Hi, I can confirm the problem. I have it on all my raspberry pi 2s.
Program received signal SIGSEGV, Segmentation fault. nettle_yarrow256_update (ctx=0x74291b98, source_index=<optimized out>, entropy=128, length=32, data=0x7efff4cc "Ï\351\352i\204l\310\354\311\002Cw\030\266\177\005v'w\311\004\243{\340\253\311\377\003\a", <incomplete sequence \313>) at yarrow256.c:264 264 yarrow256.c: No such file or directory. (gdb) bt #0 nettle_yarrow256_update (ctx=0x74291b98, source_index=<optimized out>, entropy=128, length=32, data=0x7efff4cc "Ï\351\352i\204l\310\354\311\002Cw\030\266\177\005v'w\311\004\243{\340\253\311\377\003\a", <incomplete sequence \313>) at yarrow256.c:264 #1 0x742699ec in ?? () from /usr/lib/arm-linux-gnueabihf/libgnutls-deb0.so.28 Backtrace stopped: previous frame identical to this frame (corrupt stack?) So it looks like it may as well be in libnettle. I have the following versions installed: ii libnettle4:armhf 2.7.1-5+deb8u1 armhf low level cryptographic library (symmetric and one-way cryptos) ii libnettle6:armhf 3.3-1 armhf low level cryptographic library (symmetric and one-way cryptos) Folkert van Heusden