NetBSD Problem Report #48780

From mlelstv@twitty.1st.de  Sat May  3 07:28:23 2014
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Date: Sat,  3 May 2014 09:28:09 +0200 (CEST)
From: mlelstv@serpens.de
Reply-To: mlelstv@serpens.de
To: gnats-bugs@NetBSD.org
Subject: bthcid gets killed by Broken pipe
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>Number:         48780
>Category:       bin
>Synopsis:       bthcid gets killed by Broken pipe
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat May 03 07:30:00 +0000 2014
>Last-Modified:  Sat Jun 16 23:45:00 +0000 2018
>Originator:     Michael van Elst
>Release:        NetBSD 6.99.40
>Organization:

>Environment:


System: NetBSD tazz 6.99.40 NetBSD 6.99.40 (TAZZ) #32: Mon Apr 21 23:38:54 CEST 2014 mlelstv@pussyfoot:/home/netbsd-current/obj.amd64/home/netbsd-current/src/sys/arch/amd64/compile/TAZZ amd64
Architecture: x86_64
Machine: amd64
>Description:
When trying to pair a device using

btpin -P -r -a sphero-wwr

this fails and btpin finally exits with "Link severed". Sometimes
however the bthcid daemon gets killed.

A ktrace reveals:

  4114      1 bthcid   accept(0x6, 0x7f7fffffdae0, 0x7f7fffffdadc) = 7
  4114      1 bthcid   ioctl(0x7, FIONBIO, 0x7f7fffffdadc) = 0
       "\^A\0\0\0"
  4114      1 bthcid   __gettimeofday50(0x7f7fffffc860, 0) = 0
  4114      1 bthcid   getpid()                    = 4114, 5016
  4114      1 bthcid   writev(0x2, 0x7f7fffffc8b0, 0x6) = 25
       "bthcid[4114]: New Client\n"
[...]
  4114      1 bthcid   sendto(0x7, 0x7f7fffffd9e0, 0xd, 0, 0, 0) Err#32 EPIPE
  4114      1 bthcid   SIGPIPE SIG_DFL

Apparently the btpin client exits before bthcid can return some
information. The attempt then causes the SIGPIPE.

>How-To-Repeat:
Difficult, you need a bluetooth device that times out when pairing.

>Fix:

>Audit-Trail:
From: David Holland <dholland-bugs@netbsd.org>
To: gnats-bugs@NetBSD.org
Cc: 
Subject: Re: bin/48780: bthcid gets killed by Broken pipe
Date: Sat, 16 Jun 2018 23:41:30 +0000

 On Sat, May 03, 2014 at 07:30:00AM +0000, mlelstv@serpens.de wrote:
  > When trying to pair a device using
  > 
  > btpin -P -r -a sphero-wwr
  > 
  > this fails and btpin finally exits with "Link severed". Sometimes
  > however the bthcid daemon gets killed.
  > 
  > A ktrace reveals: [...]

 Nobody ever answered this; is it still current?

 -- 
 David A. Holland
 dholland@netbsd.org

>Unformatted:

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