Re: test-mesh-crypto segfaults

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Also, make sure your ELL version is at least Release 0.26, from 30-Oct-2019.

On Mon, 2019-11-04 at 22:11 +0000, Gix, Brian wrote:
> Hi Stefan,
> 
> On Mon, 2019-11-04 at 22:16 +0100, Stefan Seyfried wrote:
> > Hi,
> > 
> > test-mesh-crypto segfaults for me.
> > 
> > abuild@strolchi:~/rpmbuild/BUILD/bluez-5.52> gdb unit/test-mesh-crypto
> > 
> > [....]
> > 
> > [8.6.2 Service Data using Node Identity]
> > ID Resolving Key     = 84396c435ac48560b5965385253e210c
> >                        84396c435ac48560b5965385253e210c => PASS
> > Hash Input           = 00000000000034ae608fbbc1f2c61201
> >                        00000000000034ae608fbbc1f2c61201 => PASS
> > Hash                 = 00861765aefcc57b
> >                        00861765aefcc57b => PASS
> > Mesh ID Beacon       = 0100861765aefcc57b34ae608fbbc1f2c6
> >                        0100861765aefcc57b34ae608fbbc1f2c6 => PASS
> > 
> 
> This is very strange.  The unit test looks like it has completed successfully (at least from what you copy-
> pasted).  That test 8.6.2 is the final test, and it looks happy.  Can you verify for me that all the other
> tests completed successfully?
> 
> There is a *small* chance that you could be running on an old kernel:  Kernels version 4.8 and before had a 
> bug in the AEAD crypto code that made mesh code (including this unit test) inoperable...  But this should
> show
> up *first* in one of the earlier tests within this unit test... so look for any FAIL designations.
> 
> The other thing about this particular test is that it is the *only* bluez unit test which is based on ELL
> (Embedded Linux Library) instead of GLIB.
> 
> Are you running from an installed ELL when compiling bluez, or do you have ELL in a "peer directory"... For
> instance:
> 
> .../work/ell
> .../work/bluez 
> 
> If you have the ELL source code available, please try running:
> ell % make check
> 
> paying particular attention to the output of:
> unit/test-cipher
> 
> If unit/test-cipher in ELL passes, then unit/test-mesh-crypto in BLUEZ should pass.
> 
> 
> > Program received signal SIGSEGV, Segmentation fault.
> > 0x00007ffff7e874ae in mem2chunk_check () from /lib64/libc.so.6
> > (gdb) bt
> > #0  0x00007ffff7e874ae in mem2chunk_check () from /lib64/libc.so.6
> > #1  0x00007ffff7e8b6af in free_check () from /lib64/libc.so.6
> > #2  0x0000555555557c98 in l_free (ptr=<optimized out>) at ell/util.c:136
> > #3  l_queue_clear (queue=0x55555556d010, destroy=0x555555557c60
> > <l_free>) at ell/queue.c:107
> > #4  0x0000555555557210 in _sub_D_65535_1.7021 () at ell/cipher.c:319
> > #5  0x00007ffff7fe2c13 in _dl_fini () from /lib64/ld-linux-x86-64.so.2
> > #6  0x00007ffff7e3f877 in __run_exit_handlers () from /lib64/libc.so.6
> > #7  0x00007ffff7e3fa2c in exit () from /lib64/libc.so.6
> > #8  0x00007ffff7e27e12 in __libc_start_main () from /lib64/libc.so.6
> > #9  0x0000555555557b8a in _start () at ../sysdeps/x86_64/start.S:120
> > 
> > this is reproducible here, I'm disabling this test for now in the
> > openSUSE package build.
> > 
> > Best regards




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