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Segfault in Openconnect libc.so #2167

Closed pynu closed 8 years ago

pynu commented 8 years ago

Firmware Version OpenWrt Designated Driver r47928 / LuCI Master (git-15.351.05963-967bb1f) Kernel Version 3.18.23 Platform X86, X86-64

Thu Dec 17 16:40:10 2015 kern.info kernel: [ 129.910423] ocserv[3831]: segfault at 0 ip 00007f3ab235533b sp 00007fff3c0045d0 error 4 in libc.so[7f3ab233a000+66000] Thu Dec 17 16:40:15 2015 kern.info kernel: [ 134.913907] ocserv[3842]: segfault at 0 ip 00007f776c78633b sp 00007ffee05fb630 error 4 in libc.so[7f776c76b000+66000] Thu Dec 17 16:40:20 2015 kern.info kernel: [ 139.917354] ocserv[3853]: segfault at 0 ip 00007fdb032e633b sp 00007ffcf91294f0 error 4 in libc.so[7fdb032cb000+66000] Thu Dec 17 16:40:25 2015 daemon.info procd: Instance ocserv::instance1 s in a crash loop 6 crashes, 0 seconds since last crash Thu Dec 17 16:40:25 2015 kern.info kernel: [ 144.920830] ocserv[3864]: segfault at 0 ip 00007f24ee85b33b sp 00007ffdf69a05a0 error 4 in libc.so[7f24ee840000+66000] Thu Dec 17 16:41:04 2015 kern.info kernel: [ 183.177266] ocserv[4248]: segfault at 0 ip 00007faaddac033b sp 00007fff9339d050 error 4 in libc.so[7faaddaa5000+66000]

t0t3m1n commented 8 years ago

Hi, i have a similar problem with a more recent fw version

Firmware version: OpenWrt Designated Driver r48078 / Luci Master (git-15.365.40842-0f1e39a) Kernel version: 4.1.13 Platform: mips (Lantiq)

Tue Jan 5 18:31:19 2016 kern.info kernel: [11487.676862] Tue Jan 5 18:31:19 2016 kern.info kernel: [11487.676862] do_page_fault(): sending SIGSEGV to ocserv for invalid read access from 00000000 Tue Jan 5 18:31:19 2016 kern.info kernel: [11487.683883] epc = 774dfb2c in libc.so[774c8000+92000] Tue Jan 5 18:31:19 2016 kern.info kernel: [11487.688943] ra = 00413280 in ocserv[400000+55000] Tue Jan 5 18:31:19 2016 kern.info kernel: [11487.693562] Tue Jan 5 18:31:19 2016 daemon.info procd: Instance ocserv::instance1 s in a crash loop 6 crashes, 0 seconds since last crash

UPDATE: in my case the problem is caused by the parameter "expose-iroutes = true" in ocserv.conf. After commenting the line the daemon starts normally, i'll send an email to the mantainer.

nmav commented 8 years ago

I do not seem to be able to reproduce that. Could you send me a generated configuration file that crashes? It should be in /tmp/etc/ocserv.conf

nmav commented 8 years ago

Never mind, I think I figured the issue. I'll submit a fix and I'd appreciate testing.

t0t3m1n commented 8 years ago

I've tested your patch and i can confirm it's working, no more segmentation fault with expose-iroutes = true. Thank you.

nmav commented 8 years ago

Thank you.