nixos-anywhere
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Out of memory with oracle amd 1G free tier
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+ printf %s\n 6.1 6.5.0-1023-oracle
+ kexecSyscallFlags=--kexec-syscall-auto
+ sh -c '/root/kexec/kexec/kexec' --load '/root/kexec/kexec/bzImage' --kexec-syscall-auto --initrd='/root/kexec/kexec/initrd' --no-checks --command-line 'init=/nix/store/w5967zp4vrgi8hhsyzb6xv6pv02182j2-nixos-system-nixos-installer-24.05pre-git/init console=tty0 console=ttyS0,115200 root=fstab loglevel=4'
kexec failed, dumping dmesg
Killed
+ echo kexec failed, dumping dmesg
+ dmesg
+ tail -n 100
[ 1549.283759] PEFILE: Unsigned PE binary
[ 1570.685639] kexec invoked oom-killer: gfp_mask=0x100cc2(GFP_HIGHUSER), order=0, oom_score_adj=0
[ 1570.685651] CPU: 0 PID: 3090 Comm: kexec Not tainted 6.5.0-1023-oracle #23~22.04.1-Ubuntu
[ 1570.685657] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.6.6 08/22/2023
[ 1570.685661] Call Trace:
[ 1570.685665] <TASK>
[ 1570.685669] dump_stack_lvl+0x48/0x70
[ 1570.685711] dump_stack+0x10/0x20
[ 1570.685716] dump_header+0x50/0x270
[ 1570.685724] oom_kill_process+0x10c/0x1b0
[ 1570.685729] out_of_memory+0x109/0x350
[ 1570.685735] __alloc_pages_may_oom+0x114/0x1e0
[ 1570.685743] __alloc_pages_slowpath.constprop.0+0x4b1/0x9a0
[ 1570.685751] __alloc_pages+0x2fc/0x330
[ 1570.685758] alloc_pages+0x95/0x1a0
[ 1570.685764] kimage_alloc_pages+0x35/0xf0
[ 1570.685770] kimage_alloc_page+0xc0/0x310
[ 1570.685777] kimage_load_normal_segment+0xe9/0x270
[ 1570.685783] kimage_load_segment+0x17/0x30
[ 1570.685788] __do_sys_kexec_file_load+0x1fc/0x2b0
[ 1570.685795] __x64_sys_kexec_file_load+0x20/0x40
[ 1570.685800] x64_sys_call+0x2142/0x2570
[ 1570.685805] do_syscall_64+0x56/0x90
[ 1570.685811] ? srso_return_thunk+0x5/0x10
[ 1570.685817] ? exc_page_fault+0x95/0x190
[ 1570.685823] entry_SYSCALL_64_after_hwframe+0x73/0xdd
[ 1570.685829] RIP: 0033:0x426efd
[ 1570.685854] Code: Unable to access opcode bytes at 0x426ed3.
[ 1570.685856] RSP: 002b:00007fff125d9540 EFLAGS: 00000212 ORIG_RAX: 0000000000000140
[ 1570.685863] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000426efd
[ 1570.685866] RDX: 0000000000000098 RSI: 0000000000000004 RDI: 0000000000000003
[ 1570.685869] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000
[ 1570.685872] R10: 00007a2f7dba6040 R11: 0000000000000212 R12: 0000000000000003
[ 1570.685875] R13: 00007fff125d9838 R14: 00007fff125d95c0 R15: 0000000000000004
[ 1570.685883] </TASK>
[ 1570.685886] Mem-Info:
[ 1570.685889] active_anon:11696 inactive_anon:12790 isolated_anon:0
active_file:14 inactive_file:5 isolated_file:0
unevictable:3343 dirty:3 writeback:0
slab_reclaimable:5757 slab_unreclaimable:9108
mapped:2884 shmem:3015 pagetables:653
sec_pagetables:0 bounce:0
kernel_misc_reclaimable:0
free:12558 free_pcp:307 free_cma:0
[ 1570.685898] Node 0 active_anon:46784kB inactive_anon:51160kB active_file:56kB inactive_file:20kB unevictable:13372kB isolated(anon):0kB isolated(file):0kB mapped:11536kB dirty:12kB writeback:0kB shmem:12060kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB kernel_stack:2528kB pagetables:2612kB sec_pagetables:0kB all_unreclaimable? no
[ 1570.685907] Node 0 DMA free:4116kB boost:0kB min:712kB low:888kB high:1064kB reserved_highatomic:0KB active_anon:0kB inactive_anon:96kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15028kB managed:14392kB mlocked:0kB bounce:0kB free_pcp:12kB local_pcp:4kB free_cma:0kB
[ 1570.685916] lowmem_reserve[]: 0 873 873 873 873
[ 1570.685929] Node 0 DMA32 free:46116kB boost:0kB min:44340kB low:55424kB high:66508kB reserved_highatomic:2048KB active_anon:31372kB inactive_anon:66476kB active_file:72kB inactive_file:4kB unevictable:13372kB writepending:12kB present:1027952kB managed:955844kB mlocked:13372kB bounce:0kB free_pcp:1216kB local_pcp:460kB free_cma:0kB
[ 1570.685939] lowmem_reserve[]: 0 0 0 0 0
[ 1570.686004] Node 0 DMA: 5*4kB (UM) 6*8kB (UM) 1*16kB (M) 4*32kB (UM) 1*64kB (U) 2*128kB (UM) 2*256kB (UM) 2*512kB (UM) 2*1024kB (M) 0*2048kB 0*4096kB = 4116kB
[ 1570.686047] Node 0 DMA32: 1573*4kB (UMEH) 1038*8kB (UMEH) 640*16kB (UMEH) 321*32kB (UMEH) 126*64kB (UMEH) 19*128kB (UMH) 2*256kB (H) 0*512kB 0*1024kB 0*2048kB 0*4096kB = 46116kB
[ 1570.686086] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB
[ 1570.686090] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
[ 1570.686093] 5910 total pagecache pages
[ 1570.686096] 0 pages in swap cache
[ 1570.686098] Free swap = 0kB
[ 1570.686100] Total swap = 0kB
[ 1570.686103] 260745 pages RAM
[ 1570.686105] 0 pages HighMem/MovableOnly
[ 1570.686107] 18186 pages reserved
[ 1570.686109] 0 pages hwpoisoned
[ 1570.686111] Tasks state (memory values in pages):
[ 1570.686113] [ pid ] uid tgid total_vm rss pgtables_bytes swapents oom_score_adj name
[ 1570.686119] [ 287] 0 287 16072 1312 94208 0 -250 systemd-journal
[ 1570.686126] [ 315] 0 315 6627 1466 81920 0 -1000 systemd-udevd
[ 1570.686133] [ 433] 109 433 2026 864 57344 0 0 rpcbind
[ 1570.686138] [ 434] 104 434 22341 1216 73728 0 0 systemd-timesyn
[ 1570.686144] [ 469] 101 469 4032 1248 69632 0 0 systemd-network
[ 1570.686149] [ 471] 102 471 6385 2038 98304 0 0 systemd-resolve
[ 1570.686155] [ 680] 103 680 2195 992 57344 0 -900 dbus-daemon
[ 1570.686160] [ 681] 0 681 3231 592 65536 0 0 iscsid
[ 1570.686165] [ 682] 0 682 3357 3284 65536 0 -17 iscsid
[ 1570.686171] [ 687] 0 687 58626 928 86016 0 0 polkitd
[ 1570.686171] [ 687] 0 687 58626 928 86016 0 0 polkitd
[ 1570.686176] [ 691] 0 691 366867 3298 262144 0 -900 snapd
[ 1570.686181] [ 692] 0 692 3875 1248 69632 0 0 systemd-logind
[ 1570.686186] [ 695] 0 695 98124 1600 139264 0 0 udisksd
[ 1570.686191] [ 752] 0 752 79469 1248 118784 0 0 ModemManager
[ 1570.686196] [ 755] 0 755 799 480 49152 0 0 agetty
[ 1570.686201] [ 767] 0 767 810 512 49152 0 0 agetty
[ 1570.686206] [ 802] 0 802 3860 1888 69632 0 -1000 sshd
[ 1570.686211] [ 967] 584788 967 309358 1293 122880 0 0 agent
[ 1570.686216] [ 974] 584788 974 309264 1047 122880 0 0 updater
[ 1570.686221] [ 1013] 0 1013 4231 2048 73728 0 0 sshd
[ 1570.686226] [ 1023] 584788 1023 309668 1839 131072 0 0 gomon
[ 1570.686231] [ 1035] 584788 1035 310897 1586 139264 0 0 oci-wlp
[ 1570.686236] [ 1037] 1001 1037 4267 1376 73728 0 0 systemd
[ 1570.686241] [ 1039] 1001 1039 26167 1373 102400 0 0 (sd-pam)
[ 1570.686247] [ 1114] 1001 1114 4371 1723 73728 0 0 sshd
[ 1570.686252] [ 2446] 0 2446 4302 2141 77824 0 0 sshd
[ 1570.686257] [ 2449] 0 2449 4268 1408 73728 0 0 systemd
[ 1570.686262] [ 2450] 0 2450 26199 1374 102400 0 0 (sd-pam)
[ 1570.686267] [ 3016] 0 3016 4232 2048 73728 0 0 sshd
[ 1570.686272] [ 3059] 1001 3059 4305 1692 73728 0 0 sshd
[ 1570.686277] [ 3060] 1001 3060 1229 544 49152 0 0 bash
[ 1570.686282] [ 3064] 1001 3064 2234 800 69632 0 0 sudo
[ 1570.686286] [ 3065] 0 3065 723 448 45056 0 0 run
[ 1570.686291] [ 3089] 0 3089 723 416 45056 0 0 sh
[ 1570.686296] [ 3090] 0 3090 3082 2720 65536 0 0 kexec
[ 1570.686301] oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=/,mems_allowed=0,global_oom,task_memcg=/user.slice/user-1001.slice/session-19.scope,task=kexec,pid=3090,uid=0
[ 1570.686477] Out of memory: Killed process 3090 (kexec) total-vm:12328kB, anon-rss:10880kB, file-rss:0kB, shmem-rss:0kB, UID:0 pgtables:64kB oom_score_adj:0
+ exit 1
+ cleanup
+ rm -rf /root/kexec/kexec/tmp.CzCiBSkk3h
+ rm -rf /tmp/tmp.fjjZC83oJ1
Try stopping useless preinstalled services first to reclaim some memory; I've been successful in kexec'ing this way.
If you create the instance with an Oracle Linux 9 image, it will allow kexec to complete without going oom.
