[Bug 215594] New: Unable to transfer big files to Nokia N9 and Jolla phone

[Bug 215594] New: Unable to transfer big files to Nokia N9 and Jolla phone

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=215594

            Bug ID: 215594
           Summary: Unable to transfer big files to Nokia N9 and Jolla
                    phone
           Product: Drivers
           Version: 2.5
    Kernel Version: 5.16-rc1
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Bluetooth
          Assignee: linux-bluetooth@vger.kernel.org
          Reporter: pmenzel+bugzilla.kernel.org@molgen.mpg.de
        Regression: No

Created attachment 300440
  --> https://bugzilla.kernel.org/attachment.cgi?id=300440&action=edit
Output of `btmon --write /dev/shm/btmon-trace.log`

Report:
https://lore.kernel.org/linux-bluetooth/def03073-3fab-3b34-6ffc-702bb1b3758f@leemhuis.info/T/#m04445e920610d42a9510d0f6d97afa5376e4a3ca

Created Bugzilla issue to upload log files.

Unfortunately, I do not know, how to capture `obexd` logs. `obexd -d` did not
print any messages to the terminal. `obexctl --monitor` also did not get it
more verbose.

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[Bug 215594] Unable to transfer big files to Nokia N9 and Jolla phone

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=215594

Luiz Von Dentz (luiz.dentz@gmail.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |luiz.dentz@gmail.com

--- Comment #1 from Luiz Von Dentz (luiz.dentz@gmail.com) ---
> ACL Data RX: Handle 256 flags 0x02 dlen 15                                   
>                                                                      #102
> [hci0] 40.702432
      Channel: 65 len 11 [PSM 3 mode Basic (0x00)] {chan 0}
      RFCOMM: Unnumbered Info with Header Check (UIH) (0xef)
         Address: 0x49 cr 0 dlci 0x12
         Control: 0xef poll/final 0
         Length: 7
         FCS: 0x14
        a0 00 07 10 00 7f ff 14                          ........        
= obexctl: [^A^BNEW^A^B] Session /org/bluez/obex/client/session0 [default]     
                                                                         
40.703445
= obexctl: [^A^BNEW^A^B] ObjectPush /org/bluez/obex/client/session0            
                                                                         
40.703761
= obexctl: Connection successful                                               
                                                                               
 40.703803
= obexctl: send /lib/systemd/systemd                                           
                                                                               
 46.405464
= obexctl: Attempting to send /lib/systemd/systemd to
/org/bluez/obex/client/session0                                                
                           46.405516
= obexctl: [^A^BNEW^A^B] Transfer /org/bluez/obex/client/session0/transfer0    
                                                                         
46.407098
= obexctl: Transfer /org/bluez/obex/client/session0/transfer0                  
                                                                               
 46.407161
= obexctl:      Status: queued                                                 
                                                                               
     46.40>
= obexctl:      Name: systemd                                                  
                                                                               
     46.40>
= obexctl:      Size: 1845808                                                  
                                                                               
     46.40>
= obexctl:      Filename: /lib/systemd/systemd                                 
                                                                               
     46.40>
= obexctl:      Session: /org/bluez/obex/client/session0                       
                                                                               
     46.40>
= obexctl: [^A^BCHG^A^B] Transfer /org/bluez/obex/client/session0/transfer0
Status: active                                                               
47.629711
= obexctl: [^A^BCHG^A^B] Transfer /org/bluez/obex/client/session0/transfer0
Transferred: 32737 (@32KB/s 00:55)                                           
47.630411
= obexctl: [^A^BCHG^A^B] Transfer /org/bluez/obex/client/session0/transfer0
Status: error                                                               
106.630035
= obexctl: [^A^BDEL^A^B] Transfer /org/bluez/obex/client/session0/transfer0 

So the transfer apparently didn't even start, with what system are you traying
to communicate to?

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[Bug 215594] Unable to transfer big files to Nokia N9 and Jolla phone

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https://bugzilla.kernel.org/show_bug.cgi?id=215594

--- Comment #2 from Paul Menzel (pmenzel+bugzilla.kernel.org@molgen.mpg.de) ---
Thank you for looking into this.

> So the transfer apparently didn't even start, with what system are you
> traying to communicate to?

Nokia N9 (MeeGo/Harmattan)

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[Bug 215594] Unable to transfer big files to Nokia N9 and Jolla phone

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https://bugzilla.kernel.org/show_bug.cgi?id=215594

--- Comment #3 from Paul Menzel (pmenzel+bugzilla.kernel.org@molgen.mpg.de) ---
Just to also document it here, commit 81be03e026dc (Bluetooth: RFCOMM: Replace
use of memcpy_from_msg with bt_skb_sendmmsg) introduced that regression, and
reverting this fixes the issue.

[1]:
https://lore.kernel.org/linux-bluetooth/def03073-3fab-3b34-6ffc-702bb1b3758f@leemhuis.info/T/#m04445e920610d42a9510d0f6d97afa5376e4a3ca
[2]:
https://lore.kernel.org/linux-bluetooth/20220208221911.57058-1-pmenzel@molgen.mpg.de/

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[Bug 215594] Unable to transfer big files to Nokia N9 and Jolla phone

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https://bugzilla.kernel.org/show_bug.cgi?id=215594

Paul Menzel (pmenzel+bugzilla.kernel.org@molgen.mpg.de) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |pmenzel+bugzilla.kernel.org
                   |                            |@molgen.mpg.de

--- Comment #4 from Paul Menzel (pmenzel+bugzilla.kernel.org@molgen.mpg.de) ---
Created attachment 300441
  --> https://bugzilla.kernel.org/attachment.cgi?id=300441&action=edit
Output of `btmon --write /dev/shm/btmon-trace-small-file.log`

btmon log, when sending a small file (3 bytes):

    $ more test.txt
    bt

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[Bug 215594] Unable to transfer big files to Nokia N9 and Jolla phone

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https://bugzilla.kernel.org/show_bug.cgi?id=215594

Tedd An (tedd.an@intel.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |tedd.an@intel.com

--- Comment #5 from Tedd An (tedd.an@intel.com) ---
I tested with latest BlueZ(HEAD:
https://git.kernel.org/pub/scm/bluetooth/bluez.git/commit/?id=002c0c9eda0052a834ddd4b63026f534b7d52f14)
without reverting the commits in
#3(https://bugzilla.kernel.org/show_bug.cgi?id=215594#c3) and RFCOMM worked
fine.
I tested both Windows 10 and MAC OS and was able to send and receive the files.

Please try it with the latest BlueZ and see if it makes any difference.

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[Bug 215594] Unable to transfer big files to Nokia N9 and Jolla phone

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https://bugzilla.kernel.org/show_bug.cgi?id=215594

--- Comment #6 from Paul Menzel (pmenzel+bugzilla.kernel.org@molgen.mpg.de) ---
Thank you for looking into this. Did you test with MeeGo/Harmattan or Sailfish
OS?

Also, it wouldn’t make a difference, as Linux’ no-regression-policy requires,
that the everything keeps working with the existing user space.

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[Bug 215594] Unable to transfer big files to Nokia N9 and Jolla phone

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https://bugzilla.kernel.org/show_bug.cgi?id=215594

--- Comment #7 from Paul Menzel (pmenzel+bugzilla.kernel.org@molgen.mpg.de) ---
(As written in the mailing list thread, with the Android phone Galaly M32 the
file transfer succeeded.)

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[Bug 215594] Unable to transfer big files to Nokia N9 and Jolla phone

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https://bugzilla.kernel.org/show_bug.cgi?id=215594

--- Comment #8 from Luiz Von Dentz (luiz.dentz@gmail.com) ---
(In reply to Paul Menzel from comment #6)
> Thank you for looking into this. Did you test with MeeGo/Harmattan or
> Sailfish OS?
> 
> Also, it wouldn’t make a difference, as Linux’ no-regression-policy
> requires, that the everything keeps working with the existing user space.

How about getting some logs from obexd then? Stop obexd.service and start with
obexd/src/obexd -dn

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[Bug 215594] Unable to transfer big files to Nokia N9 and Jolla phone

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https://bugzilla.kernel.org/show_bug.cgi?id=215594

--- Comment #9 from Paul Menzel (pmenzel+bugzilla.kernel.org@molgen.mpg.de) ---
Created attachment 300461
  --> https://bugzilla.kernel.org/attachment.cgi?id=300461&action=edit
Output of `/usr/libexec/bluetooth/obexd -dn`

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