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From: Christian Hewitt <christianshewitt@gmail.com>
To: wireguard@lists.zx2c4.com
Subject: "bus error" when generating public key
Date: Fri, 7 Dec 2018 15:46:53 +0400	[thread overview]
Message-ID: <2DE53C12-A1B1-4E06-9391-7F64BC7328A2@gmail.com> (raw)

I’m working to add WireGuard support to an embedded distro that runs on a mix of x86 and ARM hardware. I’m using 4.19.7 as the kernel base, cross compiling using a well proven toolchain and build-system. The kernel defconfig can be seen here:

https://github.com/chewitt/LibreELEC.tv/blob/amlogic/projects/Amlogic/linux/linux.aarch64.conf

I see no compile errors when building the kernel module or wireguard tools. The kernel module loads without errors and ‘wg’ can generate private and preshared keys, but when creating a public key from the private key ‘wg pubkey < /path/to/privatekey' fails with “Bus error” and no key is generated.

dmesg from the device after the failure: http://ix.io/1vrb

modinfo wireguard
filename:       /lib/modules/4.19.7/kernel/net/wireguard/wireguard.ko
alias:          net-pf-16-proto-16-family-wireguard
alias:          rtnl-link-wireguard
version:        0.0.20181119
author:         Jason A. Donenfeld <Jason@zx2c4.com>
description:    WireGuard secure network tunnel
license:        GPL v2
srcversion:     1CFE12F8E5CF00DB842FD50
depends:        ipv6,udp_tunnel,ip6_udp_tunnel
intree:         Y
name:           wireguard
vermagic:       4.19.7 SMP preempt mod_unload aarch64

ldd /usr/bin/wg
	libc.so.6 => /usr/lib/libc.so.6 (0xf7771000)
	/lib/ld-linux-armhf.so.3 => /usr/lib/ld-linux-armhf.so.3 (0xf78ad000)

I’m not a coding developer, but I’m able to follow instructions to a reasonable level if there is some kind of debugging or additional output that would be useful.

Can you spot the problem? Any suggestions?

Christian


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             reply	other threads:[~2018-12-07 23:24 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-12-07 11:46 Christian Hewitt [this message]
2018-12-10  7:25 ` Ole-Morten Duesund

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