> Ktrace it
As mentioned, that doesn't work (well, it works, which is the problem).
> there are 3 err() calls in pthread__init()
Starting with
#8 0x000071b551460ac0 in err () from /usr/lib/libc.so.12
#9 0x000071b55240c47b in pthread__init () from /usr/lib/libpthread.so.1
I disassembled a bit before 0x000071b55240c47b, the relevant part being
0x71b55240c468 <pthread__init+1265>: lea 0x56a(%rip),%rsi #
0x71b55240c9d9
0x71b55240c46f <pthread__init+1272>: mov $0x1,%edi
0x71b55240c474 <pthread__init+1277>: xor %eax,%eax
0x71b55240c476 <pthread__init+1279>: callq 0x71b552405eb0 <err@plt>
0x71b55240c47b <pthread__hashlock>: mov %rdi,%rax
and x/s 0x71b55240c9d9 says
0x71b55240c9d9: "mprotect stack"
So what's going wrong?
