Re: [PATCH] bugfix oom kill init lead panic

From: Chenjie (K)
Date: Tue Dec 01 2015 - 01:11:01 EST

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Please ignore the last email.

This is log , kill pid 9134:

Mem-info:
Normal per-cpu:
CPU 0: hi: 90, btch: 15 usd: 0
CPU 1: hi: 90, btch: 15 usd: 0
active_anon:997 inactive_anon:36468 isolated_anon:0
active_file:1 inactive_file:0 isolated_file:0
unevictable:10743 dirty:0 writeback:0 unstable:0
free:451 slab_reclaimable:1345 slab_unreclaimable:2902
mapped:588 shmem:37100 pagetables:91 bounce:0
free_cma:0
Normal free:1804kB min:1812kB low:2264kB high:2716kB active_anon:3988kB inactive_anon:145872kB active_file:4kB inactive_file:0kB unevictable:42972kB isolated(anon):0kB isolated(file):0kB present:307200kB managed:205416kB mlocked:0kB dirty:0kB writeback:0kB mapped:2352kB shmem:148400kB slab_reclaimable:5380kB slab_unreclaimable:11608kB kernel_stack:520kB pagetables:364kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:22 all_unreclaimable? yes
lowmem_reserve[]: 0 0 0
Normal: 139*4kB (UEMR) 67*8kB (UEMR) 5*16kB (UMR) 1*32kB (R) 2*64kB (R) 4*128kB (R) 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 1844kB
47844 total pagecache pages
76800 pages of RAM
594 free pages
22676 reserved pages
2796 slab pages
529874 pages shared
0 pages swap cached
[ pid ] uid tgid total_vm rss nr_ptes swapents oom_score_adj name
[ 1021] 0 1021 493 139 5 0 0 RATC
[ 1023] 0 1023 493 123 5 0 -1000 RATC
[ 1112] 0 1112 1302 511 4 0 -1000 sshd
[ 1505] 0 1505 490 130 5 0 0 take_cpu_rate
[ 1506] 0 1506 490 32 5 0 0 take_cpu_rate
[ 1508] 0 1508 490 32 5 0 0 take_cpu_rate
[ 8553] 0 8553 462 45 4 0 0 lockf.test
[ 8554] 0 8554 462 86 4 0 0 lockf.test
[ 8555] 0 8555 462 86 4 0 0 lockf.test
[ 8557] 0 8557 462 86 4 0 0 lockf.test
[10732] 0 10732 462 16 4 0 0 lockf.test
[10068] 0 10068 730 92 5 0 0 runtest.sh
[10072] 0 10072 697 99 4 0 0 sleep
[ 8606] 0 8606 730 92 5 0 0 runtest.sh
[ 8610] 0 8610 697 99 4 0 0 sleep
[ 8611] 0 8611 732 99 5 0 0 tr
[ 8612] 0 8612 730 99 5 0 0 dd
[ 9132] 0 9132 947 129 5 0 0 syslog-ng
[ 9133] 0 9133 384 32 3 0 0 getty
[ 9134] 0 9134 467 164 4 0 0 init
*****************Start oom extend info.*****************
Vmallocinfo Start >>>>>>>>>>>>>>>>>>>>
0xbf000000-0xbf006000 24576 module_alloc_update_bounds+0xc/0x5c pages=5 vmalloc
0xbf00a000-0xbf00e000 16384 module_alloc_update_bounds+0xc/0x5c pages=3 vmalloc
0xbf011000-0xbf013000 8192 module_alloc_update_bounds+0xc/0x5c pages=1 vmalloc
0xbf015000-0xbf017000 8192 module_alloc_update_bounds+0xc/0x5c pages=1 vmalloc
0xbf019000-0xbf01b000 8192 module_alloc_update_bounds+0xc/0x5c pages=1 vmalloc
0xbf01d000-0xbf021000 16384 module_alloc_update_bounds+0xc/0x5c pages=3 vmalloc
0xbf024000-0xbf032000 57344 module_alloc_update_bounds+0xc/0x5c pages=13 vmalloc
0xbf039000-0xbf03c000 12288 module_alloc_update_bounds+0xc/0x5c pages=2 vmalloc
0xbf03f000-0xbf042000 12288 module_alloc_update_bounds+0xc/0x5c pages=2 vmalloc
0xbf044000-0xbf046000 8192 module_alloc_update_bounds+0xc/0x5c pages=1 vmalloc
0xbf048000-0xbf04a000 8192 module_alloc_update_bounds+0xc/0x5c pages=1 vmalloc
0xbf04c000-0xbf04e000 8192 module_alloc_update_bounds+0xc/0x5c pages=1 vmalloc
0xbf050000-0xbf054000 16384 module_alloc_update_bounds+0xc/0x5c pages=3 vmalloc
0xbf056000-0xbf059000 12288 module_alloc_update_bounds+0xc/0x5c pages=2 vmalloc
0xbf05b000-0xbf069000 57344 module_alloc_update_bounds+0xc/0x5c pages=13 vmalloc
0xbf06d000-0xbf08e000 135168 module_alloc_update_bounds+0xc/0x5c pages=32 vmalloc
0xbf096000-0xbf0ce000 229376 module_alloc_update_bounds+0xc/0x5c pages=55 vmalloc
0xbf0e8000-0xbf0ea000 8192 module_alloc_update_bounds+0xc/0x5c pages=1 vmalloc
0xbf0ec000-0xbf0fe000 73728 module_alloc_update_bounds+0xc/0x5c pages=17 vmalloc
0xbf105000-0xbf12a000 151552 module_alloc_update_bounds+0xc/0x5c pages=36 vmalloc
0xbf13d000-0xbf145000 32768 module_alloc_update_bounds+0xc/0x5c pages=7 vmalloc
0xbf149000-0xbf168000 126976 module_alloc_update_bounds+0xc/0x5c pages=30 vmalloc
0xbf173000-0xbf179000 24576 module_alloc_update_bounds+0xc/0x5c pages=5 vmalloc
0xbf17c000-0xbf180000 16384 module_alloc_update_bounds+0xc/0x5c pages=3 vmalloc
0xbf182000-0xbf186000 16384 module_alloc_update_bounds+0xc/0x5c pages=3 vmalloc
0xbf192000-0xbf1a5000 77824 module_alloc_update_bounds+0xc/0x5c pages=18 vmalloc
0xbf1ab000-0xbf1ad000 8192 module_alloc_update_bounds+0xc/0x5c pages=1 vmalloc
0xd3000000-0xd3021000 135168 ekbox_reinit+0x3c/0xcc phys=9fa00000 ioremap
0xd3022000-0xd3024000 8192 of_iomap+0x30/0x3c phys=1a001000 ioremap
0xd3024000-0xd3027000 12288 of_iomap+0x30/0x3c phys=1a000000 ioremap
0xd3028000-0xd302a000 8192 of_iomap+0x30/0x3c phys=20000000 ioremap
0xd302a000-0xd302c000 8192 of_iomap+0x30/0x3c phys=20011000 ioremap
0xd302c000-0xd302f000 12288 of_iomap+0x30/0x3c phys=1a000000 ioremap
0xd3030000-0xd3032000 8192 of_iomap+0x30/0x3c phys=20013000 ioremap
0xd3032000-0xd3034000 8192 bsp_init_led+0x320/0x5e8 phys=f000b000 ioremap
0xd3034000-0xd3036000 8192 bsp_init_led+0x394/0x5e8 phys=f000b000 ioremap
0xd303a000-0xd307b000 266240 atomic_pool_init+0x0/0x11c phys=8d500000 user
0xd3080000-0xd3082000 8192 l2cache_init+0xb8/0x3b8 phys=16800000 ioremap
0xd3916000-0xd3959000 274432 0xbf08e26c pages=66 vmalloc
0xd3959000-0xd3965000 49152 0xbf08e280 pages=11 vmalloc
0xd3965000-0xd396a000 20480 0xbf08e2e0 pages=4 vmalloc
0xd396a000-0xd396d000 12288 0xbf08e2ec pages=2 vmalloc
0xd3a3f000-0xd3a42000 12288 pcpu_extend_area_map+0x18/0xa0 pages=2 vmalloc
0xd3ad8000-0xd3ada000 8192 0xbf1a54ac phys=9fffe000 ioremap
0xd3adc000-0xd3ade000 8192 0xbf1a517c phys=30000000 ioremap
0xd3ade000-0xd3ae0000 8192 0xbf1a51b0 phys=20000000 ioremap
0xd3af2000-0xd3af4000 8192 0xbf1a517c phys=30001000 ioremap
0xd3af4000-0xd3af6000 8192 0xbf1a51b0 phys=20000000 ioremap
0xd3af6000-0xd3af8000 8192 0xbf1a517c phys=30002000 ioremap
0xd3af8000-0xd3afa000 8192 0xbf1a51b0 phys=20000000 ioremap
0xd3afa000-0xd3afc000 8192 0xbf1a517c phys=30003000 ioremap
0xd3afc000-0xd3afe000 8192 0xbf1a51b0 phys=20000000 ioremap
0xd3c00000-0xd3e01000 2101248 kbox_proc_mem_write+0x104/0x1cc phys=9f800000 ioremap
0xd4000000-0xd8001000 67112960 devm_ioremap+0x38/0x70 phys=40000000 ioremap
0xfe001000-0xfe002000 4096 iotable_init+0x0/0xb4 phys=20001000 ioremap
0xfe200000-0xfe201000 4096 iotable_init+0x0/0xb4 phys=1a000000 ioremap
0xfee00000-0xff000000 2097152 pci_reserve_io+0x0/0x30 ioremap
Vmallocinfo End <<<<<<<<<<<<<<<<<<<<

[SLUB]Slabinfo Start >>>>>>>>>>>>>>>>>>>>
# name <active_objs> <num_objs> <objsize> <objperslab> <pagesperslab> : slabdata <active_slabs> <num_slabs>
nfs_direct_cache 0 0 120 34 1 : slabdata 0 0
nfs_commit_data 18 18 448 18 2 : slabdata 1 1
nfs_read_data 0 0 576 14 2 : slabdata 0 0
nfs_inode_cache 0 0 816 20 4 : slabdata 0 0
rpc_inode_cache 0 0 512 16 2 : slabdata 0 0
jffs2_refblock 432 432 248 16 1 : slabdata 27 27
jffs2_i 274 546 552 14 2 : slabdata 39 39
bsg_cmd 0 0 288 14 1 : slabdata 0 0
mqueue_inode_cache 23 23 704 23 4 : slabdata 1 1
squashfs_inode_cache 0 0 576 14 2 : slabdata 0 0
ext2_inode_cache 0 0 640 12 2 : slabdata 0 0
pid_namespace 102 102 80 51 1 : slabdata 2 2
user_namespace 0 0 224 18 1 : slabdata 0 0
posix_timers_cache 0 0 160 25 1 : slabdata 0 0
UDP-Lite 0 0 640 12 2 : slabdata 0 0
UDP 24 24 640 12 2 : slabdata 2 2
tw_sock_TCP 64 64 128 32 1 : slabdata 2 2
TCP 24 24 1344 12 4 : slabdata 2 2
eventpoll_pwq 204 204 40 102 1 : slabdata 2 2
sgpool-128 12 12 2560 12 8 : slabdata 1 1
sgpool-64 12 12 1280 12 4 : slabdata 1 1
sgpool-16 12 12 320 12 1 : slabdata 1 1
blkdev_queue 50 50 1272 25 8 : slabdata 2 2
blkdev_requests 54 54 216 18 1 : slabdata 3 3
fsnotify_event_holder 7696 8960 16 256 1 : slabdata 35 35
fsnotify_event 112 112 72 56 1 : slabdata 2 2
biovec-256 10 10 3072 10 8 : slabdata 1 1
biovec-128 0 0 1536 21 8 : slabdata 0 0
biovec-64 0 0 768 21 4 : slabdata 0 0
sock_inode_cache 64 64 512 16 2 : slabdata 4 4
skbuff_fclone_cache 63 63 384 21 2 : slabdata 3 3
file_lock_cache 1904 1904 120 34 1 : slabdata 56 56
net_namespace 0 0 2240 14 8 : slabdata 0 0
shmem_inode_cache 10195 10890 528 15 2 : slabdata 726 726
proc_inode_cache 162 256 504 16 2 : slabdata 16 16
sigqueue 169 308 144 28 1 : slabdata 11 11
bdev_cache 23 23 704 23 4 : slabdata 1 1
inode_cache 2919 3315 472 17 2 : slabdata 195 195
dentry 13824 20412 144 28 1 : slabdata 729 729
buffer_head 0 0 64 64 1 : slabdata 0 0
vm_area_struct 615 1150 88 46 1 : slabdata 25 25
signal_cache 165 240 640 12 2 : slabdata 20 20
sighand_cache 108 144 1344 12 4 : slabdata 12 12
task_struct 127 182 2304 14 8 : slabdata 13 13
anon_vma_chain 2269 2816 32 128 1 : slabdata 22 22
anon_vma 2409 2409 56 73 1 : slabdata 33 33
debug_objects_cache 3593 8500 24 170 1 : slabdata 50 50
radix_tree_node 1259 1352 304 13 1 : slabdata 104 104
idr_layer_cache 105 105 1080 15 4 : slabdata 7 7
kmalloc-8192 20 20 8192 4 8 : slabdata 5 5
kmalloc-4096 48 48 4096 8 8 : slabdata 6 6
kmalloc-2048 96 96 2048 16 8 : slabdata 6 6
kmalloc-1024 330 400 1024 16 4 : slabdata 25 25
kmalloc-512 902 960 512 16 2 : slabdata 60 60
kmalloc-256 211 240 256 16 1 : slabdata 15 15
kmalloc-192 1221 1323 192 21 1 : slabdata 63 63
kmalloc-128 2318 2624 128 32 1 : slabdata 82 82
kmalloc-64 23503 24192 64 64 1 : slabdata 378 378
kmem_cache_node 128 128 64 64 1 : slabdata 2 2
kmem_cache 96 96 128 32 1 : slabdata 3 3
Slabinfo End <<<<<<<<<<<<<<<<<<<<

Filesystem 1K-blocks Used Available Use(%) Mounted on
tmpfs 524288 4 524284 0% /tmp
none 10240 10240 0 100% /var
tmpfs 108248 16 108232 0% /dev
tmpfs 108248 0 108248 0% /dev/shm
tmpfs 173192 138152 35040 79% /tmp
*****smap info of all task:*****
smaps info of task-sshd[1112], rss:2044 kB:
smaps info of task-init[9134], rss:656 kB:
smaps info of task-init[1], rss:656 kB:
smaps info of task-RATC[1021], rss:556 kB:
smaps info of task-take_cpu_rate[1505], rss:520 kB:
******** mem info ***** Total: 216496 kB
Total free: 1804 kB
User space: 192836 kB
Mlock: 0 kB
Kernel space: 21856 kB
Bootmem reserved: 90704 kB
kernel_image_info:
Kernel code: 0x80008000-0x8043369f
Kernel data: 0x80496000-0x8056559b
module info:
physmap 3kB Live 0xbf1ab000 (O)
refrence count: 1
-
Drv_Gmac_K 71kB Live 0xbf192000 (O)
refrence count: 0
-
rtos_snapshot 10kB Live 0xbf182000 (O)
refrence count: 0
-
rtos_kbox_panic 10kB Live 0xbf17c000 (O)
refrence count: 0
-
rsm 16kB Live 0xbf173000 (O)
refrence count: 0
-
nfsv4 119kB Live 0xbf149000
refrence count: 0
-
nfsv3 24kB Live 0xbf13d000
refrence count: 0
-
nfs 141kB Live 0xbf105000
refrence count: 2
nfsv4,
nfsv3,
lockd 64kB Live 0xbf0ec000
refrence count: 2
nfsv3,
nfs,
nfs_acl 2kB Live 0xbf0e8000
refrence count: 1
nfsv3,
sunrpc 216kB Live 0xbf096000
refrence count: 5
nfsv4,
nfsv3,
nfs,
lockd,
nfs_acl,
jffs2 125kB Live 0xbf06d000
refrence count: 1
-
cfi_cmdset_0002 51kB Live 0xbf05b000
refrence count: 1
-
cfi_probe 5kB Live 0xbf056000
refrence count: 0
-
cfi_util 11kB Live 0xbf050000
refrence count: 2
cfi_cmdset_0002,
cfi_probe,
gen_probe 2kB Live 0xbf04c000
refrence count: 1
cfi_probe,
cmdlinepart 2kB Live 0xbf048000
refrence count: 0
-
chipreg 2kB Live 0xbf044000
refrence count: 2
physmap,
cfi_probe,
mtdblock 4kB Live 0xbf03f000
refrence count: 0
-
mtd_blkdevs 7kB Live 0xbf039000
refrence count: 1
mtdblock,
mtd 48kB Live 0xbf024000
refrence count: 17
physmap,
jffs2,
cfi_cmdset_0002,
cmdlinepart,
mtdblock,
mtd_blkdevs,
uio 8kB Live 0xbf01d000
refrence count: 0
-
xt_tcpudp 2kB Live 0xbf019000
refrence count: 0
-
ipt_REJECT 2kB Live 0xbf015000
refrence count: 0
-
iptable_filter 1kB Live 0xbf011000
refrence count: 0
-
ip_tables 11kB Live 0xbf00a000
refrence count: 1
iptable_filter,
x_tables 16kB Live 0xbf000000
refrence count: 4
xt_tcpudp,
ipt_REJECT,
iptable_filter,
ip_tables,
****** pagecache_info: ******
/rel_mem_filecache_tc11/0 : nrpages = 24051.
/volatile/log/auth.log : nrpages = 1947.
/usr/bin/gdb : nrpages = 845.
/lib/libcrypto.so.1.0.0 : nrpages = 418.
/usr/lib/libgio-2.0.so.0.3600.4 : nrpages = 391.
/lib/libc-2.18.so : nrpages = 370.
/usr/lib/libperl.so.5.14.3 : nrpages = 348.
/usr/lib/libglib-2.0.so.0.3600.4 : nrpages = 314.
/usr/lib/libstdc++.so.6.0.17 : nrpages = 277.
/fs_stress_t/fs_stress_t/testcase/bin/fsback/unit : nrpages = 256.
/fs_stress_t/fs_stress_t_src/testcase/fsback/unit : nrpages = 256.
/usr/bin/makedumpfile : nrpages = 238.
/usr/bin/perf : nrpages = 228.
/usr/sbin/sshd : nrpages = 226.
/usr/bin/ssh : nrpages = 202.
/usr/lib/libbfd-2.23.2.so : nrpages = 195.
/volatile/log/syslog : nrpages = 192.
/volatile/log/kern.log : nrpages = 186.
/lib/libm-2.18.so : nrpages = 173.
/volatile/log/error : nrpages = 162.
*****************End oom extend info.*****************
Out of memory: Kill process 9134 (init) score 3 or sacrifice child
Killed process 9134 (init) total-vm:1868kB, anon-rss:84kB, file-rss:572kB
Kill process 1 (init) sharing same memory
[RSM][SIG]Kernel:tr(pid:8611|tid:8611) send SIG[9] to init(pid:1|tid:1).
CPU: 0 PID: 8611 Comm: tr Tainted: G O 3.10.53-HULK2 #1
[<c0018e68>] (unwind_backtrace+0x0/0x11c) from [<c0014548>] (show_stack+0x10/0x14)
[<c0014548>] (show_stack+0x10/0x14) from [<bf173640>] (send_signal_entry+0xd4/0x144 [rsm])
[<bf173640>] (send_signal_entry+0xd4/0x144 [rsm]) from [<c0037028>] (__send_signal+0x2bc/0x310)
[<c0037028>] (__send_signal+0x2bc/0x310) from [<c003710c>] (send_signal+0x90/0x94)
[<c003710c>] (send_signal+0x90/0x94) from [<c0037b88>] (do_send_sig_info+0x3c/0x64)
[<c0037b88>] (do_send_sig_info+0x3c/0x64) from [<c00c7718>] (oom_kill_process+0x34c/0x3d8)
[<c00c7718>] (oom_kill_process+0x34c/0x3d8) from [<c00c7bf4>] (out_of_memory+0x26c/0x2b0)
[<c00c7bf4>] (out_of_memory+0x26c/0x2b0) from [<c00cad8c>] (__alloc_pages_nodemask+0x558/0x6f8)
[<c00cad8c>] (__alloc_pages_nodemask+0x558/0x6f8) from [<c0106e2c>] (pipe_write+0x238/0x494)
[<c0106e2c>] (pipe_write+0x238/0x494) from [<c00ff5ec>] (do_sync_write+0x74/0x98)
[<c00ff5ec>] (do_sync_write+0x74/0x98) from [<c00fff80>] (vfs_write+0xcc/0x1a8)
[<c00fff80>] (vfs_write+0xcc/0x1a8) from [<c0100374>] (SyS_write+0x38/0x64)
[<c0100374>] (SyS_write+0x38/0x64) from [<c0010960>] (ret_fast_syscall+0x0/0x60)
[RSM][SIG]Kernel:tr(pid:8611|tid:8611) send SIG[9] to init(pid:9134|tid:9134).
CPU: 0 PID: 8611 Comm: tr Tainted: G O 3.10.53-HULK2 #1
[<c0018e68>] (unwind_backtrace+0x0/0x11c) from [<c0014548>] (show_stack+0x10/0x14)
[<c0014548>] (show_stack+0x10/0x14) from [<bf173640>] (send_signal_entry+0xd4/0x144 [rsm])
[<bf173640>] (send_signal_entry+0xd4/0x144 [rsm]) from [<c0037028>] (__send_signal+0x2bc/0x310)
[<c0037028>] (__send_signal+0x2bc/0x310) from [<c003710c>] (send_signal+0x90/0x94)
[<c003710c>] (send_signal+0x90/0x94) from [<c0037b88>] (do_send_sig_info+0x3c/0x64)
[<c0037b88>] (do_send_sig_info+0x3c/0x64) from [<c00c7750>] (oom_kill_process+0x384/0x3d8)
[<c00c7750>] (oom_kill_process+0x384/0x3d8) from [<c00c7bf4>] (out_of_memory+0x26c/0x2b0)
[<c00c7bf4>] (out_of_memory+0x26c/0x2b0) from [<c00cad8c>] (__alloc_pages_nodemask+0x558/0x6f8)
[<c00cad8c>] (__alloc_pages_nodemask+0x558/0x6f8) from [<c0106e2c>] (pipe_write+0x238/0x494)
[<c0106e2c>] (pipe_write+0x238/0x494) from [<c00ff5ec>] (do_sync_write+0x74/0x98)
[<c00ff5ec>] (do_sync_write+0x74/0x98) from [<c00fff80>] (vfs_write+0xcc/0x1a8)
[<c00fff80>] (vfs_write+0xcc/0x1a8) from [<c0100374>] (SyS_write+0x38/0x64)
[<c0100374>] (SyS_write+0x38/0x64) from [<c0010960>] (ret_fast_syscall+0x0/0x60)
[RSM][SIG]init(pid:9134|tid:9134) deliver SIG[9].
[RSM][SIG]init(pid:1|tid:1) deliver SIG[9].
Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000009

On 2015/12/1 12:15, Chenjie (K) wrote:

Thank you reply, we run a test case.

A new log:

Out of memory: Kill process 8520 (sshd) score 11 or sacrifice child
Killed process 8520 (sshd) total-vm:5812kB, anon-rss:404kB, file-rss:2132kB
[RSM][SIG]Kernel:dd(pid:8612|tid:8612) send SIG[9] to
sshd(pid:8520|tid:8520).
CPU: 0 PID: 8612 Comm: dd Tainted: G O 3.10.53-HULK2 #1
[<c0018e68>] (unwind_backtrace+0x0/0x11c) from [<c0014548>]
(show_stack+0x10/0x14)
[<c0014548>] (show_stack+0x10/0x14) from [<bf173640>]
(send_signal_entry+0xd4/0x144 [rsm])
[<bf173640>] (send_signal_entry+0xd4/0x144 [rsm]) from [<c0037028>]
(__send_signal+0x2bc/0x310)
[<c0037028>] (__send_signal+0x2bc/0x310) from [<c003710c>]
(send_signal+0x90/0x94)
[<c003710c>] (send_signal+0x90/0x94) from [<c0037b88>]
(do_send_sig_info+0x3c/0x64)
[<c0037b88>] (do_send_sig_info+0x3c/0x64) from [<c00c7750>]
(oom_kill_process+0x384/0x3d8)
[<c00c7750>] (oom_kill_process+0x384/0x3d8) from [<c00c7bf4>]
(out_of_memory+0x26c/0x2b0)
[<c00c7bf4>] (out_of_memory+0x26c/0x2b0) from [<c00cad8c>]
(__alloc_pages_nodemask+0x558/0x6f8)
[<c00cad8c>] (__alloc_pages_nodemask+0x558/0x6f8) from [<c00d647c>]
(shmem_getpage_gfp+0x1bc/0x5e0)
[<c00d647c>] (shmem_getpage_gfp+0x1bc/0x5e0) from [<c00c4a24>]
(generic_file_buffered_write+0xdc/0x23c)
[<c00c4a24>] (generic_file_buffered_write+0xdc/0x23c) from [<c00c5b7c>]
(__generic_file_aio_write+0x33c/0x3a8)
[<c00c5b7c>] (__generic_file_aio_write+0x33c/0x3a8) from [<c00c5c3c>]
(generic_file_aio_write+0x54/0xb0)
[<c00c5c3c>] (generic_file_aio_write+0x54/0xb0) from [<c00ff5ec>]
(do_sync_write+0x74/0x98)
[<c00ff5ec>] (do_sync_write+0x74/0x98) from [<c00fff80>]
(vfs_write+0xcc/0x1a8)
[<c00fff80>] (vfs_write+0xcc/0x1a8) from [<c0100374>] (SyS_write+0x38/0x64)
[<c0100374>] (SyS_write+0x38/0x64) from [<c0010960>]
(ret_fast_syscall+0x0/0x60)
[RSM][SIG]sshd(pid:8520|tid:8520) deliver SIG[9].
[RSM][SIG]tr(pid:9088|tid:9088) deliver SIG[9].
dd invoked oom-killer: gfp_mask=0x200da, order=0, oom_score_adj=0
dd cpuset=/ mems_allowed=0
CPU: 0 PID: 8612 Comm: dd Tainted: G O 3.10.53-HULK2 #1
[<c0018e68>] (unwind_backtrace+0x0/0x11c) from [<c0014548>]
(show_stack+0x10/0x14)
[<c0014548>] (show_stack+0x10/0x14) from [<c02e22b4>]
(dump_header.isra.12+0x90/0x1c0)
[<c02e22b4>] (dump_header.isra.12+0x90/0x1c0) from [<c00c7428>]
(oom_kill_process+0x5c/0x3d8)
[<c00c7428>] (oom_kill_process+0x5c/0x3d8) from [<c00c7bf4>]
(out_of_memory+0x26c/0x2b0)
[<c00c7bf4>] (out_of_memory+0x26c/0x2b0) from [<c00cad8c>]
(__alloc_pages_nodemask+0x558/0x6f8)
[<c00cad8c>] (__alloc_pages_nodemask+0x558/0x6f8) from [<c00d647c>]
(shmem_getpage_gfp+0x1bc/0x5e0)
[<c00d647c>] (shmem_getpage_gfp+0x1bc/0x5e0) from [<c00c4a24>]
(generic_file_buffered_write+0xdc/0x23c)
[<c00c4a24>] (generic_file_buffered_write+0xdc/0x23c) from [<c00c5b7c>]
(__generic_file_aio_write+0x33c/0x3a8)
[<c00c5b7c>] (__generic_file_aio_write+0x33c/0x3a8) from [<c00c5c3c>]
(generic_file_aio_write+0x54/0xb0)
[<c00c5c3c>] (generic_file_aio_write+0x54/0xb0) from [<c00ff5ec>]
(do_sync_write+0x74/0x98)
[<c00ff5ec>] (do_sync_write+0x74/0x98) from [<c00fff80>]
(vfs_write+0xcc/0x1a8)
[<c00fff80>] (vfs_write+0xcc/0x1a8) from [<c0100374>] (SyS_write+0x38/0x64)
[<c0100374>] (SyS_write+0x38/0x64) from [<c0010960>]
(ret_fast_syscall+0x0/0x60)
Mem-info:
Normal per-cpu:
CPU 0: hi: 90, btch: 15 usd: 15
CPU 1: hi: 90, btch: 15 usd: 19
active_anon:1505 inactive_anon:35705 isolated_anon:0
active_file:0 inactive_file:1 isolated_file:0
unevictable:10743 dirty:0 writeback:0 unstable:0
free:452 slab_reclaimable:1377 slab_unreclaimable:2922
mapped:833 shmem:36300 pagetables:161 bounce:0
free_cma:0
Normal free:1808kB min:1812kB low:2264kB high:2716kB active_anon:6020kB
inactive_anon:142820kB active_file:0kB inactive_file:4kB
unevictable:42972kB isolated(anon):0kB isolated(file):0kB
present:307200kB managed:205416kB mlocked:0kB dirty:0kB writeback:0kB
mapped:3332kB shmem:145200kB slab_reclaimable:5508kB
slab_unreclaimable:11688kB kernel_stack:672kB pagetables:644kB
unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:23
all_unreclaimable? yes
lowmem_reserve[]: 0 0 0
Normal: 24*4kB (UEMR) 21*8kB (UER) 5*16kB (UEM) 2*32kB (MR) 2*64kB (M)
2*128kB (M) 2*256kB (M) 1*512kB (M) 0*1024kB 0*2048kB 0*4096kB = 1816kB
47049 total pagecache pages
76800 pages of RAM
679 free pages
22676 reserved pages
2830 slab pages
532708 pages shared
0 pages swap cached
[ pid ] uid tgid total_vm rss nr_ptes swapents oom_score_adj name
[ 1021] 0 1021 493 139 5 0 0 RATC
[ 1023] 0 1023 493 123 5 0 -1000 RATC
[ 1112] 0 1112 1302 511 4 0 -1000 sshd
[ 1130] 0 1130 824 278 5 0 0 crond
[ 1505] 0 1505 490 130 5 0 0
take_cpu_rate
[ 1506] 0 1506 490 32 5 0 0
take_cpu_rate
[ 1508] 0 1508 490 32 5 0 0
take_cpu_rate
[ 2315] 0 2315 731 165 5 0 0 getty
[11839] 0 11839 731 191 5 0 0
debug_runtest.s
[11848] 0 11848 731 165 5 0 0
istress.sh
[11852] 0 11852 730 156 5 0 0
spacectl.sh
[12109] 0 12109 730 156 5 0 0
bsd_stress.sh
[ 8552] 0 8552 462 130 4 0 0
lockf.test
[ 8553] 0 8553 462 45 4 0 0
lockf.test
[ 8554] 0 8554 462 86 4 0 0
lockf.test
[ 8555] 0 8555 462 86 4 0 0
lockf.test
[ 8557] 0 8557 462 86 4 0 0
lockf.test
[10732] 0 10732 462 16 4 0 0
lockf.test
[10042] 0 10042 730 132 5 0 0 bash
[10043] 0 10043 730 159 5 0 0
runtest.sh
[10068] 0 10068 730 92 5 0 0
runtest.sh
[10069] 0 10069 730 159 5 0 0
rel_mem_inodeca
[10072] 0 10072 697 99 4 0 0 sleep
[ 8403] 0 8403 697 98 4 0 0 cp
[ 8569] 0 8569 730 159 5 0 0
runtest.sh
[ 8606] 0 8606 730 92 5 0 0
runtest.sh
[ 8607] 0 8607 730 155 5 0 0
rel_mem_filecac
[ 8610] 0 8610 697 99 4 0 0 sleep
[ 8611] 0 8611 732 99 5 0 0 tr
[ 8612] 0 8612 730 99 5 0 0 dd
[ 9073] 0 9073 1454 593 6 0 0 sshd
[ 9083] 502 9083 1302 283 5 0 0 sshd
[ 9086] 0 9086 1463 542 7 0 0
syslog-ng
[ 9090] 0 9090 730 19 4 0 0
rel_mem_inodeca

more info about it
*****************Start oom extend info.*****************
Vmallocinfo Start >>>>>>>>>>>>>>>>>>>>
0xbf000000-0xbf006000 24576 module_alloc_update_bounds+0xc/0x5c
pages=5 vmalloc
0xbf00a000-0xbf00e000 16384 module_alloc_update_bounds+0xc/0x5c
pages=3 vmalloc
0xbf011000-0xbf013000 8192 module_alloc_update_bounds+0xc/0x5c
pages=1 vmalloc
0xbf015000-0xbf017000 8192 module_alloc_update_bounds+0xc/0x5c
pages=1 vmalloc
0xbf019000-0xbf01b000 8192 module_alloc_update_bounds+0xc/0x5c
pages=1 vmalloc
0xbf01d000-0xbf021000 16384 module_alloc_update_bounds+0xc/0x5c
pages=3 vmalloc
0xbf024000-0xbf032000 57344 module_alloc_update_bounds+0xc/0x5c
pages=13 vmalloc
0xbf039000-0xbf03c000 12288 module_alloc_update_bounds+0xc/0x5c
pages=2 vmalloc
0xbf03f000-0xbf042000 12288 module_alloc_update_bounds+0xc/0x5c
pages=2 vmalloc
0xbf044000-0xbf046000 8192 module_alloc_update_bounds+0xc/0x5c
pages=1 vmalloc
0xbf048000-0xbf04a000 8192 module_alloc_update_bounds+0xc/0x5c
pages=1 vmalloc
0xbf04c000-0xbf04e000 8192 module_alloc_update_bounds+0xc/0x5c
pages=1 vmalloc
0xbf050000-0xbf054000 16384 module_alloc_update_bounds+0xc/0x5c
pages=3 vmalloc
0xbf056000-0xbf059000 12288 module_alloc_update_bounds+0xc/0x5c
pages=2 vmalloc
0xbf05b000-0xbf069000 57344 module_alloc_update_bounds+0xc/0x5c
pages=13 vmalloc
0xbf06d000-0xbf08e000 135168 module_alloc_update_bounds+0xc/0x5c
pages=32 vmalloc
0xbf096000-0xbf0ce000 229376 module_alloc_update_bounds+0xc/0x5c
pages=55 vmalloc
0xbf0e8000-0xbf0ea000 8192 module_alloc_update_bounds+0xc/0x5c
pages=1 vmalloc
0xbf0ec000-0xbf0fe000 73728 module_alloc_update_bounds+0xc/0x5c
pages=17 vmalloc
0xbf105000-0xbf12a000 151552 module_alloc_update_bounds+0xc/0x5c
pages=36 vmalloc
0xbf13d000-0xbf145000 32768 module_alloc_update_bounds+0xc/0x5c
pages=7 vmalloc
0xbf149000-0xbf168000 126976 module_alloc_update_bounds+0xc/0x5c
pages=30 vmalloc
0xbf173000-0xbf179000 24576 module_alloc_update_bounds+0xc/0x5c
pages=5 vmalloc
0xbf17c000-0xbf180000 16384 module_alloc_update_bounds+0xc/0x5c
pages=3 vmalloc
0xbf182000-0xbf186000 16384 module_alloc_update_bounds+0xc/0x5c
pages=3 vmalloc
0xbf192000-0xbf1a5000 77824 module_alloc_update_bounds+0xc/0x5c
pages=18 vmalloc
0xbf1ab000-0xbf1ad000 8192 module_alloc_update_bounds+0xc/0x5c
pages=1 vmalloc
0xd3000000-0xd3021000 135168 ekbox_reinit+0x3c/0xcc phys=9fa00000 ioremap
0xd3022000-0xd3024000 8192 of_iomap+0x30/0x3c phys=1a001000 ioremap
0xd3024000-0xd3027000 12288 of_iomap+0x30/0x3c phys=1a000000 ioremap
0xd3028000-0xd302a000 8192 of_iomap+0x30/0x3c phys=20000000 ioremap
0xd302a000-0xd302c000 8192 of_iomap+0x30/0x3c phys=20011000 ioremap
0xd302c000-0xd302f000 12288 of_iomap+0x30/0x3c phys=1a000000 ioremap
0xd3030000-0xd3032000 8192 of_iomap+0x30/0x3c phys=20013000 ioremap
0xd3032000-0xd3034000 8192 bsp_init_led+0x320/0x5e8 phys=f000b000
ioremap
0xd3034000-0xd3036000 8192 bsp_init_led+0x394/0x5e8 phys=f000b000
ioremap
0xd303a000-0xd307b000 266240 atomic_pool_init+0x0/0x11c phys=8d500000 user
0xd3080000-0xd3082000 8192 l2cache_init+0xb8/0x3b8 phys=16800000 ioremap
0xd3916000-0xd3959000 274432 0xbf08e26c pages=66 vmalloc
0xd3959000-0xd3965000 49152 0xbf08e280 pages=11 vmalloc
0xd3965000-0xd396a000 20480 0xbf08e2e0 pages=4 vmalloc
0xd396a000-0xd396d000 12288 0xbf08e2ec pages=2 vmalloc
0xd3a3f000-0xd3a42000 12288 pcpu_extend_area_map+0x18/0xa0 pages=2
vmalloc
0xd3ad8000-0xd3ada000 8192 0xbf1a54ac phys=9fffe000 ioremap
0xd3adc000-0xd3ade000 8192 0xbf1a517c phys=30000000 ioremap
0xd3ade000-0xd3ae0000 8192 0xbf1a51b0 phys=20000000 ioremap
0xd3af2000-0xd3af4000 8192 0xbf1a517c phys=30001000 ioremap
0xd3af4000-0xd3af6000 8192 0xbf1a51b0 phys=20000000 ioremap
0xd3af6000-0xd3af8000 8192 0xbf1a517c phys=30002000 ioremap
0xd3af8000-0xd3afa000 8192 0xbf1a51b0 phys=20000000 ioremap
0xd3afa000-0xd3afc000 8192 0xbf1a517c phys=30003000 ioremap
0xd3afc000-0xd3afe000 8192 0xbf1a51b0 phys=20000000 ioremap
0xd3c00000-0xd3e01000 2101248 kbox_proc_mem_write+0x104/0x1cc
phys=9f800000 ioremap
0xd4000000-0xd8001000 67112960 devm_ioremap+0x38/0x70 phys=40000000 ioremap
0xfe001000-0xfe002000 4096 iotable_init+0x0/0xb4 phys=20001000 ioremap
0xfe200000-0xfe201000 4096 iotable_init+0x0/0xb4 phys=1a000000 ioremap
0xfee00000-0xff000000 2097152 pci_reserve_io+0x0/0x30 ioremap
Vmallocinfo End <<<<<<<<<<<<<<<<<<<<

[SLUB]Slabinfo Start >>>>>>>>>>>>>>>>>>>>
# name <active_objs> <num_objs> <objsize> <objperslab>
<pagesperslab> : slabdata <active_slabs> <num_slabs>
nfs_direct_cache 0 0 120 34 1 : slabdata 0 0
nfs_commit_data 18 18 448 18 2 : slabdata 1 1
nfs_read_data 0 0 576 14 2 : slabdata 0 0
nfs_inode_cache 0 0 816 20 4 : slabdata 0 0
rpc_inode_cache 0 0 512 16 2 : slabdata 0 0
jffs2_refblock 432 432 248 16 1 : slabdata 27 27
jffs2_i 274 546 552 14 2 : slabdata 39 39
bsg_cmd 0 0 288 14 1 : slabdata 0 0
mqueue_inode_cache 23 23 704 23 4 : slabdata 1 1
squashfs_inode_cache 0 0 576 14 2 : slabdata
0 0
ext2_inode_cache 0 0 640 12 2 : slabdata 0 0
pid_namespace 102 102 80 51 1 : slabdata 2 2
user_namespace 0 0 224 18 1 : slabdata 0 0
posix_timers_cache 0 0 160 25 1 : slabdata 0 0
UDP-Lite 0 0 640 12 2 : slabdata 0 0
UDP 24 24 640 12 2 : slabdata 2 2
tw_sock_TCP 64 64 128 32 1 : slabdata 2 2
TCP 24 24 1344 12 4 : slabdata 2 2
eventpoll_pwq 204 204 40 102 1 : slabdata 2 2
sgpool-128 12 12 2560 12 8 : slabdata 1 1
sgpool-64 12 12 1280 12 4 : slabdata 1 1
sgpool-16 12 12 320 12 1 : slabdata 1 1
blkdev_queue 50 50 1272 25 8 : slabdata 2 2
blkdev_requests 54 54 216 18 1 : slabdata 3 3
fsnotify_event_holder 7696 8960 16 256 1 : slabdata 35
35
fsnotify_event 112 112 72 56 1 : slabdata 2 2
biovec-256 10 10 3072 10 8 : slabdata 1 1
biovec-128 0 0 1536 21 8 : slabdata 0 0
biovec-64 0 0 768 21 4 : slabdata 0 0
sock_inode_cache 64 64 512 16 2 : slabdata 4 4
skbuff_fclone_cache 63 63 384 21 2 : slabdata 3 3
file_lock_cache 1904 1904 120 34 1 : slabdata 56 56
net_namespace 0 0 2240 14 8 : slabdata 0 0
shmem_inode_cache 10184 10890 528 15 2 : slabdata 726 726
proc_inode_cache 391 496 504 16 2 : slabdata 31 31
sigqueue 169 308 144 28 1 : slabdata 11 11
bdev_cache 23 23 704 23 4 : slabdata 1 1
inode_cache 2920 3315 472 17 2 : slabdata 195 195
dentry 13777 20412 144 28 1 : slabdata 729 729
buffer_head 0 0 64 64 1 : slabdata 0 0
vm_area_struct 1702 1748 88 46 1 : slabdata 38 38
signal_cache 171 240 640 12 2 : slabdata 20 20
sighand_cache 110 144 1344 12 4 : slabdata 12 12
task_struct 134 182 2304 14 8 : slabdata 13 13
anon_vma_chain 2364 3328 32 128 1 : slabdata 26 26
anon_vma 2409 2409 56 73 1 : slabdata 33 33
debug_objects_cache 3594 8500 24 170 1 : slabdata 50 50
radix_tree_node 1259 1352 304 13 1 : slabdata 104 104
idr_layer_cache 105 105 1080 15 4 : slabdata 7 7
kmalloc-8192 20 20 8192 4 8 : slabdata 5 5
kmalloc-4096 48 48 4096 8 8 : slabdata 6 6
kmalloc-2048 96 96 2048 16 8 : slabdata 6 6
kmalloc-1024 330 400 1024 16 4 : slabdata 25 25
kmalloc-512 911 976 512 16 2 : slabdata 61 61
kmalloc-256 211 240 256 16 1 : slabdata 15 15
kmalloc-192 1228 1344 192 21 1 : slabdata 64 64
kmalloc-128 2324 2624 128 32 1 : slabdata 82 82
kmalloc-64 23749 24192 64 64 1 : slabdata 378 378
kmem_cache_node 128 128 64 64 1 : slabdata 2 2
kmem_cache 96 96 128 32 1 : slabdata 3 3
Slabinfo End <<<<<<<<<<<<<<<<<<<<

Filesystem 1K-blocks Used Available Use(%) Mounted on
tmpfs 524288 4 524284 0% /tmp
none 10240 10240 0 100% /var
tmpfs 108248 16 108232 0% /dev
tmpfs 108248 0 108248 0% /dev/shm
tmpfs 173192 134960 38232 77% /tmp
*****smap info of all task:*****
smaps info of task-sshd[9073], rss:2372 kB:
smaps info of task-syslog-ng[9086], rss:2168 kB:
smaps info of task-sshd[1112], rss:2044 kB:
smaps info of task-sshd[9083], rss:1132 kB:
smaps info of task-crond[1130], rss:1112 kB:
******** mem info ***** Total: 216496 kB
Total free: 1808 kB
User space: 191816 kB
Mlock: 0 kB
Kernel space: 22872 kB
Bootmem reserved: 90704 kB
kernel_image_info:
Kernel code: 0x80008000-0x8043369f
Kernel data: 0x80496000-0x8056559b
module info:
physmap 3kB Live 0xbf1ab000 (O)
refrence count: 1
-
Drv_Gmac_K 71kB Live 0xbf192000 (O)
refrence count: 0
-
rtos_snapshot 10kB Live 0xbf182000 (O)
refrence count: 0
-
rtos_kbox_panic 10kB Live 0xbf17c000 (O)
refrence count: 0
-
rsm 16kB Live 0xbf173000 (O)
refrence count: 0
-
nfsv4 119kB Live 0xbf149000
refrence count: 0
-
nfsv3 24kB Live 0xbf13d000
refrence count: 0
-
nfs 141kB Live 0xbf105000
refrence count: 2
nfsv4,
nfsv3,
lockd 64kB Live 0xbf0ec000
refrence count: 2
nfsv3,
nfs,
nfs_acl 2kB Live 0xbf0e8000
refrence count: 1
nfsv3,
sunrpc 216kB Live 0xbf096000
refrence count: 5
nfsv4,
nfsv3,
nfs,
lockd,
nfs_acl,
jffs2 125kB Live 0xbf06d000
refrence count: 1
-
cfi_cmdset_0002 51kB Live 0xbf05b000
refrence count: 1
-
cfi_probe 5kB Live 0xbf056000
refrence count: 0
-
cfi_util 11kB Live 0xbf050000
refrence count: 2
cfi_cmdset_0002,
cfi_probe,
gen_probe 2kB Live 0xbf04c000
refrence count: 1
cfi_probe,
cmdlinepart 2kB Live 0xbf048000
refrence count: 0
-
chipreg 2kB Live 0xbf044000
refrence count: 2
physmap,
cfi_probe,
mtdblock 4kB Live 0xbf03f000
refrence count: 0
-
mtd_blkdevs 7kB Live 0xbf039000
refrence count: 1
mtdblock,
mtd 48kB Live 0xbf024000
refrence count: 17
physmap,
jffs2,
cfi_cmdset_0002,
cmdlinepart,
mtdblock,
mtd_blkdevs,
uio 8kB Live 0xbf01d000
refrence count: 0
-
xt_tcpudp 2kB Live 0xbf019000
refrence count: 0
-
ipt_REJECT 2kB Live 0xbf015000
refrence count: 0
-
iptable_filter 1kB Live 0xbf011000
refrence count: 0
-
ip_tables 11kB Live 0xbf00a000
refrence count: 1
iptable_filter,
x_tables 16kB Live 0xbf000000
refrence count: 4
xt_tcpudp,
ipt_REJECT,
iptable_filter,
ip_tables,
****** pagecache_info: ******
/rel_mem_filecache_tc11/0 : nrpages = 23260.
/volatile/log/auth.log : nrpages = 1947.
/usr/bin/gdb : nrpages = 845.
/lib/libcrypto.so.1.0.0 : nrpages = 418.
/usr/lib/libgio-2.0.so.0.3600.4 : nrpages = 391.
/lib/libc-2.18.so : nrpages = 370.
/usr/lib/libperl.so.5.14.3 : nrpages = 348.
/usr/lib/libglib-2.0.so.0.3600.4 : nrpages = 314.
/usr/lib/libstdc++.so.6.0.17 : nrpages = 277.
/fs_stress_t/fs_stress_t/testcase/bin/fsback/unit : nrpages = 256.
/fs_stress_t/fs_stress_t_src/testcase/fsback/unit : nrpages = 256.
/usr/bin/makedumpfile : nrpages = 238.
/usr/bin/perf : nrpages = 228.
/usr/sbin/sshd : nrpages = 226.
/usr/bin/ssh : nrpages = 202.
/usr/lib/libbfd-2.23.2.so : nrpages = 195.
/volatile/log/syslog : nrpages = 192.
/volatile/log/kern.log : nrpages = 186.
/lib/libm-2.18.so : nrpages = 173.
/volatile/log/error : nrpages = 162.
*****************End oom extend info.*****************

On 2015/12/1 6:08, David Rientjes wrote:

On Mon, 30 Nov 2015, Chenjie (K) wrote:

My kernel version is 3.10 ,but the 4.3 is the same
and the newest code is

for_each_process(p) {
if (!process_shares_mm(p, mm))
continue;
if (same_thread_group(p, victim))
continue;
if (unlikely(p->flags & PF_KTHREAD))
continue;
if (p->signal->oom_score_adj == OOM_SCORE_ADJ_MIN)
continue;

so this not add the ïis_global_init also.

when we vfork (CLONE_VM) a process,the copy_mm
if (clone_flags & CLONE_VM) {
atomic_inc(&oldmm->mm_users);
mm = oldmm;
goto good_mm;
}
use the parent mm.

I think it might be a legitimate fix, but if the oom killer is killing
pid
9134 in your log then I assume the next call to the oom killer will panic
the system anyway unless there is actually a process using less memory
that can be killed. Would you mind enabling vm.oom_dump_tasks (it should
default to enabled) and post the entire oom killer log?

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