Code: Select all
$ ./crash_me
Hello, World!
Floating point exception (core dumped)
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$ ulimit -c unlimited
$ ./crash_me
Hello, World!
Floating point exception (core dumped)
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$ ll core
-rw------- 1 sander sander 380928 Nov 26 10:47 core
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$ gdb crash_me core
GNU gdb (Ubuntu 8.1.1-0ubuntu1) 8.1.1
...
Reading symbols from crash_me...(no debugging symbols found)...done.
[New LWP 27446]
Core was generated by `./crash_me'.
Program terminated with signal SIGFPE, Arithmetic exception.
#0 0x000055b5af35c660 in main ()
(gdb)
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$ ./mem_eater
Hello, World!
Killed
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$ sudo grep mem_eater /var/log/syslog
Nov 26 11:02:58 brixit kernel: [252348.826442] [ 922115] 1000 922115 4962939054 196375 909447168 6696 0 mem_eater
Nov 26 11:02:58 brixit kernel: [252348.826461] oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=/,mems_allowed=0,global_oom,task_memcg=/user.slice/user-1000.slice/session-12388.scope,task=mem_eater,pid=922115,uid=1000
Nov 26 11:02:58 brixit kernel: [252348.826475] Out of memory: Killed process 922115 (mem_eater) total-vm:19851756216kB, anon-rss:785496kB, file-rss:4kB, shmem-rss:0kB, UID:1000 pgtables:888132kB oom_score_adj:0
Nov 26 11:02:58 brixit kernel: [252349.247163] oom_reaper: reaped process 922115 (mem_eater), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB
Code: Select all
Out of memory: Killed process 922115 (mem_eater) total-vm:19851756216kB, anon-rss:785496kB
Code: Select all
-- Logs begin at Sun 2020-12-13 13:52:29 CET, end at Wed 2020-12-23 13:25:20 CET
. --
Dez 23 08:09:23 DietPi kernel: unrar invoked oom-killer:
gfp_mask=0x40cd0(GFP_KERNEL|__GFP_COMP|__GFP_RECLAIMABLE), order=0, oom_score_a
dj=0
Dez 23 08:09:23 DietPi kernel: CPU: 2 PID: 18461 Comm: u
nrar Tainted: G C 5.4.72-v7l+ #1356
Dez 23 08:09:23 DietPi kernel: Hardware name: BCM2711
Dez 23 08:09:23 DietPi kernel: Backtrace:
Dez 23 08:09:23 DietPi kernel: [<c020e1c8>] (dump_backtr
ace) from [<c020e544>] (show_stack+0x20/0x24)
Dez 23 08:09:23 DietPi kernel: r7:ffffffff r6:00000000
r5:60000013 r4:c12a1130
Dez 23 08:09:23 DietPi kernel: [<c020e524>] (show_stack)
from [<c0a84cb0>] (dump_stack+0xd4/0x118)
Dez 23 08:09:23 DietPi kernel: [<c0a84bdc>] (dump_stack)
from [<c039250c>] (dump_header+0x64/0x1f8)
Dez 23 08:09:23 DietPi kernel: r10:00040cd0 r9:c259c000
r8:00000000 r7:00000558 r6:c0ddc7ac r5:ddc6db80
Dez 23 08:09:23 DietPi kernel: r4:c259da68 r3:00000000
Dez 23 08:09:23 DietPi kernel: [<c03924a8>] (dump_header
) from [<c03918a4>] (oom_kill_process+0x17c/0x188)
Dez 23 08:09:23 DietPi kernel: r7:00000558 r6:c0ddc7ac r5:c259da68 r4:ddc6db80
Dez 23 08:09:23 DietPi kernel: [<c0391728>] (oom_kill_process) from [<c039230c>] (out_of_memory+0x244/0x344)
Dez 23 08:09:23 DietPi kernel: r7:c1204ff0 r6:c12083c0 r5:c259da68 r4:ddc6db80
Dez 23 08:09:23 DietPi kernel: [<c03920c8>] (out_of_memory) from [<c03e1154>] (__alloc_pages_nodemask+0xbfc/0x1230)
Dez 23 08:09:23 DietPi kernel: r6:c12a3550 r5:00002eed r4:00000000
Dez 23 08:09:23 DietPi kernel: [<c03e0558>] (__alloc_pages_nodemask) from [<c03f28a4>] (alloc_slab_page+0x34/0x430)
Dez 23 08:09:23 DietPi kernel: r10:00000000 r9:0000000d r8:00040cd0 r7:ffffffff r6:00000000 r5:ef803f00
Dez 23 08:09:23 DietPi kernel: r4:00000000
Dez 23 08:09:23 DietPi kernel: [<c03f2870>] (alloc_slab_page) from [<c03f2f58>] (new_slab+0x2b8/0x32c)
Dez 23 08:09:23 DietPi kernel: r10:00000000 r9:0000000d r8:00000400 r7:ffffffff r6:00040cd0 r5:ef803f00
Dez 23 08:09:23 DietPi kernel: r4:00000000
Dez 23 08:09:23 DietPi kernel: [<c03f2ca0>] (new_slab) from [<c03f5440>] (___slab_alloc.constprop.0+0x374/0x55c)
Dez 23 08:09:23 DietPi kernel: r9:c259dca0 r8:eff9e530 r7:ef803f00 r6:ef800880 r5:ef803f00 r4:00000000
Dez 23 08:09:23 DietPi kernel: [<c03f50cc>] (___slab_alloc.constprop.0) from [<c03f566c>] (__slab_alloc.constprop.0+0x44/0x90)
Dez 23 08:09:23 DietPi kernel: r10:00000000 r9:c259dca0 r8:eff9e530 r7:c0a9bcb8 r6:00400cc0 r5:ef803f00
Dez 23 08:09:23 DietPi kernel: r4:60010013
Dez 23 08:09:23 DietPi kernel: [<c03f5628>] (__slab_alloc.constprop.0) from [<c03f6044>] (kmem_cache_alloc+0x2d4/0x2dc)
Dez 23 08:09:23 DietPi kernel: r9:c259dca0 r8:c0a9bcb8 r7:ef803f00 r6:00400cc0 r5:00000000 r4:ef803f00
Dez 23 08:09:23 DietPi kernel: [<c03f5d70>] (kmem_cache_alloc) from [<c0a9bcb8>] (xas_nomem+0x68/0x8c)
Dez 23 08:09:23 DietPi kernel: r10:00000000 r9:c259dca0 r8:00000000 r7:ffffc005 r6:00000cc0 r5:e8eb2d10
Dez 23 08:09:23 DietPi kernel: r4:c259dc4c
Dez 23 08:09:23 DietPi kernel: [<c0a9bc50>] (xas_nomem) from [<c038a990>] (__add_to_page_cache_locked+0x1b0/0x378)
Dez 23 08:09:23 DietPi kernel: r5:e8eb2d10 r4:e1b25070
Dez 23 08:09:23 DietPi kernel: [<c038a7e0>] (__add_to_page_cache_locked) from [<c038abf0>] (add_to_page_cache_lru+0x6c/0x130)
Dez 23 08:09:23 DietPi kernel: r10:c12a7d23 r9:c120594c r8:00674900 r7:e1b25070 r6:00101cca r5:00101cca
Dez 23 08:09:23 DietPi kernel: r4:e8eb2d10
Dez 23 08:09:23 DietPi kernel: [<c038ab84>] (add_to_page_cache_lru) from [<c038ae4c>] (pagecache_get_page+0x198/0x384)
Dez 23 08:09:23 DietPi kernel: r6:00101cca r5:0000000e r4:e8eb2d10
Dez 23 08:09:23 DietPi kernel: [<c038acb4>] (pagecache_get_page) from [<c038b814>] (grab_cache_page_write_begin+0x28/0x3c)
Dez 23 08:09:23 DietPi kernel: r10:c0c13b4c r9:00000006 r8:74900000 r7:c259ddc0 r6:e1b24f60 r5:c259dec0
Dez 23 08:09:23 DietPi kernel: r4:d0d6cd80
Dez 23 08:09:23 DietPi kernel: [<c038b7ec>] (grab_cache_page_write_begin) from [<c04e7c2c>] (ext4_da_write_begin+0xc4/0x4a8)
Dez 23 08:09:23 DietPi kernel: r5:c259dec0 r4:d0d6cd80
Dez 23 08:09:23 DietPi kernel: [<c04e7b68>] (ext4_da_write_begin) from [<c0388b68>] (generic_perform_write+0xd0/0x1f0)
Dez 23 08:09:23 DietPi kernel: r10:c0c13b4c r9:00000000 r8:d0d6cd80 r7:c04e7b68 r6:e1b25070 r5:c259dec0
Dez 23 08:09:23 DietPi kernel: r4:00001000
Dez 23 08:09:23 DietPi kernel: [<c0388a98>] (generic_perform_write) from [<c038dc34>] (__generic_file_write_iter+0x16c/0x1fc)
Dez 23 08:09:23 DietPi kernel: r10:c259dec0 r9:e1b25070 r8:00000000 r7:e1b24f60 r6:d0d6cd80 r5:c259ded8
Dez 23 08:09:23 DietPi kernel: r4:00000000
Dez 23 08:09:23 DietPi kernel: [<c038dac8>] (__generic_file_write_iter) from [<c04d16e0>] (ext4_file_write_iter+0x280/0x474)
Dez 23 08:09:23 DietPi kernel: r10:00000000 r9:e1b24fe8 r8:c259dec0 r7:e1b24f60 r6:00100000 r5:e1b24f60
Dez 23 08:09:23 DietPi kernel: r4:c259ded8
Dez 23 08:09:23 DietPi kernel: [<c04d1460>] (ext4_file_write_iter) from [<c040c218>] (__vfs_write+0x15c/0x1ec)
Dez 23 08:09:23 DietPi kernel: r10:00000004 r9:00000006 r8:748cd13c r7:00000000 r6:00100000 r5:c259df60
Dez 23 08:09:23 DietPi kernel: r4:d0d6cd80
Dez 23 08:09:23 DietPi kernel: [<c040c0bc>] (__vfs_write) from [<c040f090>] (vfs_write+0xc0/0x1c8)
Dez 23 08:09:23 DietPi kernel: r9:00100000 r8:00000000 r7:c259df60 r6:b6eba008 r5:d0d6cd80 r4:00100000
Dez 23 08:09:23 DietPi kernel: [<c040efd0>] (vfs_write) from [<c040f37c>] (ksys_write+0x74/0x100)
Dez 23 08:09:23 DietPi kernel: r8:b6eba008 r7:00000006 r6:748cd13c r5:d0d6cd80 r4:d0d6cd80
Dez 23 08:09:23 DietPi kernel: [<c040f308>] (ksys_write) from [<c040f420>] (sys_write+0x18/0x1c)
Dez 23 08:09:23 DietPi kernel: r9:c259c000 r8:c02011c4 r7:00000004 r6:b6eba008 r5:00100000 r4:bee99d38
Dez 23 08:09:23 DietPi kernel: [<c040f408>] (sys_write) from [<c0201000>] (ret_fast_syscall+0x0/0x28)
Dez 23 08:09:23 DietPi kernel: Exception stack(0xc259dfa8 to 0xc259dff0)
Dez 23 08:09:23 DietPi kernel: dfa0: bee99d38 00100000 0000001b b6eba008 00100000 00000000
Dez 23 08:09:23 DietPi kernel: dfc0: bee99d38 00100000 b6eba008 00000004 bee99d58 b6eba008 bee99d38 beea7228
Dez 23 08:09:23 DietPi kernel: dfe0: 00000000 bee93c8c 0000a4ff 0002deb6
Dez 23 08:09:23 DietPi kernel: Mem-Info:
Dez 23 08:09:23 DietPi kernel: active_anon:446892 inactive_anon:21222 isolated_anon:0
active_file:6108 inactive_file:460941 isolated_file:28
unevictable:352 dirty:308 writeback:0 unstable:0
slab_reclaimable:19581 slab_unreclaimable:4647
mapped:6271 shmem:26442 pagetables:1531 bounce:0
free:23888 free_pcp:1233 free_cma:21
Dez 23 08:09:23 DietPi kernel: Node 0 active_anon:1787568kB inactive_anon:84888kB active_file:24432kB inactive_file:1843764kB unevictable:1408kB isolated(anon):0kB isolated(file):112kB mapped:25084kB dirty:1232kB
writeback:0kB shmem:105768kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
Dez 23 08:09:23 DietPi kernel: DMA free:48168kB min:53248kB low:57344kB high:61440kB active_anon:442760kB inactive_anon:36812kB active_file:2264kB inactive_file:1304kB unevictable:0kB writepending:0kB present:7864
32kB managed:655036kB mlocked:0kB kernel_stack:1872kB pagetables:1112kB bounce:0kB free_pcp:2396kB local_pcp:684kB free_cma:84kB
Dez 23 08:09:23 DietPi kernel: lowmem_reserve[]: 0 0 3238 3238
Dez 23 08:09:23 DietPi kernel: HighMem free:47384kB min:512kB low:21244kB high:41976kB active_anon:1344512kB inactive_anon:48076kB active_file:22556kB inactive_file:1842816kB unevictable:1408kB writepending:1232kB
present:3315712kB managed:3315712kB mlocked:1408kB kernel_stack:0kB pagetables:5012kB bounce:0kB free_pcp:2536kB local_pcp:348kB free_cma:0kB
Dez 23 08:09:23 DietPi kernel: lowmem_reserve[]: 0 0 0 0
Dez 23 08:09:23 DietPi kernel: DMA: 171*4kB (UEHC) 989*8kB (UMHC) 2346*16kB (UEH) 30*32kB (H) 9*64kB (H) 1*128kB (H) 1*256kB (H) 0*512kB 0*1024kB 0*2048kB 0*4096kB = 48052kB
Dez 23 08:09:23 DietPi kernel: HighMem: 661*4kB (M) 1182*8kB (UM) 316*16kB (M) 107*32kB (UM) 217*64kB (UM) 95*128kB (UM) 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 46628kB
Dez 23 08:09:23 DietPi kernel: 493812 total pagecache pages
Dez 23 08:09:23 DietPi kernel: 0 pages in swap cache
Dez 23 08:09:23 DietPi kernel: Swap cache stats: add 0, delete 0, find 0/0
Dez 23 08:09:23 DietPi kernel: Free swap = 0kB
Dez 23 08:09:23 DietPi kernel: Total swap = 0kB
Dez 23 08:09:23 DietPi kernel: 1025536 pages RAM
Dez 23 08:09:23 DietPi kernel: 828928 pages HighMem/MovableOnly
Dez 23 08:09:23 DietPi kernel: 32849 pages reserved
Dez 23 08:09:23 DietPi kernel: 16384 pages cma reserved
Dez 23 08:09:23 DietPi kernel: Tasks state (memory values in pages):
Dez 23 08:09:23 DietPi kernel: [ pid ] uid tgid total_vm rss pgtables_bytes swapents oom_score_adj name
Dez 23 08:09:23 DietPi kernel: [ 120] 0 120 9401 862 118784 0 0 systemd-journal
Dez 23 08:09:23 DietPi kernel: [ 166] 0 166 4439 278 53248 0 -1000 systemd-udevd
Dez 23 08:09:23 DietPi kernel: [ 252] 0 252 820 392 32768 0 0 vmtouch
Dez 23 08:09:23 DietPi kernel: [ 278] 0 278 6914 103 36864 0 0 rngd
Dez 23 08:09:23 DietPi kernel: [ 298] 33 298 16903 3524 143360 0 0 mono
Dez 23 08:09:23 DietPi kernel: [ 413] 0 413 1978 294 40960 0 0 dhclient
Dez 23 08:09:23 DietPi kernel: [ 664] 0 664 1441 22 36864 0 0 agetty
Dez 23 08:09:23 DietPi kernel: [ 670] 0 670 1002 40 28672 0 0 dropbear
Dez 23 08:09:23 DietPi kernel: [ 20161] 0 20161 7782 711 86016 0 0 nmbd
Dez 23 08:09:23 DietPi kernel: [ 20173] 0 20173 11876 874 122880 0 0 smbd
Dez 23 08:09:23 DietPi kernel: [ 20176] 0 20176 11144 582 110592 0 0 smbd-notifyd
Dez 23 08:09:23 DietPi kernel: [ 20177] 0 20177 11145 533 106496 0 0 cleanupd
Dez 23 08:09:23 DietPi kernel: [ 20187] 107 20187 15930 1351 90112 0 0 transmission-da
Dez 23 08:09:23 DietPi kernel: [ 20203] 999 20203 333988 249840 2367488 0 0 nzbget
Dez 23 08:09:23 DietPi kernel: [ 20231] 998 20231 48506 24147 499712 0 0 mono
Dez 23 08:09:23 DietPi kernel: [ 20241] 997 20241 61668 34334 679936 0 0 mono
Dez 23 08:09:23 DietPi kernel: [ 20252] 0 20252 1774 132 36864 0 0 cron
Dez 23 08:09:23 DietPi kernel: [ 21181] 1000 21181 4005 1061 57344 0 0 python
Dez 23 08:09:23 DietPi kernel: [ 21200] 1000 21200 122389 104238 978944 0 0 java
Dez 23 08:09:23 DietPi kernel: [ 347] 995 347 485 13 24576 0 0 dash
Dez 23 08:09:23 DietPi kernel: [ 348] 995 348 89969 21164 516096 0 0 jackett
Dez 23 08:09:23 DietPi kernel: [ 19323] 0 19323 25645 4650 208896 0 0 smbd
Dez 23 08:09:23 DietPi kernel: [ 18461] 999 18461 610 453 28672 0 0 unrar
Dez 23 08:09:23 DietPi kernel: oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=/,mems_allowed=0,global_oom,task_memcg=/,task=nzbget,pid=20203,uid=999
Dez 23 08:09:23 DietPi kernel: Out of memory: Killed process 20203 (nzbget) total-vm:1335952kB, anon-rss:997624kB, file-rss:1736kB, shmem-rss:0kB, UID:999 pgtables:2312kB oom_score_adj:0
Dez 23 08:09:24 DietPi kernel: oom_reaper: reaped process 20203 (nzbget), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB
Dez 23 08:09:24 DietPi systemd[1]: nzbget.service: Main process exited, code=killed, status=9/KILL
Dez 23 08:09:28 DietPi systemd[1]: nzbget.service: Failed with result 'signal'.
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Dez 23 08:09:23 DietPi kernel: unrar invoked oom-killer:
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Dez 23 08:09:23 DietPi kernel: Free swap = 0kB
Dez 23 08:09:23 DietPi kernel: Total swap = 0kB
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Dez 23 08:09:23 DietPi kernel: Out of memory: Killed process 20203 (nzbget) total-vm:1335952kB, anon-rss:997624kB, file-rss:1736kB, shmem-rss:0kB, UID:999 pgtables:2312kB oom_score_adj:0
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free -m
Code: Select all
$ free -m
total used free shared buff/cache available
Mem: 475 170 82 3 222 290
Swap: 237 3 234
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