When set PairableTimeout to non-zero and run bluetoothd, and then
repeat attaching and detaching a bluetooth dongle, bluetoothd
frequently do segfault as below:
==6583== Process terminating with default action of signal 11 (SIGSEGV)
==6583== Bad permissions for mapped region at address 0x4D3AC0
==6583== at 0x4DBE27: mgmt_send (mgmt.c:592)
==6583== by 0x48FFC2: set_mode (adapter.c:601)
==6583== by 0x490471: pairable_timeout_handler (adapter.c:649)
==6583== by 0x50CDAB2: ??? (in /lib/x86_64-linux-gnu/libglib-2.0.so.0.4800.2)
==6583== by 0x50CD049: g_main_context_dispatch (in /lib/x86_64-linux-gnu/libglib-2.0.so.0.4800.2)
==6583== by 0x50CD3EF: ??? (in /lib/x86_64-linux-gnu/libglib-2.0.so.0.4800.2)
==6583== by 0x50CD711: g_main_loop_run (in /lib/x86_64-linux-gnu/libglib-2.0.so.0.4800.2)
==6583== by 0x40CD28: main (main.c:781)
At another time, syslog and objdump of bluetoothd outputted below:
Sep 14 13:43:46 fushimi bluetoothd[14192]: src/adapter.c:adapter_free() 0x2374350
Sep 14 13:44:08 fushimi bluetoothd[14192]: src/adapter.c:set_mode() sending set mode command for index 32749
Sep 14 13:44:09 fushimi bluetoothd[14192]: src/adapter.c:set_mode() sending set mode command for index 0
Sep 14 13:44:09 fushimi kernel: [18030.384367] bluetoothd[14192]: segfault at c0 ip 00000000004dbe31 sp 00007fff19f2ca40 error 4 in bluetoothd[400000+147000]
if (mgmt->next_request_id < 1)
4dbe31: 8b 43 40 mov 0x40(%rbx),%eax
4dbe34: 48 83 05 9c 75 2f 00 addq $0x1,0x2f759c(%rip) # 7d33d8 <__gcov0.mgmt_send+0x18>
---
src/adapter.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/src/adapter.c b/src/adapter.c
index a571b18..36562c0 100644
--- a/src/adapter.c
+++ b/src/adapter.c
@@ -662,7 +662,8 @@ static void trigger_pairable_timeout(struct btd_adapter *adapter)
return;
if (adapter->pairable_timeout > 0)
- g_timeout_add_seconds(adapter->pairable_timeout,
+ adapter->pairable_timeout_id =
+ g_timeout_add_seconds(adapter->pairable_timeout,
pairable_timeout_handler, adapter);
}
@@ -4409,6 +4410,11 @@ static void adapter_free(gpointer user_data)
DBG("%p", adapter);
+ if (adapter->pairable_timeout_id > 0) {
+ g_source_remove(adapter->pairable_timeout_id);
+ adapter->pairable_timeout_id = 0;
+ }
+
if (adapter->load_ltks_timeout > 0)
g_source_remove(adapter->load_ltks_timeout);
--
2.7.4
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