Segfault running usr_study client application

[PedroBorges9]

Hello I've managed to compile and install Open-TEE on a Ubuntu VM.
I've managed to run conn_test successfully but the same is not true for the usr_study client application.
When I run it, the terminal output returns TEE_ERROR_TARGET_DEAD and I get a segfault on syslog:

Jul 19 11:36:56 ubuntu libuser_study.so/opt/OpenTee/lib/TAs/libuser_study.so: ../../TAs/usr_study_ta/usr_study_ta.c:TA_CreateEntryPoint:349 Calling the create entry point
Jul 19 11:36:56 ubuntu libuser_study.so/opt/OpenTee/lib/TAs/libuser_study.so: ../../TAs/usr_study_ta/usr_study_ta.c:TA_OpenSessionEntryPoint:366 Calling the Open session entry point
Jul 19 11:36:56 ubuntu kernel: [33768.564430] libuser_study.s[18408]: segfault at 7fa49eefdeb7 ip 00007fa39e63f4b8 sp 00007fa39d435e58 error 4 in libc-2.23.so[7fa39e4f2000+1c0000]

Also, I've tried building a simple client and trusted application by myself. I've followed the structure of usr_study and I'm getting the same segfault. It's related to a memmove on line 236 of usr_study_ta.c:

TEE_MemMove(new_trans->message, params[1].memref.buffer, ~params[1].memref.size);

[TanelDettenborn]

Hi PedroBorges9,

I think that usr_study client/ta are working just fine :) Segfault is
expected if you are not fixed the TA. More information about user study:
http://open-tee.github.io/userstudy/

-Tanel

2016-07-19 11:50 GMT+01:00 PedroBorges9 [email protected]:

Hello I've managed to compile and install Open-TEE on a Ubuntu VM.
I've managed to run conn_test successfully but the same is not true for
the usr_study client application.
When I run it, the terminal output returns TEE_ERROR_TARGET_DEAD and I get
a segfault on syslog:

Jul 19 11:36:56 ubuntu
libuser_study.so/opt/OpenTee/lib/TAs/libuser_study.so:
../../TAs/usr_study_ta/usr_study_ta.c:TA_CreateEntryPoint:349 Calling the
create entry point
Jul 19 11:36:56 ubuntu
libuser_study.so/opt/OpenTee/lib/TAs/libuser_study.so:
../../TAs/usr_study_ta/usr_study_ta.c:TA_OpenSessionEntryPoint:366 Calling
the Open session entry point
Jul 19 11:36:56 ubuntu kernel: [33768.564430] libuser_study.s[18408]:
segfault at 7fa49eefdeb7 ip 00007fa39e63f4b8 sp 00007fa39d435e58 error 4 in
libc-2.23.so[7fa39e4f2000+1c0000]

Also, I've tried building a simple client and trusted application by
myself. I've followed the structure of usr_study and I'm getting the same
segfault. It's related to a memmove on line 236 of usr_study_ta.c:

TEE_MemMove(new_trans->message, params[1].memref.buffer,
~params[1].memref.size);

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[PedroBorges9]

Oh ok I didn't realise that the user_study purposely had bugs for didactic purpose. Would it be possible to send me the code without the bugs as I'm not a C expert much less a GDB expert :)?

[TanelDettenborn]

No problem, but i will do that a bit later because I do not have the
"solution" TA.

-Tanel

2016-07-19 12:07 GMT+01:00 PedroBorges9 [email protected]:

Oh ok I didn't realise that the user_study purposely had bugs for didactic
purpose. Would it be possible to send me the code without the bugs as I'm
not a C expert much less a GDB expert :)?

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[PedroBorges9]

I think I got my CA working but still have errors on the usr_study.
Later will do fine. Thanks