diff options
| -rw-r--r-- | erts/emulator/beam/beam_bp.c | 3 | ||||
| -rw-r--r-- | erts/emulator/beam/erl_nif.c | 2 | ||||
| -rw-r--r-- | erts/emulator/test/trace_local_SUITE.erl | 8 |
3 files changed, 12 insertions, 1 deletions
diff --git a/erts/emulator/beam/beam_bp.c b/erts/emulator/beam/beam_bp.c index 8489897d3a..920c8b1ed0 100644 --- a/erts/emulator/beam/beam_bp.c +++ b/erts/emulator/beam/beam_bp.c @@ -858,7 +858,8 @@ erts_bif_trace(int bif_index, Process* p, Eterm* args, BeamInstr* I) if (flags & MATCH_SET_RX_TRACE) { erts_trace_return(p, ep->code, result, &ERTS_TRACER(p)); } - if (flags & MATCH_SET_RETURN_TO_TRACE) { + if (flags & MATCH_SET_RETURN_TO_TRACE && + IS_TRACED_FL(p, F_TRACE_RETURN_TO)) { /* can only happen if(local)*/ if (applying) { /* Apply of BIF, cp is in calling function */ diff --git a/erts/emulator/beam/erl_nif.c b/erts/emulator/beam/erl_nif.c index 23931f0e54..c6127a4967 100644 --- a/erts/emulator/beam/erl_nif.c +++ b/erts/emulator/beam/erl_nif.c @@ -3502,6 +3502,7 @@ Eterm erts_nif_call_function(Process *p, Process *tracee, struct enif_environment_t env; ErlHeapFragment *orig_hf = MBUF(p); ErlOffHeap orig_oh = MSO(p); + Eterm *orig_htop = HEAP_TOP(p); ASSERT(is_internal_pid(p->common.id)); MBUF(p) = NULL; clear_offheap(&MSO(p)); @@ -3523,6 +3524,7 @@ Eterm erts_nif_call_function(Process *p, Process *tracee, /* restore original heap fragment list */ MBUF(p) = orig_hf; MSO(p) = orig_oh; + HEAP_TOP(p) = orig_htop; } else { /* Nif call was done without a process context, so we create a phony one. */ diff --git a/erts/emulator/test/trace_local_SUITE.erl b/erts/emulator/test/trace_local_SUITE.erl index 74c05f24e0..c297acd78b 100644 --- a/erts/emulator/test/trace_local_SUITE.erl +++ b/erts/emulator/test/trace_local_SUITE.erl @@ -439,6 +439,14 @@ return_test() -> ?RT(?MODULE,slave,2), shutdown(), ?NM, + + %% Test a regression where turning off return_to tracing + %% on yourself would cause a segfault. + Pid = setup([call,return_to]), + erlang:trace_pattern({'_','_','_'},[],[local]), + apply_slave(erlang,trace,[Pid, false, [all]]), + shutdown(), + ok. on_and_off_test() -> |