Valgrind crash on Texas Instrument AM3352 (armv7le) and QNX

Hi Valgrind community,

I have 2 different boards running QNX 6.5 and mounting the exact same file system.
One board is based on an NXP iMX53 SoC and the other one on a Texas Instrument AM3352.
Since both SoC share the same instruction set (Cortex A8 - amv7le), they can run the same binaries.

However, whereas Valgrind 3.10.1 is working perfectly on the iMX53, it crashes on the AM3352 :

pendant:/bin>/usr/bin/valgrind --tool=memcheck --allow-mismatched-debuginfo=yes --extra-debuginfo-path=/usr/lib/debug/ echo
==1863697== Memcheck, a memory error detector
==1863697== Copyright (C) 2002-2013, and GNU GPL'd, by Julian Seward et al.
==1863697== Using Valgrind-3.10.1 and LibVEX; rerun with -h for copyright info
==1863697== Command: echo
==1863697==
==1863697==
==1863697== Process terminating with default action of signal 11 (SIGSEGV): dumping core
==1863697==  Bad permissions for mapped region at address 0x245C
==1863697==    at 0x1E4CC: mprotect (mprotect.c:33 in /proc/boot/libc.so.3)
==1863697==    by 0x25B03: _band_get_aligned (band.c:450 in /proc/boot/libc.so.3)
==1863697==    by 0x77383: ??? (in /proc/boot/libc.so.3)
==1863697==
==1863697== HEAP SUMMARY:
==1863697==     in use at exit: 0 bytes in 0 blocks
==1863697==   total heap usage: 0 allocs, 0 frees, 0 bytes allocated
==1863697==
==1863697== All heap blocks were freed -- no leaks are possible
==1863697==
==1863697== For counts of detected and suppressed errors, rerun with: -v
==1863697== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)
Memory fault

It always crashes the same way, whatever the binary I analyse.

I am clueless, I don't understand how it can work on iMX53 and fail on AM3352 with the same file system (same binaries, same libs, same scripts, same conf ...).
Does somebody have an idea ?

Best regards,

Cédric