I built BlueZ 5.45 from source on Ubuntu 16.04 and ran the daemon in
the foreground with
$ sudo src/bluetoothd -d -n
I then ran a program that uses the ConnectProfile API to connect to
another device. It succeeds most of the time but occasionally crashes
with a segfault. Here is the stack trace:
#0 sprintf (__fmt=<optimized out>, __s=<optimized out>) at
/usr/include/x86_64-linux-gnu/bits/stdio2.h:33
#1 ba2str (ba=0x5f46305f43445f52, str=str@entry=0x7fffdeb4c350 "") at
lib/bluetooth.c:79
#2 0x0000000000469ac3 in update_bredr_services
(req=req@entry=0x23a59c0, recs=recs@entry=0x23a60e0)
at src/device.c:4305
#3 0x000000000046a1d2 in browse_cb (recs=0x23a60e0, err=0,
user_data=0x23a59c0) at src/device.c:4536
#4 0x0000000000447403 in search_completed_cb (type=<optimized out>,
status=<optimized out>, rsp=<optimized out>,
size=<optimized out>, user_data=0x23a0810) at src/sdp-client.c:205
#5 0x000000000047a88d in sdp_process (session=<optimized out>) at
lib/sdp.c:4354
#6 0x0000000000447545 in search_process_cb (chan=<optimized out>,
cond=<optimized out>, user_data=0x23a0810)
at src/sdp-client.c:230
#7 0x00007f8cbe0b704a in g_main_context_dispatch () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#8 0x00007f8cbe0b73f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9 0x00007f8cbe0b7712 in g_main_loop_run () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x000000000040b38e in main (argc=1, argv=0x7fffdeb4e898) at src/main.c:708
The call to ConnectProfile is always to the same remote device
address, which is paired and trusted.
I tried it with BlueZ 5.44 and got a crash similar to this report:
http://marc.info/?l=linux-bluetooth&m=149286683912995&w=2
Here is the stack trace from 5.44:
#0 browse_cb (recs=0xc78d90, err=0, user_data=0xc77510) at src/device.c:4523
#1 0x0000000000447423 in search_completed_cb (type=<optimized out>,
status=<optimized out>, rsp=<optimized out>,
size=<optimized out>, user_data=0xc6dcc0) at src/sdp-client.c:205
#2 0x000000000047a65d in sdp_process (session=<optimized out>) at
lib/sdp.c:4354
#3 0x0000000000447565 in search_process_cb (chan=<optimized out>,
cond=<optimized out>, user_data=0xc6dcc0)
at src/sdp-client.c:230
#4 0x00007f1cfa74b04a in g_main_context_dispatch () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5 0x00007f1cfa74b3f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6 0x00007f1cfa74b712 in g_main_loop_run () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#7 0x000000000040b38e in main (argc=1, argv=0x7ffd26bdf7f8) at src/main.c:708
This problem has not occurred yet with BlueZ 5.43.
Let me know if you need any other information.
Thanks,
Mark
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