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Running trinity (1 process, no victim files, just "$>trinity -C1) for a longer time 
within a 32 bit user mode linux image with a recent git kernel (host: 3.11.3 guest 3.12-rc3-g...)
yields into this konsole message :

 * Starting local
net.core.warnings = 0                                                                         [ ok ]
BUG: soft lockup - CPU#0 stuck for 23s! [trinity-child0:2031]


and at the host t1 of the "linux"-processes eats all CPU cycles at 1 CPU core.
2 subsequent made back traces made with

$> sudo gdb /home/tfoerste/devel/linux/linux 28144 -n -batch -ex bt

shows nearly a similar position around __get_user_pages() - both are attached.

I'm not surprised that trinity harms a systems - I'm just wondering whether this particular picture is
expected or if it points to an issue.


FWIW the last lines of trinity log were :


[2031] [94] setsid() = 2031
[2031] [95] setresgid(rgid=0xffff33e3, egid=0xffffff93, sgid=0x22000040) = -1 (Operation not permitted)
[2031] [96] vmsplice(fd=5, iov=0x85501e0, nr_segs=300, flags=9) = 0x3000
[2031] [97] setresuid(ruid=0x80549193, euid=0xc61041e0, suid=0xff19b6fa) = -1 (Operation not permitted)
[2031] [98] setpriority(which=0xff010000, who=0xf3737373, niceval=0x8088960c) = -1 (Invalid argument)
[2031] [99] socketcall(call=1, args=0x8550200) = -1 (Address family not supported by protocol)
[2031] [100] access(filename="�", mode=2017) = -1 (Invalid argument)
[2031] [101] getgroups(gidsetsize=0, grouplist=0x80d0000[page_rand]) = 3
[2031] [102] msync(start=0xc0100220, len=0, flags=3) = -1 (Invalid argument)
[2031] [103] sigpending(set=0x40025000) = 0
[2031] [104] signalfd4(ufd=383, user_mask=1, sizemask=0xa4200000, flags=0x80800) = -1 (Invalid argument)
[2031] [105] sendfile(out_fd=383, in_fd=382, offset=0, count=4096) = -1 (Invalid argument)
[2031] [106] fanotify_mark(fanotify_fd=382, flags=5, mask=0x8000023, dfd=382, pathname="/proc/1092/task/1092/fdinfo/68") = -1 (Invalid argument)
[2031] [107] wait4(upid=1, stat_addr=4, options=0xd761979b, ru=8) = -1 (Invalid argument)
[2031] [108] sigpending(set=0x80ca000[page_zeros]) = 0
[2031] [109] setresuid(ruid=0xefffd6fc, euid=0x1bf4c92f, suid=0xffff2e33) = -1 (Operation not permitted)
[2031] [110] munlock(addr=0x40025000, len=34) = 0
[2031] [111] timer_delete(timer_id=0xffffffdc) = -1 (Invalid argument)
[2031] [112] sched_get_priority_max(policy=0x10000040) = -1 (Invalid argument)
[2031] [113] syslog(type=0xc1000000, buf=1, len=0x82a5) = -1 (Operation not permitted)
[2031] [114] setpriority(which=0xc4c806c6, who=0xffffff01, niceval=0xffff0682) = -1 (Invalid argument)
[2031] [115] getgroups16(gidsetsize=0xfffe, grouplist=1) = -1 (Bad address)
[2031] [116] rename(oldname=4, newname=8) = -1 (Bad address)
[2031] [117] inotify_init() = 654
[2031] [118] getgid() = 100
[2031] [119] fstatat64(dfd=382, filename="/sys/devices/virtual/net/sit0/duplex", statbuf=0, flag=0xb545d727) = -1 (Invalid argument)
[2031] [120] unlinkat(dfd=382, pathname="/proc/sys/net/ipv4/neigh/default/retrans_time", flag=0xc00ef76) = -1 (Invalid argument)
[2031] [121] timerfd_create(clockid=0, flags=0) = 655
[2031] [122] munlock(addr=4, len=0x3fff) = -1 (Cannot allocate memory)
[2031] [123] fremovexattr(fd=382, name=0) = -1 (Bad address)
[2031] [124] sched_get_priority_min(policy=0xff58bfef) = -1 (Invalid argument)
[2031] [125] mq_timedreceive(mqdes=397, u_msg_ptr=4, msg_len=5245, u_msg_prio=0xc0100220, u_abs_timeout=0xc0100220) = -1 (Bad address)
[2031] [126] chdir(filename="/proc/116/net/ptype") = -1 (Not a directory)
[2031] [127] ssetmask(newmask=0x88000092) = 0
[2031] [128] statfs(pathname="/proc/6/mounts", buf=0) = -1 (Bad address)
[2031] [129] fchown16(fd=397, user=104, group=0x94100000) = -1 (Operation not permitted)
[2031] [130] fchdir(fd=397) = -1 (Not a directory)
[2031] [131] mkdir(pathname="/proc/1092/task/1092/fdinfo/316", mode=525) = -1 (File exists)
[2031] [132] fsetxattr(fd=386, name=0x856f158, value=0x8571160, size=0, flags=0) = -1 (Numerical result out of range)
[2031] [133] io_setup(nr_events=4095, ctxp=0x40266000) ^CKilled by signal 2.

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