SSM Agent cannot manage t3.nano instances. Not enough RAM. OOM during package baseline scan.

Fire up a t3.nano instance running Ubuntu and allow it to be managed by AWS Systems Manager.

Ensure Systems Manager initiates a Software Baseline scan on the node.

Watch the SSM Agent crash and burn

```
Feb 02 16:44:51 ip-10-0-0-116 python3[1498]: /usr/lib/python3/dist-packages/uaclient/apt_news.py:207: Warning: W:Download is performed unsandboxed as root as file '/run/ubuntu-advantage/aptnews.json' couldn't be accessed by user '_apt'. - pkgAcquire::Run (13: Permission denied)
Feb 02 16:44:51 ip-10-0-0-116 python3[1498]: acq.run()
Feb 02 16:45:39 ip-10-0-0-116 kernel: irqbalance invoked oom-killer: gfp_mask=0x140cca(GFP_HIGHUSER_MOVABLE|__GFP_COMP), order=0, oom_score_adj=0
Feb 02 16:45:40 ip-10-0-0-116 kernel: CPU: 1 PID: 608 Comm: irqbalance Not tainted 6.8.0-1021-aws #23-Ubuntu
Feb 02 16:45:40 ip-10-0-0-116 kernel: Hardware name: Amazon EC2 t3.nano/, BIOS 1.0 10/16/2017
Feb 02 16:45:40 ip-10-0-0-116 kernel: Call Trace:
Feb 02 16:45:40 ip-10-0-0-116 kernel:
Feb 02 16:45:40 ip-10-0-0-116 kernel: dump_stack_lvl+0x76/0xa0
Feb 02 16:45:40 ip-10-0-0-116 kernel: dump_stack+0x10/0x20
Feb 02 16:45:40 ip-10-0-0-116 kernel: dump_header+0x47/0x200
Feb 02 16:45:40 ip-10-0-0-116 kernel: oom_kill_process+0x116/0x270
Feb 02 16:45:40 ip-10-0-0-116 kernel: ? oom_evaluate_task+0x143/0x1e0
Feb 02 16:45:40 ip-10-0-0-116 kernel: out_of_memory+0x103/0x350
Feb 02 16:45:40 ip-10-0-0-116 kernel: __alloc_pages_may_oom+0x10c/0x1d0
Feb 02 16:45:40 ip-10-0-0-116 kernel: __alloc_pages_slowpath.constprop.0+0x42a/0xa40
Feb 02 16:45:40 ip-10-0-0-116 kernel: __alloc_pages+0x306/0x330
Feb 02 16:45:40 ip-10-0-0-116 kernel: alloc_pages_mpol+0x91/0x200
Feb 02 16:45:40 ip-10-0-0-116 kernel: folio_alloc+0x64/0x120
Feb 02 16:45:40 ip-10-0-0-116 kernel: ? filemap_get_entry+0x66/0x150
Feb 02 16:45:40 ip-10-0-0-116 kernel: filemap_alloc_folio+0xf4/0x100
Feb 02 16:45:40 ip-10-0-0-116 kernel: __filemap_get_folio+0x14b/0x2f0
Feb 02 16:45:40 ip-10-0-0-116 kernel: filemap_fault+0x15c/0x880
Feb 02 16:45:40 ip-10-0-0-116 kernel: __do_fault+0x3b/0x140
Feb 02 16:45:40 ip-10-0-0-116 kernel: do_read_fault+0x114/0x1b0
Feb 02 16:45:40 ip-10-0-0-116 kernel: do_fault+0x10c/0x310
Feb 02 16:45:40 ip-10-0-0-116 kernel: handle_pte_fault+0x74/0x1c0
Feb 02 16:45:40 ip-10-0-0-116 kernel: __handle_mm_fault+0x65e/0x7a0
Feb 02 16:45:40 ip-10-0-0-116 kernel: handle_mm_fault+0x17c/0x380
Feb 02 16:45:40 ip-10-0-0-116 kernel: do_user_addr_fault+0x157/0x660
Feb 02 16:45:40 ip-10-0-0-116 kernel: exc_page_fault+0x83/0x190
Feb 02 16:45:40 ip-10-0-0-116 kernel: asm_exc_page_fault+0x27/0x30
Feb 02 16:45:40 ip-10-0-0-116 kernel: RIP: 0033:0x737a97eb4237
Feb 02 16:45:40 ip-10-0-0-116 kernel: Code: Unable to access opcode bytes at 0x737a97eb420d.
Feb 02 16:45:40 ip-10-0-0-116 kernel: RSP: 002b:00007ffe871a1d10 EFLAGS: 00010246
Feb 02 16:45:40 ip-10-0-0-116 kernel: RAX: 0000000000000000 RBX: 000063478eb5cd40 RCX: 0000000000000001
Feb 02 16:45:40 ip-10-0-0-116 kernel: RDX: 0000000000000000 RSI: 0000000000000001 RDI: 000063478eb5d1b0
Feb 02 16:45:40 ip-10-0-0-116 kernel: RBP: 00007ffe871a1d90 R08: 0000000000000000 R09: 000000007fffffff
Feb 02 16:45:40 ip-10-0-0-116 kernel: R10: 000063478eb5cd40 R11: 0000000000000293 R12: 000063478eb5d1b0
Feb 02 16:45:40 ip-10-0-0-116 kernel: R13: 00007ffe871a1d30 R14: 000000007fffffff R15: 00007ffe871a1d28
Feb 02 16:45:40 ip-10-0-0-116 kernel:
Feb 02 16:45:40 ip-10-0-0-116 kernel: Mem-Info:
Feb 02 16:45:40 ip-10-0-0-116 kernel: active_anon:30821 inactive_anon:40579 isolated_anon:0
active_file:311 inactive_file:499 isolated_file:0
unevictable:9257 dirty:40 writeback:0
slab_reclaimable:4424 slab_unreclaimable:10630
mapped:2201 shmem:684 pagetables:1383
sec_pagetables:0 bounce:0
kernel_misc_reclaimable:0
free:1067 free_pcp:13 free_cma:0
Feb 02 16:45:40 ip-10-0-0-116 kernel: Node 0 active_anon:123284kB inactive_anon:162316kB active_file:1452kB inactive_file:1788kB unevictable:37028kB isolated(anon):0kB isolated(file):0kB mapped:8804kB dirty:160kB writeback:0kB shmem:2736kB shmem_thp:0kB shmem_pmdmapped:0kB anon_thp:0kB writeback_tmp:0kB kernel_stack:3424kB pagetables:5532kB sec_pagetables:0kB all_unreclaimable? no
Feb 02 16:45:40 ip-10-0-0-116 kernel: Node 0 DMA free:1592kB boost:0kB min:92kB low:112kB high:132kB reserved_highatomic:0KB active_anon:4772kB inactive_anon:7760kB active_file:12kB inactive_file:4kB unevictable:0kB writepending:0kB present:15996kB managed:15360kB mlocked:0kB bounce:0kB free_pcp:48kB local_pcp:0kB free_cma:0kB
Feb 02 16:45:40 ip-10-0-0-116 kernel: lowmem_reserve[]: 0 386 386 386 386
Feb 02 16:45:40 ip-10-0-0-116 kernel: Node 0 DMA32 free:2676kB boost:5548kB min:8016kB low:8632kB high:9248kB reserved_highatomic:0KB active_anon:118512kB inactive_anon:154556kB active_file:1716kB inactive_file:1500kB unevictable:37028kB writepending:160kB present:465328kB managed:411548kB mlocked:27284kB bounce:0kB free_pcp:4kB local_pcp:0kB free_cma:0kB
Feb 02 16:45:40 ip-10-0-0-116 kernel: lowmem_reserve[]: 0 0 0 0 0
Feb 02 16:45:40 ip-10-0-0-116 kernel: Node 0 DMA: 1*4kB (M) 3*8kB (UM) 4*16kB (U) 3*32kB (UM) 8*64kB (UM) 1*128kB (M) 1*256kB (M) 1*512kB (M) 0*1024kB 0*2048kB 0*4096kB = 1596kB
Feb 02 16:45:40 ip-10-0-0-116 kernel: Node 0 DMA32: 155*4kB (UME) 86*8kB (UME) 60*16kB (UE) 23*32kB (UME) 1*64kB (M) 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 3068kB
Feb 02 16:45:40 ip-10-0-0-116 kernel: Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
Feb 02 16:45:40 ip-10-0-0-116 kernel: Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
Feb 02 16:45:40 ip-10-0-0-116 kernel: 5675 total pagecache pages
Feb 02 16:45:40 ip-10-0-0-116 kernel: 0 pages in swap cache
Feb 02 16:45:40 ip-10-0-0-116 kernel: Free swap = 0kB
Feb 02 16:45:40 ip-10-0-0-116 kernel: Total swap = 0kB
Feb 02 16:45:40 ip-10-0-0-116 kernel: 120331 pages RAM
Feb 02 16:45:40 ip-10-0-0-116 kernel: 0 pages HighMem/MovableOnly
Feb 02 16:45:40 ip-10-0-0-116 kernel: 13604 pages reserved
Feb 02 16:45:40 ip-10-0-0-116 kernel: 0 pages hwpoisoned
Feb 02 16:45:40 ip-10-0-0-116 kernel: Tasks state (memory values in pages):
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ pid ] uid tgid total_vm rss rss_anon rss_file rss_shmem pgtables_bytes swapents oom_score_adj name
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 125] 0 125 8508 1056 256 800 0 94208 0 -250 systemd-journal
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 187] 0 187 72238 6752 4608 2144 0 114688 0 -1000 multipathd
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 198] 0 198 6618 1372 768 604 0 77824 0 -1000 systemd-udevd
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 346] 991 346 5397 1312 544 768 0 86016 0 0 systemd-resolve
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 535] 998 535 5599 1024 256 768 0 81920 0 0 systemd-network
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 598] 0 598 680 480 32 448 0 45056 0 0 acpid
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 602] 0 602 1806 608 64 544 0 53248 0 0 cron
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 603] 101 603 2449 1056 192 864 0 69632 0 -900 dbus-daemon
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 608] 0 608 20730 832 64 768 0 69632 0 0 irqbalance
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 610] 0 610 8115 3360 2528 832 0 102400 0 0 networkd-dispat
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 613] 989 613 95769 1440 512 928 0 135168 0 0 polkitd
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 624] 0 624 367226 5258 5258 0 0 307200 0 -900 snapd
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 634] 0 634 4403 960 224 736 0 81920 0 0 systemd-logind
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 645] 0 645 117247 1440 512 928 0 151552 0 0 udisksd
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 729] 0 729 1537 480 32 448 0 53248 0 0 agetty
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 750] 110 750 4847 800 160 640 0 65536 0 0 chronyd
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 755] 110 755 2765 516 132 384 0 57344 0 0 chronyd
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 773] 0 773 27499 3232 2336 896 0 122880 0 0 unattended-upgr
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 790] 102 790 55627 1248 384 864 0 98304 0 0 rsyslogd
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 813] 0 813 97969 1280 416 864 0 143360 0 0 ModemManager
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 816] 0 816 1526 448 32 416 0 53248 0 0 agetty
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 984] 0 984 458276 2944 2944 0 0 229376 0 0 amazon-ssm-agen
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 1039] 0 1039 595910 4337 4337 0 0 372736 0 0 ssm-agent-worke
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 1318] 0 1318 423459 3664 3664 0 0 237568 0 0 ssm-document-wo
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 1343] 0 1343 404962 2944 2912 32 0 204800 0 0 ssm-document-wo
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 1350] 0 1350 423331 3008 3008 0 0 221184 0 0 ssm-document-wo
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 1360] 0 1360 700 448 0 448 0 49152 0 0 sh
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 1361] 0 1361 1968 576 64 512 0 57344 0 0 _script.sh
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 1367] 0 1367 441828 2944 2944 0 0 221184 0 0 ssm-document-wo
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 1386] 0 1386 700 448 0 448 0 49152 0 0 sh
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 1387] 0 1387 1968 608 96 512 0 57344 0 0 _script.sh
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 1423] 0 1423 53409 11317 10581 736 0 196608 0 0 python3
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 1438] 0 1438 404266 3296 2848 448 0 217088 0 0 updater
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 1488] 0 1488 38604 11398 10374 1024 0 212992 0 0 python3
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 1498] 0 1498 13479 4819 3955 864 0 143360 0 0 python3
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 1499] 0 1499 13769 4992 4128 864 0 147456 0 0 python3
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 1500] 42 1500 5815 1344 256 1088 0 90112 0 0 http
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 1501] 42 1501 5815 1248 224 1024 0 86016 0 0 http
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 1504] 42 1504 4019 928 128 800 0 81920 0 0 gpgv
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 1550] 42 1550 4019 566 150 416 0 77824 0 0 gpgv
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 1551] 42 1551 700 448 0 448 0 49152 0 0 apt-key
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 1556] 42 1556 6058 2912 1920 992 0 94208 0 0 store
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 1557] 42 1557 3187 768 96 672 0 69632 0 0 apt-config
Feb 02 16:45:40 ip-10-0-0-116 kernel: [ 1558] 0 1558 1945 515 67 448 0 53248 0 0 cron
Feb 02 16:45:40 ip-10-0-0-116 kernel: oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=/,mems_allowed=0,global_oom,task_memcg=/system.slice/snap.amazon-ssm-agent.amazon-ssm-agent.service,task=python3,pid=1488,uid=0
Feb 02 16:45:40 ip-10-0-0-116 kernel: Out of memory: Killed process 1488 (python3) total-vm:154416kB, anon-rss:41496kB, file-rss:4096kB, shmem-rss:0kB, UID:0 pgtables:208kB oom_score_adj:0
```

Reproduce the Software Baseline scan on an Ubuntu t3.nano instance and inspect the SSM Agent processes alongside the reported kernel OOM logs. Done means the scan completes without the SSM Agent crashing or exhausting the instance's memory.

Written by the indexing model from the issue text.