Out of memory

需求应用场景 请描述需求应用的场景和方式。 With Release 48.2 I have enountered persistent OOM events caused by smartdns: _Fri Aug 7 08:21:34 2026 daemon.notice netifd: wan (5103): udhcpc: sending renew to server 100.72.0.1 Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.875790] rrdtool queue invoked oom-killer: gfp_mask=0x140cca(GFP_HIGHUSER_MOVABLE|__GFP_COMP), order=0, oom_score_adj=0 Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.876908] CPU: 0 UID: 0 PID: 5747 Comm: rrdtool queue Tainted: G O 6.12.94 #0 Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.876936] Tainted: [O]=OOT_MODULE Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.876939] Hardware name: FriendlyElec NanoPi R2S (DT) Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.876944] Call trace: Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.876947] 0xffff80008001c25c Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.876955] 0xffff80008001c2b8 Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.876958] 0xffff800080a32664 Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.876962] 0xffff800080a3269c Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.876965] 0xffff800080a24de8 Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.876968] 0xffff8000801964d4 Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.876972] 0xffff800080196b38 Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.876975] 0xffff8000801fb204 Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.876979] 0xffff8000801fba74 Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.876982] 0xffff8000801929cc Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.876986] 0xffff800080192fa8 Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.876989] 0xffff8000801cdbe4 Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.876993] 0xffff8000801d6c08 Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.876996] 0xffff8000801d74a0 Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.877000] 0xffff800080027888 Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.877004] 0xffff800080027c78 Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.877008] 0xffff800080027e8c Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.877011] 0xffff800080a32754 Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.877015] 0xffff800080a33a28 Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.877018] 0xffff800080011558 Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.877023] Mem-Info: Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.885225] active_anon:177545 inactive_anon:52837 isolated_anon:0 Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.885225] active_file:296 inactive_file:323 isolated_file:0 Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.885225] unevictable:0 dirty:0 writeback:0 Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.885225] slab_reclaimable:1944 slab_unreclaimable:5576 Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.885225] mapped:1866 shmem:2430 pagetables:2379 Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.885225] sec_pagetables:0 bounce:0 Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.885225] kernel_misc_reclaimable:0 Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.885225] free:4764 free_pcp:1242 free_cma:273 Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.888773] Node 0 active_anon:863048kB inactive_anon:58480kB active_file:1304kB inactive_file:1024kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:7364kB dirty:0kB writeback:0kB shmem:9720kB shmem_thp:0kB shmem_pmdmapped:0kB anon_thp:184320kB writeback_tmp:0kB kernel_stack:2608kB pagetables:9516kB sec_pagetables:0kB all_unreclaimable? no Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.891590] DMA free:19056kB boost:0kB min:16384kB low:20480kB high:24576kB reserved_highatomic:0KB active_anon:710180kB inactive_anon:211348kB active_file:1200kB inactive_file:1020kB unevictable:0kB writepending:0kB present:1046528kB managed:1008844kB mlocked:0kB bounce:0kB free_pcp:5008kB local_pcp:0kB free_cma:1092kB Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.894158] lowmem_reserve[]: 0 0 0 0 Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.894577] DMA: 9494kB (UMEC) 6618kB (UEC) 19316kB (UMEC) 5532kB (UEC) 3664kB (UMEC) 10128kB (UME) 3256kB (UME) 2512kB (ME) 01024kB 02048kB 0*4096kB = 19308kB Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.896012] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.896858] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=32768kB Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.897625] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.898364] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=64kB Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.899086] 3178 total pagecache pages Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.899450] 0 pages in swap cache Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.899816] Free swap = 0kB Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.900108] Total swap = 0kB Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.900372] 261632 pages RAM Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.900626] 0 pages HighMem/MovableOnly Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.900964] 9421 pages reserved Fri Aug 7 08:24:06 2026 kern.warn kernel: [13579.901240] 4096 pages cma reserved Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.901603] Tasks state (memory values in pages): Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.901613] [ pid ] uid tgid total_vm rss rss_anon rss_file rss_shmem pgtables_bytes swapents oom_score_adj name Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.901667] [ 285] 81 285 290 50 0 50 0 45056 0 0 ubusd Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.901687] [ 301] 0 301 231 40 0 40 0 40960 0 0 askfirst Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.901704] [ 358] 0 358 255 10 0 10 0 40960 0 0 urngd Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.901723] [ 641] 514 641 670 32 32 0 0 40960 0 0 logd Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.901737] [ 642] 0 642 304 1 0 1 0 40960 0 0 logread Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.901751] [ 696] 0 696 588 169 160 9 0 40960 0 0 rpcd Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.901807] [ 797] 323 797 333 32 32 0 0 36864 0 0 chronyd Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.901827] [ 1075] 0 1075 283 57 0 57 0 40960 0 0 dropbear Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.901844] [ 1247] 0 1247 931644 218982 218982 0 0 7503872 0 0 smartdns Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.901858] [ 1315] 0 1315 594 64 64 0 0 40960 0 0 netifd Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.901872] [ 1567] 0 1567 349 0 0 0 0 40960 0 0 odhcpd Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.901885] [ 1628] 0 1628 333 0 0 0 0 40960 0 0 crond Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.901899] [ 1653] 0 1653 286 52 0 52 0 36864 0 0 netserver Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.901914] [ 2086] 0 2086 1461 233 192 41 0 49152 0 -1000 sshd Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.901929] [ 2319] 0 2319 511 79 32 47 0 45056 0 0 uhttpd Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.901945] [ 2460] 0 2460 591 32 0 32 0 45056 0 0 dbus Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.901959] [ 2509] 0 2509 402 49 0 49 0 36864 0 0 dbus-daemon Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.901974] [ 2596] 0 2596 592 96 96 0 0 40960 0 0 vnstatd Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.901988] [ 2649] 105 2649 473 3 0 3 0 36864 0 0 avahi-daemon Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.902002] [ 3381] 0 3381 308 0 0 0 0 40960 0 0 irqbalance Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.902016] [ 3562] 121 3562 350 13 0 13 0 36864 0 0 lldpd Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.902030] [ 3634] 121 3634 348 0 0 0 0 36864 0 0 lldpd Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.902045] [ 4304] 0 4304 462 126 126 0 0 40960 0 0 lua Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.902059] [ 4504] 0 4504 9121 1178 448 0 730 114688 0 0 smbd Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.902073] [ 4505] 0 4505 6987 480 384 0 96 98304 0 0 nmbd Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.902087] [ 4715] 0 4715 588 45 0 45 0 45056 0 0 librespeed-go Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.902101] [ 4771] 32768 4771 335002 2450 2450 0 0 139264 0 0 librespeed-go Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.902115] [ 4806] 0 4806 6868 463 438 25 0 90112 0 0 nmbd Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.902130] [ 4845] 0 4845 8690 494 494 0 0 98304 0 0 smbd-notifyd Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.902143] [ 4849] 0 4849 8688 494 494 0 0 98304 0 0 smbd-cleanupd Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.902157] [ 5036] 0 5036 242 16 0 16 0 40960 0 0 wsdd2 Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.902171] [ 5103] 0 5103 332 0 0 0 0 36864 0 0 udhcpc Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.902185] [ 5111] 0 5111 291 0 0 0 0 40960 0 0 odhcp6c Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.902199] [ 5715] 0 5715 895 192 192 0 0 40960 0 0 collectd Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.902213] [ 6735] 0 6735 1964 986 0 986 0 53248 0 0 tcpdump Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.902226] [ 7074] 0 7074 588 52 0 52 0 40960 0 0 dnsmasq Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.902240] [ 7091] 453 7091 3745 3445 3392 53 0 73728 0 0 dnsmasq Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.902259] [ 7161] 0 7161 6988 442 442 0 0 90112 0 0 nmbd Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.902272] [ 7162] 0 7162 9121 502 502 0 0 102400 0 0 smbd Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.902284] [ 7164] 0 7164 6987 442 442 0 0 90112 0 0 nmbd Fri Aug 7 08:24:06 2026 kern.info kernel: [13579.902296] oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=/,mems_allowed=0,global_oom,task_memcg=/,task=smartdns,pid=1247,uid=0 Fri Aug 7 08:24:06 2026 kern.err kernel: [13579.902481] Out of memory: Killed process 1247 (smartdns) total-vm:3726576kB, anon-rss:875928kB, file-rss:0kB, shmem-rss:0kB, UID:0 pgtables:7328kB oom_score_adj:0 Fri Aug 7 08:24:07 2026 daemon.info vnstatd[2596]: Warning: Writing cached data to database took 406.0 seconds. Fri Aug 7 08:24:10 2026 daemon.notice netifd: wan (5103): udhcpc: sending renew to server 100.72.0.1 Fri Aug 7 08:24:10 2026 daemon.notice netifd: wan (5103): udhcpc: lease of 100.73.255.149 obtained from 100.72.0.1, lease time 1200 Fri Aug 7 08:36:48 2026 daemon.notice netifd: wan (5103): udhcpc: sending renew to server 100.72.0.1 Fri Aug 7 08:42:30 2026 daemon.notice netifd: wan (5103): udhcpc: sending renew to server 100.72.0.1 Fri Aug 7 08:45:30 2026 daemon.notice netifd: wan (5103): udhcpc: sending renew to server 100.72.0.1 Fri Aug 7 08:46:13 2026 daemon.notice netifd: wan (5103): udhcpc: sending renew to server 100.72.0.1 Fri Aug 7 08:47:56 2026 daemon.notice netifd: wan (5103): udhcpc: sending renew to server 100.72.0.1 Fri Aug 7 08:49:41 2026 daemon.notice netifd: wan (5103): udhcpc: sending renew to server 100.72.0.1 Fri Aug 7 08:50:29 2026 daemon.notice netifd: wan (5103): udhcpc: broadcasting renew Fri Aug 7 08:51:34 2026 daemon.notice netifd: wan (5103): udhcpc: lease of 100.73.255.149 obtained from 100.72.0.1, lease time 1200 Fri Aug 7 08:54:40 2026 daemon.warn chronyd[797]: Can't synchronise: no selectable sources (16 unreachable sources) Fri Aug 7 09:02:51 2026 cron.err crond[1628]: USER root pid 7256 cmd service luci_statistics backup Fri Aug 7 09:03:10 2026 kern.notice kernel: [15902.198216] r8152 4-1:1.0 eth1: Promiscuous mode enabled Fri Aug 7 09:03:23 2026 kern.info kernel: [15902.198440] r8152 4-1:1.0 eth1: carrier on Fri Aug 7 09:03:43 2026 kern.info kernel: [15902.199482] br-lan: port 1(eth1) entered blocking state Fri Aug 7 09:04:01 2026 kern.info kernel: [15902.199527] br-lan: port 1(eth1) entered forwarding state Fri Aug 7 09:04:18 2026 kern.notice kernel: [15902.200925] r8152 4-1:1.0 eth1: Promiscuous mode enabled Fri Aug 7 09:04:40 2026 kern.notice kernel: [15903.363040] r8152 4-1:1.0 eth1: Promiscuous mode enabled Fri Aug 7 09:04:58 2026 kern.notice kernel: [15903.693315] r8152 4-1:1.0 eth1: Promiscuous mode enabled Fri Aug 7 09:05:13 2026 kern.info kernel: [15916.693978] r8152 4-1:1.0 eth1: carrier off Fri Aug 7 09:05:30 2026 kern.info kernel: [15916.694540] br-lan: port 1(eth1) entered disabled state Fri Aug 7 09:05:45 2026 kern.notice kernel: [15926.357534] r8152 4-1:1.0 eth1: Promiscuous mode enabled Fri Aug 7 09:06:07 2026 kern.info kernel: [15926.357717] r8152 4-1:1.0 eth1: carrier on Fri Aug 7 09:06:20 2026 kern.info kernel: [15926.358675] br-lan: port 1(eth1) entered blocking state Fri Aug 7 09:06:38 2026 kern.info kernel: [15926.358712] br-lan: port 1(eth1) entered forwarding state Fri Aug 7 09:06:53 2026 kern.info kernel: [15941.525417] r8152 4-1:1.0 eth1: carrier off Fri Aug 7 09:07:07 2026 kern.info kernel: [15941.526102] br-lan: port 1(eth1) entered disabled state Fri Aug 7 09:07:24 2026 kern.notice kernel: [15949.012033] r8152 4-1:1.0 eth1: Promiscuous mode enabled Fri Aug 7 09:07:39 2026 kern.info kernel: [15949.012235] r8152 4-1:1.0 eth1: carrier on Fri Aug 7 09:07:51 2026 kern.info kernel: [15949.013923] br-lan: port 1(eth1) entered blocking state Fri Aug 7 09:08:04 2026 kern.info kernel: [15949.013966] br-lan: port 1(eth1) entered forwarding state Fri Aug 7 09:08:17 2026 kern.info kernel: [15973.140854] r8152 4-1:1.0 eth1: carrier off Fri Aug 7 09:08:36 2026 kern.info kernel: [15973.141458] br-lan: port 1(eth1) entered disabled state Fri Aug 7 09:08:50 2026 kern.notice kernel: [15982.004593] r8152 4-1:1.0 eth1: Promiscuous mode enabled Fri Aug 7 09:09:07 2026 kern.info kernel: [15982.004782] r8152 4-1:1.0 eth1: carrier on Fri Aug 7 09:09:16 2026 kern.info kernel: [15982.005870] br-lan: port 1(eth1) entered blocking state Fri Aug 7 09:09:16 2026 kern.info kernel: [15982.005917] br-lan: port 1(eth1) entered forwarding state Fri Aug 7 09:09:16 2026 kern.warn kernel: [16289.569746] uhttpd invoked oom-killer: gfp_mask=0x400dc0(GFP_KERNEL_ACCOUNT|__GFP_ZERO), order=0, oom_score_adj=0 Fri Aug 7 09:09:16 2026 kern.warn kernel: [16289.570734] CPU: 1 UID: 0 PID: 2319 Comm: uhttpd Tainted: G O 6.12.94 #0 Fri Aug 7 09:09:16 2026 kern.warn kernel: [16289.570760] Tainted: [O]=OOT_MODULE Fri Aug 7 09:09:16 2026 kern.warn kernel: [16289.570764] Hardware name: FriendlyElec NanoPi R2S (DT) Fri Aug 7 09:09:16 2026 kern.warn kernel: [16289.570769] Call trace: Fri Aug 7 09:09:16 2026 kern.warn kernel: [16289.570773] 0xffff80008001c25c Fri Aug 7 09:09:16 2026 kern.warn kernel: [16289.570780] 0xffff80008001c2b8 Fri Aug 7 09:09:16 2026 kern.warn kernel: [16289.570784] 0xffff800080a32664 Fri Aug 7 09:09:16 2026 kern.warn kernel: [16289.570787] 0xffff800080a3269c Fri Aug 7 09:09:16 2026 kern.warn kernel: [16289.570791] 0xffff800080a24de8 Fri Aug 7 09:09:16 2026 kern.warn kernel: [16289.570795] 0xffff8000801964d4 Fri Aug 7 09:09:16 2026 kern.warn kernel: [16289.570798] 0xffff800080196b38 Fri Aug 7 09:09:16 2026 kern.warn kernel: [16289.570802] 0xffff8000801fb204 Fri Aug 7 09:09:16 2026 kern.warn kernel: [16289.570805] 0xffff8000801fbac0 Fri Aug 7 09:09:16 2026 kern.warn kernel: [16289.570809] 0xffff80008002885c Fri Aug 7 09:09:16 2026 kern.warn kernel: [16289.570812] 0xffff800080042884 Fri Aug 7 09:09:16 2026 kern.warn kernel: [16289.570816] 0xffff8000800444c4 Fri Aug 7 09:09:16 2026 kern.warn kernel: [16289.570819] 0xffff80008004556c Fri Aug 7 09:09:16 2026 kern.warn kernel: [16289.570823] 0xffff800080045960 Fri Aug 7 09:09:16 2026 kern.warn kernel: [16289.570826] 0xffff800080045b80 Fri Aug 7 09:09:16 2026 kern.warn kernel: [16289.570830] 0xffff800080022bec Fri Aug 7 09:09:16 2026 kern.warn kernel: [16289.570834] 0xffff800080022ca0 Fri Aug 7 09:09:16 2026 kern.warn kernel: [16289.570837] 0xffff800080a3365c Fri Aug 7 09:09:16 2026 kern.warn kernel: [16289.570841] 0xffff800080a33a58 Fri Aug 7 09:09:16 2026 kern.warn kernel: [16289.570844] 0xffff800080011558 Fri Aug 7 09:09:16 2026 kern.warn kernel: [16289.570848] Mem-Info: Fri Aug 7 09:09:16 2026 kern.warn kernel: [16289.578292] active_anon:21589 inactive_anon:207567 isolated_anon:0 Fri Aug 7 09:09:16 2026 kern.warn kernel: [16289.578292] active_file:422 inactive_file:302 isolated_file:0 Fri Aug 7 09:09:16 2026 kern.warn kernel: [16289.578292] unevictable:0 dirty:0 writeback:0 Fri Aug 7 09:09:16 2026 kern.warn kernel: [16289.578292] slab_reclaimable:1968 slab_unreclaimable:5805 Fri Aug 7 09:09:16 2026 kern.warn kernel: [16289.578292] mapped:1849 shmem:2444 pagetables:2452 Fri Aug 7 09:09:16 2026 kern.warn kernel: [16289.578292] sec_pagetables:0 bounce:0 Fri Aug 7 09:09:16 2026 kern.warn kernel: [16289.578292] kernel_misc_reclaimable:0 Fri Aug 7 09:09:16 2026 kern.warn kernel: [16289.578292] free:4204 free_pcp:1466 free_cma:1378 Fri Aug 7 09:09:16 2026 kern.warn kernel: [16289.581691] Node 0 active_anon:830268kB inactive_anon:86356kB active_file:2788kB inactive_file:208kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:7396kB dirty:0kB writeback:0kB shmem:9776kB shmem_thp:0kB shmem_pmdmapped:0kB anon_thp:63488kB writeback_tmp:0kB kernel_stack:2592kB pagetables:9808kB sec_pagetables:0kB all_unreclaimable? n