ASSERT signal.c:4224 in prof_pcs nativeexec test

http://dynamorio.org/CDash/testDetails.php?test=144053&build=13931 Test: prof_pcs,thread_private|common.nativeexec_exe (Failed) Build: debug-internal-32 (X64.Fedora22.gcc531.Ancalagon) on 2016-11-01 03:15:29 Repository revision: 2c6ae55e

calling via IAT-style call
nativeexec.dll:import_me1(57)
calling via PLT-style call
nativeexec.dll:import_me2(37)
calling via funky ind call
nativeexec.dll:import_me3(17)
calling nested native
nativeexec.exe:print_int(42)
calling cross-module unwinder
before longjmp, 1
after longjmp
calling indirect ret_imm
 -> 40
calling loop_test
<Application /work/dr/nightly/run/build_debug-internal-32/suite/tests/bin/common.nativeexec (25332).  Internal Error: DynamoRIO debug check failure: /work/dr/nightly/src/core/unix/signal.c:4224 tr == NULL || tr->under_dynamo_control || IS_CLIENT_THREAD(dcontext)
(Error occurred @609 frags)
version 6.2.17106, custom build
-no_dynamic_options -prof_pcs -code_api -stderr_mask 12 -stack_size 56K -max_elide_jmp 0 -max_elide_call 0 -no_shared_bbs -no_shared_traces -thread_private -no_private_ib_in_tls -no_atomic_inlined_linking -no_shared_trace_ibl_routine -no_finite_bb_cache -no_finite_trace_cache -no_inline_ignored_syscalls -native_exec_defa
0x505d2950 0x710e5a52
0x505d2a84 0x712700eb
0x505d2af0 0x7123fa68
0xff832c5c 0x711b670d
0xff832c78 0x711b6d8c
0xff832c94 0x7123fb3c
0xff832dfc 0x08049474
0xff832e08 0x7123faa7>