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У меня есть встроенное устройство, работающее под управлением C/C++ в Linux. Существует проблема с программным обеспечением, которое заставляет приложение загружать память до тех пор, пока ОС Linux не убьет приложение.Отладка приложения для захвата памяти во встроенной среде Linux
Ниже приведен вывод ядра, когда приложение умирает.
Feb 2 05:35:23 myEmbeddedDevice kernel: myApplicaion invoked oom-killer: gfp_mask=0x201da, order=0, oom_score_adj=0
Feb 2 05:35:24 myEmbeddedDevice kernel: myApplicaion cpuset=/ mems_allowed=0
Feb 2 05:35:24 myEmbeddedDevice kernel: CPU: 1 PID: 949 Comm: myApplicaion Tainted: G O 3.12.0 #1
Feb 2 05:35:24 myEmbeddedDevice kernel: [<80016394>] (unwind_backtrace+0x0/0xf4) from [<80011de0>] (show_stack+0x10/0x14)
Feb 2 05:35:24 myEmbeddedDevice kernel: [<80011de0>] (show_stack+0x10/0x14) from [<80404d6c>] (dump_stack+0x80/0x90)
Feb 2 05:35:24 myEmbeddedDevice kernel: [<80404d6c>] (dump_stack+0x80/0x90) from [<80403344>] (dump_header.isra.13+0x84/0x190)
Feb 2 05:35:24 myEmbeddedDevice kernel: [<80403344>] (dump_header.isra.13+0x84/0x190) from [<800a9210>] (oom_kill_process+0x278/0x3dc)
Feb 2 05:35:24 myEmbeddedDevice kernel: [<800a9210>] (oom_kill_process+0x278/0x3dc) from [<800a97f8>] (out_of_memory+0x29c/0x2c0)
Feb 2 05:35:24 myEmbeddedDevice kernel: [<800a97f8>] (out_of_memory+0x29c/0x2c0) from [<800ad670>] (__alloc_pages_nodemask+0x86c/0x8c8)
Feb 2 05:35:24 myEmbeddedDevice kernel: [<800ad670>] (__alloc_pages_nodemask+0x86c/0x8c8) from [<800a8254>] (filemap_fault+0x1cc/0x420)
Feb 2 05:35:24 myEmbeddedDevice kernel: [<800a8254>] (filemap_fault+0x1cc/0x420) from [<800c57bc>] (__do_fault+0x68/0x498)
Feb 2 05:35:24 myEmbeddedDevice kernel: [<800c57bc>] (__do_fault+0x68/0x498) from [<800c877c>] (handle_mm_fault+0xec/0x800)
Feb 2 05:35:24 myEmbeddedDevice kernel: [<800c877c>] (handle_mm_fault+0xec/0x800) from [<8001adc8>] (do_page_fault+0x1d4/0x3b4)
Feb 2 05:35:24 myEmbeddedDevice kernel: [<8001adc8>] (do_page_fault+0x1d4/0x3b4) from [<800083e8>] (do_DataAbort+0x38/0x9c)
Feb 2 05:35:24 myEmbeddedDevice kernel: [<800083e8>] (do_DataAbort+0x38/0x9c) from [<80012a34>] (__dabt_usr+0x34/0x40)
Feb 2 05:35:24 myEmbeddedDevice kernel: Exception stack(0x8fb51fb0 to 0x8fb51ff8)
Feb 2 05:35:24 myEmbeddedDevice kernel: 1fa0: 3fcfffff 76e19390 76e19398 76e04170
Feb 2 05:35:24 myEmbeddedDevice kernel: 1fc0: 548fea44 00000800 00000010 00000009 0188c068 00002000 00000400 00000010
Feb 2 05:35:24 myEmbeddedDevice kernel: 1fe0: 3fc921fb 548fea40 76dcf440 76dcf4b0 80000010 ffffffff
Feb 2 05:35:24 myEmbeddedDevice kernel: Mem-info:
Feb 2 05:35:24 myEmbeddedDevice kernel: Normal per-cpu:
Feb 2 05:35:24 myEmbeddedDevice kernel: CPU 0: hi: 90, btch: 15 usd: 55
Feb 2 05:35:24 myEmbeddedDevice kernel: CPU 1: hi: 90, btch: 15 usd: 77
Feb 2 05:35:24 myEmbeddedDevice kernel: active_anon:60356 inactive_anon:10 isolated_anon:0
Feb 2 05:35:24 myEmbeddedDevice kernel: active_file:37 inactive_file:62 isolated_file:0
Feb 2 05:35:24 myEmbeddedDevice kernel: unevictable:0 dirty:2 writeback:0 unstable:0
Feb 2 05:35:24 myEmbeddedDevice kernel: free:522 slab_reclaimable:487 slab_unreclaimable:829
Feb 2 05:35:24 myEmbeddedDevice kernel: mapped:46 shmem:39 pagetables:456 bounce:0
Feb 2 05:35:24 myEmbeddedDevice kernel: free_cma:0
Feb 2 05:35:24 myEmbeddedDevice kernel: Normal free:2088kB min:2012kB low:2512kB high:3016kB active_anon:241424kB inactive_anon:40kB active_file:128kB inactive_file:356kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:262144kB managed:253604kB mlocked:0kB dirty:8kB writeback:0kB mapped:132kB shmem:156kB slab_reclaimable:1948kB slab_unreclaimable:3316kB kernel_stack:480kB pagetables:1824kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:1450 all_unreclaimable? yes
Feb 2 05:35:24 myEmbeddedDevice kernel: lowmem_reserve[]: 0 0
Feb 2 05:35:24 myEmbeddedDevice kernel: Normal: 33*4kB (EMR) 12*8kB (EMR) 5*16kB (R) 0*32kB 1*64kB (R) 1*128kB (R) 1*256kB (R) 1*512kB (R) 1*1024kB (R) 0*2048kB 0*4096kB = 2292kB
Feb 2 05:35:24 myEmbeddedDevice kernel: 116 total pagecache pages
Feb 2 05:35:24 myEmbeddedDevice kernel: 0 pages in swap cache
Feb 2 05:35:24 myEmbeddedDevice kernel: Swap cache stats: add 0, delete 0, find 0/0
Feb 2 05:35:24 myEmbeddedDevice kernel: Free swap = 0kB
Feb 2 05:35:24 myEmbeddedDevice kernel: Total swap = 0kB
Feb 2 05:35:24 myEmbeddedDevice kernel: 65536 pages of RAM
Feb 2 05:35:24 myEmbeddedDevice kernel: 799 free pages
Feb 2 05:35:24 myEmbeddedDevice kernel: 2135 reserved pages
Feb 2 05:35:24 myEmbeddedDevice kernel: 971 slab pages
Feb 2 05:35:24 myEmbeddedDevice kernel: 30 pages shared
Feb 2 05:35:24 myEmbeddedDevice kernel: 0 pages swap cached
Feb 2 05:35:24 myEmbeddedDevice kernel: [ pid ] uid tgid total_vm rss nr_ptes swapents oom_score_adj name
Feb 2 05:35:24 myEmbeddedDevice kernel: [ 861] 0 861 557 40 4 0 0 rpcbind
Feb 2 05:35:24 myEmbeddedDevice kernel: [ 878] 0 878 465 21 4 0 0 atd
Feb 2 05:35:24 myEmbeddedDevice kernel: [ 888] 999 888 653 35 4 0 0 dbus-daemon
Feb 2 05:35:24 myEmbeddedDevice kernel: [ 895] 0 895 1039 66 4 0 -1000 sshd
Feb 2 05:35:24 myEmbeddedDevice kernel: [ 920] 0 920 652 48 4 0 0 rc
Feb 2 05:35:24 myEmbeddedDevice kernel: [ 921] 0 921 203804 59132 385 0 0 myApplicaion
Feb 2 05:35:24 myEmbeddedDevice kernel: [ 923] 0 923 421 15 3 0 0 logger
Feb 2 05:35:24 myEmbeddedDevice kernel: [ 928] 0 928 445 38 3 0 0 syslogd
Feb 2 05:35:24 myEmbeddedDevice kernel: [ 930] 0 930 760 369 4 0 0 klogd
Feb 2 05:35:24 myEmbeddedDevice kernel: [ 935] 0 935 572 38 4 0 0 lighttpd
Feb 2 05:35:24 myEmbeddedDevice kernel: [ 938] 0 938 618 116 3 0 0 crond
Feb 2 05:35:24 myEmbeddedDevice kernel: [ 944] 0 944 550 14 3 0 0 getty
Feb 2 05:35:24 myEmbeddedDevice kernel: [ 945] 0 945 550 14 3 0 0 getty
Feb 2 05:35:24 myEmbeddedDevice kernel: [ 950] 0 950 1100 88 5 0 0 sshd
Feb 2 05:35:24 myEmbeddedDevice kernel: [ 952] 0 952 717 77 4 0 0 sh
Feb 2 05:35:24 myEmbeddedDevice kernel: [ 953] 0 953 553 48 4 0 0 top
Feb 2 05:35:24 myEmbeddedDevice kernel: [ 954] 0 954 1100 88 5 0 0 sshd
Feb 2 05:35:24 myEmbeddedDevice kernel: [ 956] 0 956 717 77 4 0 0 sh
Feb 2 05:35:24 myEmbeddedDevice kernel: [ 957] 0 957 431 17 3 0 0 tail
Feb 2 05:35:24 myEmbeddedDevice kernel: Out of memory: Kill process 921 (myApplicaion) score 909 or sacrifice child
Feb 2 05:35:24 myEmbeddedDevice kernel: Killed process 921 (myApplicaion) total-vm:815216kB, anon-rss:236528kB, file-rss:0kB
Могу ли я использовать эту информацию для отладки моего кода? Какая информация в ошибках наиболее полезна для начала, пытаясь понять, почему приложение протекает?