Hi again,
got a Segfault today without virtio :-( (one IDE Disk and one virtio-scsi)
Core was generated by `/usr/libexec/qemu-kvm -name vmname -S -machine
pc-i440fx-rhel7.2.0,accel='.
Program terminated with signal 11, Segmentation fault.
#0 0x00007fb299cbd3ab in
tcmalloc::ThreadCache::ReleaseToCentralCache(tcmalloc::ThreadCache::FreeList*,
unsigned long, int) () from /lib64/libtcmalloc.so.4
Thread 6 (Thread 0x7fb28d0c5700 (LWP 29423)):
#0 0x00007fb29cc85ac3 in pread64 () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1 0x00007fb29e37c2a3 in pread (__offset=<optimized out>, __nbytes=<optimized
out>, __buf=0x7fb2a3e21a00, __fd=<optimized out>) at
/usr/include/bits/unistd.h:99
No locals.
#2 handle_aiocb_rw_linear (aiocb=aiocb@entry=0x7fb2a1474340,
buf=buf@entry=0x7fb2a3e21a00 "QF", <incomplete sequence \373>) at
block/raw-posix.c:909
offset = 0
len = <optimized out>
#3 0x00007fb29e37c3d1 in handle_aiocb_rw (aiocb=0x7fb2a1474340) at
block/raw-posix.c:992
nbytes = <optimized out>
buf = 0x7fb2a3e21a00 "QF", <incomplete sequence \373>
__PRETTY_FUNCTION__ = "handle_aiocb_rw"
#4 0x00007fb29e37d945 in aio_worker (arg=0x7fb2a1474340) at
block/raw-posix.c:1204
aiocb = 0x7fb2a1474340
ret = 0
#5 0x00007fb29e33d91b in worker_thread (opaque=0x7fb2a148d450) at
thread-pool.c:105
req = 0x7fb2a1474b30
ret = <optimized out>
pool = 0x7fb2a148d450
#6 0x00007fb29cc7edf5 in start_thread (arg=0x7fb28d0c5700) at
pthread_create.c:308
__res = <optimized out>
pd = 0x7fb28d0c5700
now = <optimized out>
unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140404847302400,
-4522449750849005939, 0, 140404847303104, 140404847302400, 26,
4492373549408278157, 4492409237274449549}, mask_was_saved = 0}}, priv = {pad =
{0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
not_first_call = <optimized out>
pagesize_m1 = <optimized out>
sp = <optimized out>
freesize = <optimized out>
#7 0x00007fb29688c1ad in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
No locals.
Thread 5 (Thread 0x7fb104fff700 (LWP 29084)):
#0 0x00007fb296881b7d in poll () at ../sysdeps/unix/syscall-template.S:81
No locals.
#1 0x00007fb2977d6fe7 in red_worker_main () from /lib64/libspice-server.so.1
No symbol table info available.
#2 0x00007fb29cc7edf5 in start_thread (arg=0x7fb104fff700) at
pthread_create.c:308
__res = <optimized out>
pd = 0x7fb104fff700
now = <optimized out>
unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140398269822720,
-4522449750849005939, 0, 140398269823424, 140398269822720, 140405245697216,
4494326442046740109, 4492409237274449549}, mask_was_saved = 0}}, priv = {pad =
{0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
not_first_call = <optimized out>
pagesize_m1 = <optimized out>
sp = <optimized out>
freesize = <optimized out>
#3 0x00007fb29688c1ad in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
No locals.
Thread 4 (Thread 0x7fb28c8c4700 (LWP 29081)):
#0 pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
No locals.
#1 0x00007fb29e3b9f79 in qemu_cond_wait (cond=<optimized out>,
mutex=mutex@entry=0x7fb29e866d40 <qemu_global_mutex>) at
util/qemu-thread-posix.c:132
err = <optimized out>
__func__ = "qemu_cond_wait"
#2 0x00007fb29e172d3b in qemu_kvm_wait_io_event (cpu=<optimized out>) at
/usr/src/debug/qemu-2.3.0/cpus.c:912
No locals.
#3 qemu_kvm_cpu_thread_fn (arg=0x7fb2a3d2e000) at
/usr/src/debug/qemu-2.3.0/cpus.c:949
cpu = 0x7fb2a3d2e000
r = <optimized out>
#4 0x00007fb29cc7edf5 in start_thread (arg=0x7fb28c8c4700) at
pthread_create.c:308
__res = <optimized out>
pd = 0x7fb28c8c4700
now = <optimized out>
unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140404838909696,
-4522449750849005939, 0, 140404838910400, 140404838909696, 140735272359936,
4492374652678002317, 4492409237274449549}, mask_was_saved = 0}}, priv = {pad =
{0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
not_first_call = <optimized out>
pagesize_m1 = <optimized out>
sp = <optimized out>
freesize = <optimized out>
#5 0x00007fb29688c1ad in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
No locals.
Thread 3 (Thread 0x7fb28c0c3700 (LWP 29082)):
#0 pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
No locals.
#1 0x00007fb29e3b9f79 in qemu_cond_wait (cond=<optimized out>,
mutex=mutex@entry=0x7fb29e866d40 <qemu_global_mutex>) at
util/qemu-thread-posix.c:132
err = <optimized out>
__func__ = "qemu_cond_wait"
#2 0x00007fb29e172d3b in qemu_kvm_wait_io_event (cpu=<optimized out>) at
/usr/src/debug/qemu-2.3.0/cpus.c:912
No locals.
#3 qemu_kvm_cpu_thread_fn (arg=0x7fb2a3d7e000) at
/usr/src/debug/qemu-2.3.0/cpus.c:949
cpu = 0x7fb2a3d7e000
r = <optimized out>
#4 0x00007fb29cc7edf5 in start_thread (arg=0x7fb28c0c3700) at
pthread_create.c:308
__res = <optimized out>
pd = 0x7fb28c0c3700
now = <optimized out>
unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140404830516992,
-4522449750849005939, 0, 140404830517696, 140404830516992, 140735272359936,
4492375751652759181, 4492409237274449549}, mask_was_saved = 0}}, priv = {pad =
{0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
not_first_call = <optimized out>
pagesize_m1 = <optimized out>
sp = <optimized out>
freesize = <optimized out>
#5 0x00007fb29688c1ad in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
No locals.
Thread 2 (Thread 0x7fb28e6ad700 (LWP 29077)):
#0 syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
No locals.
#1 0x00007fb29e3ba272 in futex_wait (val=4294967295, ev=0x7fb29ec84f44
<rcu_call_ready_event>) at util/qemu-thread-posix.c:301
No locals.
#2 qemu_event_wait (ev=ev@entry=0x7fb29ec84f44 <rcu_call_ready_event>) at
util/qemu-thread-posix.c:399
value = <optimized out>
#3 0x00007fb29e3c8526 in call_rcu_thread (opaque=<optimized out>) at
util/rcu.c:233
tries = 0
n = <optimized out>
node = <optimized out>
#4 0x00007fb29cc7edf5 in start_thread (arg=0x7fb28e6ad700) at
pthread_create.c:308
__res = <optimized out>
pd = 0x7fb28e6ad700
now = <optimized out>
unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140404870272768,
-4522449750849005939, 0, 140404870273472, 140404870272768, 140405136150080,
4492370572995942029, 4492409237274449549}, mask_was_saved = 0}}, priv = {pad =
{0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
not_first_call = <optimized out>
pagesize_m1 = <optimized out>
sp = <optimized out>
freesize = <optimized out>
#5 0x00007fb29688c1ad in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:113
No locals.
Thread 1 (Thread 0x7fb29e07cc00 (LWP 29076)):
#0 0x00007fb299cbd3ab in
tcmalloc::ThreadCache::ReleaseToCentralCache(tcmalloc::ThreadCache::FreeList*,
unsigned long, int) () from /lib64/libtcmalloc.so.4
No symbol table info available.
#1 0x00007fb299cbd47b in
tcmalloc::ThreadCache::ListTooLong(tcmalloc::ThreadCache::FreeList*, unsigned
long) () from /lib64/libtcmalloc.so.4
No symbol table info available.
#2 0x00007fb299ccc070 in tc_free () from /lib64/libtcmalloc.so.4
No symbol table info available.
#3 0x00007fb29c58d58f in g_free () from /lib64/libglib-2.0.so.0
No symbol table info available.
#4 0x00007fb29e3b7721 in parser_context_free (ctxt=0x7fb2a531e0c0) at
qobject/json-parser.c:358
i = <optimized out>
#5 json_parser_parse_err (tokens=<optimized out>, ap=ap@entry=0x0,
errp=errp@entry=0x0) at qobject/json-parser.c:710
result = 0x7fb2a4bdf600
#6 0x00007fb29e3b7767 in json_parser_parse (tokens=<optimized out>,
ap=ap@entry=0x0) at qobject/json-parser.c:694
No locals.
#7 0x00007fb29e176e04 in handle_qmp_command (parser=<optimized out>,
tokens=<optimized out>) at /usr/src/debug/qemu-2.3.0/monitor.c:5068
err = <optimized out>
obj = <optimized out>
input = 0x0
args = 0x0
cmd_name = <optimized out>
mon = 0x7fb2a153e140
#8 0x00007fb29e3b64f2 in json_message_process_token (lexer=0x7fb2a1460040,
token=0x7fb2a1424880, type=JSON_OPERATOR, x=49, y=104) at
qobject/json-streamer.c:87
parser = 0x7fb2a1460038
dict = 0x7fb2a3e27200
#9 0x00007fb29e3c891f in json_lexer_feed_char
(lexer=lexer@entry=0x7fb2a1460040, ch=<optimized out>, flush=flush@entry=false)
at qobject/json-lexer.c:303
new_state = 100
#10 0x00007fb29e3c89ee in json_lexer_feed (lexer=0x7fb2a1460040,
buffer=<optimized out>, size=<optimized out>) at qobject/json-lexer.c:356
err = <optimized out>
i = <optimized out>
#11 0x00007fb29e3b6689 in json_message_parser_feed (parser=<optimized out>,
buffer=<optimized out>, size=<optimized out>) at qobject/json-streamer.c:110
No locals.
#12 0x00007fb29e1758cf in monitor_control_read (opaque=<optimized out>,
buf=<optimized out>, size=<optimized out>) at
/usr/src/debug/qemu-2.3.0/monitor.c:5134
old_mon = 0x0
#13 0x00007fb29e2321b0 in qemu_chr_be_write (len=<optimized out>,
buf=0x7fff7bea8a30 "}\212\352{\377\177", s=0x7fb2a14442e0) at qemu-char.c:305
No locals.
#14 tcp_chr_read (chan=<optimized out>, cond=<optimized out>,
opaque=0x7fb2a14442e0) at qemu-char.c:2870
chr = 0x7fb2a14442e0
s = 0x7fb2a14363f0
buf =
"}\212\352{\377\177\000\000\360`;\236\262\177\000\000\030\003\000\000\000\000\000\000\205N;\236\262\177\000\000\240LB\241\262\177\000\000\263E;\236\262\177\000\000\240LB\241\262\177",
'\000' <repeats 18 times>,
"\360\017c\244\262\177\000\000\300\213\352{\377\177\000\000\000\000\000\000\000\000\000\000\060\356t\245\262\177\000\000\000$ᤲ\177\000\000@\232\352{\377\177\000\000H\022\212\226\262\177\000\000]\000\000\000\000\000\000\000\060\000\000\000\060\000\000\000\220\213\352{\377\177\000\000Њ\352{\377\177\000\000\r\000\000\000\000\000\000\000\340\234\177\000\000\000d\023\245\262\177\000\000`\376\061\245\262\177\000\000Q\000\000\000\000\000\000\000\325b\004\000\000\000\000\000"...
len = <optimized out>
size = <optimized out>
#15 0x00007fb29c58799a in g_main_context_dispatch () from
/lib64/libglib-2.0.so.0
No symbol table info available.
#16 0x00007fb29e34b288 in glib_pollfds_poll () at main-loop.c:209
context = 0x7fb2a1491140
pfds = <optimized out>
#17 os_host_main_loop_wait (timeout=<optimized out>) at main-loop.c:254
ret = 2
spin_counter = 0
#18 main_loop_wait (nonblocking=<optimized out>) at main-loop.c:503
ret = 2
timeout = 4294967295
timeout_ns = <optimized out>
#19 0x00007fb29e14aa4e in main_loop () at vl.c:1818
nonblocking = <optimized out>
last_io = 2
#20 main (argc=<optimized out>, argv=<optimized out>, envp=<optimized out>) at
vl.c:4394
i = <optimized out>
snapshot = <optimized out>
linux_boot = <optimized out>
initrd_filename = <optimized out>
kernel_filename = <optimized out>
kernel_cmdline = <optimized out>
boot_order = 0x7fb29e3dda67 "cad"
boot_once = 0x0
cyls = <optimized out>
heads = <optimized out>
secs = <optimized out>
translation = <optimized out>
hda_opts = <optimized out>
opts = <optimized out>
machine_opts = <optimized out>
icount_opts = <optimized out>
olist = <optimized out>
optind = 78
optarg = 0x7fb2a14ef8c0 "pc-i440fx-rhel7.2.0"
loadvm = <optimized out>
machine_class = <optimized out>
cpu_model = <optimized out>
vga_model = 0x0
qtest_chrdev = <optimized out>
qtest_log = <optimized out>
pid_file = <optimized out>
incoming = <optimized out>
show_vnc_port = <optimized out>
defconfig = <optimized out>
userconfig = 111
log_mask = <optimized out>
log_file = <optimized out>
mem_trace = {malloc = 0x7fb29e238480 <malloc_and_trace>, realloc =
0x7fb29e238460 <realloc_and_trace>, free = 0x7fb29e238450 <free_and_trace>,
calloc = 0x0, try_malloc = 0x0, try_realloc = 0x0}
trace_events = <optimized out>
trace_file = <optimized out>
maxram_size = <optimized out>
ram_slots = <optimized out>
vmstate_dump_file = <optimized out>
main_loop_err = 0x0
__func__ = "main"
-----Ursprüngliche Nachricht-----
Von: Paolo Bonzini [mailto:paolo.bonz...@gmail.com] Im Auftrag von Paolo Bonzini
Gesendet: Donnerstag, 19. November 2015 18:02
An: Grundmann, Christian <christian.grundm...@fabasoft.com>; 'Dr. David Alan
Gilbert' <dgilb...@redhat.com>
Cc: 'qemu-devel@nongnu.org' <qemu-devel@nongnu.org>; stefa...@redhat.com
Betreff: Re: WG: [ovirt-users] Segmentation fault in libtcmalloc
On 19/11/2015 17:00, Grundmann, Christian wrote:
> Hi, it seems that using virtio-scsi did the trick, But now the VMs are
> pausing without an coredump, so the underlying Problem (no storage
> Error) is not fixed, As I am using Snapshots (and so the disks have to
> grow very fast) I try if tuning "volume_utilization_percent" and
> "volume_utilization_chunk_mb" will help
> (https://access.redhat.com/solutions/130843)
The fix for virtio-blk is probably this patch:
http://article.gmane.org/gmane.comp.emulators.qemu.block/6380/raw
Paolo
