Oh, neat, I hadn’t noticed this thread. I have a separate one here where I’ve also already posted my logs. It looks like a memory leak of some kind - the symptoms are consistent with that too, since the crashes happen in regular intervals (~1 week), and become more frequent with additional plugins.
I use it in cable mode, having about 5 devices connected via ethernet as well as via wifi most of the time, but am otherwise using it as it came out of the box (see the other thread, I wanted to reproduce this).
Adding this here for ease of access 
\0\0\0\0]\0]<4>[ 3175.210139] 145 total pagecache pages
<4>[ 3175.213783] 0 pages in swap cache
<4>[ 3175.217092] Swap cache stats: add 0, delete 0, find 0/0
<4>[ 3175.222289] Free swap = 0kB
<4>[ 3175.225150] Total swap = 0kB
<4>[ 3175.228030] 65536 pages RAM
<4>[ 3175.230807] 0 pages HighMem/MovableOnly
<4>[ 3175.234618] 2253 pages reserved
<6>[ 3175.237753] [ pid ] uid tgid total_vm rss nr_ptes nr_pmds swapents oom_score_adj name
<6>[ 3175.246283] [ 689] 0 689 258 8 3 0 0 0 urngd
<6>[ 3175.254858] [ 2300] 0 2300 271 7 3 0 0 0 dropbear
<6>[ 3175.263706] [ 4998] 0 4998 944 0 4 0 0 0 gltertf
<6>[ 3175.272483] [17380] 0 17380 406 0 3 0 0 0 netifd
<6>[ 3175.281163] [17463] 0 17463 667 0 4 0 0 0 dnsmasq
<3>[ 3175.289931] Out of memory: Kill process 689 (urngd) score 0 or sacrifice child
<3>[ 3175.297164] Killed process 689 (urngd) total-vm:1032kB, anon-rss:32kB, file-rss:0kB, shmem-rss:0kB
<4>[ 3175.345927] procd invoked oom-killer: gfp_mask=0x15080c0(GFP_KERNEL_ACCOUNT|__GFP_ZERO), nodemask=(null), order=1, oom_score_adj=0
<4>[ 3175.357748] CPU: 1 PID: 1 Comm: procd Not tainted 4.14.221 #0
<4>[ 3175.363465] Stack : 00000000 0000000a 00000040 8007345c 80600000 8059f784 00000000 00000000
<4>[ 3175.371799] 8056912c 8fc2dc24 8fc3837c 805dc9c7 80563ec0 00000001 8fc2dbc8 ac07f5c4
<4>[ 3175.380137] 00000000 00000000 80740000 00010b20 00000000 000010f3 00000007 00000000
<4>[ 3175.388472] 00000000 805e0000 00057574 00000000 80000000 80600000 00000000 8056e910
<4>[ 3175.396810] 00000000 00200000 ffffffff 0000000a 00000000 802c34c0 00000004 80740004
<4>[ 3175.405146] ...
<4>[ 3175.407589] Call Trace:
<4>[ 3175.410053] [<8000c7b0>] show_stack+0x58/0x100
<4>[ 3175.414493] [<8049ced4>] dump_stack+0xa4/0xe0
<4>[ 3175.418844] [<800d8690>] dump_header.isra.25+0x90/0x1e0
<4>[ 3175.424046] [<800d78a4>] oom_kill_process+0x10c/0x4c4
<4>[ 3175.429078] [<800d8528>] out_of_memory+0x3c0/0x430
<4>[ 3175.433856] [<800dd100>] __alloc_pages_nodemask+0x994/0xd0c
<4>[ 3175.439415] [<8002d2f8>] copy_process.part.87+0xe8/0x160c
<4>[ 3175.444790] [<8002e9d0>] _do_fork+0x100/0x380
<4>[ 3175.449131] [<8002ecb0>] sys_fork+0x24/0x30
<4>[ 3175.453312] [<80016578>] syscall_common+0x34/0x58
<4>[ 3175.458068] Mem-Info:
<4>[ 3175.460347] active_anon:164 inactive_anon:23 isolated_anon:0
<4>[ 3175.460347] active_file:14 inactive_file:3 isolated_file:0
<4>[ 3175.460347] unevictable:0 dirty:0 writeback:0 unstable:0
<4>[ 3175.460347] slab_reclaimable:2340 slab_unreclaimable:18670
<4>[ 3175.460347] mapped:1 shmem:125 pagetables:21 bounce:0
<4>[ 3175.460347] free:5060 free_pcp:290 free_cma:0
<4>[ 3175.491958] Node 0 active_anon:656kB inactive_anon:92kB active_file:56kB inactive_file:12kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:4kB dirty:0kB writeback:0kB shmem:500kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes
<4>[ 3175.513707] Normal free:20240kB min:16384kB low:20480kB high:24576kB active_anon:656kB inactive_anon:92kB active_file:56kB inactive_file:12kB unevictable:0kB writepending:0kB present:262144kB managed:253132kB mlocked:0kB kernel_stack:103600kB pagetables:84kB bounce:0kB free_pcp:1160kB local_pcp:336kB free_cma:0kB
<4>[ 3175.541307] lowmem_reserve[]: 0 0 0
<4>[ 3175.544791] Normal: 438*4kB (UMEH) 116*8kB (MH) 82*16kB (MH) 55*32kB (UMEH) 62*64kB (UMEH) 24*128kB (UMEH) 21*256kB (UMEH) 4*512kB (MEH) 0*1024kB 0*2048kB 0*4096kB = 20216kB
<4>[ 3175.560268] 145 total pagecache pages
<4>[ 3175.563911] 0 pages in swap cache
<4>[ 3175.567225] Swap cache stats: add 0, delete 0, find 0/0
<4>[ 3175.572422] Free swap = 0kB
<4>[ 3175.575283] Total swap = 0kB
<4>[ 3175.578159] 65536 pages RAM
<4>[ 3175.580936] 0 pages HighMem/MovableOnly
<4>[ 3175.584747] 2253 pages reserved
<6>[ 3175.587886] [ pid ] uid tgid total_vm rss nr_ptes nr_pmds swapents oom_score_adj name
<6>[ 3175.596408] [ 2300] 0 2300 271 7 3 0 0 0 dropbear
<6>[ 3175.605246] [ 4998] 0 4998 944 0 4 0 0 0 gltertf
<6>[ 3175.614023] [17380] 0 17380 406 0 3 0 0 0 netifd
<6>[ 3175.622705] [17463] 0 17463 667 0 4 0 0 0 dnsmasq
<3>[ 3175.631472] Out of memory: Kill process 2300 (dropbear) score 0 or sacrifice child
<3>[ 3175.639060] Killed process 2300 (dropbear) total-vm:1084kB, anon-rss:28kB, file-rss:0kB, shmem-rss:0kB
<4>[ 3175.685915] procd invoked oom-killer: gfp_mask=0x15080c0(GFP_KERNEL_ACCOUNT|__GFP_ZERO), nodemask=(null), order=1, oom_score_adj=0
<4>[ 3175.697734] CPU: 1 PID: 1 Comm: procd Not tainted 4.14.221 #0
<4>[ 3175.703451] Stack : 00000000 80604668 00000040 8007345c 80600000 8059f784 00000000 00000000
<4>[ 3175.711787] 8056912c 8fc2dc74 8fc3837c 805dc9c7 80563ec0 00000001 8fc2dc18 ac07f5c4
<4>[ 3175.720126] 00000000 00000000 80740000 000118d8 00000000 0000111b 00000007 00000000
<4>[ 3175.728463] 00000000 805e0000 000aa586 00000000 80000000 80600000 00000000 805dcac0
<4>[ 3175.736801] 00000001 00200000 ffffffff 80604668 00000000 802c34c0 00000004 80740004
<4>[ 3175.745134] ...
<4>[ 3175.747572] Call Trace:
<4>[ 3175.750035] [<8000c7b0>] show_stack+0x58/0x100
<4>[ 3175.754474] [<8049ced4>] dump_stack+0xa4/0xe0
<4>[ 3175.758825] [<800d8690>] dump_header.isra.25+0x90/0x1e0
<4>[ 3175.764027] [<800d84e8>] out_of_memory+0x380/0x430
<4>[ 3175.768808] [<800dd100>] __alloc_pages_nodemask+0x994/0xd0c
<4>[ 3175.774364] [<8002d2f8>] copy_process.part.87+0xe8/0x160c
<4>[ 3175.779742] [<8002e9d0>] _do_fork+0x100/0x380
<4>[ 3175.784079] [<8002ecb0>] sys_fork+0x24/0x30
<4>[ 3175.788263] [<80016578>] syscall_common+0x34/0x58
<4>[ 3175.793016] Mem-Info:
<4>[ 3175.795294] active_anon:164 inactive_anon:23 isolated_anon:0
<4>[ 3175.795294] active_file:0 inactive_file:19 isolated_file:0
<4>[ 3175.795294] unevictable:0 dirty:0 writeback:0 unstable:0
<4>[ 3175.795294] slab_reclaimable:2340 slab_unreclaimable:18670
<4>[ 3175.795294] mapped:1 shmem:125 pagetables:21 bounce:0
<4>[ 3175.795294] free:5060 free_pcp:302 free_cma:0
<4>[ 3175.826911] Node 0 active_anon:656kB inactive_anon:92kB active_file:0kB inactive_file:76kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:4kB dirty:0kB writeback:0kB shmem:500kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes
<4>[ 3175.848570] Normal free:20240kB min:16384kB low:20480kB high:24576kB active_anon:656kB inactive_anon:92kB active_file:0kB inactive_file:76kB unevictable:0kB writepending:0kB present:262144kB managed:253132kB mlocked:0kB kernel_stack:103600kB pagetables:84kB bounce:0kB free_pcp:1208kB local_pcp:336kB free_cma:0kB
<4>[ 3175.876084] lowmem_reserve[]: 0 0 0
<4>[ 3175.879570] Normal: 438*4kB (UMEH) 116*8kB (MH) 82*16kB (MH) 56*32kB (UMEH) 62*64kB (UMEH) 24*128kB (UMEH) 21*256kB (UMEH) 4*512kB (MEH) 0*1024kB 0*2048kB 0*4096kB = 20248kB
<4>[ 3175.895046] 145 total pagecache pages
<4>[ 3175.898703] 0 pages in swap cache
<4>[ 3175.902000] Swap cache stats: add 0, delete 0, find 0/0
<4>[ 3175.907213] Free swap = 0kB
<4>[ 3175.910076] Total swap = 0kB
<4>[ 3175.912943] 65536 pages RAM
<4>[ 3175.915734] 0 pages HighMem/MovableOnly
<4>[ 3175.919548] 2253 pages reserved
<6>[ 3175.922669] [ pid ] uid tgid total_vm rss nr_ptes nr_pmds swapents oom_score_adj name
<6>[ 3175.931197] [ 4998] 0 4998 944 0 4 0 0 0 gltertf
<6>[ 3175.939969] [17380] 0 17380 406 0 3 0 0 0 netifd
<6>[ 3175.948653] [17463] 0 17463 667 0 4 0 0 0 dnsmasq
<0>[ 3175.957421] Kernel panic - not syncing: Out of memory and no killable processes...