Hello,
Ever since I recently migrated from AMD Ryzen 3400g to 5700g and went
from 16GB to 32GB we get these:
Sep 8 16:40:44 knalp3 kernel: chrome: page allocation failure: order:7,
mode:0x40a20(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
Sep 8 16:40:44 knalp3 kernel: CPU: 0 PID: 156918 Comm: chrome Not
tainted 5.13.14 #5
Sep 8 16:40:44 knalp3 kernel: Hardware name: Gigabyte Technology Co.,
Ltd. X570 AORUS PRO/X570 AORUS PRO, BIOS F34 07/08/2021
Sep 8 16:40:44 knalp3 kernel: Call Trace:
Sep 8 16:40:44 knalp3 kernel: dump_stack+0x64/0x7c
Sep 8 16:40:44 knalp3 kernel: warn_alloc.cold+0x6f/0xd3
Sep 8 16:40:44 knalp3 kernel:
__alloc_pages_slowpath.constprop.0+0x6c3/0xa80
Sep 8 16:40:44 knalp3 kernel: ? get_page_from_freelist+0x223/0x9d0
Sep 8 16:40:44 knalp3 kernel: __alloc_pages+0x169/0x1d0
Sep 8 16:40:44 knalp3 kernel: cache_alloc_refill+0x58f/0x810
Sep 8 16:40:44 knalp3 kernel: ? _raw_spin_unlock+0xd/0x20
Sep 8 16:40:44 knalp3 kernel: kmem_cache_alloc+0x109/0x120
Sep 8 16:40:44 knalp3 kernel: p_dump_task_f+0x19/0xf0 [p_lkrg]
Sep 8 16:40:44 knalp3 kernel: p_wake_up_new_task_entry+0x6b/0xe0 [p_lkrg]
Sep 8 16:40:44 knalp3 kernel: pre_handler_kretprobe+0x8a/0x160
Sep 8 16:40:44 knalp3 kernel: opt_pre_handler+0x4a/0x80
Sep 8 16:40:44 knalp3 kernel: optimized_callback+0xbe/0xf0
Sep 8 16:40:44 knalp3 kernel: 0xffffffffc0076294
Sep 8 16:40:44 knalp3 kernel: ? wake_up_new_task+0x1/0x280
Sep 8 16:40:44 knalp3 kernel: ? kernel_clone+0xd6/0x380
Sep 8 16:40:44 knalp3 kernel: ? __do_sys_clone+0x60/0x80
Sep 8 16:40:44 knalp3 kernel: ? do_syscall_64+0x61/0x80
Sep 8 16:40:44 knalp3 kernel: ? entry_SYSCALL_64_after_hwframe+0x44/0xae
Sep 8 16:40:44 knalp3 kernel: Mem-Info:
Sep 8 16:40:44 knalp3 kernel: active_anon:5244 inactive_anon:1494070
isolated_anon:0#012 active_file:1098885 inactive_file:4703460
isolated_file:0#012 unevictable:639 dirty:948 writeback:0#012
slab_reclaimable:74606 slab_unreclaimable:245109#012 mapped:347626
shmem:160084 pagetables:16000 bounce:0#012 free:98085 free_pcp:4475
free_cma:0
Sep 8 16:40:44 knalp3 kernel: Node 0 active_anon:20976kB
inactive_anon:5976280kB active_file:4395540kB inactive_file:18813840kB
unevictable:2556kB isolated(anon):0kB isolated(file):0kB
mapped:1390504kB dirty:3792kB writeback:0kB shmem:640336kB shmem_thp:
0kB shmem_pmdmapped: 0kB anon_thp: 1681408kB writeback_tmp:0kB
kernel_stack:31376kB pagetables:64000kB all_unreclaimable? no
Sep 8 16:40:44 knalp3 kernel: DMA free:11264kB min:32kB low:44kB
high:56kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB
active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB
present:15984kB managed:15360kB mlocked:0kB bounce:0kB free_pcp:0kB
local_pcp:0kB free_cma:0kB
Sep 8 16:40:44 knalp3 kernel: lowmem_reserve[]: 0 2357 31506 31506
Sep 8 16:40:44 knalp3 kernel: DMA32 free:118968kB min:5052kB low:7464kB
high:9876kB reserved_highatomic:16384KB active_anon:124kB
inactive_anon:772432kB active_file:166476kB inactive_file:1282188kB
unevictable:16kB writepending:368kB present:2521312kB managed:2455776kB
mlocked:16kB bounce:0kB free_pcp:3528kB local_pcp:0kB free_cma:0kB
Sep 8 16:40:44 knalp3 kernel: lowmem_reserve[]: 0 0 29148 29148
Sep 8 16:40:44 knalp3 kernel: Normal free:262612kB min:64544kB
low:94388kB high:124232kB reserved_highatomic:0KB active_anon:20488kB
inactive_anon:5202876kB active_file:4228640kB inactive_file:17532192kB
unevictable:2540kB writepending:3424kB present:30379008kB
managed:29854648kB mlocked:68kB bounce:0kB free_pcp:14248kB
local_pcp:64kB free_cma:0kB
Sep 8 16:40:44 knalp3 kernel: lowmem_reserve[]: 0 0 0 0
Sep 8 16:40:44 knalp3 kernel: DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB
0*128kB 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 2*4096kB (M) = 11264kB
Sep 8 16:40:44 knalp3 kernel: DMA32: 494*4kB (UM) 132*8kB (UM) 194*16kB
(M) 710*32kB (M) 224*64kB (UM) 24*128kB (UM) 18*256kB (UM) 13*512kB (M)
6*1024kB (M) 9*2048kB (M) 9*4096kB (M) = 118968kB
Sep 8 16:40:44 knalp3 kernel: Normal: 570*4kB (UME) 2546*8kB (UME)
2503*16kB (UME) 1391*32kB (UME) 848*64kB (UME) 549*128kB (UME) 114*256kB
(U) 1*512kB (M) 0*1024kB 0*2048kB 0*4096kB = 261448kB
Sep 8 16:40:44 knalp3 kernel: Node 0 hugepages_total=0 hugepages_free=0
hugepages_surp=0 hugepages_size=2048kB
Sep 8 16:40:44 knalp3 kernel: 5963328 total pagecache pages
Sep 8 16:40:44 knalp3 kernel: 0 pages in swap cache
Sep 8 16:40:44 knalp3 kernel: Swap cache stats: add 170, delete 169,
find 61/83
Sep 8 16:40:44 knalp3 kernel: Free swap = 18873848kB
Sep 8 16:40:44 knalp3 kernel: Total swap = 18874360kB
Sep 8 16:40:44 knalp3 kernel: 8229076 pages RAM
Sep 8 16:40:44 knalp3 kernel: 0 pages HighMem/MovableOnly
Sep 8 16:40:44 knalp3 kernel: 147630 pages reserved
Sep 8 16:40:44 knalp3 kernel: [p_lkrg] p_alloc_ed_pids() returned NULL
for pid 156929 :(
This did not happen (unless there really was an OOM) when using 16GB of RAM.
The RAM is from AMD's HCL for AMD Ryzen 3000+. The RAM was tested with
memtest86 with no errors. (only a night, but still)
How can I find out what is going on?
Did I misconfigure my kernel?
Do I make to configure something to use the 'immense' amount of 32GB
with no issues?
Please let me know.
Kind regards,
Udo
Again:
Sep 9 15:06:03 surfplank2 rtkit-daemon[296496]: Successfully made
thread 311799 of process 311302 (/usr/lib64/firefox/firefox) owned by
'500' RT at priority 10.
Sep 9 15:12:41 knalp3 kernel: [120876.114705] warn_alloc: 2 callbacks
suppressed
Sep 9 15:12:41 knalp3 kernel: [120876.114708] Web Content: page
allocation failure: order:7, mode:0x40a20(GFP_ATOMIC|__GFP_COMP),
nodemask=(null)
Sep 9 15:12:41 knalp3 kernel: [120876.114715] CPU: 12 PID: 312097 Comm:
Web Content Not tainted 5.13.14 #5
Sep 9 15:12:41 knalp3 kernel: [120876.114717] Hardware name: Gigabyte
Technology Co., Ltd. X570 AORUS PRO/X570 AORUS PRO, BIOS F34 07/08/2021
Sep 9 15:12:41 knalp3 kernel: [120876.114718] Call Trace:
Sep 9 15:12:41 knalp3 kernel: [120876.114721] dump_stack+0x64/0x7c
Sep 9 15:12:41 knalp3 kernel: [120876.114725] warn_alloc.cold+0x6f/0xd3
Sep 9 15:12:41 knalp3 kernel: [120876.114728]
__alloc_pages_slowpath.constprop.0+0x6c3/0xa80
Sep 9 15:12:41 knalp3 kernel: [120876.114731] ?
get_page_from_freelist+0x223/0x9d0
Sep 9 15:12:41 knalp3 kernel: [120876.114733] __alloc_pages+0x169/0x1d0
Sep 9 15:12:41 knalp3 kernel: [120876.114735]
cache_alloc_refill+0x58f/0x810
Sep 9 15:12:41 knalp3 kernel: [120876.114737] ? _raw_spin_unlock+0xd/0x20
Sep 9 15:12:41 knalp3 kernel: [120876.114740] kmem_cache_alloc+0x109/0x120
Sep 9 15:12:41 knalp3 kernel: [120876.114742] p_dump_task_f+0x19/0xf0
[p_lkrg]
Sep 9 15:12:41 knalp3 kernel: [120876.114749]
p_wake_up_new_task_entry+0x6b/0xe0 [p_lkrg]
Sep 9 15:12:41 knalp3 kernel: [120876.114753]
pre_handler_kretprobe+0x8a/0x160
Sep 9 15:12:41 knalp3 kernel: [120876.114756] opt_pre_handler+0x4a/0x80
Sep 9 15:12:41 knalp3 kernel: [120876.114758] optimized_callback+0xbe/0xf0
Sep 9 15:12:41 knalp3 kernel: [120876.114761] 0xffffffffc0076294
Sep 9 15:12:41 knalp3 kernel: [120876.114763] ? wake_up_new_task+0x1/0x280
Sep 9 15:12:41 knalp3 kernel: [120876.114765] ? kernel_clone+0xd6/0x380
Sep 9 15:12:41 knalp3 kernel: [120876.114768] ? __do_sys_clone+0x60/0x80
Sep 9 15:12:41 knalp3 kernel: [120876.114769] ? do_syscall_64+0x61/0x80
Sep 9 15:12:41 knalp3 kernel: [120876.114771] ?
exit_to_user_mode_prepare+0x19/0xf0
Sep 9 15:12:41 knalp3 kernel: [120876.114773] ?
entry_SYSCALL_64_after_hwframe+0x44/0xae
Sep 9 15:12:41 knalp3 kernel: [120876.114775] Mem-Info:
Sep 9 15:12:41 knalp3 kernel: [120876.114776] active_anon:2937
inactive_anon:1070473 isolated_anon:0
Sep 9 15:12:41 knalp3 kernel: [120876.114776] active_file:2166685
inactive_file:4129380 isolated_file:0
Sep 9 15:12:41 knalp3 kernel: [120876.114776] unevictable:6793
dirty:773 writeback:0
Sep 9 15:12:41 knalp3 kernel: [120876.114776] slab_reclaimable:58285
slab_unreclaimable:200826
Sep 9 15:12:41 knalp3 kernel: [120876.114776] mapped:263480
shmem:109170 pagetables:10726 bounce:0
Sep 9 15:12:41 knalp3 kernel: [120876.114776] free:116342
free_pcp:7303 free_cma:0
Sep 9 15:12:41 knalp3 kernel: [120876.114779] Node 0
active_anon:11748kB inactive_anon:4281892kB active_file:8666740kB
inactive_file:16517520kB unevictable:27172kB isolated(anon):0kB
isolated(file):0kB mapped:1053920kB dirty:3092kB writeback:0kB
shmem:436680kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 13352
96kB writeback_tmp:0kB kernel_stack:26276kB pagetables:42904kB
all_unreclaimable? no
Sep 9 15:12:41 knalp3 kernel: [120876.114782] DMA free:11264kB min:32kB
low:44kB high:56kB reserved_highatomic:0KB active_anon:0kB
inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB
writepending:0kB present:15984kB managed:15360kB mlocked:0kB bounce:0kB
free_pcp:0kB local_pcp:0kB free_cma:0kB
Sep 9 15:12:41 knalp3 kernel: [120876.114785] lowmem_reserve[]: 0 2357
31506 31506
Sep 9 15:12:41 knalp3 kernel: [120876.114787] DMA32 free:118884kB
min:5052kB low:7464kB high:9876kB reserved_highatomic:26624KB
active_anon:4144kB inactive_anon:713188kB active_file:581608kB
inactive_file:865364kB unevictable:0kB writepending:208kB
present:2521312kB managed:2455776kB mlocked:0kB bounce:0kB free
_pcp:15980kB local_pcp:1344kB free_cma:0kB
Sep 9 15:12:41 knalp3 kernel: [120876.114790] lowmem_reserve[]: 0 0
29148 29148
Sep 9 15:12:41 knalp3 kernel: [120876.114791] Normal free:335220kB
min:64544kB low:94388kB high:124232kB reserved_highatomic:0KB
active_anon:7604kB inactive_anon:3569388kB active_file:8085132kB
inactive_file:15652668kB unevictable:27172kB writepending:2884kB
present:30379008kB managed:29854648kB mlocked:24700kB
bounce:0kB free_pcp:13080kB local_pcp:688kB free_cma:0kB
Sep 9 15:12:41 knalp3 kernel: [120876.114794] lowmem_reserve[]: 0 0 0 0
Sep 9 15:12:41 knalp3 kernel: [120876.114795] DMA: 0*4kB 0*8kB 0*16kB
0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 2*4096kB
(M) = 11264kB
Sep 9 15:12:41 knalp3 kernel: [120876.114801] DMA32: 2599*4kB (UM)
4207*8kB (UM) 781*16kB (M) 144*32kB (M) 114*64kB (UM) 38*128kB (UM)
20*256kB (UM) 15*512kB (UM) 2*1024kB (M) 5*2048kB (UM) 5*4096kB (M) =
118884kB
Sep 9 15:12:41 knalp3 kernel: [120876.114807] Normal: 2676*4kB (UME)
1619*8kB (UME) 5501*16kB (UME) 2818*32kB (UME) 867*64kB (UME) 455*128kB
(UME) 78*256kB (UM) 0*512kB 0*1024kB 0*2048kB 0*4096kB = 335544kB
Sep 9 15:12:41 knalp3 kernel: [120876.114813] Node 0 hugepages_total=0
hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
Sep 9 15:12:41 knalp3 kernel: [120876.114814] 6409485 total pagecache pages
Sep 9 15:12:41 knalp3 kernel: [120876.114815] 2 pages in swap cache
Sep 9 15:12:41 knalp3 kernel: [120876.114816] Swap cache stats: add
211, delete 209, find 61/84
Sep 9 15:12:41 knalp3 kernel: [120876.114817] Free swap = 18873080kB
Sep 9 15:12:41 knalp3 kernel: [120876.114818] Total swap = 18874360kB
Sep 9 15:12:41 knalp3 kernel: [120876.114819] 8229076 pages RAM
Sep 9 15:12:41 knalp3 kernel: [120876.114819] 0 pages HighMem/MovableOnly
Sep 9 15:12:41 knalp3 kernel: [120876.114820] 147630 pages reserved
Sep 9 15:12:41 knalp3 kernel: [120876.114820] [p_lkrg]
p_alloc_ed_pids() returned NULL for pid 312164 :(
Sep 9 15:12:41 knalp3 kernel: [120876.114822] [p_lkrg] <Exploit
Detection> Error[-1] when trying to add process[312164 |Web Content] for
tracking!
Sep 9 15:12:41 knalp3 kernel: [120876.184547] [p_lkrg]
p_alloc_ed_pids() returned NULL for pid 312165 :(
Sep 9 15:12:41 knalp3 kernel: [120876.184551] [p_lkrg] <Exploit
Detection> Error[-1] when trying to add process[312165 |Socket Thread]
for tracking!
Sep 9 15:12:41 knalp3 kernel: warn_alloc: 2 callbacks suppressed
Udo
On 08-09-2021 17:17, Udo van den Heuvel wrote:
> Hello,
>
> Ever since I recently migrated from AMD Ryzen 3400g to 5700g and went
> from 16GB to 32GB we get these:
>
> Sep 8 16:40:44 knalp3 kernel: chrome: page allocation failure: order:7,
> mode:0x40a20(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
> Sep 8 16:40:44 knalp3 kernel: CPU: 0 PID: 156918 Comm: chrome Not
> tainted 5.13.14 #5
> Sep 8 16:40:44 knalp3 kernel: Hardware name: Gigabyte Technology Co.,
> Ltd. X570 AORUS PRO/X570 AORUS PRO, BIOS F34 07/08/2021
> Sep 8 16:40:44 knalp3 kernel: Call Trace:
> Sep 8 16:40:44 knalp3 kernel: dump_stack+0x64/0x7c
> Sep 8 16:40:44 knalp3 kernel: warn_alloc.cold+0x6f/0xd3
> Sep 8 16:40:44 knalp3 kernel:
> __alloc_pages_slowpath.constprop.0+0x6c3/0xa80
> Sep 8 16:40:44 knalp3 kernel: ? get_page_from_freelist+0x223/0x9d0
> Sep 8 16:40:44 knalp3 kernel: __alloc_pages+0x169/0x1d0
> Sep 8 16:40:44 knalp3 kernel: cache_alloc_refill+0x58f/0x810
> Sep 8 16:40:44 knalp3 kernel: ? _raw_spin_unlock+0xd/0x20
> Sep 8 16:40:44 knalp3 kernel: kmem_cache_alloc+0x109/0x120
> Sep 8 16:40:44 knalp3 kernel: p_dump_task_f+0x19/0xf0 [p_lkrg]
> Sep 8 16:40:44 knalp3 kernel: p_wake_up_new_task_entry+0x6b/0xe0 [p_lkrg]
> Sep 8 16:40:44 knalp3 kernel: pre_handler_kretprobe+0x8a/0x160
> Sep 8 16:40:44 knalp3 kernel: opt_pre_handler+0x4a/0x80
> Sep 8 16:40:44 knalp3 kernel: optimized_callback+0xbe/0xf0
> Sep 8 16:40:44 knalp3 kernel: 0xffffffffc0076294
> Sep 8 16:40:44 knalp3 kernel: ? wake_up_new_task+0x1/0x280
> Sep 8 16:40:44 knalp3 kernel: ? kernel_clone+0xd6/0x380
> Sep 8 16:40:44 knalp3 kernel: ? __do_sys_clone+0x60/0x80
> Sep 8 16:40:44 knalp3 kernel: ? do_syscall_64+0x61/0x80
> Sep 8 16:40:44 knalp3 kernel: ? entry_SYSCALL_64_after_hwframe+0x44/0xae
> Sep 8 16:40:44 knalp3 kernel: Mem-Info:
> Sep 8 16:40:44 knalp3 kernel: active_anon:5244 inactive_anon:1494070
> isolated_anon:0#012 active_file:1098885 inactive_file:4703460
> isolated_file:0#012 unevictable:639 dirty:948 writeback:0#012
> slab_reclaimable:74606 slab_unreclaimable:245109#012 mapped:347626
> shmem:160084 pagetables:16000 bounce:0#012 free:98085 free_pcp:4475
> free_cma:0
> Sep 8 16:40:44 knalp3 kernel: Node 0 active_anon:20976kB
> inactive_anon:5976280kB active_file:4395540kB inactive_file:18813840kB
> unevictable:2556kB isolated(anon):0kB isolated(file):0kB
> mapped:1390504kB dirty:3792kB writeback:0kB shmem:640336kB shmem_thp:
> 0kB shmem_pmdmapped: 0kB anon_thp: 1681408kB writeback_tmp:0kB
> kernel_stack:31376kB pagetables:64000kB all_unreclaimable? no
> Sep 8 16:40:44 knalp3 kernel: DMA free:11264kB min:32kB low:44kB
> high:56kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB
> active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB
> present:15984kB managed:15360kB mlocked:0kB bounce:0kB free_pcp:0kB
> local_pcp:0kB free_cma:0kB
> Sep 8 16:40:44 knalp3 kernel: lowmem_reserve[]: 0 2357 31506 31506
> Sep 8 16:40:44 knalp3 kernel: DMA32 free:118968kB min:5052kB low:7464kB
> high:9876kB reserved_highatomic:16384KB active_anon:124kB
> inactive_anon:772432kB active_file:166476kB inactive_file:1282188kB
> unevictable:16kB writepending:368kB present:2521312kB managed:2455776kB
> mlocked:16kB bounce:0kB free_pcp:3528kB local_pcp:0kB free_cma:0kB
> Sep 8 16:40:44 knalp3 kernel: lowmem_reserve[]: 0 0 29148 29148
> Sep 8 16:40:44 knalp3 kernel: Normal free:262612kB min:64544kB
> low:94388kB high:124232kB reserved_highatomic:0KB active_anon:20488kB
> inactive_anon:5202876kB active_file:4228640kB inactive_file:17532192kB
> unevictable:2540kB writepending:3424kB present:30379008kB
> managed:29854648kB mlocked:68kB bounce:0kB free_pcp:14248kB
> local_pcp:64kB free_cma:0kB
> Sep 8 16:40:44 knalp3 kernel: lowmem_reserve[]: 0 0 0 0
> Sep 8 16:40:44 knalp3 kernel: DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB
> 0*128kB 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 2*4096kB (M) = 11264kB
> Sep 8 16:40:44 knalp3 kernel: DMA32: 494*4kB (UM) 132*8kB (UM) 194*16kB
> (M) 710*32kB (M) 224*64kB (UM) 24*128kB (UM) 18*256kB (UM) 13*512kB (M)
> 6*1024kB (M) 9*2048kB (M) 9*4096kB (M) = 118968kB
> Sep 8 16:40:44 knalp3 kernel: Normal: 570*4kB (UME) 2546*8kB (UME)
> 2503*16kB (UME) 1391*32kB (UME) 848*64kB (UME) 549*128kB (UME) 114*256kB
> (U) 1*512kB (M) 0*1024kB 0*2048kB 0*4096kB = 261448kB
> Sep 8 16:40:44 knalp3 kernel: Node 0 hugepages_total=0 hugepages_free=0
> hugepages_surp=0 hugepages_size=2048kB
> Sep 8 16:40:44 knalp3 kernel: 5963328 total pagecache pages
> Sep 8 16:40:44 knalp3 kernel: 0 pages in swap cache
> Sep 8 16:40:44 knalp3 kernel: Swap cache stats: add 170, delete 169,
> find 61/83
> Sep 8 16:40:44 knalp3 kernel: Free swap = 18873848kB
> Sep 8 16:40:44 knalp3 kernel: Total swap = 18874360kB
> Sep 8 16:40:44 knalp3 kernel: 8229076 pages RAM
> Sep 8 16:40:44 knalp3 kernel: 0 pages HighMem/MovableOnly
> Sep 8 16:40:44 knalp3 kernel: 147630 pages reserved
> Sep 8 16:40:44 knalp3 kernel: [p_lkrg] p_alloc_ed_pids() returned NULL
> for pid 156929 :(
>
> This did not happen (unless there really was an OOM) when using 16GB of
> RAM.
>
> The RAM is from AMD's HCL for AMD Ryzen 3000+. The RAM was tested with
> memtest86 with no errors. (only a night, but still)
>
> How can I find out what is going on?
> Did I misconfigure my kernel?
> Do I make to configure something to use the 'immense' amount of 32GB
> with no issues?
>
> Please let me know.
>
>
> Kind regards,
> Udo
On Wed, 8 Sep 2021, Udo van den Heuvel wrote:
> Hello,
>
> Ever since I recently migrated from AMD Ryzen 3400g to 5700g and went from
> 16GB to 32GB we get these:
>
> Sep 8 16:40:44 knalp3 kernel: chrome: page allocation failure: order:7,
> mode:0x40a20(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
> Sep 8 16:40:44 knalp3 kernel: CPU: 0 PID: 156918 Comm: chrome Not tainted
> 5.13.14 #5
> Sep 8 16:40:44 knalp3 kernel: Hardware name: Gigabyte Technology Co., Ltd.
> X570 AORUS PRO/X570 AORUS PRO, BIOS F34 07/08/2021
> Sep 8 16:40:44 knalp3 kernel: Call Trace:
> Sep 8 16:40:44 knalp3 kernel: dump_stack+0x64/0x7c
> Sep 8 16:40:44 knalp3 kernel: warn_alloc.cold+0x6f/0xd3
> Sep 8 16:40:44 knalp3 kernel: __alloc_pages_slowpath.constprop.0+0x6c3/0xa80
> Sep 8 16:40:44 knalp3 kernel: ? get_page_from_freelist+0x223/0x9d0
> Sep 8 16:40:44 knalp3 kernel: __alloc_pages+0x169/0x1d0
> Sep 8 16:40:44 knalp3 kernel: cache_alloc_refill+0x58f/0x810
> Sep 8 16:40:44 knalp3 kernel: ? _raw_spin_unlock+0xd/0x20
> Sep 8 16:40:44 knalp3 kernel: kmem_cache_alloc+0x109/0x120
> Sep 8 16:40:44 knalp3 kernel: p_dump_task_f+0x19/0xf0 [p_lkrg]
> Sep 8 16:40:44 knalp3 kernel: p_wake_up_new_task_entry+0x6b/0xe0 [p_lkrg]
I'm not sure of the Linux Kernel Runtiem Guard being used here, but
allocating order-7 memory with GFP_ATOMIC is not at all expected to
succeed. The page allocator does not have the ability to do reclaim or to
defragment memory using memory compaction in this context.
Suggest opening a bug for this with Openwall.
> Sep 8 16:40:44 knalp3 kernel: pre_handler_kretprobe+0x8a/0x160
> Sep 8 16:40:44 knalp3 kernel: opt_pre_handler+0x4a/0x80
> Sep 8 16:40:44 knalp3 kernel: optimized_callback+0xbe/0xf0
> Sep 8 16:40:44 knalp3 kernel: 0xffffffffc0076294
> Sep 8 16:40:44 knalp3 kernel: ? wake_up_new_task+0x1/0x280
> Sep 8 16:40:44 knalp3 kernel: ? kernel_clone+0xd6/0x380
> Sep 8 16:40:44 knalp3 kernel: ? __do_sys_clone+0x60/0x80
> Sep 8 16:40:44 knalp3 kernel: ? do_syscall_64+0x61/0x80
> Sep 8 16:40:44 knalp3 kernel: ? entry_SYSCALL_64_after_hwframe+0x44/0xae
> Sep 8 16:40:44 knalp3 kernel: Mem-Info:
> Sep 8 16:40:44 knalp3 kernel: active_anon:5244 inactive_anon:1494070
> isolated_anon:0#012 active_file:1098885 inactive_file:4703460
> isolated_file:0#012 unevictable:639 dirty:948 writeback:0#012
> slab_reclaimable:74606 slab_unreclaimable:245109#012 mapped:347626
> shmem:160084 pagetables:16000 bounce:0#012 free:98085 free_pcp:4475 free_cma:0
> Sep 8 16:40:44 knalp3 kernel: Node 0 active_anon:20976kB
> inactive_anon:5976280kB active_file:4395540kB inactive_file:18813840kB
> unevictable:2556kB isolated(anon):0kB isolated(file):0kB mapped:1390504kB
> dirty:3792kB writeback:0kB shmem:640336kB shmem_thp: 0kB shmem_pmdmapped: 0kB
> anon_thp: 1681408kB writeback_tmp:0kB kernel_stack:31376kB pagetables:64000kB
> all_unreclaimable? no
> Sep 8 16:40:44 knalp3 kernel: DMA free:11264kB min:32kB low:44kB high:56kB
> reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB active_file:0kB
> inactive_file:0kB unevictable:0kB writepending:0kB present:15984kB
> managed:15360kB mlocked:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB
> Sep 8 16:40:44 knalp3 kernel: lowmem_reserve[]: 0 2357 31506 31506
> Sep 8 16:40:44 knalp3 kernel: DMA32 free:118968kB min:5052kB low:7464kB
> high:9876kB reserved_highatomic:16384KB active_anon:124kB
> inactive_anon:772432kB active_file:166476kB inactive_file:1282188kB
> unevictable:16kB writepending:368kB present:2521312kB managed:2455776kB
> mlocked:16kB bounce:0kB free_pcp:3528kB local_pcp:0kB free_cma:0kB
> Sep 8 16:40:44 knalp3 kernel: lowmem_reserve[]: 0 0 29148 29148
> Sep 8 16:40:44 knalp3 kernel: Normal free:262612kB min:64544kB low:94388kB
> high:124232kB reserved_highatomic:0KB active_anon:20488kB
> inactive_anon:5202876kB active_file:4228640kB inactive_file:17532192kB
> unevictable:2540kB writepending:3424kB present:30379008kB managed:29854648kB
> mlocked:68kB bounce:0kB free_pcp:14248kB local_pcp:64kB free_cma:0kB
> Sep 8 16:40:44 knalp3 kernel: lowmem_reserve[]: 0 0 0 0
> Sep 8 16:40:44 knalp3 kernel: DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB
> 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 2*4096kB (M) = 11264kB
> Sep 8 16:40:44 knalp3 kernel: DMA32: 494*4kB (UM) 132*8kB (UM) 194*16kB (M)
> 710*32kB (M) 224*64kB (UM) 24*128kB (UM) 18*256kB (UM) 13*512kB (M) 6*1024kB
> (M) 9*2048kB (M) 9*4096kB (M) = 118968kB
> Sep 8 16:40:44 knalp3 kernel: Normal: 570*4kB (UME) 2546*8kB (UME) 2503*16kB
> (UME) 1391*32kB (UME) 848*64kB (UME) 549*128kB (UME) 114*256kB (U) 1*512kB (M)
> 0*1024kB 0*2048kB 0*4096kB = 261448kB
> Sep 8 16:40:44 knalp3 kernel: Node 0 hugepages_total=0 hugepages_free=0
> hugepages_surp=0 hugepages_size=2048kB
> Sep 8 16:40:44 knalp3 kernel: 5963328 total pagecache pages
> Sep 8 16:40:44 knalp3 kernel: 0 pages in swap cache
> Sep 8 16:40:44 knalp3 kernel: Swap cache stats: add 170, delete 169, find
> 61/83
> Sep 8 16:40:44 knalp3 kernel: Free swap = 18873848kB
> Sep 8 16:40:44 knalp3 kernel: Total swap = 18874360kB
> Sep 8 16:40:44 knalp3 kernel: 8229076 pages RAM
> Sep 8 16:40:44 knalp3 kernel: 0 pages HighMem/MovableOnly
> Sep 8 16:40:44 knalp3 kernel: 147630 pages reserved
> Sep 8 16:40:44 knalp3 kernel: [p_lkrg] p_alloc_ed_pids() returned NULL for
> pid 156929 :(
>
> This did not happen (unless there really was an OOM) when using 16GB of RAM.
>
> The RAM is from AMD's HCL for AMD Ryzen 3000+. The RAM was tested with
> memtest86 with no errors. (only a night, but still)
>
> How can I find out what is going on?
> Did I misconfigure my kernel?
> Do I make to configure something to use the 'immense' amount of 32GB with no
> issues?
>
> Please let me know.
>
>
> Kind regards,
> Udo
>
People,
Why do these pagefaults start to occur when a machine goes from 16 to 32 GB?
Does the amount of CPU threads matter?
Why doesn't vm.min_free_kbytes really help yet?
Why doesn't the kernel simply use a bit of the unused memory?
Why isn't the mm infrastructure not so 'automagic' as it once appeared?
Please explain as it might help to fix the allocation issue.
Udo
PS:
# free
total used free shared buff/cache
available
Mem: 32325764 6612532 1365524 430068 24347708
24110776
Swap: 18874360 331776 18542584
On 10-09-2021 07:46, Udo van den Heuvel wrote:
> Again:
>
> Sep 9 15:06:03 surfplank2 rtkit-daemon[296496]: Successfully made
> thread 311799 of process 311302 (/usr/lib64/firefox/firefox) owned by
> '500' RT at priority 10.
> Sep 9 15:12:41 knalp3 kernel: [120876.114705] warn_alloc: 2 callbacks
> suppressed
> Sep 9 15:12:41 knalp3 kernel: [120876.114708] Web Content: page
> allocation failure: order:7, mode:0x40a20(GFP_ATOMIC|__GFP_COMP),
> nodemask=(null)
> Sep 9 15:12:41 knalp3 kernel: [120876.114715] CPU: 12 PID: 312097 Comm:
> Web Content Not tainted 5.13.14 #5
> Sep 9 15:12:41 knalp3 kernel: [120876.114717] Hardware name: Gigabyte
> Technology Co., Ltd. X570 AORUS PRO/X570 AORUS PRO, BIOS F34 07/08/2021
> Sep 9 15:12:41 knalp3 kernel: [120876.114718] Call Trace:
> Sep 9 15:12:41 knalp3 kernel: [120876.114721] dump_stack+0x64/0x7c
> Sep 9 15:12:41 knalp3 kernel: [120876.114725] warn_alloc.cold+0x6f/0xd3
> Sep 9 15:12:41 knalp3 kernel: [120876.114728]
> __alloc_pages_slowpath.constprop.0+0x6c3/0xa80
> Sep 9 15:12:41 knalp3 kernel: [120876.114731] ?
> get_page_from_freelist+0x223/0x9d0
> Sep 9 15:12:41 knalp3 kernel: [120876.114733] __alloc_pages+0x169/0x1d0
> Sep 9 15:12:41 knalp3 kernel: [120876.114735]
> cache_alloc_refill+0x58f/0x810
> Sep 9 15:12:41 knalp3 kernel: [120876.114737] ? _raw_spin_unlock+0xd/0x20
> Sep 9 15:12:41 knalp3 kernel: [120876.114740]
> kmem_cache_alloc+0x109/0x120
> Sep 9 15:12:41 knalp3 kernel: [120876.114742] p_dump_task_f+0x19/0xf0
> [p_lkrg]
> Sep 9 15:12:41 knalp3 kernel: [120876.114749]
> p_wake_up_new_task_entry+0x6b/0xe0 [p_lkrg]
> Sep 9 15:12:41 knalp3 kernel: [120876.114753]
> pre_handler_kretprobe+0x8a/0x160
> Sep 9 15:12:41 knalp3 kernel: [120876.114756] opt_pre_handler+0x4a/0x80
> Sep 9 15:12:41 knalp3 kernel: [120876.114758]
> optimized_callback+0xbe/0xf0
> Sep 9 15:12:41 knalp3 kernel: [120876.114761] 0xffffffffc0076294
> Sep 9 15:12:41 knalp3 kernel: [120876.114763] ?
> wake_up_new_task+0x1/0x280
> Sep 9 15:12:41 knalp3 kernel: [120876.114765] ? kernel_clone+0xd6/0x380
> Sep 9 15:12:41 knalp3 kernel: [120876.114768] ? __do_sys_clone+0x60/0x80
> Sep 9 15:12:41 knalp3 kernel: [120876.114769] ? do_syscall_64+0x61/0x80
> Sep 9 15:12:41 knalp3 kernel: [120876.114771] ?
> exit_to_user_mode_prepare+0x19/0xf0
> Sep 9 15:12:41 knalp3 kernel: [120876.114773] ?
> entry_SYSCALL_64_after_hwframe+0x44/0xae
> Sep 9 15:12:41 knalp3 kernel: [120876.114775] Mem-Info:
> Sep 9 15:12:41 knalp3 kernel: [120876.114776] active_anon:2937
> inactive_anon:1070473 isolated_anon:0
> Sep 9 15:12:41 knalp3 kernel: [120876.114776] active_file:2166685
> inactive_file:4129380 isolated_file:0
> Sep 9 15:12:41 knalp3 kernel: [120876.114776] unevictable:6793
> dirty:773 writeback:0
> Sep 9 15:12:41 knalp3 kernel: [120876.114776] slab_reclaimable:58285
> slab_unreclaimable:200826
> Sep 9 15:12:41 knalp3 kernel: [120876.114776] mapped:263480
> shmem:109170 pagetables:10726 bounce:0
> Sep 9 15:12:41 knalp3 kernel: [120876.114776] free:116342
> free_pcp:7303 free_cma:0
> Sep 9 15:12:41 knalp3 kernel: [120876.114779] Node 0
> active_anon:11748kB inactive_anon:4281892kB active_file:8666740kB
> inactive_file:16517520kB unevictable:27172kB isolated(anon):0kB
> isolated(file):0kB mapped:1053920kB dirty:3092kB writeback:0kB
> shmem:436680kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 13352
> 96kB writeback_tmp:0kB kernel_stack:26276kB pagetables:42904kB
> all_unreclaimable? no
> Sep 9 15:12:41 knalp3 kernel: [120876.114782] DMA free:11264kB min:32kB
> low:44kB high:56kB reserved_highatomic:0KB active_anon:0kB
> inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB
> writepending:0kB present:15984kB managed:15360kB mlocked:0kB bounce:0kB
> free_pcp:0kB local_pcp:0kB free_cma:0kB
> Sep 9 15:12:41 knalp3 kernel: [120876.114785] lowmem_reserve[]: 0 2357
> 31506 31506
> Sep 9 15:12:41 knalp3 kernel: [120876.114787] DMA32 free:118884kB
> min:5052kB low:7464kB high:9876kB reserved_highatomic:26624KB
> active_anon:4144kB inactive_anon:713188kB active_file:581608kB
> inactive_file:865364kB unevictable:0kB writepending:208kB
> present:2521312kB managed:2455776kB mlocked:0kB bounce:0kB free
> _pcp:15980kB local_pcp:1344kB free_cma:0kB
> Sep 9 15:12:41 knalp3 kernel: [120876.114790] lowmem_reserve[]: 0 0
> 29148 29148
> Sep 9 15:12:41 knalp3 kernel: [120876.114791] Normal free:335220kB
> min:64544kB low:94388kB high:124232kB reserved_highatomic:0KB
> active_anon:7604kB inactive_anon:3569388kB active_file:8085132kB
> inactive_file:15652668kB unevictable:27172kB writepending:2884kB
> present:30379008kB managed:29854648kB mlocked:24700kB
> bounce:0kB free_pcp:13080kB local_pcp:688kB free_cma:0kB
> Sep 9 15:12:41 knalp3 kernel: [120876.114794] lowmem_reserve[]: 0 0 0 0
> Sep 9 15:12:41 knalp3 kernel: [120876.114795] DMA: 0*4kB 0*8kB 0*16kB
> 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 2*4096kB
> (M) = 11264kB
> Sep 9 15:12:41 knalp3 kernel: [120876.114801] DMA32: 2599*4kB (UM)
> 4207*8kB (UM) 781*16kB (M) 144*32kB (M) 114*64kB (UM) 38*128kB (UM)
> 20*256kB (UM) 15*512kB (UM) 2*1024kB (M) 5*2048kB (UM) 5*4096kB (M) =
> 118884kB
> Sep 9 15:12:41 knalp3 kernel: [120876.114807] Normal: 2676*4kB (UME)
> 1619*8kB (UME) 5501*16kB (UME) 2818*32kB (UME) 867*64kB (UME) 455*128kB
> (UME) 78*256kB (UM) 0*512kB 0*1024kB 0*2048kB 0*4096kB = 335544kB
> Sep 9 15:12:41 knalp3 kernel: [120876.114813] Node 0 hugepages_total=0
> hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
> Sep 9 15:12:41 knalp3 kernel: [120876.114814] 6409485 total pagecache
> pages
> Sep 9 15:12:41 knalp3 kernel: [120876.114815] 2 pages in swap cache
> Sep 9 15:12:41 knalp3 kernel: [120876.114816] Swap cache stats: add
> 211, delete 209, find 61/84
> Sep 9 15:12:41 knalp3 kernel: [120876.114817] Free swap = 18873080kB
> Sep 9 15:12:41 knalp3 kernel: [120876.114818] Total swap = 18874360kB
> Sep 9 15:12:41 knalp3 kernel: [120876.114819] 8229076 pages RAM
> Sep 9 15:12:41 knalp3 kernel: [120876.114819] 0 pages HighMem/MovableOnly
> Sep 9 15:12:41 knalp3 kernel: [120876.114820] 147630 pages reserved
> Sep 9 15:12:41 knalp3 kernel: [120876.114820] [p_lkrg]
> p_alloc_ed_pids() returned NULL for pid 312164 :(
> Sep 9 15:12:41 knalp3 kernel: [120876.114822] [p_lkrg] <Exploit
> Detection> Error[-1] when trying to add process[312164 |Web Content] for
> tracking!
> Sep 9 15:12:41 knalp3 kernel: [120876.184547] [p_lkrg]
> p_alloc_ed_pids() returned NULL for pid 312165 :(
> Sep 9 15:12:41 knalp3 kernel: [120876.184551] [p_lkrg] <Exploit
> Detection> Error[-1] when trying to add process[312165 |Socket Thread]
> for tracking!
> Sep 9 15:12:41 knalp3 kernel: warn_alloc: 2 callbacks suppressed
>
>
>
> Udo
>
>
> On 08-09-2021 17:17, Udo van den Heuvel wrote:
>> Hello,
>>
>> Ever since I recently migrated from AMD Ryzen 3400g to 5700g and went
>> from 16GB to 32GB we get these:
>>
>> Sep 8 16:40:44 knalp3 kernel: chrome: page allocation failure:
>> order:7, mode:0x40a20(GFP_ATOMIC|__GFP_COMP), nodemask=(null)
>> Sep 8 16:40:44 knalp3 kernel: CPU: 0 PID: 156918 Comm: chrome Not
>> tainted 5.13.14 #5
>> Sep 8 16:40:44 knalp3 kernel: Hardware name: Gigabyte Technology Co.,
>> Ltd. X570 AORUS PRO/X570 AORUS PRO, BIOS F34 07/08/2021
>> Sep 8 16:40:44 knalp3 kernel: Call Trace:
>> Sep 8 16:40:44 knalp3 kernel: dump_stack+0x64/0x7c
>> Sep 8 16:40:44 knalp3 kernel: warn_alloc.cold+0x6f/0xd3
>> Sep 8 16:40:44 knalp3 kernel:
>> __alloc_pages_slowpath.constprop.0+0x6c3/0xa80
>> Sep 8 16:40:44 knalp3 kernel: ? get_page_from_freelist+0x223/0x9d0
>> Sep 8 16:40:44 knalp3 kernel: __alloc_pages+0x169/0x1d0
>> Sep 8 16:40:44 knalp3 kernel: cache_alloc_refill+0x58f/0x810
>> Sep 8 16:40:44 knalp3 kernel: ? _raw_spin_unlock+0xd/0x20
>> Sep 8 16:40:44 knalp3 kernel: kmem_cache_alloc+0x109/0x120
>> Sep 8 16:40:44 knalp3 kernel: p_dump_task_f+0x19/0xf0 [p_lkrg]
>> Sep 8 16:40:44 knalp3 kernel: p_wake_up_new_task_entry+0x6b/0xe0
>> [p_lkrg]
>> Sep 8 16:40:44 knalp3 kernel: pre_handler_kretprobe+0x8a/0x160
>> Sep 8 16:40:44 knalp3 kernel: opt_pre_handler+0x4a/0x80
>> Sep 8 16:40:44 knalp3 kernel: optimized_callback+0xbe/0xf0
>> Sep 8 16:40:44 knalp3 kernel: 0xffffffffc0076294
>> Sep 8 16:40:44 knalp3 kernel: ? wake_up_new_task+0x1/0x280
>> Sep 8 16:40:44 knalp3 kernel: ? kernel_clone+0xd6/0x380
>> Sep 8 16:40:44 knalp3 kernel: ? __do_sys_clone+0x60/0x80
>> Sep 8 16:40:44 knalp3 kernel: ? do_syscall_64+0x61/0x80
>> Sep 8 16:40:44 knalp3 kernel: ? entry_SYSCALL_64_after_hwframe+0x44/0xae
>> Sep 8 16:40:44 knalp3 kernel: Mem-Info:
>> Sep 8 16:40:44 knalp3 kernel: active_anon:5244 inactive_anon:1494070
>> isolated_anon:0#012 active_file:1098885 inactive_file:4703460
>> isolated_file:0#012 unevictable:639 dirty:948 writeback:0#012
>> slab_reclaimable:74606 slab_unreclaimable:245109#012 mapped:347626
>> shmem:160084 pagetables:16000 bounce:0#012 free:98085 free_pcp:4475
>> free_cma:0
>> Sep 8 16:40:44 knalp3 kernel: Node 0 active_anon:20976kB
>> inactive_anon:5976280kB active_file:4395540kB inactive_file:18813840kB
>> unevictable:2556kB isolated(anon):0kB isolated(file):0kB
>> mapped:1390504kB dirty:3792kB writeback:0kB shmem:640336kB shmem_thp:
>> 0kB shmem_pmdmapped: 0kB anon_thp: 1681408kB writeback_tmp:0kB
>> kernel_stack:31376kB pagetables:64000kB all_unreclaimable? no
>> Sep 8 16:40:44 knalp3 kernel: DMA free:11264kB min:32kB low:44kB
>> high:56kB reserved_highatomic:0KB active_anon:0kB inactive_anon:0kB
>> active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB
>> present:15984kB managed:15360kB mlocked:0kB bounce:0kB free_pcp:0kB
>> local_pcp:0kB free_cma:0kB
>> Sep 8 16:40:44 knalp3 kernel: lowmem_reserve[]: 0 2357 31506 31506
>> Sep 8 16:40:44 knalp3 kernel: DMA32 free:118968kB min:5052kB
>> low:7464kB high:9876kB reserved_highatomic:16384KB active_anon:124kB
>> inactive_anon:772432kB active_file:166476kB inactive_file:1282188kB
>> unevictable:16kB writepending:368kB present:2521312kB
>> managed:2455776kB mlocked:16kB bounce:0kB free_pcp:3528kB
>> local_pcp:0kB free_cma:0kB
>> Sep 8 16:40:44 knalp3 kernel: lowmem_reserve[]: 0 0 29148 29148
>> Sep 8 16:40:44 knalp3 kernel: Normal free:262612kB min:64544kB
>> low:94388kB high:124232kB reserved_highatomic:0KB active_anon:20488kB
>> inactive_anon:5202876kB active_file:4228640kB inactive_file:17532192kB
>> unevictable:2540kB writepending:3424kB present:30379008kB
>> managed:29854648kB mlocked:68kB bounce:0kB free_pcp:14248kB
>> local_pcp:64kB free_cma:0kB
>> Sep 8 16:40:44 knalp3 kernel: lowmem_reserve[]: 0 0 0 0
>> Sep 8 16:40:44 knalp3 kernel: DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB
>> 0*128kB 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (M) 2*4096kB (M) = 11264kB
>> Sep 8 16:40:44 knalp3 kernel: DMA32: 494*4kB (UM) 132*8kB (UM)
>> 194*16kB (M) 710*32kB (M) 224*64kB (UM) 24*128kB (UM) 18*256kB (UM)
>> 13*512kB (M) 6*1024kB (M) 9*2048kB (M) 9*4096kB (M) = 118968kB
>> Sep 8 16:40:44 knalp3 kernel: Normal: 570*4kB (UME) 2546*8kB (UME)
>> 2503*16kB (UME) 1391*32kB (UME) 848*64kB (UME) 549*128kB (UME)
>> 114*256kB (U) 1*512kB (M) 0*1024kB 0*2048kB 0*4096kB = 261448kB
>> Sep 8 16:40:44 knalp3 kernel: Node 0 hugepages_total=0
>> hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
>> Sep 8 16:40:44 knalp3 kernel: 5963328 total pagecache pages
>> Sep 8 16:40:44 knalp3 kernel: 0 pages in swap cache
>> Sep 8 16:40:44 knalp3 kernel: Swap cache stats: add 170, delete 169,
>> find 61/83
>> Sep 8 16:40:44 knalp3 kernel: Free swap = 18873848kB
>> Sep 8 16:40:44 knalp3 kernel: Total swap = 18874360kB
>> Sep 8 16:40:44 knalp3 kernel: 8229076 pages RAM
>> Sep 8 16:40:44 knalp3 kernel: 0 pages HighMem/MovableOnly
>> Sep 8 16:40:44 knalp3 kernel: 147630 pages reserved
>> Sep 8 16:40:44 knalp3 kernel: [p_lkrg] p_alloc_ed_pids() returned
>> NULL for pid 156929 :(
>>
>> This did not happen (unless there really was an OOM) when using 16GB
>> of RAM.
>>
>> The RAM is from AMD's HCL for AMD Ryzen 3000+. The RAM was tested with
>> memtest86 with no errors. (only a night, but still)
>>
>> How can I find out what is going on?
>> Did I misconfigure my kernel?
>> Do I make to configure something to use the 'immense' amount of 32GB
>> with no issues?
>>
>> Please let me know.
>>
>>
>> Kind regards,
>> Udo
>