On 05/13/2013 09:12 AM, richard -rw- weinberger wrote:
> This looks like another issue.
> Are you testing process_vm_writev() with trinity?
Yes, I use trinity for that

Well, with stub2 + strnlen I do now have the following situations :


Stressing a 32 bit Gentoo Linux with trinity firing up only the syscall 
process_vm_writev() gives after few minutes :


2013-05-13T18:59:01.000+02:00 trinity cron[1030]: (root) CMD (rm -f 
/var/spool/cron/lastrun/cron.hourly)
2013-05-13T19:00:01.349+02:00 trinity kernel: trinity-child0 invoked 
oom-killer: gfp_mask=0x201da, order=0, oom_score_adj=500
2013-05-13T19:00:01.349+02:00 trinity kernel: CPU: 0 PID: 1028 Comm: 
trinity-child0 Not tainted 3.10.0-rc1-00036-g05d129d #9
2013-05-13T19:00:01.349+02:00 trinity kernel: 40e87b2c 40e87b88 0835c79d 
41e28b3c 41e287b0 000201da 00000000 000001f4 
2013-05-13T19:00:01.349+02:00 trinity kernel: 08443920 40e87b5c 08071dfe 
00000000 40e87b68 083614bc 00000001 40e87b88 
2013-05-13T19:00:01.349+02:00 trinity kernel: 08278d25 08443920 00000001 
40e80000 41e28600 41e28600 41e28600 40e87bcc 40e87b00:  [<08060cff>] 
show_stack+0xcf/0x100
2013-05-13T19:00:01.349+02:00 trinity kernel: 40e87b24:  [<0835ed79>] 
dump_stack+0x26/0x28
2013-05-13T19:00:01.349+02:00 trinity kernel: 40e87b34:  [<0835c79d>] 
dump_header.isra.12+0x93/0x1c8
2013-05-13T19:00:01.349+02:00 trinity kernel: 40e87b8c:  [<080ce620>] 
oom_kill_process+0x60/0x310
2013-05-13T19:00:01.349+02:00 trinity kernel: 40e87bd0:  [<080cedcd>] 
out_of_memory+0x2bd/0x320
2013-05-13T19:00:01.349+02:00 trinity kernel: 40e87c1c:  [<080d2258>] 
__alloc_pages_nodemask+0x628/0x750
2013-05-13T19:00:02.116+02:00 trinity kernel: 40e87ca8:  [<080cbc6b>] 
filemap_fault+0x32b/0x480
2013-05-13T19:00:02.116+02:00 trinity kernel: 40e87cf0:  [<080e3d6e>] 
__do_fault+0x9e/0x450
2013-05-13T19:00:02.116+02:00 trinity kernel: 40e87d4c:  [<080e68ca>] 
handle_pte_fault+0x2aa/0x780
2013-05-13T19:00:02.116+02:00 trinity kernel: 40e87da4:  [<080e6e6c>] 
handle_mm_fault+0xcc/0xe0
2013-05-13T19:00:02.116+02:00 trinity kernel: 40e87dd8:  [<08061d57>] 
handle_page_fault+0x127/0x280
2013-05-13T19:00:02.116+02:00 trinity kernel: 40e87e1c:  [<08061f86>] 
segv+0xa6/0x2b0
2013-05-13T19:00:02.116+02:00 trinity kernel: 40e87ecc:  [<08062203>] 
segv_handler+0x73/0x80
2013-05-13T19:00:02.116+02:00 trinity kernel: 40e87ef4:  [<0807503a>] 
userspace+0x30a/0x590
2013-05-13T19:00:02.116+02:00 trinity kernel: 40e87fec:  [<0805f7fc>] 
fork_handler+0x6c/0x70
2013-05-13T19:00:02.116+02:00 trinity kernel: 40e87ffc:  [<00000000>] 0x0
2013-05-13T19:00:01.000+02:00 trinity cron[1033]: (root) CMD (test -x 
/usr/sbin/run-crons && /usr/sbin/run-crons)
2013-05-13T19:00:02.151+02:00 trinity kernel: 
2013-05-13T19:00:02.151+02:00 trinity kernel: Mem-Info:
2013-05-13T19:00:02.151+02:00 trinity kernel: Normal per-cpu:
2013-05-13T19:00:02.151+02:00 trinity kernel: CPU    0: hi:  186, btch:  31 
usd:  56
2013-05-13T19:00:02.151+02:00 trinity kernel: active_anon:107921 
inactive_anon:107946 isolated_anon:0
2013-05-13T19:00:02.151+02:00 trinity kernel: active_file:38 inactive_file:431 
isolated_file:0
2013-05-13T19:00:02.151+02:00 trinity kernel: unevictable:0 dirty:0 
writeback:37542 unstable:0
2013-05-13T19:00:02.151+02:00 trinity kernel: free:923 slab_reclaimable:408 
slab_unreclaimable:6561
2013-05-13T19:00:02.151+02:00 trinity kernel: mapped:433 shmem:355 
pagetables:326 bounce:0
2013-05-13T19:00:02.151+02:00 trinity kernel: free_cma:0
2013-05-13T19:00:02.162+02:00 trinity kernel: Normal free:3692kB min:3796kB 
low:4744kB high:5692kB active_anon:431684kB inactive_anon:431784kB 
active_file:152kB inactive_file:1724kB unevictable:0kB isolated(anon):0kB 
isolated(file):0kB present:950896kB managed:900876kB mlocked:0kB dirty:0kB 
writeback:150168kB mapped:1732kB shmem:1420kB slab_reclaimable:1632kB 
slab_unreclaimable:26244kB kernel_stack:1568kB pagetables:1304kB unstable:0kB 
bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:322 all_unreclaimable? 
yes
2013-05-13T19:00:02.162+02:00 trinity kernel: lowmem_reserve[]: 0 0
2013-05-13T19:00:02.162+02:00 trinity kernel: Normal: 5*4kB (UEM) 43*8kB (UEM) 
8*16kB (UM) 8*32kB (UEM) 6*64kB (EM) 18*128kB (M) 1*256kB (U) 0*512kB 0*1024kB 
0*2048kB 0*4096kB = 3692kB
2013-05-13T19:00:02.162+02:00 trinity kernel: 38595 total pagecache pages
2013-05-13T19:00:02.162+02:00 trinity kernel: 37759 pages in swap cache
2013-05-13T19:00:02.162+02:00 trinity kernel: Swap cache stats: add 65561, 
delete 27802, find 25/28
2013-05-13T19:00:02.162+02:00 trinity kernel: Free swap  = 0kB
2013-05-13T19:00:02.162+02:00 trinity kernel: Total swap = 262140kB
2013-05-13T19:00:02.162+02:00 trinity kernel: 237724 pages RAM
2013-05-13T19:00:02.162+02:00 trinity kernel: 12505 pages reserved
2013-05-13T19:00:02.169+02:00 trinity kernel: 262899 pages shared
2013-05-13T19:00:02.169+02:00 trinity kernel: 223402 pages non-shared
2013-05-13T19:00:02.169+02:00 trinity kernel: [ pid ]   uid  tgid total_vm      
rss nr_ptes swapents oom_score_adj name
2013-05-13T19:00:02.169+02:00 trinity kernel: [  445]     0   445     2242      
  0       6       73         -1000 udevd
2013-05-13T19:00:02.169+02:00 trinity kernel: [  869]     0   869     1076      
  0       4       39             0 syslog-ng
2013-05-13T19:00:02.169+02:00 trinity kernel: [  870]     0   870     1827      
  0       5      138             0 syslog-ng
2013-05-13T19:00:02.169+02:00 trinity kernel: [  884]     0   884     1334      
  0       5      805             0 haveged
2013-05-13T19:00:02.169+02:00 trinity kernel: [  898]     0   898      531      
  0       4       15             0 rngd
2013-05-13T19:00:02.169+02:00 trinity kernel: [  947]     0   947      596      
  0       4       28             0 dhcpcd
2013-05-13T19:00:02.169+02:00 trinity kernel: [  963]     0   963     1289      
  0       5       84         -1000 sshd
2013-05-13T19:00:02.180+02:00 trinity kernel: [  991]     0   991     1133      
  6       5       25             0 cron
2013-05-13T19:00:02.180+02:00 trinity kernel: [ 1008]     0  1008      599      
  0       4       27             0 agetty
2013-05-13T19:00:02.180+02:00 trinity kernel: [ 1009]     0  1009     2088      
  1       5      147             0 sshd
2013-05-13T19:00:02.180+02:00 trinity kernel: [ 1012]     0  1012      545      
  0       4       17             0 tail
2013-05-13T19:00:02.180+02:00 trinity kernel: [ 1019]     0  1019     2088      
  1       5      145             0 sshd
2013-05-13T19:00:02.180+02:00 trinity kernel: [ 1021]  1000  1021     2088      
 89       5      122             0 sshd
2013-05-13T19:00:02.180+02:00 trinity kernel: [ 1022]  1000  1022      855      
  0       4       36             0 bash
2013-05-13T19:00:02.180+02:00 trinity kernel: [ 1025]  1000  1025     4141      
353       6     1049             0 trinity
2013-05-13T19:00:02.180+02:00 trinity kernel: [ 1026]  1000  1026     4141      
 10       5     1042             0 trinity-watchdo
2013-05-13T19:00:02.180+02:00 trinity kernel: [ 1027]  1000  1027     4141      
  2       5     1053             0 trinity-main
2013-05-13T19:00:02.189+02:00 trinity kernel: [ 1028]  1000  1028   245051   
178095     241    63858           500 trinity-child0
2013-05-13T19:00:02.189+02:00 trinity kernel: Out of memory: Kill process 1028 
(trinity-child0) score 1331 or sacrifice child
2013-05-13T19:00:02.189+02:00 trinity kernel: Killed process 1028 
(trinity-child0) total-vm:980204kB, anon-rss:710876kB, file-rss:1504kB
2013-05-13T19:01:20.426+02:00 trinity kernel: sshd invoked oom-killer: 
gfp_mask=0x201da, order=0, oom_score_adj=0
2013-05-13T19:01:20.426+02:00 trinity kernel: CPU: 0 PID: 1021 Comm: sshd Not 
tainted 3.10.0-rc1-00036-g05d129d #9
2013-05-13T19:01:20.426+02:00 trinity kernel: 40c5fb2c 40c5fb88 0835c79d 
41f4af3c 41f4abb0 000201da 00000000 00000000 
2013-05-13T19:01:20.426+02:00 trinity kernel: 08443920 40c5fb5c 08071dfe 
00000000 40c5fb68 083614bc 00000001 40c5fb88 
2013-05-13T19:01:20.426+02:00 trinity kernel: 08278d25 08443920 00000001 
40c58000 41e28600 41e28600 41e28600 40c5fbcc 40c5fb00:  [<08060cff>] 
show_stack+0xcf/0x100
2013-05-13T19:01:20.426+02:00 trinity kernel: 40c5fb24:  [<0835ed79>] 
dump_stack+0x26/0x28
2013-05-13T19:01:20.426+02:00 trinity kernel: 40c5fb34:  [<0835c79d>] 
dump_header.isra.12+0x93/0x1c8
2013-05-13T19:01:20.426+02:00 trinity kernel: 40c5fb8c:  [<080ce620>] 
oom_kill_process+0x60/0x310
2013-05-13T19:01:20.426+02:00 trinity kernel: 40c5fbd0:  [<080cedcd>] 
out_of_memory+0x2bd/0x320
2013-05-13T19:01:20.426+02:00 trinity kernel: 40c5fc1c:  [<080d2258>] 
__alloc_pages_nodemask+0x628/0x750
2013-05-13T19:01:20.559+02:00 trinity kernel: 40c5fca8:  [<080cbc6b>] 
filemap_fault+0x32b/0x480
2013-05-13T19:01:20.559+02:00 trinity kernel: 40c5fcf0:  [<080e3d6e>] 
__do_fault+0x9e/0x450
2013-05-13T19:01:20.559+02:00 trinity kernel: 40c5fd4c:  [<080e68ca>] 
handle_pte_fault+0x2aa/0x780
2013-05-13T19:01:20.559+02:00 trinity kernel: 40c5fda4:  [<080e6e6c>] 
handle_mm_fault+0xcc/0xe0
2013-05-13T19:01:20.559+02:00 trinity kernel: 40c5fdd8:  [<08061d57>] 
handle_page_fault+0x127/0x280
2013-05-13T19:01:20.559+02:00 trinity kernel: 40c5fe1c:  [<08061f86>] 
segv+0xa6/0x2b0
2013-05-13T19:01:20.559+02:00 trinity kernel: 40c5fecc:  [<08062203>] 
segv_handler+0x73/0x80
2013-05-13T19:01:20.559+02:00 trinity kernel: 40c5fef4:  [<0807503a>] 
userspace+0x30a/0x590
2013-05-13T19:01:20.559+02:00 trinity kernel: 40c5ffec:  [<0805f7fc>] 
fork_handler+0x6c/0x70
2013-05-13T19:01:20.559+02:00 trinity kernel: 40c5fffc:  [<00000000>] 0x0
2013-05-13T19:01:20.568+02:00 trinity kernel: 
2013-05-13T19:01:20.568+02:00 trinity kernel: Mem-Info:
2013-05-13T19:01:20.568+02:00 trinity kernel: Normal per-cpu:
2013-05-13T19:01:20.568+02:00 trinity kernel: CPU    0: hi:  186, btch:  31 
usd:  30
2013-05-13T19:01:20.568+02:00 trinity kernel: active_anon:108197 
inactive_anon:108240 isolated_anon:0
2013-05-13T19:01:20.568+02:00 trinity kernel: active_file:11 inactive_file:320 
isolated_file:32
2013-05-13T19:01:20.568+02:00 trinity kernel: unevictable:0 dirty:0 
writeback:34549 unstable:0
2013-05-13T19:01:20.568+02:00 trinity kernel: free:946 slab_reclaimable:401 
slab_unreclaimable:6107
2013-05-13T19:01:20.568+02:00 trinity kernel: mapped:399 shmem:353 
pagetables:329 bounce:0
2013-05-13T19:01:20.568+02:00 trinity kernel: free_cma:0
2013-05-13T19:01:20.580+02:00 trinity kernel: Normal free:3784kB min:3796kB 
low:4744kB high:5692kB active_anon:432788kB inactive_anon:432960kB 
active_file:44kB inactive_file:1280kB unevictable:0kB isolated(anon):0kB 
isolated(file):128kB present:950896kB managed:900876kB mlocked:0kB dirty:0kB 
writeback:138196kB mapped:1596kB shmem:1412kB slab_reclaimable:1604kB 
slab_unreclaimable:24428kB kernel_stack:1568kB pagetables:1316kB unstable:0kB 
bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:1077 all_unreclaimable? 
yes
2013-05-13T19:01:20.580+02:00 trinity kernel: lowmem_reserve[]: 0 0
2013-05-13T19:01:20.580+02:00 trinity kernel: Normal: 16*4kB (U) 3*8kB (U) 
5*16kB (M) 9*32kB (M) 10*64kB (UM) 21*128kB (UM) 0*256kB 0*512kB 0*1024kB 
0*2048kB 0*4096kB = 3784kB
2013-05-13T19:01:20.580+02:00 trinity kernel: 35426 total pagecache pages
2013-05-13T19:01:20.580+02:00 trinity kernel: 34714 pages in swap cache
2013-05-13T19:01:20.580+02:00 trinity kernel: Swap cache stats: add 129644, 
delete 94930, find 500/605
2013-05-13T19:01:20.580+02:00 trinity kernel: Free swap  = 0kB
2013-05-13T19:01:20.580+02:00 trinity kernel: Total swap = 262140kB
2013-05-13T19:01:20.580+02:00 trinity kernel: 237724 pages RAM
2013-05-13T19:01:20.580+02:00 trinity kernel: 12505 pages reserved
2013-05-13T19:01:20.589+02:00 trinity kernel: 262528 pages shared
2013-05-13T19:01:20.589+02:00 trinity kernel: 223425 pages non-shared
2013-05-13T19:01:20.589+02:00 trinity kernel: [ pid ]   uid  tgid total_vm      
rss nr_ptes swapents oom_score_adj name
2013-05-13T19:01:20.589+02:00 trinity kernel: [  445]     0   445     2242      
  0       6       73         -1000 udevd
2013-05-13T19:01:20.589+02:00 trinity kernel: [  869]     0   869     1076      
  0       4       39             0 syslog-ng
2013-05-13T19:01:20.589+02:00 trinity kernel: [  870]     0   870     1827      
 38       5      100             0 syslog-ng
2013-05-13T19:01:20.589+02:00 trinity kernel: [  884]     0   884     1334      
  0       5      805             0 haveged
2013-05-13T19:01:20.589+02:00 trinity kernel: [  898]     0   898      531      
  5       4       10             0 rngd
2013-05-13T19:01:20.589+02:00 trinity kernel: [  947]     0   947      596      
  0       4       28             0 dhcpcd
2013-05-13T19:01:20.589+02:00 trinity kernel: [  963]     0   963     1289      
  0       5       84         -1000 sshd
2013-05-13T19:01:20.601+02:00 trinity kernel: [  991]     0   991     1133      
  9       5       22             0 cron
2013-05-13T19:01:20.601+02:00 trinity kernel: [ 1008]     0  1008      599      
  0       4       27             0 agetty
2013-05-13T19:01:20.601+02:00 trinity kernel: [ 1009]     0  1009     2088      
 32       5      121             0 sshd
2013-05-13T19:01:20.601+02:00 trinity kernel: [ 1012]     0  1012      545      
  8       4        9             0 tail
2013-05-13T19:01:20.601+02:00 trinity kernel: [ 1019]     0  1019     2088      
  0       5      145             0 sshd
2013-05-13T19:01:20.601+02:00 trinity kernel: [ 1021]  1000  1021     2088      
 46       5      122             0 sshd
2013-05-13T19:01:20.601+02:00 trinity kernel: [ 1022]  1000  1022      855      
  0       4       36             0 bash
2013-05-13T19:01:20.601+02:00 trinity kernel: [ 1025]  1000  1025     4141      
  2       6     1049             0 trinity
2013-05-13T19:01:20.601+02:00 trinity kernel: [ 1026]  1000  1026     4141      
 11       5     1041             0 trinity-watchdo
2013-05-13T19:01:20.601+02:00 trinity kernel: [ 1027]  1000  1027     4141      
  8       5     1047             0 trinity-main
2013-05-13T19:01:20.611+02:00 trinity kernel: [ 1031]  1000  1031   248890   
181640     244    63945           500 trinity-child0
2013-05-13T19:01:20.611+02:00 trinity kernel: Out of memory: Kill process 1031 
(trinity-child0) score 1344 or sacrifice child
2013-05-13T19:01:20.611+02:00 trinity kernel: Killed process 1031 
(trinity-child0) total-vm:995560kB, anon-rss:724988kB, file-rss:1572kB
2013-05-13T19:02:02.000+02:00 trinity sshd[1045]: pam_unix(sshd:session): 
session opened for user root by (uid=0)
2013-05-13T19:02:02.000+02:00 trinity shutdown[1048]: shutting down for system 
halt
2013-05-13T19:02:02.000+02:00 trinity sshd[1045]: pam_unix(sshd:session): 
session closed for user root




Stressing the image w/ trinity with all available syscall except 
process_vm_writev() often gives for the syscall mremap():




2013-05-13T19:15:28.000+02:00 trinity sshd[1027]: pam_unix(sshd:session): 
session opened for user root by (uid=0)
2013-05-13T19:16:10.789+02:00 trinity kernel: Stub registers -
2013-05-13T19:16:10.789+02:00 trinity kernel:   0 - 100000
2013-05-13T19:16:10.789+02:00 trinity kernel:   1 - 300000
2013-05-13T19:16:10.789+02:00 trinity kernel:   2 - 0
2013-05-13T19:16:10.789+02:00 trinity kernel:   3 - 0
2013-05-13T19:16:10.789+02:00 trinity kernel:   4 - 0
2013-05-13T19:16:10.789+02:00 trinity kernel:   5 - 0
2013-05-13T19:16:10.789+02:00 trinity kernel:   6 - 0
2013-05-13T19:16:10.789+02:00 trinity kernel:   7 - 7b
2013-05-13T19:16:10.789+02:00 trinity kernel:   8 - 7b
2013-05-13T19:16:10.793+02:00 trinity kernel:   9 - 0
2013-05-13T19:16:10.793+02:00 trinity kernel:   10 - 33
2013-05-13T19:16:10.793+02:00 trinity kernel:   11 - ffffffff
2013-05-13T19:16:10.793+02:00 trinity kernel:   12 - 1000c3
2013-05-13T19:16:10.793+02:00 trinity kernel:   13 - 73
2013-05-13T19:16:10.793+02:00 trinity kernel:   14 - 10206
2013-05-13T19:16:10.793+02:00 trinity kernel:   15 - 101028
2013-05-13T19:16:10.793+02:00 trinity kernel:   16 - 7b
2013-05-13T19:16:10.793+02:00 trinity kernel: wait_stub_done : failed to wait 
for SIGTRAP, pid = 29533, n = 29533, errno = 0, status = 0xb7f
2013-05-13T19:18:42.388+02:00 trinity kernel: INFO: task trinity-child0:1035 
blocked for more than 120 seconds.
2013-05-13T19:18:42.388+02:00 trinity kernel: "echo 0 > 
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
2013-05-13T19:18:42.388+02:00 trinity kernel: trinity-child0  D 40001282     0  
1035   1023 0x00000002
2013-05-13T19:18:42.388+02:00 trinity kernel: 08438acc 00000001 00000000 
402579e4 0805f98f 4025baac 08438acc 40250000
2013-05-13T19:18:42.388+02:00 trinity kernel: 4025b600 40257a14 0836071c 
4025b600 08438620 00000001 080fad7d 083649c0
2013-05-13T19:18:42.388+02:00 trinity kernel: 000000bb 40250000 400aa94c 
400aa948 4025b600 40257a28 083607b5 40257a28 402579d0:  [<0805f98f>] 
__switch_to+0x5f/0x100
2013-05-13T19:18:42.388+02:00 trinity kernel: 402579e8:  [<0836071c>] 
__schedule+0x32c/0x370
2013-05-13T19:18:42.388+02:00 trinity kernel: 40257a18:  [<083607b5>] 
schedule+0x55/0x60
2013-05-13T19:18:42.388+02:00 trinity kernel: 40257a2c:  [<08361337>] 
__down_write_nested+0x67/0xb0
2013-05-13T19:18:42.388+02:00 trinity kernel: 40257a60:  [<08361399>] 
__down_write+0x19/0x1b
2013-05-13T19:18:42.392+02:00 trinity kernel: 40257a70:  [<0835ff71>] 
down_write+0x11/0x13
2013-05-13T19:18:42.392+02:00 trinity kernel: 40257a7c:  [<0814cc9a>] 
do_coredump+0x16a/0x1090
2013-05-13T19:18:42.392+02:00 trinity kernel: 40257b48:  [<0808c943>] 
get_signal_to_deliver+0x553/0x580
2013-05-13T19:18:42.392+02:00 trinity kernel: 40257b74:  [<08060adc>] 
kern_do_signal+0x28c/0x370
2013-05-13T19:18:42.392+02:00 trinity kernel: 40257c4c:  [<08060bdd>] 
do_signal+0x1d/0x20
2013-05-13T19:18:42.392+02:00 trinity kernel: 40257c58:  [<08061ed8>] 
fatal_sigsegv+0x28/0x30
2013-05-13T19:18:42.392+02:00 trinity kernel: 40257c6c:  [<080749fb>] 
wait_stub_done+0xeb/0x100
2013-05-13T19:18:42.392+02:00 trinity kernel: 40257c98:  [<08073edf>] 
run_syscall_stub+0x16f/0x2c0
2013-05-13T19:18:42.392+02:00 trinity kernel: 40257ccc:  [<080744ef>] 
unmap+0xff/0x110
2013-05-13T19:18:42.392+02:00 trinity kernel: 40257d14:  [<080610c4>] 
do_ops+0xa4/0x150
2013-05-13T19:18:42.396+02:00 trinity kernel: 40257d54:  [<0806168e>] 
fix_range_common+0x46e/0x4b0
2013-05-13T19:18:42.396+02:00 trinity kernel: 40257dd4:  [<080619ee>] 
flush_tlb_mm_range+0x2e/0x30
2013-05-13T19:18:42.396+02:00 trinity kernel: 40257dec:  [<080e8cab>] 
unmap_region+0xcb/0xe0
2013-05-13T19:18:42.396+02:00 trinity kernel: 40257e28:  [<080ea951>] 
do_munmap+0x231/0x2a0
2013-05-13T19:18:42.396+02:00 trinity kernel: 40257e60:  [<080ecf53>] 
SyS_mremap+0x263/0x480
2013-05-13T19:18:42.396+02:00 trinity kernel: 40257eac:  [<08062ac2>] 
handle_syscall+0x82/0xb0
2013-05-13T19:18:42.396+02:00 trinity kernel: 40257ef4:  [<0807519d>] 
userspace+0x46d/0x590
2013-05-13T19:18:42.396+02:00 trinity kernel: 40257fec:  [<0805f7fc>] 
fork_handler+0x6c/0x70
2013-05-13T19:18:42.396+02:00 trinity kernel: 40257ffc:  [<00000000>] 0x0
2013-05-13T19:18:42.396+02:00 trinity kernel:
2013-05-13T19:20:01.000+02:00 trinity cron[1038]: (root) CMD (test -x 
/usr/sbin/run-crons && /usr/sbin/run-crons)
2013-05-13T19:20:42.383+02:00 trinity kernel: INFO: task trinity-child0:1035 
blocked for more than 120 seconds.
2013-05-13T19:20:42.383+02:00 trinity kernel: "echo 0 > 
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
2013-05-13T19:20:42.383+02:00 trinity kernel: trinity-child0  D 40001282     0  
1035   1023 0x00000002
2013-05-13T19:20:42.383+02:00 trinity kernel: 08438acc 00000001 00000000 
402579e4 0805f98f 4025baac 08438acc 40250000
2013-05-13T19:20:42.383+02:00 trinity kernel: 4025b600 40257a14 0836071c 
4025b600 08438620 00000001 080fad7d 083649c0
2013-05-13T19:20:42.383+02:00 trinity kernel: 000000bb 40250000 400aa94c 
400aa948 4025b600 40257a28 083607b5 40257a28 402579d0:  [<0805f98f>] 
__switch_to+0x5f/0x100
2013-05-13T19:20:42.383+02:00 trinity kernel: 402579e8:  [<0836071c>] 
__schedule+0x32c/0x370
2013-05-13T19:20:42.383+02:00 trinity kernel: 40257a18:  [<083607b5>] 
schedule+0x55/0x60
2013-05-13T19:20:42.383+02:00 trinity kernel: 40257a2c:  [<08361337>] 
__down_write_nested+0x67/0xb0
2013-05-13T19:20:42.383+02:00 trinity kernel: 40257a60:  [<08361399>] 
__down_write+0x19/0x1b
2013-05-13T19:20:42.387+02:00 trinity kernel: 40257a70:  [<0835ff71>] 
down_write+0x11/0x13
2013-05-13T19:20:42.387+02:00 trinity kernel: 40257a7c:  [<0814cc9a>] 
do_coredump+0x16a/0x1090
2013-05-13T19:20:42.387+02:00 trinity kernel: 40257b48:  [<0808c943>] 
get_signal_to_deliver+0x553/0x580
2013-05-13T19:20:42.387+02:00 trinity kernel: 40257b74:  [<08060adc>] 
kern_do_signal+0x28c/0x370
2013-05-13T19:20:42.387+02:00 trinity kernel: 40257c4c:  [<08060bdd>] 
do_signal+0x1d/0x20
2013-05-13T19:20:42.387+02:00 trinity kernel: 40257c58:  [<08061ed8>] 
fatal_sigsegv+0x28/0x30
2013-05-13T19:20:42.387+02:00 trinity kernel: 40257c6c:  [<080749fb>] 
wait_stub_done+0xeb/0x100
2013-05-13T19:20:42.387+02:00 trinity kernel: 40257c98:  [<08073edf>] 
run_syscall_stub+0x16f/0x2c0
2013-05-13T19:20:42.387+02:00 trinity kernel: 40257ccc:  [<080744ef>] 
unmap+0xff/0x110
2013-05-13T19:20:42.387+02:00 trinity kernel: 40257d14:  [<080610c4>] 
do_ops+0xa4/0x150
2013-05-13T19:20:42.392+02:00 trinity kernel: 40257d54:  [<0806168e>] 
fix_range_common+0x46e/0x4b0
2013-05-13T19:20:42.392+02:00 trinity kernel: 40257dd4:  [<080619ee>] 
flush_tlb_mm_range+0x2e/0x30
2013-05-13T19:20:42.392+02:00 trinity kernel: 40257dec:  [<080e8cab>] 
unmap_region+0xcb/0xe0
2013-05-13T19:20:42.392+02:00 trinity kernel: 40257e28:  [<080ea951>] 
do_munmap+0x231/0x2a0
2013-05-13T19:20:42.392+02:00 trinity kernel: 40257e60:  [<080ecf53>] 
SyS_mremap+0x263/0x480
2013-05-13T19:20:42.392+02:00 trinity kernel: 40257eac:  [<08062ac2>] 
handle_syscall+0x82/0xb0
2013-05-13T19:20:42.392+02:00 trinity kernel: 40257ef4:  [<0807519d>] 
userspace+0x46d/0x590
2013-05-13T19:20:42.392+02:00 trinity kernel: 40257fec:  [<0805f7fc>] 
fork_handler+0x6c/0x70
2013-05-13T19:20:42.392+02:00 trinity kernel: 40257ffc:  [<00000000>] 0x0
2013-05-13T19:20:42.392+02:00 trinity kernel:



And stressing the image with all syscalls except process_vm_writev() and 
mremap()
runs now for a while w/o any interesting things.


-- 
MfG/Sincerely
Toralf Förster
pgp finger print: 7B1A 07F4 EC82 0F90 D4C2 8936 872A E508 7DB6 9DA3

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