842711 - Bluetooth: SIGSEGV in DBUS with DisconnectAllConnections

Status: RESOLVED DUPLICATE of bug 841984

(Core :: DOM: Device Interfaces, defect)

Description

[Gregor Wagner [:gwagner]]

Maybe a dup of bug 841984?
Bug 841984 happens during a request and here we are disconnecting.

Current b2g18 trunk.

process 2894:   D-Bus not compiled with backtrace support so unable to print a backtrace

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 2894.3159]
__libc_android_abort () at bionic/libc/unistd/abort.c:82
82	    *((char*)0xdeadbaad) = 39;
(gdb) bt
#0  __libc_android_abort () at bionic/libc/unistd/abort.c:82
#1  0x432ee192 in _dbus_abort () at external/dbus/dbus/dbus-sysdeps.c:94
#2  0x432d5cf8 in _dbus_warn_check_failed (
    format=0x432f8697 "arguments to %s() were incorrect, assertion \"%s\" failed in file %s line %d.\nThis is normally a bug in some application using the D-Bus library.\n")
    at external/dbus/dbus/dbus-internals.c:302
#3  0x432e1660 in dbus_message_new_method_call (destination=<value optimized out>, path=0x48cb2d54 "", 
    interface=<value optimized out>, method=0x426378fc "DisconnectAllConnections")
    at external/dbus/dbus/dbus-message.c:1214
#4  0x41b312f8 in mozilla::ipc::dbus_func_args_timeout_valist (conn=0x49530ce0, timeout_ms=-1, 
    err=0x4abd34b0, path=0x48cb2d54 "", ifc=0x42637260 "org.bluez.Adapter", 
    func=0x426378fc "DisconnectAllConnections", first_arg_type=0, args=...)
    at /Volumes/2mac/gaia/b2g18/ipc/dbus/DBusUtils.cpp:205
#5  0x41b31444 in mozilla::ipc::dbus_func_args (conn=0x49530ce0, path=0x48cb2d54 "", 
    ifc=0x42637260 "org.bluez.Adapter", func=0x426378fc "DisconnectAllConnections", first_arg_type=0)
    at /Volumes/2mac/gaia/b2g18/ipc/dbus/DBusUtils.cpp:261
#6  0x4139a202 in mozilla::dom::bluetooth::BluetoothDBusService::DisconnectAllAcls (this=0x43ee3d80, 
    aAdapterPath=...) at /Volumes/2mac/gaia/b2g18/dom/bluetooth/linux/BluetoothDBusService.cpp:797
#7  0x4139c180 in mozilla::dom::bluetooth::BluetoothDBusService::StopInternal (this=0x43ee3d80)
    at /Volumes/2mac/gaia/b2g18/dom/bluetooth/linux/BluetoothDBusService.cpp:1637
#8  0x4139ff88 in mozilla::dom::bluetooth::BluetoothGonkService::StopInternal (this=0x43ee3d80)
    at /Volumes/2mac/gaia/b2g18/dom/bluetooth/gonk/BluetoothGonkService.cpp:143
#9  0x41385e0a in mozilla::dom::bluetooth::BluetoothService::ToggleBtTask::Run (this=0x4abd3490)
    at /Volumes/2mac/gaia/b2g18/dom/bluetooth/BluetoothService.cpp:183
#10 0x41b8164c in nsThread::ProcessNextEvent (this=0x4959eb80, mayWait=true, result=0x48cb2e97)
---Type <return> to continue, or q <return> to quit---
    at /Volumes/2mac/gaia/b2g18/xpcom/threads/nsThread.cpp:620
#11 0x41b3b38a in NS_ProcessNextEvent_P (thread=0x4959eb80, mayWait=true)
    at /Volumes/2mac/gaia/b2g18/nooptunagibuild/xpcom/build/nsThreadUtils.cpp:237
#12 0x41b80a6e in nsThread::ThreadFunc (arg=0x4959eb80)
    at /Volumes/2mac/gaia/b2g18/xpcom/threads/nsThread.cpp:258
#13 0x403aa254 in _pt_root (arg=0x4c162eb0)
    at /Volumes/2mac/gaia/b2g18/nsprpub/pr/src/pthreads/ptthread.c:156
#14 0x400f5e18 in __thread_entry (func=0x403aa19d <_pt_root>, arg=0x4c162eb0, tls=<value optimized out>)
    at bionic/libc/bionic/pthread.c:217
#15 0x400f596c in pthread_create (thread_out=<value optimized out>, attr=0xbe9bea28, 
    start_routine=0x403aa19d <_pt_root>, arg=0x4c162eb0) at bionic/libc/bionic/pthread.c:357
#16 0x00000000 in ?? ()

Comment 1

[Shawn Huang [:shawnjohnjr][:shuang] (as a happy gecko contributor)]

It looks like duplicated issue of Bug 841984. dbus connection broken first after that if user tries to turn off Bluetooth, this bug could be hitted.