[FS#588] openvpn-mbedtls crash on mpc85xx with signal 4 (SIGILL)

[LEDE Bugs]

The following task has a new comment added:

FS#588 - openvpn-mbedtls crash on mpc85xx with signal 4 (SIGILL)
User who did this - Andy McClements (ajmcc)

----------
Hi, not sure if this is the right thing to do but here goes anyway.

I'm running a TL-WDR4900 on lede-17.01.0-r3205-59508e3-mpc85xx-generic-tl-wdr4900-v1-squashfs-sysupgrade.bin.

I find that 'curl' fails with 'Illegal Instruction' when making a https transfer, but is fine with http. Syslog:

Mar 29 17:11:33  10.0.20.4 c-fw kernel: [2073277.579797] curl[14801]: unhandled signal 4 at b7d2b408 nip b7d2b408 lr b7d19af8 code 30001

I feel the finger may be pointing toward a problem with libembedtls on mpc85xx.

The packages on my firewall:

curl - 7.52.1-3
libmbedtls - 2.4.2-1
----------

More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=588#comment2279