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Date:   Wed, 12 Jul 2023 07:40:55 +0700
From:   Bagas Sanjaya <bagasdotme@gmail.com>
To:     Moh Oktavi Aziz Nugraha <moktavizzen@gmail.com>
Cc:     marcel@holtmann.org, johan.hedberg@gmail.com, luiz.dentz@gmail.com,
        avisaziz123@gmail.com, linux-bluetooth@vger.kernel.org
Subject: Re: PROBLEM: ThinkPad T430 (BCM20702) Can't Detect Bluetooth Devices
 Starting from Kernel v6.1.0 Until Now v6.3.1
Message-ID: <ZK32l3yQEMdmttOG@debian.me>
References: <CAHCNbp3ztCcp31JdVYuxy+s1qXaa+Zy74eGJmfPmyrx_6Wjhhw@mail.gmail.com>
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On Sat, May 06, 2023 at 06:33:48PM +0700, Moh Oktavi Aziz Nugraha wrote:
> [1.] One line summary of the problem:
> ThinkPad T430 (BCM20702) Can't Detect Bluetooth Devices Starting from
> Kernel v6.1.0 Until Now v6.3.1
>=20
> [2.] Full description of the problem/report:
> Last week I installed Ubuntu, but my bluetooth can't detect devices
> when I use kernel 6.1 and above. My bluetooth was fine when I used
> kernel 6.0 and before. I'm filing this bug on the kernel because when
> I tested this bug on Fedora and Ubuntu, the same problem appeared when
> I used kernel version 6.1 and above.
> The workaround for version 6.1 and above is to run "hcitool scan" on
> the terminal if I want to detect bluetooth devices.
> There are similar problem in earlier kernel version, but it was fixed
> according to this post https://askubuntu.com/a/1169415
> Here is the video i made to reproduce the issue https://youtu.be/pHjOIAk9=
0Zc
> Here is the information about my Bluetooth card:
> Bus 001 Device 007: ID 0a5c:21e6 Broadcom Corp. BCM20702 Bluetooth 4.0
> [ThinkPad]
> What I have tried:
> - Installed Fedora 38 and then Install bluetooth firmware
> https://github.com/winterheart/broadcom-bt-firmware, and then
> downgrade bluez (bluetooth cant detect devices)
> - Installed Fedora 37 (no problem, because the default kernel is 6.0)
> - installed Ubuntu 23.04 and then  install bluetooth firmware
> https://github.com/winterheart/broadcom-bt-firmware (bluetooth cant
> detect devices)
> - Installed Ubuntu 22.10 (no problem, because the default kernel is 5.19)
> - Installed Ubuntu 22.04 (no problem, because the default kernel is 5.19)
> - Go back to Ubuntu 23.04 and then try these kernel:
> v5.15.110 (good)
> v5.19.17 (good)
> v6.0.12 (good)
> v6.0.19 (good)
> v6.1.27 (bad)
> v6.2.14 (bad)
> v6.3.1 (bad)
> After trying all of that I came to conclusion that this bug is caused
> by the kernel.
> I want to try git bisect to find the commit that caused the regression
> between kernel versions 6.0 and 6.1, but it might take me a while
> since it=E2=80=99s my first time using it. Plus, I=E2=80=99ve got a bunch=
 of college
> assignments to finish up this week, so I=E2=80=99m a bit strapped for tim=
e.

Can you please perform bisection using git to find the culprit?
See [1] for details.

[1]: https://docs.kernel.org/admin-guide/bug-bisect.html

>=20
> [3.] Keywords (i.e., modules, networking, kernel):
> bluetooth, networking, broadcom, bcm20702, thinkpad, t430
>=20
> [4.] Kernel information
> [4.1.] Kernel version (from /proc/version):
> Linux version 6.3.1-060301-generic (kernel@kathleen)
> (x86_64-linux-gnu-gcc-12 (Ubuntu 12.2.0-17ubuntu1) 12.2.0, GNU ld (GNU
> Binutils for Ubuntu) 2.40) #202304302031 SMP PREEMPT_DYNAMIC Mon May
> 1 00:41:22 UTC 2023
> [4.2.] Kernel .config file:
> <attachment1-KernelConfig.txt>
>=20
> [5.] Most recent kernel version which did not have the bug:
> 6.0.19
>=20
> [6.] Output of Oops.. message (if applicable) with symbolic
> information resolved (see Documentation/admin-guide/bug-hunting.rst)
> I can't find the Oops message when i use "journalctl | grep Oops"
>=20
> [7.] A small shell script or example program which triggers the
> problem (if possible)
> I cant write a shell script yet, but i have made a video to show the
> trigger and how to reproduce the issue https://youtu.be/pHjOIAk90Zc
>=20
> [8.] Environment
> [8.1.] Software (add the output of the ver_linux script here)
> <attachment2-Software.txt>
> [8.2.] Processor information (from /proc/cpuinfo):
> <attachment3-Processor.txt>
> [8.3.] Module information (from /proc/modules):
> <attachment4-Module.txt>
> [8.4.] Loaded driver and hardware information (/proc/ioports, /proc/iomem)
> <attachment5-DriverHW.txt>
> [8.5.] PCI information ('lspci -vvv' as root)
> <attachment6-PCI.txt>
> [8.6.] SCSI information (from /proc/scsi/scsi)
> <attachment7-SCSI.txt>
> [8.7.] Other information that might be relevant to the problem (please
> look in /proc and include all information that you think to be
> relevant):
> <attachment9-lsusb.txt>
>=20
> [X.] Other notes, patches, fixes, workarounds:
> The workaround for version 6.1 and above is to run "hcitool scan" on
> the terminal if I want to detect bluetooth devices.
>=20
> NOTE:
> I sent this email again because the first time i got a message
> Content-Policy reject msg: The message contains HTML subpart,
>     therefore we consider it SPAM or Outlook Virus.  TEXT/PLAIN is accept=
ed.!

> ccm 20480 6 - Live 0x0000000000000000
> rfcomm 98304 16 - Live 0x0000000000000000
> vboxnetadp 28672 0 - Live 0x0000000000000000 (OE)
> vboxnetflt 32768 0 - Live 0x0000000000000000 (OE)
> xt_CHECKSUM 16384 1 - Live 0x0000000000000000
> xt_MASQUERADE 20480 3 - Live 0x0000000000000000
> xt_conntrack 16384 1 - Live 0x0000000000000000
> snd_seq_dummy 16384 0 - Live 0x0000000000000000
> snd_hrtimer 16384 1 - Live 0x0000000000000000
> ipt_REJECT 16384 2 - Live 0x0000000000000000
> nf_reject_ipv4 16384 1 ipt_REJECT, Live 0x0000000000000000
> xt_tcpudp 20480 9 - Live 0x0000000000000000
> nft_compat 20480 16 - Live 0x0000000000000000
> nft_chain_nat 16384 2 - Live 0x0000000000000000
> nf_nat 61440 2 xt_MASQUERADE,nft_chain_nat, Live 0x0000000000000000
> nf_conntrack 196608 3 xt_MASQUERADE,xt_conntrack,nf_nat, Live 0x000000000=
0000000
> nf_defrag_ipv6 24576 1 nf_conntrack, Live 0x0000000000000000
> nf_defrag_ipv4 16384 1 nf_conntrack, Live 0x0000000000000000
> vboxdrv 688128 2 vboxnetadp,vboxnetflt, Live 0x0000000000000000 (OE)
> nf_tables 348160 138 nft_compat,nft_chain_nat, Live 0x0000000000000000
> libcrc32c 16384 3 nf_nat,nf_conntrack,nf_tables, Live 0x0000000000000000
> nfnetlink 24576 2 nft_compat,nf_tables, Live 0x0000000000000000
> cmac 16384 3 - Live 0x0000000000000000
> algif_hash 20480 1 - Live 0x0000000000000000
> algif_skcipher 16384 1 - Live 0x0000000000000000
> af_alg 32768 6 algif_hash,algif_skcipher, Live 0x0000000000000000
> bridge 413696 0 - Live 0x0000000000000000
> stp 16384 1 bridge, Live 0x0000000000000000
> llc 16384 2 bridge,stp, Live 0x0000000000000000
> bnep 32768 2 - Live 0x0000000000000000
> intel_rapl_msr 20480 0 - Live 0x0000000000000000
> intel_rapl_common 40960 1 intel_rapl_msr, Live 0x0000000000000000
> x86_pkg_temp_thermal 20480 0 - Live 0x0000000000000000
> intel_powerclamp 24576 0 - Live 0x0000000000000000
> snd_hda_codec_hdmi 94208 1 - Live 0x0000000000000000
> coretemp 24576 0 - Live 0x0000000000000000
> snd_ctl_led 24576 0 - Live 0x0000000000000000
> btusb 69632 0 - Live 0x0000000000000000
> btrtl 28672 1 btusb, Live 0x0000000000000000
> kvm_intel 528384 0 - Live 0x0000000000000000
> btbcm 28672 1 btusb, Live 0x0000000000000000
> snd_hda_codec_realtek 192512 1 - Live 0x0000000000000000
> btintel 53248 1 btusb, Live 0x0000000000000000
> snd_hda_codec_generic 118784 1 snd_hda_codec_realtek, Live 0x000000000000=
0000
> uvcvideo 139264 0 - Live 0x0000000000000000
> btmtk 16384 1 btusb, Live 0x0000000000000000
> snd_hda_intel 61440 1 - Live 0x0000000000000000
> binfmt_misc 24576 1 - Live 0x0000000000000000
> kvm 1347584 1 kvm_intel, Live 0x0000000000000000
> videobuf2_vmalloc 20480 1 uvcvideo, Live 0x0000000000000000
> snd_intel_dspcfg 36864 1 snd_hda_intel, Live 0x0000000000000000
> bluetooth 1048576 46 rfcomm,bnep,btusb,btrtl,btbcm,btintel,btmtk, Live 0x=
0000000000000000
> snd_intel_sdw_acpi 20480 1 snd_intel_dspcfg, Live 0x0000000000000000
> uvc 16384 1 uvcvideo, Live 0x0000000000000000
> irqbypass 16384 1 kvm, Live 0x0000000000000000
> iwldvm 348160 0 - Live 0x0000000000000000
> videobuf2_memops 20480 1 videobuf2_vmalloc, Live 0x0000000000000000
> crct10dif_pclmul 16384 1 - Live 0x0000000000000000
> snd_hda_codec 204800 4 snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_c=
odec_generic,snd_hda_intel, Live 0x0000000000000000
> videobuf2_v4l2 36864 1 uvcvideo, Live 0x0000000000000000
> polyval_clmulni 16384 0 - Live 0x0000000000000000
> polyval_generic 16384 1 polyval_clmulni, Live 0x0000000000000000
> ghash_clmulni_intel 16384 0 - Live 0x0000000000000000
> ecdh_generic 16384 2 bluetooth, Live 0x0000000000000000
> nls_iso8859_1 16384 1 - Live 0x0000000000000000
> mei_pxp 20480 0 - Live 0x0000000000000000
> mei_hdcp 28672 0 - Live 0x0000000000000000
> i915 3919872 37 - Live 0x0000000000000000
> ecc 45056 1 ecdh_generic, Live 0x0000000000000000
> sha512_ssse3 53248 0 - Live 0x0000000000000000
> videodev 344064 2 uvcvideo,videobuf2_v4l2, Live 0x0000000000000000
> snd_hda_core 139264 5 snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_co=
dec_generic,snd_hda_intel,snd_hda_codec, Live 0x0000000000000000
> mac80211 1634304 1 iwldvm, Live 0x0000000000000000
> aesni_intel 397312 8 - Live 0x0000000000000000
> snd_hwdep 20480 1 snd_hda_codec, Live 0x0000000000000000
> videobuf2_common 86016 4 uvcvideo,videobuf2_vmalloc,videobuf2_memops,vide=
obuf2_v4l2, Live 0x0000000000000000
> crypto_simd 20480 1 aesni_intel, Live 0x0000000000000000
> snd_pcm 192512 4 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hda_c=
ore, Live 0x0000000000000000
> mc 86016 4 uvcvideo,videobuf2_v4l2,videodev,videobuf2_common, Live 0x0000=
000000000000
> cryptd 28672 3 ghash_clmulni_intel,crypto_simd, Live 0x0000000000000000
> snd_seq_midi 20480 0 - Live 0x0000000000000000
> rapl 20480 0 - Live 0x0000000000000000
> libarc4 16384 1 mac80211, Live 0x0000000000000000
> snd_seq_midi_event 16384 1 snd_seq_midi, Live 0x0000000000000000
> drm_buddy 20480 1 i915, Live 0x0000000000000000
> ttm 102400 1 i915, Live 0x0000000000000000
> snd_rawmidi 53248 1 snd_seq_midi, Live 0x0000000000000000
> intel_cstate 24576 0 - Live 0x0000000000000000
> drm_display_helper 217088 1 i915, Live 0x0000000000000000
> iwlwifi 569344 1 iwldvm, Live 0x0000000000000000
> thinkpad_acpi 159744 0 - Live 0x0000000000000000
> snd_seq 94208 9 snd_seq_dummy,snd_seq_midi,snd_seq_midi_event, Live 0x000=
0000000000000
> cec 94208 2 i915,drm_display_helper, Live 0x0000000000000000
> nvram 16384 1 thinkpad_acpi, Live 0x0000000000000000
> think_lmi 45056 0 - Live 0x0000000000000000
> snd_seq_device 16384 3 snd_seq_midi,snd_rawmidi,snd_seq, Live 0x000000000=
0000000
> rc_core 77824 1 cec, Live 0x0000000000000000
> ledtrig_audio 16384 3 snd_ctl_led,snd_hda_codec_generic,thinkpad_acpi, Li=
ve 0x0000000000000000
> mei_me 57344 2 - Live 0x0000000000000000
> firmware_attributes_class 16384 1 think_lmi, Live 0x0000000000000000
> at24 24576 0 - Live 0x0000000000000000
> wmi_bmof 16384 0 - Live 0x0000000000000000
> platform_profile 16384 1 thinkpad_acpi, Live 0x0000000000000000
> snd_timer 49152 3 snd_hrtimer,snd_pcm,snd_seq, Live 0x0000000000000000
> drm_kms_helper 258048 2 i915,drm_display_helper, Live 0x0000000000000000
> cfg80211 1257472 3 iwldvm,mac80211,iwlwifi, Live 0x0000000000000000
> snd 135168 17 snd_hda_codec_hdmi,snd_ctl_led,snd_hda_codec_realtek,snd_hd=
a_codec_generic,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,t=
hinkpad_acpi,snd_seq,snd_seq_device,snd_timer, Live 0x0000000000000000
> i2c_algo_bit 20480 1 i915, Live 0x0000000000000000
> mei 167936 5 mei_pxp,mei_hdcp,mei_me, Live 0x0000000000000000
> syscopyarea 16384 1 drm_kms_helper, Live 0x0000000000000000
> soundcore 16384 2 snd_ctl_led,snd, Live 0x0000000000000000
> sysfillrect 20480 1 drm_kms_helper, Live 0x0000000000000000
> sysimgblt 16384 1 drm_kms_helper, Live 0x0000000000000000
> input_leds 16384 0 - Live 0x0000000000000000
> joydev 32768 0 - Live 0x0000000000000000
> mac_hid 16384 0 - Live 0x0000000000000000
> serio_raw 20480 0 - Live 0x0000000000000000
> msr 16384 0 - Live 0x0000000000000000
> parport_pc 53248 0 - Live 0x0000000000000000
> ppdev 24576 0 - Live 0x0000000000000000
> lp 28672 0 - Live 0x0000000000000000
> parport 73728 3 parport_pc,ppdev,lp, Live 0x0000000000000000
> drm 712704 17 i915,drm_buddy,ttm,drm_display_helper,thinkpad_acpi,drm_kms=
_helper, Live 0x0000000000000000
> efi_pstore 16384 0 - Live 0x0000000000000000
> dmi_sysfs 24576 0 - Live 0x0000000000000000
> ip_tables 36864 0 - Live 0x0000000000000000
> x_tables 65536 7 xt_CHECKSUM,xt_MASQUERADE,xt_conntrack,ipt_REJECT,xt_tcp=
udp,nft_compat,ip_tables, Live 0x0000000000000000
> autofs4 57344 2 - Live 0x0000000000000000
> hid_logitech_hidpp 65536 0 - Live 0x0000000000000000
> crc32_pclmul 16384 0 - Live 0x0000000000000000
> psmouse 212992 0 - Live 0x0000000000000000
> ahci 49152 2 - Live 0x0000000000000000
> hid_logitech_dj 36864 0 - Live 0x0000000000000000
> sdhci_pci 81920 0 - Live 0x0000000000000000
> i2c_i801 40960 0 - Live 0x0000000000000000
> cqhci 40960 1 sdhci_pci, Live 0x0000000000000000
> libahci 57344 1 ahci, Live 0x0000000000000000
> xhci_pci 24576 0 - Live 0x0000000000000000
> i2c_smbus 20480 1 i2c_i801, Live 0x0000000000000000
> e1000e 352256 0 - Live 0x0000000000000000
> sdhci 94208 1 sdhci_pci, Live 0x0000000000000000
> lpc_ich 32768 0 - Live 0x0000000000000000
> xhci_pci_renesas 20480 1 xhci_pci, Live 0x0000000000000000
> video 73728 2 i915,thinkpad_acpi, Live 0x0000000000000000
> wmi 40960 3 think_lmi,wmi_bmof,video, Live 0x0000000000000000
> hid_generic 16384 0 - Live 0x0000000000000000
> usbhid 77824 2 hid_logitech_hidpp,hid_logitech_dj, Live 0x0000000000000000
> hid 176128 4 hid_logitech_hidpp,hid_logitech_dj,hid_generic,usbhid, Live =
0x0000000000000000

> 0000-0000 : PCI Bus 0000:00
>   0000-0000 : dma1
>   0000-0000 : pic1
>   0000-0000 : timer0
>   0000-0000 : timer1
>   0000-0000 : keyboard
>   0000-0000 : PNP0800:00
>   0000-0000 : PNP0C09:00
>     0000-0000 : EC data
>   0000-0000 : keyboard
>   0000-0000 : PNP0C09:00
>     0000-0000 : EC cmd
>   0000-0000 : rtc0
>   0000-0000 : dma page reg
>   0000-0000 : pic2
>   0000-0000 : dma2
>   0000-0000 : fpu
>     0000-0000 : PNP0C04:00
>   0000-0000 : pnp 00:01
>     0000-0000 : ACPI PM1a_EVT_BLK
>     0000-0000 : ACPI PM1a_CNT_BLK
>     0000-0000 : ACPI PM_TMR
>     0000-0000 : ACPI CPU throttle
>     0000-0000 : ACPI GPE0_BLK
>     0000-0000 : iTCO_wdt.1.auto
>     0000-0000 : ACPI PM2_CNT_BLK
>     0000-0000 : iTCO_wdt.1.auto
>   0000-0000 : pnp 00:01
>   0000-0000 : pnp 00:01
> 0000-0000 : PCI conf1
> 0000-0000 : PCI Bus 0000:00
>   0000-0000 : pnp 00:01
>   0000-0000 : pnp 00:01
>   0000-0000 : PCI Bus 0000:04
>   0000-0000 : PCI Bus 0000:02
>   0000-0000 : 0000:00:02.0
>   0000-0000 : 0000:00:1f.2
>     0000-0000 : ahci
>   0000-0000 : 0000:00:19.0
>   0000-0000 : 0000:00:1f.2
>     0000-0000 : ahci
>   0000-0000 : 0000:00:1f.2
>     0000-0000 : ahci
>   0000-0000 : 0000:00:16.3
>     0000-0000 : serial
>   0000-0000 : 0000:00:1f.2
>     0000-0000 : ahci
>   0000-0000 : 0000:00:1f.2
>     0000-0000 : ahci
>   0000-0000 : 0000:00:1f.3
>     0000-0000 : i801_smbus
> 00000000-00000000 : Reserved
> 00000000-00000000 : System RAM
> 00000000-00000000 : Reserved
> 00000000-00000000 : System RAM
> 00000000-00000000 : Reserved
>   00000000-00000000 : PCI Bus 0000:00
> 00000000-00000000 : PCI Bus 0000:00
> 00000000-00000000 : PCI Bus 0000:00
> 00000000-00000000 : PCI Bus 0000:00
> 00000000-00000000 : PCI Bus 0000:00
> 00000000-00000000 : PCI Bus 0000:00
> 00000000-00000000 : PCI Bus 0000:00
> 00000000-00000000 : PCI Bus 0000:00
> 00000000-00000000 : PCI Bus 0000:00
> 00000000-00000000 : PCI Bus 0000:00
> 00000000-00000000 : PCI Bus 0000:00
> 00000000-00000000 : PCI Bus 0000:00
> 00000000-00000000 : PCI Bus 0000:00
>   00000000-00000000 : 0000:00:02.0
> 00000000-00000000 : System ROM
> 00000000-00000000 : System RAM
> 00000000-00000000 : Reserved
> 00000000-00000000 : System RAM
> 00000000-00000000 : Reserved
> 00000000-00000000 : System RAM
> 00000000-00000000 : System RAM
> 00000000-00000000 : System RAM
> 00000000-00000000 : System RAM
> 00000000-00000000 : System RAM
> 00000000-00000000 : Reserved
> 00000000-00000000 : System RAM
> 00000000-00000000 : Reserved
> 00000000-00000000 : System RAM
> 00000000-00000000 : Reserved
> 00000000-00000000 : ACPI Non-volatile Storage
> 00000000-00000000 : ACPI Tables
> 00000000-00000000 : System RAM
> 00000000-00000000 : Reserved
>   00000000-00000000 : Graphics Stolen Memory
> 00000000-00000000 : PCI Bus 0000:00
>   00000000-00000000 : 0000:00:02.0
>   00000000-00000000 : 0000:00:02.0
>   00000000-00000000 : PCI Bus 0000:02
>   00000000-00000000 : PCI Bus 0000:04
>   00000000-00000000 : PCI Bus 0000:04
>   00000000-00000000 : PCI Bus 0000:03
>     00000000-00000000 : 0000:03:00.0
>       00000000-00000000 : iwlwifi
>   00000000-00000000 : PCI Bus 0000:02
>     00000000-00000000 : 0000:02:00.0
>       00000000-00000000 : mmc0
>   00000000-00000000 : 0000:00:19.0
>     00000000-00000000 : e1000e
>   00000000-00000000 : 0000:00:14.0
>     00000000-00000000 : xhci-hcd
>   00000000-00000000 : 0000:00:1b.0
>     00000000-00000000 : ICH HD audio
>   00000000-00000000 : 0000:00:1f.3
>   00000000-00000000 : 0000:00:16.0
>     00000000-00000000 : mei_me
>   00000000-00000000 : 0000:00:1f.2
>     00000000-00000000 : ahci
>   00000000-00000000 : 0000:00:1d.0
>     00000000-00000000 : ehci_hcd
>   00000000-00000000 : 0000:00:1a.0
>     00000000-00000000 : ehci_hcd
>   00000000-00000000 : 0000:00:19.0
>     00000000-00000000 : e1000e
>   00000000-00000000 : 0000:00:16.3
>   00000000-00000000 : PCI MMCONFIG 0000 [bus 00-3f]
>     00000000-00000000 : Reserved
> 00000000-00000000 : IOAPIC 0
> 00000000-00000000 : HPET 0
>   00000000-00000000 : PNP0103:00
> 00000000-00000000 : pnp 00:01
> 00000000-00000000 : pnp 00:01
> 00000000-00000000 : pnp 00:01
> 00000000-00000000 : Reserved
>   00000000-00000000 : pnp 00:01
>     00000000-00000000 : iTCO_wdt.1.auto
> 00000000-00000000 : PCI Bus 0000:00
>   00000000-00000000 : 00:05 TPM
>   00000000-00000000 : pnp 00:01
> 00000000-00000000 : pnp 00:00
>   00000000-00000000 : Local APIC
>   00000000-00000000 : pnp 00:01
> 00000000-00000000 : System RAM
>   00000000-00000000 : Kernel code
>   00000000-00000000 : Kernel rodata
>   00000000-00000000 : Kernel data
>   00000000-00000000 : Kernel bss
> 00000000-00000000 : Reserved
> 00000000-00000000 : RAM buffer

No wonder why this regression is being ignored: the reporter didn't
bisect (hence I asked above).

To the reporter: Does this regression also occurs on latest mainline
(currently v6.5-rc1)?

#regzbot poke

--=20
An old man doll... just what I always wanted! - Clara

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