audio: Fix crash in a2dp_discover Sample stack trace: 0x0000567c394e4c6b (bluetoothd - a2dp.c: 270) setup_cb_free 0x0000567c394e4a94 (bluetoothd - a2dp.c: 2884) a2dp_discover 0x0000567c394e3c03 (bluetoothd - sink.c: 275) sink_setup_stream 0x0000567c394e3d4f (bluetoothd - sink.c: 299) sink_connect 0x0000567c39535183 (bluetoothd - service.c: 294) btd_service_connect 0x0000567c39539f68 (bluetoothd - device.c: 2006) connect_next 0x0000567c3954086d (bluetoothd - device.c: 2060) service_state_changed 0x0000567c39534efb (bluetoothd - service.c: 111) change_state 0x0000567c3953559c (bluetoothd - service.c: 0) btd_service_connecting_complete 0x0000567c39534a5c (bluetoothd - profile.c: 1641) record_cb 0x0000567c395197cd (bluetoothd - sdp-client.c: 298) connect_watch 0x00007b14bc8034f6 (libglib-2.0.so.0 - gmain.c: 3337) g_main_context_dispatch 0x00007b14bc803801 (libglib-2.0.so.0 - gmain.c: 4131) g_main_context_iterate 0x00007b14bc803a7d (libglib-2.0.so.0 - gmain.c: 4329) g_main_loop_run 0x0000567c39566af1 (bluetoothd - mainloop-glib.c: 79) mainloop_run 0x0000567c39566ddb (bluetoothd - mainloop-notify.c: 201) mainloop_run_with_signal 0x0000567c3954bf4c (bluetoothd - main.c: 1222) main 0x00007b14bc579797 (libc.so.6 - libc-start.c: 332) __libc_start_main 0x0000567c394df449 (bluetoothd) _start 0x00007ffd70145737 This could be triggered from a2dp_discover -> avdtp_discover -> send_request -> send_req -> l2cap_connect (return error) -> avdtp_set_state (to disconnect state)-> channel_remove -> channel_free -> finalize_setup_errno (discover cb is freed) -> error handling all the way back to a2dp_discover -> a2dp_discover (discover cb is freed again, crashed!). The fix is to attach cb with setup after avdtp_discover success. Suggested-by: luiz.dentz@gmail.com Reviewed-by: Archie Pusaka <apusaka@chromium.org>

Diffstat

1 files changed, 20 insertions(+), 6 deletions(-)