Segmentation fault about zerotier-openwrt HOT 15 CLOSED

@miegl thanks, I can reproduce the error now. :-)

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Hm, do you use LEDE 17.01.4? I haven't tested any older releases.
I don't have that platform (armv7l) available to reproduce the problem.

If you don't mind using a development build, you should use images from here https://downloads.openwrt.org/snapshots/targets/
Then do "opkg update" and "opkg install zerotier".

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Getting the same exact error on latest snapshot build.

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The older zerotier 1.1.14-4 package from 17.01.4 repo seems to be working fine.

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Can you reproduce the problem? If yes, how? What device is affected in your case?

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root@gateway:~# opkg install zerotier
Installing zerotier (1.2.4-3) to root...
Downloading http://downloads.lede-project.org/snapshots/packages/arm_cortex-a15_neon-vfpv4/packages/zerotier_1.2.4-3_arm_cortex-a15_neon-vfpv4.ipk
Configuring zerotier.
root@gateway:~# nano /etc/config/zerotier
root@gateway:~# /etc/init.d/zerotier stop
root@gateway:~# /etc/init.d/zerotier start
sh: /var/lib/zerotier-one: unknown operand
Generate secret - please wait...
Segmentation fault
cat: can't open '/tmp/zt.sample_config.secret': No such file or directory
rm: can't remove '/tmp/zt.sample_config.secret': No such file or directory
root@gateway:~# /etc/init.d/zerotier start
sh: /var/lib/zerotier-one: unknown operand
root@gateway:~# zerotier-cli
Segmentation fault

The sh: /var/lib/zerotier-one: unknown operand error is probably caused by newer busybox.

My device is zyxel nbg6817.

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For the segfault, I haven't been able to track it down, as building it with debug makes the problem go away :-/ (Heisenberg)

But the segfault always happens on mvebu (LinkSys WRT 1900*,3200ACM) when ZT isn't built with debug info.

the unknown operand is due to :
https://github.com/openwrt/packages/blob/master/net/zerotier/files/zerotier.init#L31 , where config_path isn't set

add option config_path '/var/lib/zerotier' to have this error go away, didn't dig deeper than that

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ah, ok. The unknown operand error is easy to fix ("$config_path"). But I do not know about the segfault. My testing device is broken and I wait for the new shipment for a month now...

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@miegl please try https://mwarning.de/misc/zerotier_1.2.4-4_arm_cortex-a15_neon-vfpv4.ipk

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Thu Apr 12 14:33:59 2018 daemon.notice procd: /etc/rc.d/S90zerotier: Generate secret - please wait...
Thu Apr 12 14:33:59 2018 daemon.notice procd: /etc/rc.d/S90zerotier: Segmentation fault
Thu Apr 12 14:33:59 2018 daemon.notice procd: /etc/rc.d/S90zerotier: cat: can't open '/tmp/zt.sample_config.secret': No such file or directory
Thu Apr 12 14:33:59 2018 daemon.notice procd: /etc/rc.d/S90zerotier: rm: can't remove '/tmp/zt.sample_config.secret': No such file or directory

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@miegl how did you get that output from procd ?

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@miegl please try again: https://mwarning.de/misc/zerotier_1.2.4-4_arm_cortex-a15_neon-vfpv4.ipk

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@mwarning do you have a branch or commit ? did you find to fix the segfault ?

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@delandtj I hope to have fixed it in 2ef2c02 (remove -pie from linker options)
.. though, it is not a bugfix.

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@mwarning wow it actually seems to work! Thank you 👍

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