Smartcard + pkcs11 = segmentation fault...

Sven Geggus lists at
Thu Mar 1 09:52:26 CET 2012

Nikos Mavrogiannopoulos <nmav at> wrote:

> Could you try using valgrind or gdb to pinpoint the crash?

Hm, looks like the proprietary library has some issues, but also does gnutls:

(proprietary library warnings about uninitialised values skipped)

Object 0:
	URL: pkcs11:library-description=Cryptographic%20Token%20Interface;library-manufacturer=A.E.T.%20Europe%20B.V.;model=3384110107000000;manufacturer=A.E.T.%20Europe%20B.V.;serial=00113C3800009B09;token=Fraunhofer-Smartcard;object=Secude%20Token%20ID;object-type=data
	Type: Data
	Label: Secude Token ID
==19018== Invalid read of size 1
==19018==    at 0x4E653CF: _gnutls_bin2hex (gnutls_str.c:443)
==19018==    by 0x4E75D41: pkcs11_get_info (pkcs11.c:409)
==19018==    by 0x40424D: pkcs11_list (pkcs11.c:193)
==19018==    by 0x403750: main (p11tool.c:135)
==19018==  Address 0x0 is not stack'd, malloc'd or (recently) free'd
==19018== Process terminating with default action of signal 11 (SIGSEGV)
==19018==  Access not within mapped region at address 0x0
==19018==    at 0x4E653CF: _gnutls_bin2hex (gnutls_str.c:443)
==19018==    by 0x4E75D41: pkcs11_get_info (pkcs11.c:409)
==19018==    by 0x40424D: pkcs11_list (pkcs11.c:193)
==19018==    by 0x403750: main (p11tool.c:135)
==19018==  If you believe this happened as a result of a stack
==19018==  overflow in your program's main thread (unlikely but
==19018==  possible), you can try to increase the size of the
==19018==  main thread stack using the --main-stacksize= flag.
==19018==  The main thread stack size used in this run was 8388608.
==19018== HEAP SUMMARY:
==19018==     in use at exit: 551,735 bytes in 1,892 blocks
==19018==   total heap usage: 14,940 allocs, 13,048 frees, 8,311,394 bytes
==19018== LEAK SUMMARY:
==19018==    definitely lost: 4 bytes in 1 blocks
==19018==    indirectly lost: 0 bytes in 0 blocks
==19018==      possibly lost: 288 bytes in 1 blocks
==19018==    still reachable: 551,443 bytes in 1,890 blocks
==19018==         suppressed: 0 bytes in 0 blocks
==19018== Rerun with --leak-check=full to see details of leaked memory
==19018== For counts of detected and suppressed errors, rerun with: -v
==19018== ERROR SUMMARY: 34 errors from 15 contexts (suppressed: 25 from 7)

> Could you also try whether that issue occurs in gnutls 3.0.14?

Jepp, I just compiled gnutls-3.0.14 from sources. Same Problem here.

BTW "p11tool --login --list-certs" seems to work.



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