Il 12/05/2015 12:26, Fabio Fantoni ha scritto:
Il 12/05/2015 11:23, Fabio Fantoni ha scritto:
Il 11/05/2015 17:04, Fabio Fantoni ha scritto:
Il 21/04/2015 14:53, Stefano Stabellini ha scritto:
On Tue, 21 Apr 2015, Fabio Fantoni wrote:
Il 21/04/2015 12:49, Stefano Stabellini ha scritto:
On Mon, 20 Apr 2015, Fabio Fantoni wrote:
I updated xen and qemu from xen 4.5.0 with its upstream qemu
included to
xen
4.5.1-pre with qemu upstream from stable-4.5 (changed Config.mk
to use
revision "master").
After few minutes I booted windows 7 64 bit domU qemu crash,
tried 2 times
with same result.
In the domU's qemu log:
qemu-system-i386: malloc.c:3096: sYSMALLOc: Assertion `(old_top ==
(((mbinptr) (((char *) &((av)->bins[((1) - 1) * 2])) -
__builtin_offsetof
(struct malloc_chunk, fd)))) && old_size == 0) || ((unsigned long)
(old_size) >= (unsigned long)((((__builtin_offsetof (struct
malloc_chunk,
fd_nextsize))+((2 * (sizeof(size_t))) - 1)) & ~((2 *
(sizeof(size_t))) -
1))) && ((old_top)->size & 0x1) && ((unsigned long)old_end &
pagemask)
==
0)' failed.
Killing all inferiors
In attachment the full backtrace of qemu crash.
With a fast search after I saw the backtrace I found a probable
cause of
regression (I'm not sure):
http://xenbits.xen.org/gitweb/?p=staging/qemu-upstream-4.5-testing.git;a=commit;h=5c3402816aaddb15156c69df73c54abe4e1c76aa
spice: make sure we don't overflow ssd->buf
Added also qemu-devel and spice-devel as cc.
If you need more informations/tests tell me and I'll post them.
Maybe you could try to revert the offending commit
(5c3402816aaddb15156c69df73c54abe4e1c76aa)? Or even better bisect
the
crash?
Thanks for your reply.
I reverted to 4.5.0 on dom0 for now on that system because I'm
busy trying to
found another problem that cause very bad performance without
errors or
nothing in logs :( I don't know if if xen related, kernel related
or other for
now.
About this regression with spice I'll do further tests in next
days (probably
starting reverting the spice patch in qemu) but any help is
appreciated.
Based on data I have for now is possible that the problem is that
qemu try to
allocate other ram or videoram after domU create but with xen is
not possible?
In the spice related patch I saw something about dynamic
allocation for
example.
It is probably caused by a commit in the range:
1ebb75b1fee779621b63e84fefa7b07354c43a99..0b8fb1ec3d666d1eb8bbff56c76c5e6daa2789e4
there are only 10 commits in that range. By using git bisect you
should
be able to narrow it down in just 3 tests.
Sorry for delay, I was busy with many things, today I retried with
updated stable-4.5 and also reverting "spice: make sure we don't
overflow ssd->buf" (in a second test) but in both case regression
remain :(
Tomorrow probably I'll do other tests.
I did another test, reverting this instead:
http://xenbits.xen.org/gitweb/?p=qemu-upstream-4.5-testing.git;a=commit;h=c9ac5f816bf3a8b56f836b078711dcef6e5c90b8
And now seems I'm unable to reproduce the regression, before happen
after few seconds up to 1-2 minutes, now I use the same domU 15-20
minutes without problem.
Probably is the cause of regression even if seems strange that on
unstable with same patch on tests of some days ago didn't happen.
Any ideas?
Thanks for any reply and sorry for my bad english.
Bad news, qemu crash still happen even if this time in qemu log there
is another output, see attachment.
After take a look on the other patches I saw:
http://xenbits.xen.org/gitweb/?p=qemu-upstream-4.5-testing.git;a=commitdiff;h=7154fba0e51ec985ef621965d1b7120ad424fcbf
With "Conflicts: hw/display/vga.c" in description I'll try to revert
it instead.
Or someone can tell me another probable test I can try?
Tried also to revet the patch above with same result, so I retried with
qemu from 4.5.0 and seems the crash happen also in this case...I'm going
crazy :(
In attachment full gdb log.
Any ideas on how to found the problem please?
Thanks for any reply and sorry for my bad english.
Full backtrace:
#0 0x00007ffff36e8165 in *__GI_raise (sig=<optimized out>) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
pid = <optimized out>
selftid = <optimized out>
#1 0x00007ffff36eb3e0 in *__GI_abort () at abort.c:92
act = {__sigaction_handler = {sa_handler = 0x555558ddeba0, sa_sigaction = 0x555558ddeba0}, sa_mask = {__val = {140737278660816, 140737014337136, 4, 140737014337376, 140737277706678, 206158430256, 140737014337416, 140737014337168, 87, 226653584, 140737351936019, 140737488348083, 140737278647399, 140737278651152, 3096, 140737277299604}}, sa_flags = -474017696, sa_restorer = 0x7ffff36b9c60}
sigs = {__val = {32, 0 <repeats 15 times>}}
#2 0x00007ffff372bdea in __malloc_assert (assertion=<optimized out>, file=<optimized out>, line=<optimized out>, function=<optimized out>) at malloc.c:351
No locals.
#3 0x00007ffff372ed13 in sYSMALLOc (av=<optimized out>, nb=<optimized out>) at malloc.c:3093
snd_brk = <optimized out>
front_misalign = <optimized out>
remainder = <optimized out>
tried_mmap = false
old_size = <optimized out>
size = <optimized out>
old_end = 0x555558ddeba0 ""
correction = <optimized out>
end_misalign = <optimized out>
aligned_brk = <optimized out>
p = <optimized out>
pagemask = 4095
#4 _int_malloc (av=0x7ffff3a3ce40, bytes=<optimized out>) at malloc.c:4776
p = <optimized out>
iters = <optimized out>
nb = 4196368
idx = <optimized out>
bin = <optimized out>
victim = 0x555558ddeba0
size = 0
victim_index = <optimized out>
remainder = <optimized out>
remainder_size = <optimized out>
block = 4
bit = <optimized out>
map = 2138988542
fwd = <optimized out>
bck = <optimized out>
errstr = <optimized out>
__func__ = "_int_malloc"
#5 0x00007ffff3730a70 in *__GI___libc_malloc (bytes=4196352) at malloc.c:3660
ar_ptr = 0x7ffff3a3ce40
victim = 0x400800
__func__ = "__libc_malloc"
#6 0x00007ffff4b1d280 in spice_malloc (n_bytes=4196352) at mem.c:93
mem = <optimized out>
__FUNCTION__ = "spice_malloc"
#7 0x00007ffff4b1d6ee in spice_chunks_linearize (chunks=0x7fffdc088fa0) at mem.c:226
data = <optimized out>
p = <optimized out>
i = <optimized out>
#8 0x00007ffff4afb4e6 in canvas_bitmap_to_surface (canvas=canvas@entry=0x7fffdc0eef70, bitmap=bitmap@entry=0x7fffdc044e88, palette=0x0, want_original=1) at ../spice-common/common/canvas_base.c:738
src = <optimized out>
image = <optimized out>
format = <optimized out>
__FUNCTION__ = "canvas_bitmap_to_surface"
#9 0x00007ffff4afb698 in canvas_get_bits (want_original=<optimized out>, bitmap=0x7fffdc044e88, canvas=0x7fffdc0eef70) at ../spice-common/common/canvas_base.c:1067
palette = <optimized out>
#10 canvas_get_image_internal (canvas=canvas@entry=0x7fffdc0eef70, image=0x7fffdc044e70, want_original=<optimized out>, want_original@entry=0, real_get=real_get@entry=1) at ../spice-common/common/canvas_base.c:1253
descriptor = 0x7fffdc044e70
surface = <optimized out>
converted = <optimized out>
wanted_format = 3691966320
surface_format = <optimized out>
saved_want_original = <optimized out>
__FUNCTION__ = "canvas_get_image_internal"
#11 0x00007ffff4afc0da in canvas_get_image (canvas=canvas@entry=0x7fffdc0eef70, image=<optimized out>, want_original=want_original@entry=0) at ../spice-common/common/canvas_base.c:1397
No locals.
#12 0x00007ffff4afe42e in canvas_draw_copy (spice_canvas=0x7fffdc0eef70, bbox=0x7fffdc0e9c80, clip=<optimized out>, copy=0x7fffe3bf1320) at ../spice-common/common/canvas_base.c:2370
canvas = 0x7fffdc0eef70
dest_region = {extents = {x1 = 5, y1 = 5, x2 = 161, y2 = 33}, data = 0x0}
surface_canvas = <optimized out>
src_image = <optimized out>
rop = SPICE_ROP_COPY
__FUNCTION__ = "canvas_draw_copy"
#13 0x00007ffff4ad120c in red_draw_qxl_drawable (worker=worker@entry=0x7fffe3218010, drawable=drawable@entry=0x7fffe33d8a58) at red_worker.c:4421
copy = {src_bitmap = 0x7fffdc044e70, src_area = {left = 5, top = 5, right = 161, bottom = 33}, rop_descriptor = 8, scale_mode = 1 '\001', mask = {flags = 194 '\302', pos = {x = -1027423550, y = -1027423550}, bitmap = 0x0}}
img1 = {descriptor = {id = 140736884378864, type = 80 'P', flags = 21 '\025', width = 32767, height = 4294902015}, u = {bitmap = {format = 112 'p', flags = 10 '\n', x = 32767, y = 3865334188, stride = 32767, palette = 0x7fffe66451c4, palette_id = 138783, data = 0x0}, quic = {data_size = 4084402800, data = 0x7fffe66451ac}, surface = {surface_id = 4084402800}, lz_rgb = {data_size = 4084402800, data = 0x7fffe66451ac}, lz_plt = {flags = 112 'p', data_size = 32767, palette = 0x7fffe66451ac, palette_id = 140737058722244, data = 0x21e1f}, jpeg = {data_size = 4084402800, data = 0x7fffe66451ac}, lz4 = {data_size = 4084402800, data = 0x7fffe66451ac}, zlib_glz = {glz_data_size = 4084402800, data_size = 32767, data = 0x7fffe66451ac}, jpeg_alpha = {flags = 112 'p', jpeg_size = 32767, data_size = 3865334188, data = 0x7fffe66451c4}}}
img2 = {descriptor = {id = 140737058722236, type = 196 '\304', flags = 81 'Q', width = 32767, height = 3786207248}, u = {bitmap = {format = 53 '5', flags = 156 '\234', x = 32767, y = 22176, stride = 0, palette = 0x5555566fc920, palette_id = 140737058708356, data = 0x539}, quic = {data_size = 4104887349, data = 0x56a0}, surface = {surface_id = 4104887349}, lz_rgb = {data_size = 4104887349, data = 0x56a0}, lz_plt = {flags = 53 '5', data_size = 32767, palette = 0x56a0, palette_id = 93825010747680, data = 0x7fffe6641b84}, jpeg = {data_size = 4104887349, data = 0x56a0}, lz4 = {data_size = 4104887349, data = 0x56a0}, zlib_glz = {glz_data_size = 4104887349, data_size = 32767, data = 0x56a0}, jpeg_alpha = {flags = 53 '5', jpeg_size = 32767, data_size = 22176, data = 0x5555566fc920}}}
surface = 0x7fffe32182f0
canvas = 0x7fffdc0eef70
clip = {type = 0 '\000', rects = 0x0}
__FUNCTION__ = "red_draw_qxl_drawable"
#14 0x00007ffff4adfad5 in red_draw_drawable (drawable=0x7fffe33d8a58, worker=0x7fffe3218010) at red_worker.c:4534
No locals.
#15 red_update_area (worker=worker@entry=0x7fffe3218010, area=area@entry=0x7fffe3bf1b60, surface_id=surface_id@entry=0) at red_worker.c:4787
container = <optimized out>
surface = 0x7fffe32182f0
ring = 0x7fffe3218308
ring_item = <optimized out>
rgn = {extents = {x1 = 0, y1 = 0, x2 = 1366, y2 = 768}, data = 0x0}
last = 0x7fffe33c9cd8
now = 0x7fffe33d8a58
__FUNCTION__ = "red_update_area"
#16 0x00007ffff4ae9644 in handle_dev_update_async (opaque=0x7fffe3218010, payload=<optimized out>) at red_worker.c:10992
worker = 0x7fffe3218010
msg = <optimized out>
rect = {left = 0, top = 0, right = 1366, bottom = 768}
qxl_dirty_rects = <optimized out>
num_dirty_rects = <optimized out>
surface = <optimized out>
surface_id = 0
qxl_area = {top = 0, left = 0, bottom = 768, right = 1366}
clear_dirty_region = 1
__FUNCTION__ = "handle_dev_update_async"
__func__ = "handle_dev_update_async"
#17 0x00007ffff4ac85d4 in dispatcher_handle_single_read (dispatcher=0x555556415e28) at dispatcher.c:139
ret = <optimized out>
type = <optimized out>
msg = 0x5555563cd330
ack = 4294967295
payload = 0x5555563daf20 "P\177=VUU"
#18 dispatcher_handle_recv_read (dispatcher=0x555556415e28) at dispatcher.c:162
No locals.
#19 0x00007ffff4aebc5c in red_worker_main (arg=<optimized out>) at red_worker.c:12175
events = <optimized out>
i = <optimized out>
num_events = 1
timers_queue_timeout = <optimized out>
worker = 0x7fffe3218010
__FUNCTION__ = "red_worker_main"
#20 0x00007ffff3a47b50 in start_thread (arg=<optimized out>) at pthread_create.c:304
__res = <optimized out>
pd = 0x7fffe3bf2700
unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140737014343424, -7079689987510599981, 140737281073696, 140737014344128, 140737354125376, 3, 7079698237168975571, 7079663285551136467}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
not_first_call = <optimized out>
freesize = <optimized out>
__PRETTY_FUNCTION__ = "start_thread"
#21 0x00007ffff379195d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
No locals.
#22 0x0000000000000000 in ?? ()
No symbol table info available.
Registers:
rax 0x0 0
rbx 0x7ffff3a3ce98 140737280986776
rcx 0xffffffffffffffff -1
rdx 0x6 6
rsi 0x1067 4199
rdi 0x1053 4179
rbp 0x7ffff3a3ce40 0x7ffff3a3ce40
rsp 0x7fffe3bf0e38 0x7fffe3bf0e38
r8 0x7fffe3bf2700 140737014343424
r9 0x656e6769736e7528 7308892947874739496
r10 0x8 8
r11 0x206 518
r12 0x555558ddeba0 93825051519904
r13 0x0 0
r14 0x7f7e5ffe 2138988542
r15 0x4 4
rip 0x7ffff36e8165 0x7ffff36e8165 <*__GI_raise+53>
eflags 0x206 [ PF IF ]
cs 0x33 51
ss 0x2b 43
ds 0x0 0
es 0x0 0
fs 0x0 0
gs 0x0 0
Current instructions:
=> 0x7ffff36e8165 <*__GI_raise+53>: cmp $0xfffffffffffff000,%rax
0x7ffff36e816b <*__GI_raise+59>: ja 0x7ffff36e8182 <*__GI_raise+82>
0x7ffff36e816d <*__GI_raise+61>: repz retq
0x7ffff36e816f <*__GI_raise+63>: nop
0x7ffff36e8170 <*__GI_raise+64>: test %eax,%eax
0x7ffff36e8172 <*__GI_raise+66>: jg 0x7ffff36e8155 <*__GI_raise+37>
0x7ffff36e8174 <*__GI_raise+68>: test $0x7fffffff,%eax
0x7ffff36e8179 <*__GI_raise+73>: jne 0x7ffff36e8192 <*__GI_raise+98>
0x7ffff36e817b <*__GI_raise+75>: mov %esi,%eax
0x7ffff36e817d <*__GI_raise+77>: nopl (%rax)
0x7ffff36e8180 <*__GI_raise+80>: jmp 0x7ffff36e8155 <*__GI_raise+37>
0x7ffff36e8182 <*__GI_raise+82>: mov 0x352c8f(%rip),%rdx # 0x7ffff3a3ae18
0x7ffff36e8189 <*__GI_raise+89>: neg %eax
0x7ffff36e818b <*__GI_raise+91>: mov %eax,%fs:(%rdx)
0x7ffff36e818e <*__GI_raise+94>: or $0xffffffff,%eax
0x7ffff36e8191 <*__GI_raise+97>: retq
Threads backtrace:
Thread 9 (Thread 0x7fffdbfff700 (LWP 4313)):
#0 sem_timedwait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S:106
#1 0x00005555559b38cc in qemu_sem_timedwait (sem=0x5555563dcea8, ms=10000) at util/qemu-thread-posix.c:257
#2 0x0000555555849892 in worker_thread (opaque=0x5555563dce10) at thread-pool.c:97
#3 0x00007ffff3a47b50 in start_thread (arg=<optimized out>) at pthread_create.c:304
#4 0x00007ffff379195d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5 0x0000000000000000 in ?? ()
Thread 8 (Thread 0x7fffe0acb700 (LWP 4312)):
#0 sem_timedwait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S:106
#1 0x00005555559b38cc in qemu_sem_timedwait (sem=0x5555563dcea8, ms=10000) at util/qemu-thread-posix.c:257
#2 0x0000555555849892 in worker_thread (opaque=0x5555563dce10) at thread-pool.c:97
#3 0x00007ffff3a47b50 in start_thread (arg=<optimized out>) at pthread_create.c:304
#4 0x00007ffff379195d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5 0x0000000000000000 in ?? ()
Thread 7 (Thread 0x7fffe3017700 (LWP 4200)):
#0 pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1 0x00005555559b360a in qemu_cond_wait (cond=0x5555564202a0, mutex=0x5555564202d0) at util/qemu-thread-posix.c:135
#2 0x00005555558731d6 in vnc_worker_thread_loop (queue=0x5555564202a0) at ui/vnc-jobs.c:222
#3 0x0000555555873739 in vnc_worker_thread (arg=0x5555564202a0) at ui/vnc-jobs.c:323
#4 0x00007ffff3a47b50 in start_thread (arg=<optimized out>) at pthread_create.c:304
#5 0x00007ffff379195d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6 0x0000000000000000 in ?? ()
Thread 6 (Thread 0x7fffe3bf2700 (LWP 4199)):
#0 0x00007ffff36e8165 in *__GI_raise (sig=<optimized out>) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#1 0x00007ffff36eb3e0 in *__GI_abort () at abort.c:92
#2 0x00007ffff372bdea in __malloc_assert (assertion=<optimized out>, file=<optimized out>, line=<optimized out>, function=<optimized out>) at malloc.c:351
#3 0x00007ffff372ed13 in sYSMALLOc (av=<optimized out>, nb=<optimized out>) at malloc.c:3093
#4 _int_malloc (av=0x7ffff3a3ce40, bytes=<optimized out>) at malloc.c:4776
#5 0x00007ffff3730a70 in *__GI___libc_malloc (bytes=4196352) at malloc.c:3660
#6 0x00007ffff4b1d280 in spice_malloc (n_bytes=4196352) at mem.c:93
#7 0x00007ffff4b1d6ee in spice_chunks_linearize (chunks=0x7fffdc088fa0) at mem.c:226
#8 0x00007ffff4afb4e6 in canvas_bitmap_to_surface (canvas=canvas@entry=0x7fffdc0eef70, bitmap=bitmap@entry=0x7fffdc044e88, palette=0x0, want_original=1) at ../spice-common/common/canvas_base.c:738
#9 0x00007ffff4afb698 in canvas_get_bits (want_original=<optimized out>, bitmap=0x7fffdc044e88, canvas=0x7fffdc0eef70) at ../spice-common/common/canvas_base.c:1067
#10 canvas_get_image_internal (canvas=canvas@entry=0x7fffdc0eef70, image=0x7fffdc044e70, want_original=<optimized out>, want_original@entry=0, real_get=real_get@entry=1) at ../spice-common/common/canvas_base.c:1253
#11 0x00007ffff4afc0da in canvas_get_image (canvas=canvas@entry=0x7fffdc0eef70, image=<optimized out>, want_original=want_original@entry=0) at ../spice-common/common/canvas_base.c:1397
#12 0x00007ffff4afe42e in canvas_draw_copy (spice_canvas=0x7fffdc0eef70, bbox=0x7fffdc0e9c80, clip=<optimized out>, copy=0x7fffe3bf1320) at ../spice-common/common/canvas_base.c:2370
#13 0x00007ffff4ad120c in red_draw_qxl_drawable (worker=worker@entry=0x7fffe3218010, drawable=drawable@entry=0x7fffe33d8a58) at red_worker.c:4421
#14 0x00007ffff4adfad5 in red_draw_drawable (drawable=0x7fffe33d8a58, worker=0x7fffe3218010) at red_worker.c:4534
#15 red_update_area (worker=worker@entry=0x7fffe3218010, area=area@entry=0x7fffe3bf1b60, surface_id=surface_id@entry=0) at red_worker.c:4787
#16 0x00007ffff4ae9644 in handle_dev_update_async (opaque=0x7fffe3218010, payload=<optimized out>) at red_worker.c:10992
#17 0x00007ffff4ac85d4 in dispatcher_handle_single_read (dispatcher=0x555556415e28) at dispatcher.c:139
#18 dispatcher_handle_recv_read (dispatcher=0x555556415e28) at dispatcher.c:162
#19 0x00007ffff4aebc5c in red_worker_main (arg=<optimized out>) at red_worker.c:12175
#20 0x00007ffff3a47b50 in start_thread (arg=<optimized out>) at pthread_create.c:304
#21 0x00007ffff379195d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#22 0x0000000000000000 in ?? ()
Thread 5 (Thread 0x7fffe9621700 (LWP 4198)):
#0 sem_timedwait () at ../nptl/sysdeps/unix/sysv/linux/x86_64/sem_timedwait.S:106
#1 0x00005555559b38cc in qemu_sem_timedwait (sem=0x5555563dcea8, ms=10000) at util/qemu-thread-posix.c:257
#2 0x0000555555849892 in worker_thread (opaque=0x5555563dce10) at thread-pool.c:97
#3 0x00007ffff3a47b50 in start_thread (arg=<optimized out>) at pthread_create.c:304
#4 0x00007ffff379195d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5 0x0000000000000000 in ?? ()
Thread 4 (Thread 0x7fffe9f23700 (LWP 4197)):
#0 do_sigwait (set=0x7fffe9f22c50, sig=0x7fffe9f22c40) at ../nptl/sysdeps/unix/sysv/linux/../../../../../sysdeps/unix/sysv/linux/sigwait.c:65
#1 0x00007ffff3a4fe67 in __sigwait (set=<optimized out>, sig=<optimized out>) at ../nptl/sysdeps/unix/sysv/linux/../../../../../sysdeps/unix/sysv/linux/sigwait.c:100
#2 0x0000555555893e0a in qemu_dummy_cpu_thread_fn (arg=0x55555636fa30) at /mnt/raid-vm/RW/source/xen/Xen-stable/tools/qemu-xen-dir/cpus.c:911
#3 0x00007ffff3a47b50 in start_thread (arg=<optimized out>) at pthread_create.c:304
#4 0x00007ffff379195d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5 0x0000000000000000 in ?? ()
Thread 3 (Thread 0x7fffea724700 (LWP 4196)):
#0 do_sigwait (set=0x7fffea723c50, sig=0x7fffea723c40) at ../nptl/sysdeps/unix/sysv/linux/../../../../../sysdeps/unix/sysv/linux/sigwait.c:65
#1 0x00007ffff3a4fe67 in __sigwait (set=<optimized out>, sig=<optimized out>) at ../nptl/sysdeps/unix/sysv/linux/../../../../../sysdeps/unix/sysv/linux/sigwait.c:100
#2 0x0000555555893e0a in qemu_dummy_cpu_thread_fn (arg=0x55555635ecf0) at /mnt/raid-vm/RW/source/xen/Xen-stable/tools/qemu-xen-dir/cpus.c:911
#3 0x00007ffff3a47b50 in start_thread (arg=<optimized out>) at pthread_create.c:304
#4 0x00007ffff379195d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5 0x0000000000000000 in ?? ()
Thread 2 (Thread 0x7ffff7ff1700 (LWP 4184)):
#0 0x00007ffff3a4f1fd in read () at ../sysdeps/unix/syscall-template.S:82
#1 0x00007ffff5229626 in read_all (fd=26, data=0x7fffdc096cc0, data@entry=0x20, len=len@entry=16, nonblocking=nonblocking@entry=0) at xs.c:378
#2 0x00007ffff5229743 in read_message (h=h@entry=0x55555632ee90, nonblocking=nonblocking@entry=0) at xs.c:1150
#3 0x00007ffff522a05e in read_thread (arg=0x55555632ee90) at xs.c:1222
#4 0x00007ffff3a47b50 in start_thread (arg=<optimized out>) at pthread_create.c:304
#5 0x00007ffff379195d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6 0x0000000000000000 in ?? ()
Thread 1 (Thread 0x7ffff7ef6900 (LWP 4179)):
#0 0x00007ffff3786de1 in ppoll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>, sigmask=<optimized out>) at ../sysdeps/unix/sysv/linux/ppoll.c:58
#1 0x0000555555822f96 in qemu_poll_ns (fds=0x5555566fbe00, nfds=19, timeout=63041) at qemu-timer.c:316
#2 0x00005555557d74b0 in os_host_main_loop_wait (timeout=63041) at main-loop.c:229
#3 0x00005555557d7599 in main_loop_wait (nonblocking=0) at main-loop.c:484
#4 0x00005555558830a4 in main_loop () at vl.c:2056
#5 0x000055555588ab5f in main (argc=68, argv=0x7fffffffdf98, envp=0x7fffffffe1c0) at vl.c:4535
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