bmcd crash if flashing modules several times

[camrossi]

I have been experimenting with Talos on RK-1 and had to re flesh them a few times.
After a few flashing operations (say 6+) bmcd crashed due to OOM.

As a work around I just restarted the bmcd (/etc/init.d/S94bmcd restart) and all works fine

Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486229] [<c010e390>] (unwind_backtrace) from [<c010a850>] (show_stack+0x10/0x14)
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486247] [<c010a850>] (show_stack) from [<c05e432c>] (dump_stack+0x78/0x94)
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486264] [<c05e432c>] (dump_stack) from [<c0196118>] (dump_header+0x68/0x288)
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486278] [<c0196118>] (dump_header) from [<c0195634>] (oom_kill_process+0x84/0x2b4)
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486291] [<c0195634>] (oom_kill_process) from [<c0195fe4>] (out_of_memory+0x330/0x388)
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486307] [<c0195fe4>] (out_of_memory) from [<c01c4d2c>] (__alloc_pages_nodemask+0x7d0/0x8e4)
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486321] [<c01c4d2c>] (__alloc_pages_nodemask) from [<c0192850>] (pagecache_get_page+0xf8/0x1a0)
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486334] [<c0192850>] (pagecache_get_page) from [<c0192d38>] (filemap_fault+0x1b8/0x408)
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486348] [<c0192d38>] (filemap_fault) from [<c01b0304>] (__do_fault+0x50/0xa8)
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486363] [<c01b0304>] (__do_fault) from [<c01b316c>] (handle_mm_fault+0x534/0x788)
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486377] [<c01b316c>] (handle_mm_fault) from [<c010f204>] (do_page_fault+0x19c/0x2e8)
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486392] [<c010f204>] (do_page_fault) from [<c010f540>] (do_PrefetchAbort+0x38/0x88)
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486407] [<c010f540>] (do_PrefetchAbort) from [<c0102808>] (ret_from_exception+0x0/0x18)
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486413] Exception stack(0xc5aabfb0 to 0xc5aabff8)
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486423] bfa0:                                     b5f2e0b8 b5cfd670 b5cfd670 000000cc
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486434] bfc0: b5cfd630 b5f2e0b8 00000000 b5f2e0a0 b5cfd6a0 b5cfd6a8 00008001 b5cfd8f4
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486444] bfe0: b5f1edf0 b5cfd618 004fb4ac 00500510 20070010 ffffffff
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486461] Mem-Info:
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486480] active_anon:18755 inactive_anon:22 isolated_anon:0
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486480]  active_file:46 inactive_file:76 isolated_file:0
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486480]  unevictable:0 dirty:1 writeback:0 unstable:0
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486480]  slab_reclaimable:1129 slab_unreclaimable:4512
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486480]  mapped:31 shmem:23 pagetables:146 bounce:0
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486480]  free:1272 free_pcp:12 free_cma:0
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486493] Node 0 active_anon:75020kB inactive_anon:88kB active_file:184kB inactive_file:304kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:124kB dirty:4kB writeback:0kB shmem:92kB writeback_tmp:0kB unstable:
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486511] Normal free:5088kB min:5436kB low:5768kB high:6100kB active_anon:75020kB inactive_anon:88kB active_file:144kB inactive_file:84kB unevictable:0kB writepending:4kB present:131072kB managed:113768kB mlocked:0kB kerne
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486515] lowmem_reserve[]: 0 0
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486523] Normal: 7*4kB (U) 76*8kB (UE) 271*16kB (UE) 1*32kB (U) 1*64kB (E) 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 5068kB
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486559] Free pages count per migrate typeat order:     0      1      2      3      4      5      6      7      8      9     10
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486582] zone   Normal, type    Unmovable      7     73    259      1      0      0      0      0      0      0      0
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486756] zone   Normal, type      Movable      0      0      0      0      0      0      0      0      0      0      0
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486777] zone   Normal, type  Reclaimable      0      3     12      0      1      0      0      0      0      0      0
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486821] zone   Normal, type          CMA      0      0      0      0      0      0      0      0      0      0      0
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486853] zone   Normal, type   HighAtomic      0      0      0      0      0      0      0      0      0      0      0
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486874] zone   Normal, type      Isolate      0      0      0      0      0      0      0      0      0      0      0
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486895] 153 total pagecache pages
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486900] 0 pages in swap cache
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486906] Swap cache stats: add 0, delete 0, find 0/0
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486909] Free swap  = 0kB
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486913] Total swap = 0kB
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486917] 32768 pages RAM
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486920] 0 pages HighMem/MovableOnly
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486924] 4326 pages reserved
Jan 26 03:28:45 turingpi kern.warn kernel: [79860.486927] 2048 pages cma reserved
Jan 26 03:28:45 turingpi kern.info kernel: [79860.486944] Tasks state (memory values in pages):
Jan 26 03:28:45 turingpi kern.info kernel: [79860.486948] [  pid  ]   uid  tgid total_vm      rss pgtables_bytes swapents oom_score_adj name
Jan 26 03:28:45 turingpi kern.info kernel: [79860.486967] [   1045]     0  1045      684       22    10240        0             0 syslogd
Jan 26 03:28:45 turingpi kern.info kernel: [79860.486986] [   1049]     0  1049      684       22    10240        0             0 klogd
Jan 26 03:28:45 turingpi kern.info kernel: [79860.486996] [   1065]     0  1065      716       67    10240        0             0 mdev
Jan 26 03:28:45 turingpi kern.info kernel: [79860.487013] [   1118]     0  1118      684       21    10240        0             0 udhcpc
Jan 26 03:28:45 turingpi kern.info kernel: [79860.487023] [   1123]   101  1123     2866       54    12288        0             0 chronyd
Jan 26 03:28:45 turingpi kern.info kernel: [79860.487032] [   1129]   100  1129      705       91    10240        0             0 avahi-daemon
Jan 26 03:28:45 turingpi kern.info kernel: [79860.487042] [   1130]   100  1130      648       36    10240        0             0 avahi-daemon
Jan 26 03:28:45 turingpi kern.info kernel: [79860.487051] [   1134]     0  1134     1619      145    12288        0         -1000 sshd
Jan 26 03:28:45 turingpi kern.info kernel: [79860.487061] [   1138]     0  1138      582       62    10240        0             0 collectd
Jan 26 03:28:45 turingpi kern.info kernel: [79860.487070] [   1151]     0  1151    31957    17524   129024        0             0 bmcd
Jan 26 03:28:45 turingpi kern.info kernel: [79860.487080] [   1155]     0  1155      684       12     8192        0             0 getty
Jan 26 03:28:45 turingpi kern.info kernel: [79860.487091] [   1590]     0  1590     1716      233    12288        0             0 sshd
Jan 26 03:28:45 turingpi kern.info kernel: [79860.487101] [   1594]     0  1594      684       34    10240        0             0 sh
Jan 26 03:28:45 turingpi kern.info kernel: [79860.487114] [   1719]     0  1719     5656      394    26624        0             0 tpi
Jan 26 03:28:45 turingpi kern.info kernel: [79860.487126] [   1745]     0  1745      684       21     8192        0             0 sh
Jan 26 03:28:45 turingpi kern.info kernel: [79860.487143] oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),task=bmcd,pid=1151,uid=0
Jan 26 03:28:45 turingpi kern.err kernel: [79860.487212] Out of memory: Killed process 1151 (bmcd) total-vm:127828kB, anon-rss:70096kB, file-rss:0kB, shmem-rss:0kB, UID:0 pgtables:126kB oom_score_adj:0
Jan 26 03:28:45 turingpi kern.info kernel: [79860.525661] oom_reaper: reaped process 1151 (bmcd), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB

[svenrademakers]

related to #162