issue as below. If am not mistaken it might be due to some kernel level required fixes available in more modern kernels.

Therefore, a suggestion would be to
a) preferred, bump the kernel to more recent version, which includes the fix?
b) modify kernel to disable btrfs.

One or the other needs to be done, as anyone who would use btrfs, as is enabled in kernel has very high chances to run into the issues. I’ve run into similar on previous CoreELEC versions 9.x and gave it a try on 19.3.
Environment context:

  • freshly formatted btrfs,
  • mounted with compress=zlib,
  • ~40MB of data in subvolume,
  • btrfs sitting on cryptsetup volume (irrelevant, but providing for context),
  • kernel 4.9.113,
  • btrfs-tools v5.11.

Kernel message, shortly after mounting filesystem and running find ./mountpoint/ on it.


Nov 18 08:49:05 hostname kernel: xor: measuring software checksum speed
Nov 18 08:49:05 hostname kernel:    8regs     :  3606.000 MB/sec
Nov 18 08:49:05 hostname kernel:    8regs_prefetch:  5083.000 MB/sec
Nov 18 08:49:05 hostname kernel:    32regs    :  7285.000 MB/sec
Nov 18 08:49:05 hostname kernel:    32regs_prefetch:  6216.000 MB/sec
Nov 18 08:49:05 hostname kernel: xor: using function: 32regs (7285.000 MB/sec)
Nov 18 08:49:05 hostname kernel: raid6: int64x1  gen()   870 MB/s
Nov 18 08:49:05 hostname kernel: raid6: int64x1  xor()   835 MB/s
Nov 18 08:49:05 hostname kernel: raid6: int64x2  gen()  1273 MB/s
Nov 18 08:49:05 hostname kernel: raid6: int64x2  xor()  1077 MB/s
Nov 18 08:49:05 hostname kernel: raid6: int64x4  gen()  1549 MB/s
Nov 18 08:49:05 hostname kernel: raid6: int64x4  xor()  1214 MB/s
Nov 18 08:49:05 hostname kernel: raid6: int64x8  gen()  2260 MB/s
Nov 18 08:49:06 hostname kernel: raid6: int64x8  xor()  1323 MB/s
Nov 18 08:49:06 hostname kernel: raid6: neonx1   gen()  2221 MB/s
Nov 18 08:49:06 hostname kernel: raid6: neonx1   xor()  1341 MB/s
Nov 18 08:49:06 hostname kernel: raid6: neonx2   gen()  2674 MB/s
Nov 18 08:49:06 hostname kernel: raid6: neonx2   xor()  2049 MB/s
Nov 18 08:49:06 hostname kernel: raid6: neonx4   gen()  2952 MB/s
Nov 18 08:49:06 hostname kernel: raid6: neonx4   xor()  2511 MB/s
Nov 18 08:49:06 hostname kernel: raid6: neonx8   gen()  3613 MB/s
Nov 18 08:49:06 hostname kernel: raid6: neonx8   xor()  2638 MB/s
Nov 18 08:49:06 hostname kernel: raid6: using algorithm neonx8 gen() 3613 MB/s
Nov 18 08:49:06 hostname kernel: raid6: .... xor() 2638 MB/s, rmw enabled
Nov 18 08:49:06 hostname kernel: raid6: using intx1 recovery algorithm
Nov 18 08:49:06 hostname kernel: Btrfs loaded, crc32c=crc32c-generic
Nov 18 08:49:06 hostname kernel: BTRFS: device label ToshibaCanvioGaming devid 1 transid 52 /dev/mapper/storage
Nov 18 08:49:06 hostname kernel: BTRFS error (device dm-0): open_ctree failed
Nov 18 08:49:14 hostname kernel: BTRFS info (device dm-0): use zlib compression
Nov 18 08:49:14 hostname kernel: BTRFS info (device dm-0): disk space caching is enabled
Nov 18 08:49:14 hostname kernel: BTRFS info (device dm-0): has skinny extents

Nov 18 08:49:46 hostname kernel: Unable to handle kernel NULL pointer dereference at virtual address 00000044
Nov 18 08:49:46 hostname kernel: pgd = ffffff800ae37000
Nov 18 08:49:46 hostname kernel: [00000044] *pgd=00000000e17fe003, *pud=00000000e17fe003, *pmd=0000000000000000
Nov 18 08:49:46 hostname kernel: Internal error: Oops: 96000007 [#1] PREEMPT SMP
Nov 18 08:49:46 hostname kernel: Modules linked in: btrfs raid6_pq xor dm_crypt dm_mod macvlan ipt_MASQUERADE nf_nat_masquerade_ipv4 xt_nat xt_tcpudp ir_rc6_decoder ir_nec_decoder ir_lirc_codec lirc_dev meson_ir rc_core xt_conntrack nf_conntrack_netlink nfnetlink xt_addrtype iptable_filter iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack ip_tables x_tables br_netfilter bridge stp llc 8021q overlay nfsd mali_kbase(O) exportfs nfs_acl wireguard ip6_udp_tunnel udp_tunnel wifi_dummy(O) amvdec_vp9(O) amvdec_vc1(O) amvdec_real(O) amvdec_ports(O) v4l2_common videobuf2_dma_contig videobuf2_memops v4l2_mem2mem videobuf2_v4l2 videobuf2_core amvdec_mpeg4(O) amvdec_mpeg12(O) amvdec_mmpeg4(O) amvdec_mmpeg12(O) amvdec_mmjpeg(O) amvdec_mjpeg(O) amvdec_mh264(O) amvdec_h265(O) amvdec_h264mvc(O) amvdec_h264(O)
Nov 18 08:49:46 hostname kernel:  amvdec_mavs(O) amvdec_avs(O) amvdec_avs2(O) stream_input(O) decoder_common(O) firmware(O) media_clock(O) amlvideodri videobuf_res videobuf_core videodev media fuse fbcon bitblit softcursor font
Nov 18 08:49:46 hostname kernel: CPU: 0 PID: 16429 Comm: btrfs-cleaner Tainted: G           O    4.9.113 #1
Nov 18 08:49:46 hostname kernel: Hardware name: Hardkernel ODROID-N2 (DT)
Nov 18 08:49:46 hostname kernel: task: ffffffc0dc69d400 task.stack: ffffffc0966a8000
Nov 18 08:49:46 hostname kernel: PC is at __do_page_cache_readahead+0x4c/0x290
Nov 18 08:49:46 hostname kernel: LR is at ondemand_readahead.isra.0+0x130/0x254
Nov 18 08:49:46 hostname kernel: pc : [<ffffff80091d16dc>] lr : [<ffffff80091d1a50>] pstate: 80000145
Nov 18 08:49:46 hostname kernel: sp : ffffffc0966ab580
Nov 18 08:49:46 hostname kernel: x29: ffffffc0966ab580 x28: 0000000000000013 
Nov 18 08:49:46 hostname kernel: x27: ffffffc0966ab768 x26: ffffffc07d814000 
Nov 18 08:49:46 hostname kernel: x25: 0000000000000400 x24: 0000000000000000 
Nov 18 08:49:46 hostname kernel: x23: 0000000000000080 x22: 0000000000001300 
Nov 18 08:49:46 hostname kernel: x21: 0000000000000000 x20: ffffffc07ce98358 
Nov 18 08:49:46 hostname kernel: x19: 0000000000000041 x18: 0000000000000000 
Nov 18 08:49:46 hostname kernel: x17: 0000000000000000 x16: 0000000000000000 
Nov 18 08:49:46 hostname kernel: x15: 00000000efe4b99a x14: 0000000000000003 
Nov 18 08:49:46 hostname kernel: x13: 0000000000000003 x12: 000000000007ea4a 
Nov 18 08:49:46 hostname kernel: x11: 0000000000000004 x10: 0000000000000040 
Nov 18 08:49:46 hostname kernel: x9 : 0000000000000000 x8 : ffffffc099a2c180 
Nov 18 08:49:46 hostname kernel: x7 : 0000000000000000 x6 : 000000000000003f 
Nov 18 08:49:46 hostname kernel: x5 : 0000000000000080 x4 : 0000000000000041 
Nov 18 08:49:46 hostname kernel: x3 : 0000000000000080 x2 : 0000000000001300 
Nov 18 08:49:46 hostname kernel: x1 : ffffffc07ce981f0 x0 : 0000000002420048 
Nov 18 08:49:46 hostname kernel: 
                                  SP: 0xffffffc0966ab500:
Nov 18 08:49:46 hostname kernel: b500  00001300 00000000 00000080 00000000 00000000 00000000 00000400 00000000
Nov 18 08:49:46 hostname kernel: b520  7d814000 ffffffc0 966ab768 ffffffc0 00000013 00000000 966ab580 ffffffc0
Nov 18 08:49:46 hostname kernel: b540  091d1a50 ffffff80 966ab580 ffffffc0 091d16dc ffffff80 80000145 00000000
Nov 18 08:49:46 hostname kernel: b560  966ab5a0 ffffffc0 0245fd00 ffffff80 ffffffff ffffffff 00000019 00000000
Nov 18 08:49:46 hostname kernel: b580  966ab650 ffffffc0 091d1a50 ffffff80 00000000 00000000 00000041 00000000
Nov 18 08:49:46 hostname kernel: b5a0  99a2c140 ffffffc0 7ce98358 ffffffc0 00000000 00000000 00000000 00000000
Nov 18 08:49:46 hostname kernel: b5c0  00000400 00000000 7d814000 ffffffc0 00000000 00000000 00000000 00000000
Nov 18 08:49:46 hostname kernel: b5e0  00000001 00000000 00000000 00000000 966ab650 ffffffc0 024651f0 ffffff80
Nov 18 08:49:46 hostname kernel: 
                                  X1: 0xffffffc07ce98170:
Nov 18 08:49:46 hostname kernel: 8170  00000000 00000000 00000034 00000000 00000000 00000000 0000001b 00000000
Nov 18 08:49:46 hostname kernel: 8190  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Nov 18 08:49:46 hostname kernel: 81b0  7ce981b0 ffffffc0 7ce981b0 ffffffc0 00000000 00000000 00000000 00000000
Nov 18 08:49:46 hostname kernel: 81d0  7ce981d0 ffffffc0 7ce981d0 ffffffc0 00000000 00000000 00000000 00000000
Nov 18 08:49:46 hostname kernel: 81f0  00088180 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Nov 18 08:49:46 hostname kernel: 8210  02517680 ffffff80 9e072000 ffffffc0 7ce98358 ffffffc0 9e1c7140 ffffffc0
Nov 18 08:49:46 hostname kernel: 8230  00000100 00000000 00000001 00000000 00040000 00000000 00000000 00000000
Nov 18 08:49:46 hostname kernel: 8250  00000000 00000000 00000000 00000000 00000000 00000000 61958521 00000000
Nov 18 08:49:46 hostname kernel: 
                                  X8: 0xffffffc099a2c100:
Nov 18 08:49:46 hostname kernel: c100  00000000 00000000 00000000 00000000 00200000 00000000 00000024 00000000
Nov 18 08:49:46 hostname kernel: c120  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Nov 18 08:49:46 hostname kernel: c140  00000000 00000000 00000080 00000041 00000400 00000000 ffffffff ffffffff
Nov 18 08:49:46 hostname kernel: c160  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Nov 18 08:49:46 hostname kernel: c180  99a2cf40 ffffffc0 00000000 00000000 00000000 00000000 99a2c190 ffffffc0
Nov 18 08:49:46 hostname kernel: c1a0  99a2c1a0 ffffffc0 99a2c1a0 ffffffc0 62696873 69642d61 00006b73 00000000
Nov 18 08:49:46 hostname kernel: c1c0  99a2c900 ffffffc0 9e2bf880 ffffffc0 00000000 00000000 00000000 00000000
Nov 18 08:49:46 hostname kernel: c1e0  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Nov 18 08:49:46 hostname kernel: 
                                  X20: 0xffffffc07ce982d8:
Nov 18 08:49:46 hostname kernel: 82d8  dd239428 ffffffc0 7ce982e0 ffffffc0 7ce982e0 ffffffc0 7ce982f0 ffffffc0
Nov 18 08:49:46 hostname kernel: 82f8  7ce982f0 ffffffc0 7ce97760 ffffffc0 9e072608 ffffffc0 7ce98310 ffffffc0
Nov 18 08:49:46 hostname kernel: 8318  7ce98310 ffffffc0 00000000 00000000 00000000 00000000 0000002f 00000000
Nov 18 08:49:46 hostname kernel: 8338  00000002 00000000 00000000 00000000 02517f18 ffffff80 00000000 00000000
Nov 18 08:49:46 hostname kernel: 8358  7ce981f0 ffffffc0 02180020 00000000 00000000 00000000 00000000 00000000
Nov 18 08:49:46 hostname kernel: 8378  00000000 00000000 00000000 00000000 7ce98388 ffffffc0 7ce98388 ffffffc0
Nov 18 08:49:46 hostname kernel: 8398  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Nov 18 08:49:46 hostname kernel: 83b8  00000000 00000000 02517740 ffffff80 00000000 00000000 00000000 02420048
Nov 18 08:49:46 hostname kernel: 
                                  X26: 0xffffffc07d813f80:
Nov 18 08:49:46 hostname kernel: 3f80  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Nov 18 08:49:46 hostname kernel: 3fa0  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Nov 18 08:49:46 hostname kernel: 3fc0  00000000 00000000 00000005 00000000 00000000 00000000 00000000 00000000
Nov 18 08:49:46 hostname kernel: 3fe0  00000000 00000000 00000000 00000000 00000053 00020000 00046878 00000000
Nov 18 08:49:46 hostname kernel: 4000  02978000 00000000 00004000 00000000 00000421 00000000 a1684000 ffffffc0
Nov 18 08:49:46 hostname kernel: 4020  00050005 00000003 00000000 00000001 00000000 00000000 00000000 00000000
Nov 18 08:49:46 hostname kernel: 4040  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Nov 18 08:49:46 hostname kernel: 4060  00000000 00000000 00000000 00000000 7d814070 ffffffc0 7d814070 ffffffc0
Nov 18 08:49:46 hostname kernel: 
                                  X27: 0xffffffc0966ab6e8:
Nov 18 08:49:46 hostname kernel: b6e8  99a2c140 ffffffc0 966ab7e0 ffffffc0 024dbe3c ffffff80 db58dc00 ffffffc0
Nov 18 08:49:46 hostname kernel: b708  99b36150 ffffffc0 00000000 00000000 7ce981f0 ffffffc0 a1684000 ffffffc0
Nov 18 08:49:46 hostname kernel: b728  db58dc40 ffffffc0 99a9dd80 ffffffc0 00238000 00000000 bdb446d0 ffffffc0
Nov 18 08:49:46 hostname kernel: b748  bdb44710 ffffffc0 db58dc40 ffffffc0 09218a34 ffffff80 966ab780 ffffffc0
Nov 18 08:49:46 hostname kernel: b768  966ab768 ffffffc0 966ab768 ffffffc0 000001d0 f5000000 ffffffff 00ffffff
Nov 18 08:49:46 hostname kernel: b788  01d00000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
Nov 18 08:49:46 hostname kernel: b7a8  da65ae00 ffffffc0 9e076800 ffffffc0 7ce981f0 ffffffc0 00000000 00000000
Nov 18 08:49:46 hostname kernel: b7c8  00000000 00000040 00000000 00000000 00000001 00000000 966ab830 ffffffc0
Nov 18 08:49:46 hostname kernel: 
                                  X29: 0xffffffc0966ab500:
Nov 18 08:49:46 hostname kernel: b500  00001300 00000000 00000080 00000000 00000000 00000000 00000400 00000000
Nov 18 08:49:46 hostname kernel: b520  7d814000 ffffffc0 966ab768 ffffffc0 00000013 00000000 966ab580 ffffffc0
Nov 18 08:49:46 hostname kernel: b540  091d1a50 ffffff80 966ab580 ffffffc0 091d16dc ffffff80 80000145 00000000
Nov 18 08:49:46 hostname kernel: b560  966ab5a0 ffffffc0 0245fd00 ffffff80 ffffffff ffffffff 00000019 00000000
Nov 18 08:49:46 hostname kernel: b580  966ab650 ffffffc0 091d1a50 ffffff80 00000000 00000000 00000041 00000000
Nov 18 08:49:46 hostname kernel: b5a0  99a2c140 ffffffc0 7ce98358 ffffffc0 00000000 00000000 00000000 00000000
Nov 18 08:49:46 hostname kernel: b5c0  00000400 00000000 7d814000 ffffffc0 00000000 00000000 00000000 00000000
Nov 18 08:49:46 hostname kernel: b5e0  00000001 00000000 00000000 00000000 966ab650 ffffffc0 024651f0 ffffff80
Nov 18 08:49:46 hostname kernel: 
Nov 18 08:49:46 hostname kernel: Process btrfs-cleaner (pid: 16429, stack limit = 0xffffffc0966a8000)
Nov 18 08:49:46 hostname kernel: Stack: (0xffffffc0966ab580 to 0xffffffc0966ac000)
Nov 18 08:49:46 hostname kernel: b580: ffffffc0966ab650 ffffff80091d1a50 0000000000000000 0000000000000041
Nov 18 08:49:46 hostname kernel: b5a0: ffffffc099a2c140 ffffffc07ce98358 0000000000000000 0000000000000000
Nov 18 08:49:46 hostname kernel: b5c0: 0000000000000400 ffffffc07d814000 0000000000000000 0000000000000000
Nov 18 08:49:46 hostname kernel: b5e0: 0000000000000001 0000000000000000 ffffffc0966ab650 ffffff80024651f0
Nov 18 08:49:46 hostname kernel: b600: ffffffc07ce98358 0000000000000000 ffffffc0966ab640 ffffff8009218258
Nov 18 08:49:46 hostname kernel: b620: ffffffc0966ab640 ffffff8009218240 ffffffc0dc69d400 0000000000000040
Nov 18 08:49:46 hostname kernel: b640: ffffffc0966ab6b0 ffffff80024d8b60 ffffffc0966ab6b0 ffffff80091d1de8
Nov 18 08:49:46 hostname kernel: b660: 0000000000000000 ffffffc099a2c140 ffffffc07ce98358 0000000000000000
Nov 18 08:49:46 hostname kernel: b680: 000000000000003f ffffffc09e076800 0000000000000034 ffffffc07d814000
Nov 18 08:49:46 hostname kernel: b6a0: 0000000000000000 ffffff800ad75c60 ffffffc0966ab6f0 ffffff80024db660
Nov 18 08:49:46 hostname kernel: b6c0: ffffffc07ce981f0 ffffffc099a2c140 0000000000000000 ffffff800ad75c60
Nov 18 08:49:46 hostname kernel: b6e0: ffffffc099a9dd80 ffffffc099a2c140 ffffffc0966ab7e0 ffffff80024dbe3c
Nov 18 08:49:46 hostname kernel: b700: ffffffc0db58dc00 ffffffc099b36150 0000000000000000 ffffffc07ce981f0
Nov 18 08:49:46 hostname kernel: b720: ffffffc0a1684000 ffffffc0db58dc40 ffffffc099a9dd80 0000000000238000
Nov 18 08:49:46 hostname kernel: b740: ffffffc0bdb446d0 ffffffc0bdb44710 ffffffc0db58dc40 ffffff8009218a34
Nov 18 08:49:46 hostname kernel: b760: ffffffc0966ab780 ffffffc0966ab768 ffffffc0966ab768 f5000000000001d0
Nov 18 08:49:46 hostname kernel: b780: 00ffffffffffffff 0000000001d00000 0000000000000000 0000000000000000
Nov 18 08:49:46 hostname kernel: b7a0: 0000000000000000 ffffffc0da65ae00 ffffffc09e076800 ffffffc07ce981f0
Nov 18 08:49:46 hostname kernel: b7c0: 0000000000000000 0000004000000000 0000000000000000 0000000000000001
Nov 18 08:49:46 hostname kernel: b7e0: ffffffc0966ab830 ffffff800246d924 ffffff800254c440 ffffffc0db58dc00
Nov 18 08:49:46 hostname kernel: b800: ffffffc0a1684b18 ffffffc0db58dc40 ffffffc0bdb446c0 0000000000000000
Nov 18 08:49:46 hostname kernel: b820: ffffffc0a1684000 ffffffc0bdb446f8 ffffffc0966ab8c0 ffffff80024784c4
Nov 18 08:49:46 hostname kernel: b840: ffffffc0db58dc00 ffffffc0db58d000 ffffffc0a1684b18 ffffffc0a1684b1c
Nov 18 08:49:46 hostname kernel: b860: 0000000000000024 0000000000004000 0000000000000000 0000000000000000
Nov 18 08:49:46 hostname kernel: b880: 0000000000000024 0000000000000000 ffffffc0a1684b18 0000000000000000
Nov 18 08:49:46 hostname kernel: b8a0: ffffffc0dc69d400 ffffff80090fc5b0 ffffffc0966ab8b0 ffffffc0966ab8b0
Nov 18 08:49:46 hostname kernel: b8c0: ffffffc0966ab9b0 ffffff8002479330 0000000000004000 0000000000000000
Nov 18 08:49:46 hostname kernel: b8e0: 0000000000004000 ffffffc09e072800 0000000000000000 0000000000000000
Nov 18 08:49:46 hostname kernel: b900: ffffffc0966abacf 0000000000004000 0000000000000024 0000000000000001
Nov 18 08:49:46 hostname kernel: b920: 0000000001d00000 000000000248c788 0000000000000001 ffffffc09e073800
Nov 18 08:49:46 hostname kernel: b940: 0000000100000000 ffffffc0966abacf 0000000000000024 ffffffc0db58d0d0
Nov 18 08:49:46 hostname kernel: b960: 0000000200000002 0000000000004000 ffffffc09e072800 0000000100000000
Nov 18 08:49:46 hostname kernel: b980: 0000000000000024 ffffffc0db58d000 0000000000000000 0000000000004000
Nov 18 08:49:46 hostname kernel: b9a0: 0000000000000000 0000000000010000 ffffffc0966aba30 ffffff800247afb0
Nov 18 08:49:46 hostname kernel: b9c0: ffffffc09e072800 0000000000004000 ffffffc09d2cc000 0000000000000000
Nov 18 08:49:46 hostname kernel: b9e0: ffffffc0a1684000 0000000000000000 0000000000000000 ffffffc0a1684148
Nov 18 08:49:46 hostname kernel: ba00: ffffffc0a1684130 ffffffc0a1684130 000000009e072800 ffffffc0a1684000
Nov 18 08:49:46 hostname kernel: ba20: ffffffc000000000 0000000000000001 ffffffc0966abae0 ffffff8002460b68
Nov 18 08:49:46 hostname kernel: ba40: ffffffc07d814348 ffffffc09d2cc000 0000000000000000 ffffffc0966abc68
Nov 18 08:49:46 hostname kernel: ba60: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
Nov 18 08:49:46 hostname kernel: ba80: ffffffc09e072a00 ffffffc09e072800 ffffffc0d8302f00 0000000000000004
Nov 18 08:49:46 hostname kernel: baa0: 0000000000000161 ffffffc0966abb6f 000000007d814348 ffffffc09d2cc000
Nov 18 08:49:46 hostname kernel: bac0: 0000000000000000 00ffffc0966abc68 a800000000000000 0000000000000000
Nov 18 08:49:46 hostname kernel: bae0: ffffffc0966abb80 ffffff80024610d4 ffffffc07d814348 ffffffc09d2cc000
Nov 18 08:49:46 hostname kernel: bb00: ffffffc09e072800 0000000000000000 ffffffc0966abc68 0000000000000000
Nov 18 08:49:46 hostname kernel: bb20: 0000000000000000 ffffffc0966abd2e 0000000000000000 ffffffc099b360e0
Nov 18 08:49:46 hostname kernel: bb40: ffffffc0966abb60 ffffffc07d814348 ffffffc000000000 00000000024cdf20
Nov 18 08:49:46 hostname kernel: bb60: ffffffc0966abb80 00ffff8000000000 f900000000000000 0000000000000001
Nov 18 08:49:46 hostname kernel: bb80: ffffffc0966abbd0 ffffff8002464b0c ffffffc09e072800 00000040ffffffff
Nov 18 08:49:46 hostname kernel: bba0: 00000000ffffffff ffffffc09d2cc000 0000000000000000 0000000000000019
Nov 18 08:49:46 hostname kernel: bbc0: 0000000000000001 00000040ffffffff ffffffc0966abc70 ffffff80024bc438
Nov 18 08:49:46 hostname kernel: bbe0: ffffffc099b360e0 ffffffc0d832de48 00000000c6500000 ffffffc09e072800
Nov 18 08:49:46 hostname kernel: bc00: 0000000000000065 0000000000000019 ffffffc09d2cc000 ffffffc0a1684ff0
Nov 18 08:49:46 hostname kernel: bc20: ffffffc0dc712b28 ffffffc0dc712a00 0000000000000065 00000001ffffffff
Nov 18 08:49:46 hostname kernel: bc40: 0000000000000000 0000000200000002 ffffffc000000001 ffffffc09e072a00
Nov 18 08:49:46 hostname kernel: bc60: 00000002966abc70 ffffffc07d814348 ffffffc0966abd50 ffffff800247d17c
Nov 18 08:49:46 hostname kernel: bc80: ffffffc0a1684000 ffffffc0dc712b10 0000000000000000 ffffffc0dc712a40
Nov 18 08:49:46 hostname kernel: bca0: ffffffc09d2cc000 ffffffc0a1684fb0 ffffffc0db58d000 ffffffc0a1684ff0
Nov 18 08:49:46 hostname kernel: bcc0: ffffffc0dc712b28 ffffffc0dc712a00 ffffffc0dc712b28 ffffffc099a9dc80
Nov 18 08:49:46 hostname kernel: bce0: ffffffc0a176f400 0000000002400040 ffffffc09e070800 ffffffc09677b360
Nov 18 08:49:46 hostname kernel: bd00: ffffffc09e073800 0000000000000000 0000000083d00000 ffffffc0d832de48
Nov 18 08:49:46 hostname kernel: bd20: ffffffc0966abd50 0001ff800247d148 00cc000000000000 ff00000000c65000
Nov 18 08:49:46 hostname kernel: bd40: ffffffc0a1684000 ffffffc0a1684ff0 ffffffc0966abde0 ffffff8002484e28
Nov 18 08:49:46 hostname kernel: bd60: ffffffc0dc69d400 ffffffc09e076800 ffffff8002484cec ffffff8002484d1c
Nov 18 08:49:46 hostname kernel: bd80: 0000000000000001 0000000000000000 0000000000000000 0000000000000000
Nov 18 08:49:46 hostname kernel: bda0: 0000000000000000 0000000000000000 ffffffc0a1684fb8 ffffffc09e073800
Nov 18 08:49:46 hostname kernel: bdc0: 0000000083d00000 ffffffc0a1684fc8 00000000c3cfffff 0000000083d00000
Nov 18 08:49:46 hostname kernel: bde0: ffffffc0966abe20 ffffff80090cc68c ffffffc0beff0b40 ffffffc0dc69d400
Nov 18 08:49:46 hostname kernel: be00: ffffff800a19e1b0 ffffffc09e076800 ffffff8002484cb4 0000000000000000
Nov 18 08:49:46 hostname kernel: be20: 0000000000000000 ffffff8009082ec0 ffffff80090cc590 ffffffc0beff0b40
Nov 18 08:49:46 hostname kernel: be40: 0000000000000000 0000000000000000 0000000000000000 ffffff80090dd044
Nov 18 08:49:46 hostname kernel: be60: ffffffc0dccf0e00 0000000000000000 0000000000000000 ffffffc09e076800
Nov 18 08:49:46 hostname kernel: be80: 0000000000000000 0000000000000000 ffffffc0966abe90 ffffffc0966abe90
Nov 18 08:49:46 hostname kernel: bea0: ffffff8000000000 ffffffc000000000 ffffffc0966abeb0 ffffffc0966abeb0
Nov 18 08:49:46 hostname kernel: bec0: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
Nov 18 08:49:46 hostname kernel: bee0: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
Nov 18 08:49:46 hostname kernel: bf00: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
Nov 18 08:49:46 hostname kernel: bf20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
Nov 18 08:49:46 hostname kernel: bf40: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
Nov 18 08:49:46 hostname kernel: bf60: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
Nov 18 08:49:46 hostname kernel: bf80: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
Nov 18 08:49:46 hostname kernel: bfa0: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
Nov 18 08:49:46 hostname kernel: bfc0: 0000000000000000 0000000000000005 0000000000000000 0000000000000000
Nov 18 08:49:46 hostname kernel: bfe0: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
Nov 18 08:49:46 hostname kernel: Call trace:
Nov 18 08:49:46 hostname kernel: Exception stack(0xffffffc0966ab3b0 to 0xffffffc0966ab4e0)
Nov 18 08:49:46 hostname kernel: b3a0:                                   0000000000000041 0000007fffffffff
Nov 18 08:49:46 hostname kernel: b3c0: ffffffc0966ab580 ffffff80091d16dc ffffff800ac99000 0000000000000000
Nov 18 08:49:46 hostname kernel: b3e0: ffffffc0966ab440 ffffff8009217d7c ffffffbebff76df0 ffffffc0b3aa1900
Nov 18 08:49:46 hostname kernel: b400: 0000000002400040 ffffff80024a0f10 0000000002400040 00000000024f3ee0
Nov 18 08:49:46 hostname kernel: b420: ffffffc0d8302f80 0000000000000000 ffffffc0dd200000 0000000000000000
Nov 18 08:49:46 hostname kernel: b440: ffffffc0966ab570 ffffff8009218b68 0000000002420048 ffffffc07ce981f0
Nov 18 08:49:46 hostname kernel: b460: 0000000000001300 0000000000000080 0000000000000041 0000000000000080
Nov 18 08:49:46 hostname kernel: b480: 000000000000003f 0000000000000000 ffffffc099a2c180 0000000000000000
Nov 18 08:49:46 hostname kernel: b4a0: 0000000000000040 0000000000000004 000000000007ea4a 0000000000000003
Nov 18 08:49:46 hostname kernel: b4c0: 0000000000000003 00000000efe4b99a 0000000000000000 0000000000000000
Nov 18 08:49:47 hostname kernel: [<ffffff80091d16dc>] __do_page_cache_readahead+0x4c/0x290
Nov 18 08:49:47 hostname kernel: [<ffffff80091d1a50>] ondemand_readahead.isra.0+0x130/0x254
Nov 18 08:49:47 hostname kernel: [<ffffff80091d1de8>] page_cache_sync_readahead+0x64/0xa0
Nov 18 08:49:47 hostname kernel: [<ffffff80024db660>] __load_free_space_cache+0x200/0x6f0 [btrfs]
Nov 18 08:49:47 hostname kernel: [<ffffff80024dbe3c>] load_free_space_cache+0xbc/0x1d0 [btrfs]
Nov 18 08:49:47 hostname kernel: [<ffffff800246d924>] cache_block_group+0x1a4/0x430 [btrfs]
Nov 18 08:49:47 hostname kernel: [<ffffff80024784c4>] find_free_extent+0x304/0x10c0 [btrfs]
Nov 18 08:49:47 hostname kernel: [<ffffff8002479330>] btrfs_reserve_extent+0xb0/0x220 [btrfs]
Nov 18 08:49:47 hostname kernel: [<ffffff800247afb0>] btrfs_alloc_tree_block+0x110/0x540 [btrfs]
Nov 18 08:49:47 hostname kernel: [<ffffff8002460b68>] __btrfs_cow_block+0x128/0x520 [btrfs]
Nov 18 08:49:47 hostname kernel: [<ffffff80024610d4>] btrfs_cow_block+0xd0/0x21c [btrfs]
Nov 18 08:49:47 hostname kernel: [<ffffff8002464b0c>] btrfs_search_slot+0x1dc/0x940 [btrfs]
Nov 18 08:49:47 hostname kernel: [<ffffff80024bc438>] btrfs_remove_chunk+0x178/0x810 [btrfs]
Nov 18 08:49:47 hostname kernel: [<ffffff800247d17c>] btrfs_delete_unused_bgs+0x268/0x3ec [btrfs]
Nov 18 08:49:47 hostname kernel: [<ffffff8002484e28>] cleaner_kthread+0x174/0x1bc [btrfs]
Nov 18 08:49:47 hostname kernel: [<ffffff80090cc68c>] kthread+0xfc/0x100
Nov 18 08:49:47 hostname kernel: [<ffffff8009082ec0>] ret_from_fork+0x10/0x50
Nov 18 08:49:47 hostname kernel: Code: d503201f b9407e80 f9400281 52826002 (b94046a3) 
Nov 18 08:49:47 hostname kernel: ---[ end trace 4c057dc82469c97a ]---

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