Am 28.10.14 um 17:04 schrieb Ian Campbell:
On Tue, 2014-10-28 at 16:39 +0100, Atom2 wrote:
Please can you run the command under gdb and grab a back trace.
I have now re-compiled a few more pieces with debugging support, namely
gcc-8.4.3 and glibc and again run the command
xl create pfsense -c
under gdb. The new (full) backtrace output is attached to this mail and
might provide you with some more clues.
BTW the same problem also seems to exist for xen-4.4.1/gcc-4.8.3 and was
found independent of my report - please see further details and a
discussion at http://forums.gentoo.org/viewtopic-t-1003746.html and the
related bug report at https://bugs.gentoo.org/show_bug.cgi?id=528690.
Ian - if you (or anybody else) could add any more insight into this, it
would be very much appreciated.
Thanks again Atom2
vm-host auto [512] # gdb --args xl create pfsense -c
GNU gdb (Gentoo 7.7.1 p1) 7.7.1
Copyright (C) 2014 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://bugs.gentoo.org/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from xl...Reading symbols from
/usr/lib64/debug//usr/sbin/xl.debug...done.
done.
(gdb) run
Starting program: /usr/sbin/xl create pfsense -c
warning: Could not load shared library symbols for linux-vdso.so.1.
Do you need "set solib-search-path" or "set sysroot"?
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Parsing config from pfsense
xc: info: VIRTUAL MEMORY ARRANGEMENT:
Loader: 0000000000100000->00000000001c10c4
Modules: 0000000000000000->0000000000000000
TOTAL: 0000000000000000->000000001f800000
ENTRY ADDRESS: 0000000000100000
xc: info: PHYSICAL MEMORY ALLOCATION:
4KB PAGES: 0x0000000000000200
2MB PAGES: 0x00000000000000fb
1GB PAGES: 0x0000000000000000
[New Thread 0x7ffff7ff5700 (LWP 2489)]
[New Thread 0x7ffff7fe6700 (LWP 2601)]
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7ffff7fe6700 (LWP 2601)]
0x00007ffff5892624 in execute_stack_op (op_ptr=0x7ffff7329b83
"w\240\001\006\020\b\002w(\020\t\002w0\020\n\002w8\020\v\003w\300",
op_end=0x7ffff7329b87
"\020\b\002w(\020\t\002w0\020\n\002w8\020\v\003w\300",
context=context@entry=0x7ffff7fe5190,
initial=initial@entry=0) at
/var/tmp/portage/sys-devel/gcc-4.8.3/work/gcc-4.8.3/libgcc/unwind-dw2.c:516
516
/var/tmp/portage/sys-devel/gcc-4.8.3/work/gcc-4.8.3/libgcc/unwind-dw2.c: No
such file or directory.
(gdb) bt full
#0 0x00007ffff5892624 in execute_stack_op (
op_ptr=0x7ffff7329b83
"w\240\001\006\020\b\002w(\020\t\002w0\020\n\002w8\020\v\003w\300",
op_end=0x7ffff7329b87
"\020\b\002w(\020\t\002w0\020\n\002w8\020\v\003w\300",
context=context@entry=0x7ffff7fe5190,
initial=initial@entry=0) at
/var/tmp/portage/sys-devel/gcc-4.8.3/work/gcc-4.8.3/libgcc/unwind-dw2.c:516
stack = {0 <repeats 44 times>, 140737354027168, 140737312803731,
140737354027184, 140737354027488, 140737340660732,
140737340663016, 140737354027312, 140737312808747, 140737354027328,
140733193388035, 140737340663560, 352, 10, 167, 220,
0, 0, 0, 0, 140737354129736}
stack_elt = <optimized out>
#1 0x00007ffff589308c in uw_update_context_1
(context=context@entry=0x7ffff7fe55a0, fs=fs@entry=0x7ffff7fe52f0)
at
/var/tmp/portage/sys-devel/gcc-4.8.3/work/gcc-4.8.3/libgcc/unwind-dw2.c:1424
exp = <optimized out>
len = <optimized out>
orig_context = {reg = {0x7ffff7fe5698, 0x7ffff7fe56a0, 0x0,
0x7ffff7fe56a8, 0x0, 0x0, 0x7ffff7fe56f0, 0x7ffff7fe5180, 0x0,
0x0, 0x0, 0x0, 0x7ffff7fe56b0, 0x7ffff7fe56b8, 0x7ffff7fe56c0,
0x7ffff7fe56c8, 0x7ffff7fe56f8, 0x0},
cfa = 0x7ffff7fe5700, ra = 0x7ffff7322e00 <__restore_rt>, lsda = 0x0,
bases = {tbase = 0x0, dbase = 0x0,
func = 0x7ffff7322dff}, flags = 4611686018427387904, version = 0,
args_size = 0, by_value = '\000' <repeats 17 times>}
cfa = <optimized out>
i = <optimized out>
tmp_sp = {ptr = 140737354028800, word = 140737354028800}
#2 0x00007ffff5893405 in uw_update_context
(context=context@entry=0x7ffff7fe55a0, fs=fs@entry=0x7ffff7fe52f0)
at
/var/tmp/portage/sys-devel/gcc-4.8.3/work/gcc-4.8.3/libgcc/unwind-dw2.c:1506
No locals.
#3 0x00007ffff5894086 in uw_advance_context (fs=0x7ffff7fe52f0,
context=0x7ffff7fe55a0)
at
/var/tmp/portage/sys-devel/gcc-4.8.3/work/gcc-4.8.3/libgcc/unwind-dw2.c:1529
No locals.
#4 _Unwind_ForcedUnwind_Phase2 (exc=exc@entry=0x7ffff7fe6d70,
context=context@entry=0x7ffff7fe55a0)
at /var/tmp/portage/sys-devel/gcc-4.8.3/work/gcc-4.8.3/libgcc/unwind.inc:185
fs = {regs = {reg = {{loc = {reg = 140737340677076, offset =
140737340677076,
exp = 0x7ffff7329bd4
"\003w\220\001\020\002\003w\230\001\020\a\003w\240\001\020\020\003w\250\001"},
how = REG_SAVED_EXP}, {loc = {reg = 140737340677070, offset =
140737340677070,
exp = 0x7ffff7329bce "\003w\210\001\020"}, how =
REG_SAVED_EXP}, {loc = {reg = 140737340677082,
offset = 140737340677082, exp = 0x7ffff7329bda
"\003w\230\001\020\a\003w\240\001\020\020\003w\250\001"},
how = REG_SAVED_EXP}, {loc = {reg = 140737340677064, offset =
140737340677064,
exp = 0x7ffff7329bc8
"\003w\200\001\020\001\003w\210\001\020"}, how = REG_SAVED_EXP}, {loc = {
reg = 140737340677052, offset = 140737340677052, exp =
0x7ffff7329bbc "\003", <incomplete sequence \360>},
how = REG_SAVED_EXP}, {loc = {reg = 140737340677046, offset =
140737340677046,
exp = 0x7ffff7329bb6 "\003", <incomplete sequence \350>}, how
= REG_SAVED_EXP}, {loc = {reg = 140737340677058,
offset = 140737340677058, exp = 0x7ffff7329bc2 "\003",
<incomplete sequence \370>}, how = REG_SAVED_EXP}, {
loc = {reg = 140737340677088, offset = 140737340677088,
exp = 0x7ffff7329be0 "\003w\240\001\020\020\003w\250\001"},
how = REG_SAVED_EXP}, {loc = {reg = 140737340677001,
offset = 140737340677001, exp = 0x7ffff7329b89
"\002w(\020\t\002w0\020\n\002w8\020\v\003w\300"},
how = REG_SAVED_EXP}, {loc = {reg = 140737340677006, offset =
140737340677006,
exp = 0x7ffff7329b8e "\002w0\020\n\002w8\020\v\003w\300"},
how = REG_SAVED_EXP}, {loc = {reg = 140737340677011,
offset = 140737340677011, exp = 0x7ffff7329b93
"\002w8\020\v\003w\300"}, how = REG_SAVED_EXP}, {loc = {
reg = 140737340677016, offset = 140737340677016, exp =
0x7ffff7329b98 "\003w\300"}, how = REG_SAVED_EXP}, {
loc = {reg = 140737340677022, offset = 140737340677022, exp =
0x7ffff7329b9e "\003", <incomplete sequence \310>},
how = REG_SAVED_EXP}, {loc = {reg = 140737340677028, offset =
140737340677028,
exp = 0x7ffff7329ba4 "\003", <incomplete sequence \320>}, how
= REG_SAVED_EXP}, {loc = {reg = 140737340677034,
offset = 140737340677034, exp = 0x7ffff7329baa "\003",
<incomplete sequence \330>}, how = REG_SAVED_EXP}, {
loc = {reg = 140737340677040, offset = 140737340677040, exp =
0x7ffff7329bb0 "\003", <incomplete sequence \340>},
how = REG_SAVED_EXP}, {loc = {reg = 140737340677094, offset =
140737340677094,
exp = 0x7ffff7329be6 "\003w\250\001"}, how = REG_SAVED_EXP},
{loc = {reg = 0, offset = 0, exp = 0x0},
how = REG_UNSAVED}}, prev = 0x0, cfa_offset = 0, cfa_reg = 0,
cfa_exp = 0x7ffff7329b82
"\004w\240\001\006\020\b\002w(\020\t\002w0\020\n\002w8\020\v\003w\300", cfa_how
= CFA_EXP},
pc = 0x7ffff7322dff, personality = 0x0, data_align = -8, code_align =
1, retaddr_column = 16, fde_encoding = 27 '\033',
lsda_encoding = 255 '\377', saw_z = 1 '\001', signal_frame = 1
'\001', eh_ptr = 0x0}
action = 10
stop = 0x7ffff73215e0 <unwind_stop>
stop_argument = 0x7ffff7fe5d30
code = <optimized out>
stop_code = <optimized out>
#5 0x00007ffff589440c in _Unwind_ForcedUnwind (exc=0x7ffff7fe6d70,
stop=stop@entry=0x7ffff73215e0 <unwind_stop>,
stop_argument=0x7ffff7fe5d30) at
/var/tmp/portage/sys-devel/gcc-4.8.3/work/gcc-4.8.3/libgcc/unwind.inc:207
this_context = {reg = {0x7ffff7fe5698, 0x7ffff7fe56a0, 0x0,
0x7ffff7fe56a8, 0x0, 0x0, 0x7ffff7fe56d0, 0x0, 0x0, 0x0, 0x0,
0x0, 0x7ffff7fe56b0, 0x7ffff7fe56b8, 0x7ffff7fe56c0,
0x7ffff7fe56c8, 0x7ffff7fe56d8, 0x0}, cfa = 0x7ffff7fe56e0,
ra = 0x7ffff7321773 <__GI___pthread_unwind+83>, lsda = 0x0, bases =
{tbase = 0x0, dbase = 0x0,
func = 0x7ffff58943a0 <_Unwind_ForcedUnwind>}, flags =
4611686018427387904, version = 0, args_size = 0,
by_value = '\000' <repeats 17 times>}
cur_context = {reg = {0x7ffff7fe5698, 0x7ffff7fe56a0, 0x0,
0x7ffff7fe56a8, 0x0, 0x0, 0x7ffff7fe56f0, 0x0, 0x0, 0x0, 0x0,
0x0, 0x7ffff7fe56b0, 0x7ffff7fe56b8, 0x7ffff7fe56c0,
0x7ffff7fe56c8, 0x7ffff7fe56f8, 0x0}, cfa = 0x7ffff7fe5700,
ra = 0x7ffff7322e00 <__restore_rt>, lsda = 0x0, bases = {tbase = 0x0,
dbase = 0x0, func = 0x7ffff7322dff},
flags = 4611686018427387904, version = 0, args_size = 0, by_value =
'\000' <repeats 17 times>}
code = <optimized out>
#6 0x00007ffff7321773 in __GI___pthread_unwind (buf=<optimized out>) at
unwind.c:129
ibuf = <optimized out>
self = <optimized out>
#7 0x00007ffff7318b89 in __do_cancel () at ../nptl/pthreadP.h:280
No locals.
#8 sigcancel_handler (sig=<optimized out>, si=<optimized out>, ctx=<optimized
out>) at nptl-init.c:214
si = <optimized out>
ctx = <optimized out>
pid = <optimized out>
oldval = <optimized out>
#9 <signal handler called>
No locals.
#10 0x00007ffff7321e8d in read () at ../sysdeps/unix/syscall-template.S:81
No locals.
#11 0x00007ffff6b247c3 in read (__nbytes=16, __buf=0x7fffe80008d0, __fd=14) at
/usr/include/bits/unistd.h:44
No locals.
#12 read_all (fd=14, data=data@entry=0x7fffe80008d0, len=len@entry=16,
nonblocking=nonblocking@entry=0) at xs.c:374
done = <optimized out>
#13 0x00007ffff6b24904 in read_message (h=h@entry=0x555555784280,
nonblocking=nonblocking@entry=0) at xs.c:1139
__cancel_buf = {__cancel_jmp_buf = {{__cancel_jmp_buf =
{93824994525824, 1282643245906007851, 1, 140737488341120,
93824994524064, 140737354032896, 1282643245857773355,
1282645892206696235}, __mask_was_saved = 0}}, __pad = {
0x7ffff7fe5ee0, 0x0, 0x0, 0x0}}
__cancel_arg = 0x7fffe80008c0
__not_first_call = <optimized out>
msg = 0x7fffe80008c0
body = 0x0
saved_errno = 0
ret = -1
#14 0x00007ffff6b25296 in read_thread (arg=0x555555784280) at xs.c:1211
h = 0x555555784280
fd = <optimized out>
#15 0x00007ffff731a36d in start_thread (arg=0x7ffff7fe6700) at
pthread_create.c:309
__res = <optimized out>
pd = 0x7ffff7fe6700
now = <optimized out>
unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140737354032896,
1282643245910202155, 1, 140737488341120, 93824994524064,
140737354032896, 1282643245897619243, 1282642588654638891},
mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0,
0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
not_first_call = <optimized out>
robust = <optimized out>
pagesize_m1 = <optimized out>
sp = <optimized out>
freesize = <optimized out>
__PRETTY_FUNCTION__ = "start_thread"
#16 0x00007ffff7052e0d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:111
No locals.
(gdb)
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