500+ gretap tunnel Interfaces in batman einhängen (für wireguard)


#1

FYI … 510 Gretap tunnel aufgemacht und in batman-adv eingehangen (unbenutzt soweit, wobei batman broadcast purzelt da schon real rein) - bis zum 127. soweit kein problem. - batv14
ab 127. dann Error - can’t write to file ‘/sys/class/net/gre128/batman_adv/mesh_iface’: Cannot allocate memory
Dies als Test

Script dazu

# add one if per 3 second and give output, also monitor dmesg
dmesg -w &
for i in `seq 1 255`; do
     # one interface
      ip link add gre$i type gretap local 192.168.99.1 remote 192.168.3.$i ttl 255 dev wg0
      ip link set up dev gre$i
      batctl if add gre$i
      # another inf
      ip link add grex$i type gretap local 192.168.99.1 remote 192.168.4.$i ttl 255 dev wg0
      ip link set up dev grex$i
      batctl if add grex$i
      echo -n $(uptime|cut -d"," -f4-) $(ifconfig wg0|grep TX\ p) $i
      sleep 3
done

Load average: 0.01, 0.00, 0.00 TX packets 80872676 bytes 43983093228 (40.9 GiB) 126Error - can't write to file '/sys/class/net/gre127/batman_adv/mesh_iface': Cannot allocate memory                                                                       
[113990.684849] ------------[ cut here ]------------                                                                                                                                                                                                       
[113990.684861] WARNING: CPU: 0 PID: 12430 at /build/linux-lIgGMF/linux-4.8.11/mm/slab_common.c:861 kmalloc_slab+0x90/0xa0                                                                                                                                 
[113990.684867] Modules linked in: dm_mod ip_gre ip_tunnel gre xt_hashlimit wireguard(OE) ip6_udp_tunnel udp_tunnel intel_rapl x86_pkg_temp_thermal coretemp crct10dif_pclmul evdev crc32_pclmul pcspkr ghash_clmulni_intel batman_adv(OE) libcrc32c ip_tabl
es x_tables autofs4 ext4 crc16 jbd2 crc32c_generic fscrypto ecb mbcache crc32c_intel aesni_intel xen_netfront xen_blkfront aes_x86_64 glue_helper lrw gf128mul ablk_helper cryptd                                                                          
[113990.684907] CPU: 0 PID: 12430 Comm: batctl Tainted: G        W  OE   4.8.0-2-amd64 #1 Debian 4.8.11-1                                                                                                                                                  
[113990.684914]  0000000000000200 0000000052b690a8 ffffffff813269f5 0000000000000000                                                                                                                                                                       
[113990.684921]  0000000000000000 ffffffff8107c16e 0000000002080020 fffffffffffffc00                                                                                                                                                                       
[113990.684929]  ffffffffc017a804 fffffffffffffc00 ffffffffffffff80 fffffffffffffbf8                                                                                                                                                                       
[113990.684936] Call Trace:                                                                                                                                                                                                                                
[113990.684942]  [<ffffffff813269f5>] ? dump_stack+0x5c/0x77                                                                                                                                                                                               
[113990.684947]  [<ffffffff8107c16e>] ? __warn+0xbe/0xe0                                                                                                                                                                                                   
[113990.684955]  [<ffffffffc017a804>] ? batadv_orig_hash_add_if+0x94/0x140 [batman_adv]                                                                                                                                                                    
[113990.684961]  [<ffffffff811a7b10>] ? kmalloc_slab+0x90/0xa0                                                                                                                                                                                             
[113990.684966]  [<ffffffff811e08c5>] ? __kmalloc+0x25/0x580                                                                                                                                                                                               
[113990.684971]  [<ffffffff815ef9d7>] ? _raw_spin_lock_irqsave+0x17/0x39                                                                                                                                                                                   
[113990.684977]  [<ffffffff81432c11>] ? _crng_backtrack_protect+0x31/0x70                                                                                                                                                                                  
[113990.684981]  [<ffffffff811e0ebc>] ? kmem_cache_alloc_trace+0x9c/0x540                                                                                                                                                                                  
[113990.684986]  [<ffffffff814340b7>] ? get_random_bytes+0xe7/0x1c0                                                                                                                                                                                        
[113990.684991]  [<ffffffffc017a804>] ? batadv_orig_hash_add_if+0x94/0x140 [batman_adv]                                                                                                                                                                    
[113990.684999]  [<ffffffffc01779ac>] ? batadv_hardif_enable_interface+0x1cc/0x2e0 [batman_adv]                                                                                                                                                            
[113990.685007]  [<ffffffffc017f2c2>] ? batadv_store_mesh_iface+0xb2/0x150 [batman_adv]                                                                                                                                                                    
[113990.685013]  [<ffffffff8127fa98>] ? kernfs_fop_write+0x118/0x1a0                                                                                                                                                                                       
[113990.685018]  [<ffffffff81202303>] ? vfs_write+0xb3/0x1a0                                                                                                                                                                                               
[113990.685022]  [<ffffffff812036e2>] ? SyS_write+0x52/0xc0                                                                                                                                                                                                
[113990.685039]  [<ffffffff815efa76>] ? system_call_fast_compare_end+0xc/0x96                                                                                                                                                                              
[113990.685044] ---[ end trace 3e82ace6f98e8470 ]---                                                                                                                                                                                                       
[113990.684849] ------------[ cut here ]------------                                                                                                                                                                                                       
[113990.684861] WARNING: CPU: 0 PID: 12430 at /build/linux-lIgGMF/linux-4.8.11/mm/slab_common.c:861 kmalloc_slab+0x90/0xa0                                                                                                                                 
[113990.684867] Modules linked in: dm_mod ip_gre ip_tunnel gre xt_hashlimit wireguard(OE) ip6_udp_tunnel udp_tunnel intel_rapl x86_pkg_temp_thermal coretemp crct10dif_pclmul evdev crc32_pclmul pcspkr ghash_clmulni_intel batman_adv(OE) libcrc32c ip_tabl
es x_tables autofs4 ext4 crc16 jbd2 crc32c_generic fscrypto ecb mbcache crc32c_intel aesni_intel xen_netfront xen_blkfront aes_x86_64 glue_helper lrw gf128mul ablk_helper cryptd                                                                          
[113990.684907] CPU: 0 PID: 12430 Comm: batctl Tainted: G        W  OE   4.8.0-2-amd64 #1 Debian 4.8.11-1                                                                                                                                                  
[113990.684914]  0000000000000200 0000000052b690a8 ffffffff813269f5 0000000000000000                                                                                                                                                                       
[113990.684921]  0000000000000000 ffffffff8107c16e 0000000002080020 fffffffffffffc00                                                                                                                                                                       
[113990.684929]  ffffffffc017a804 fffffffffffffc00 ffffffffffffff80 fffffffffffffbf8                                                                                                                                                                       
[113990.684936] Call Trace:                                                                                                                                                                                                                                
[113990.684942]  [<ffffffff813269f5>] ? dump_stack+0x5c/0x77                                                                                                                                                                                               
[113990.684947]  [<ffffffff8107c16e>] ? __warn+0xbe/0xe0                                                                                                                                                                                                   
[113990.684955]  [<ffffffffc017a804>] ? batadv_orig_hash_add_if+0x94/0x140 [batman_adv]                                                                                                                                                                    
[113990.684961]  [<ffffffff811a7b10>] ? kmalloc_slab+0x90/0xa0                                                                                                                                                                                             
[113990.684966]  [<ffffffff811e08c5>] ? __kmalloc+0x25/0x580                                                                                                                                                                                               
[113990.684971]  [<ffffffff815ef9d7>] ? _raw_spin_lock_irqsave+0x17/0x39                                                                                                                                                                                   
[113990.684977]  [<ffffffff81432c11>] ? _crng_backtrack_protect+0x31/0x70
[113990.684981]  [<ffffffff811e0ebc>] ? kmem_cache_alloc_trace+0x9c/0x540
[113990.684986]  [<ffffffff814340b7>] ? get_random_bytes+0xe7/0x1c0
[113990.684991]  [<ffffffffc017a804>] ? batadv_orig_hash_add_if+0x94/0x140 [batman_adv]
[113990.684999]  [<ffffffffc01779ac>] ? batadv_hardif_enable_interface+0x1cc/0x2e0 [batman_adv]
[113990.685007]  [<ffffffffc017f2c2>] ? batadv_store_mesh_iface+0xb2/0x150 [batman_adv]
[113990.685013]  [<ffffffff8127fa98>] ? kernfs_fop_write+0x118/0x1a0
[113990.685018]  [<ffffffff81202303>] ? vfs_write+0xb3/0x1a0
[113990.685022]  [<ffffffff812036e2>] ? SyS_write+0x52/0xc0
[113990.685039]  [<ffffffff815efa76>] ? system_call_fast_compare_end+0xc/0x96
[113990.685044] ---[ end trace 3e82ace6f98e8470 ]---
Error - can't write to file '/sys/class/net/gre127/batman_adv/mesh_iface': Cannot allocate memory
load average: 0.01, 0.00, 0.00 TX packets 80874265 bytes 43983761422 (40.9 GiB) 127Error - can't write to file '/sys/class/net/gre128/batman_adv/mesh_iface': Cannot allocate memory

#2

9 Beiträge wurden in ein neues Thema verschoben: Wireguard - technische Diskussion


#3