Dear All,

I am running OpenWRT with Coova-Chilli using external radius servers and login page very successfully for some years now on WRT54GL hardware.

I am now trying to port it over to a Nanostation2 using 8.09.1 release of OpenWRT. Whileit all seems to work well at first, after half an hour or so coova-chilli runs into trouble, when users have connected to the router either the login process gets stuck on Please wait... or a splash page does not come up at all.

On looking through the logs I discovered the following issue:


...
Sep 6 07:28:37 60-234-221-116.bitstream.orcon.net.nz coova-chilli[2328]: chilli.c: 1010: Unknown downlink protocol
Sep 6 07:28:37 60-234-221-116.bitstream.orcon.net.nz coova-chilli[2328]: redir.c: 1836: 12 (Cannot allocate memory) fork() returned -1!
Sep 6 07:28:38 60-234-221-116.bitstream.orcon.net.nz coova-chilli[2328]: redir.c: 1836: 12 (Cannot allocate memory) fork() returned -1!
Sep 6 07:28:40 60-234-221-116.bitstream.orcon.net.nz coova-chilli[2328]: redir.c: 1836: 12 (Cannot allocate memory) fork() returned -1!
Sep 6 07:29:07 60-234-221-116.bitstream.orcon.net.nz last message repeated 9 times
Sep 6 07:29:32 60-234-221-116.bitstream.orcon.net.nz last message repeated 8 times
Sep 6 07:29:36 60-234-221-116.bitstream.orcon.net.nz coova-chilli[2328]: options.c: 809: Rereading configuration file and doing DNS lookup
Sep 6 07:29:37 60-234-221-116.bitstream.orcon.net.nz coova-chilli[2328]: redir.c: 1836: 12 (Cannot allocate memory) fork() returned -1!
Sep 6 07:29:37 60-234-221-116.bitstream.orcon.net.nz coova-chilli[2328]: chilli.c: 1010: Unknown downlink protocol
Sep 6 07:29:42 60-234-221-116.bitstream.orcon.net.nz coova-chilli[2328]: redir.c: 1836: 12 (Cannot allocate memory) fork() returned -1!
Sep 6 07:29:57 60-234-221-116.bitstream.orcon.net.nz last message repeated 6 times
Sep 6 07:30:02 60-234-221-116.bitstream.orcon.net.nz coova-chilli[2328]: redir.c: 1836: 12 (Cannot allocate memory) fork() returned -1!
Sep 6 07:30:22 60-234-221-116.bitstream.orcon.net.nz last message repeated 7 times
Sep 6 07:30:27 60-234-221-116.bitstream.orcon.net.nz coova-chilli[2328]: redir.c: 1836: 12 (Cannot allocate memory) fork() returned -1!
Sep 6 07:30:35 60-234-221-116.bitstream.orcon.net.nz last message repeated 3 times
Sep 6 07:30:36 60-234-221-116.bitstream.orcon.net.nz coova-chilli[2328]: options.c: 809: Rereading configuration file and doing DNS lookup
Sep 6 07:30:37 60-234-221-116.bitstream.orcon.net.nz coova-chilli[2328]: redir.c: 1836: 12 (Cannot allocate memory) fork() returned -1!
Sep 6 07:30:37 60-234-221-116.bitstream.orcon.net.nz coova-chilli[2328]: redir.c: 1836: 12 (Cannot allocate memory) fork() returned -1!
Sep 6 07:30:37 60-234-221-116.bitstream.orcon.net.nz coova-chilli[2328]: chilli.c: 1010: Unknown downlink protocol
Sep 6 07:30:42 60-234-221-116.bitstream.orcon.net.nz coova-chilli[2328]: redir.c: 1836: 12 (Cannot allocate memory) fork() returned -1!
Sep 6 07:31:13 60-234-221-116.bitstream.orcon.net.nz last message repeated 13 times
Sep 6 07:31:33 60-234-221-116.bitstream.orcon.net.nz last message repeated 8 times
Sep 6 07:31:36 60-234-221-116.bitstream.orcon.net.nz coova-chilli[2328]: options.c: 809: Rereading configuration file and doing DNS lookup
Sep 6 07:31:37 60-234-221-116.bitstream.orcon.net.nz coova-chilli[2328]: chilli.c: 1010: Unknown downlink protocol
Sep 6 07:31:38 60-234-221-116.bitstream.orcon.net.nz coova-chilli[2328]: redir.c: 1836: 12 (Cannot allocate memory) fork() returned -1!
Sep 6 07:31:43 60-234-221-116.bitstream.orcon.net.nz coova-chilli[2328]: redir.c: 1836: 12 (Cannot allocate memory) fork() returned -1!
Sep 6 07:31:58 60-234-221-116.bitstream.orcon.net.nz last message repeated 4 times
Sep 6 07:32:03 60-234-221-116.bitstream.orcon.net.nz coova-chilli[2328]: redir.c: 1836: 12 (Cannot allocate memory) fork() returned -1!
Sep 6 07:32:34 60-234-221-116.bitstream.orcon.net.nz last message repeated 6 times
Sep 6 07:32:36 60-234-221-116.bitstream.orcon.net.nz coova-chilli[2328]: options.c: 809: Rereading configuration file and doing DNS lookup
Sep 6 07:32:38 60-234-221-116.bitstream.orcon.net.nz coova-chilli[2328]: chilli.c: 1010: Unknown downlink protocol
Sep 6 07:32:40 60-234-221-116.bitstream.orcon.net.nz coova-chilli[2328]: redir.c: 1836: 12 (Cannot allocate memory) fork() returned -1!
Sep 6 07:32:46 60-234-221-116.bitstream.orcon.net.nz coova-chilli[2328]: redir.c: 1836: 12 (Cannot allocate memory) fork() returned -1!
Sep 6 07:33:21 60-234-221-116.bitstream.orcon.net.nz last message repeated 7 times
Sep 6 07:33:26 60-234-221-116.bitstream.orcon.net.nz coova-chilli[2328]: redir.c: 1836: 12 (Cannot allocate memory) fork() returned -1!
Sep 6 07:33:31 60-234-221-116.bitstream.orcon.net.nz coova-chilli[2328]: redir.c: 1836: 12 (Cannot allocate memory) fork() returned -1!
Sep 6 07:33:36 60-234-221-116.bitstream.orcon.net.nz coova-chilli[2328]: options.c: 809: Rereading configuration file and doing DNS lookup
Sep 6 07:33:36 60-234-221-116.bitstream.orcon.net.nz coova-chilli[2328]: redir.c: 1836: 12 (Cannot allocate memory) fork() returned -1!
Sep 6 07:33:38 60-234-221-116.bitstream.orcon.net.nz coova-chilli[2328]: chilli.c: 1010: Unknown downlink protocol
Sep 6 07:33:42 60-234-221-116.bitstream.orcon.net.nz coova-chilli[2328]: redir.c: 1836: 12 (Cannot allocate memory) fork() returned -1!
Sep 6 07:34:17 60-234-221-116.bitstream.orcon.net.nz last message repeated 13 times
Sep 6 07:34:33 60-234-221-116.bitstream.orcon.net.nz last message repeated 6 times
Sep 6 07:34:36 60-234-221-116.bitstream.orcon.net.nz coova-chilli[2328]: options.c: 809: Rereading configuration file and doing DNS lookup
Sep 6 07:34:37 60-234-221-116.bitstream.orcon.net.nz coova-chilli[2328]: redir.c: 1836: 12 (Cannot allocate memory) fork() returned -1!
Sep 6 07:34:38 60-234-221-116.bitstream.orcon.net.nz coova-chilli[2328]: chilli.c: 1010: Unknown downlink protocol
Sep 6 07:34:42 60-234-221-116.bitstream.orcon.net.nz coova-chilli[2328]: redir.c: 1836: 12 (Cannot allocate memory) fork() returned -1!
...


So it goes on for pages.

Memory seems to be available:

root@Chillifire0015610:/proc# cat meminfo
MemTotal: 13504 kB
MemFree: 840 kB
Buffers: 564 kB
Cached: 1772 kB
SwapCached: 0 kB
Active: 3096 kB
Inactive: 4532 kB
Active(anon): 2404 kB
Inactive(anon): 2976 kB
Active(file): 692 kB
Inactive(file): 1556 kB
SwapTotal: 0 kB
SwapFree: 0 kB
Dirty: 0 kB
Writeback: 0 kB
AnonPages: 5296 kB
Mapped: 1068 kB
Slab: 3420 kB
SReclaimable: 352 kB
SUnreclaim: 3068 kB
PageTables: 212 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 6752 kB
Committed_AS: 9220 kB
VmallocTotal: 1048404 kB
VmallocUsed: 2604 kB
VmallocChunk: 1032608 kB

Can the developer(s) - David? - shed some light on what the issue might be and why the fork() routine may throw that error in redir.c?

Please advise