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[Qemu-devel] [Bug 1727259] Re: qemu-io-test 58 segfaults when configured
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From: |
R.Nageswara Sastry |
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Subject: |
[Qemu-devel] [Bug 1727259] Re: qemu-io-test 58 segfaults when configured with gcov |
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Date: |
Wed, 25 Oct 2017 09:39:09 -0000 |
from demsg:
[84831.506917] qemu-io[35971]: unhandled signal 11 at 0000000000000004 nip
00007fffae20f7d4 lr 00000000102d3ec8 code 30001
[84831.519551] qemu-io[35977]: unhandled signal 11 at 0000000000000004 nip
00007fff9925f7d4 lr 00000000102d3ec8 code 30001
[84831.634000] qemu-io[35990]: unhandled signal 11 at 0000000000000004 nip
00007fff86b4f7d4 lr 00000000102d3ec8 code 30001
[84831.646318] qemu-io[35997]: unhandled signal 11 at 0000000000000004 nip
00007fffa165f7d4 lr 00000000102d3ec8 code 30001
from gdb:
(gdb) bt
#0 0x00007fff8c75f7d4 in __strcmp_power9 () from /lib64/libc.so.6
#1 0x00000000102d3ec8 in find_desc_by_name (desc=0x1036d6f0, name=0x28e46670
"server.path") at util/qemu-option.c:166
#2 0x00000000102d93e0 in qemu_opts_absorb_qdict (opts=0x28e47a80,
qdict=0x28e469a0, errp=0x7fffec247c98) at util/qemu-option.c:1026
#3 0x000000001012a2e4 in nbd_open (bs=0x28e42290, options=0x28e469a0,
flags=24578, errp=0x7fffec247d80) at block/nbd.c:406
#4 0x00000000100144e8 in bdrv_open_driver (bs=0x28e42290, drv=0x1036e070
<bdrv_nbd_unix>, node_name=0x0, options=0x28e469a0, open_flags=24578,
errp=0x7fffec247f50) at block.c:1135
#5 0x0000000010015b04 in bdrv_open_common (bs=0x28e42290, file=0x0,
options=0x28e469a0, errp=0x7fffec247f50) at block.c:1395
#6 0x000000001001bee8 in bdrv_open_inherit (filename=0x7fffec24f2c2
"nbd:unix:/home/nasastry/qemu_gcov/tests/qemu-iotests/scratch/test_qemu_nbd_socket",
reference=0x0, options=0x28e469a0, flags=57346, parent=0x28e3bf90,
child_role=0x102fa980 <child_file>, errp=0x7fffec248150) at block.c:2615
#7 0x000000001001a620 in bdrv_open_child_bs (filename=0x7fffec24f2c2
"nbd:unix:/home/nasastry/qemu_gcov/tests/qemu-iotests/scratch/test_qemu_nbd_socket",
options=0x28e40250, bdref_key=0x102fb618 "file", parent=0x28e3bf90,
child_role=0x102fa980 <child_file>, allow_none=true, errp=0x7fffec248150)
at block.c:2314
#8 0x000000001001b9c0 in bdrv_open_inherit (filename=0x7fffec24f2c2
"nbd:unix:/home/nasastry/qemu_gcov/tests/qemu-iotests/scratch/test_qemu_nbd_socket",
reference=0x0, options=0x28e40250, flags=24578, parent=0x0,
child_role=0x0, errp=0x7fffec248310) at block.c:2566
#9 0x000000001001c70c in bdrv_open (filename=0x7fffec24f2c2
"nbd:unix:/home/nasastry/qemu_gcov/tests/qemu-iotests/scratch/test_qemu_nbd_socket",
reference=0x0, options=0x28e3af70, flags=16386, errp=0x7fffec248310)
at block.c:2697
#10 0x00000000100e7664 in blk_new_open (filename=0x7fffec24f2c2
"nbd:unix:/home/nasastry/qemu_gcov/tests/qemu-iotests/scratch/test_qemu_nbd_socket",
reference=0x0, options=0x28e3af70, flags=16386, errp=0x7fffec248310)
at block/block-backend.c:321
#11 0x000000001000b57c in openfile (name=0x7fffec24f2c2
"nbd:unix:/home/nasastry/qemu_gcov/tests/qemu-iotests/scratch/test_qemu_nbd_socket",
flags=16386, writethrough=false, force_share=false, opts=0x28e3af70) at
qemu-io.c:81
#12 0x000000001000e388 in main (argc=11, argv=0x7fffec248a38) at qemu-io.c:624
(gdb) bt full
#0 0x00007fff8c75f7d4 in __strcmp_power9 () from /lib64/libc.so.6
No symbol table info available.
#1 0x00000000102d3ec8 in find_desc_by_name (desc=0x1036d6f0, name=0x28e46670
"server.path") at util/qemu-option.c:166
i = 7
#2 0x00000000102d93e0 in qemu_opts_absorb_qdict (opts=0x28e47a80,
qdict=0x28e469a0, errp=0x7fffec247c98) at util/qemu-option.c:1026
local_err = 0x0
state = {opts = 0x28e47a80, errp = 0x7fffec247bd0}
entry = 0x28e46640
next = 0x28e479e0
#3 0x000000001012a2e4 in nbd_open (bs=0x28e42290, options=0x28e469a0,
flags=24578, errp=0x7fffec247d80) at block/nbd.c:406
s = 0x28e48740
opts = 0x28e47a80
local_err = 0x0
sioc = 0x0
tlscreds = 0x0
hostname = 0x0
ret = -22
__func__ = "nbd_open"
#4 0x00000000100144e8 in bdrv_open_driver (bs=0x28e42290, drv=0x1036e070
<bdrv_nbd_unix>, node_name=0x0, options=0x28e469a0, open_flags=24578,
errp=0x7fffec247f50) at block.c:1135
local_err = 0x0
ret = 0
__PRETTY_FUNCTION__ = "bdrv_open_driver"
__func__ = "bdrv_open_driver"
#5 0x0000000010015b04 in bdrv_open_common (bs=0x28e42290, file=0x0,
options=0x28e469a0, errp=0x7fffec247f50) at block.c:1395
ret = 0
open_flags = 24578
filename = 0x0
driver_name = 0x28e47c00 "nbd"
node_name = 0x0
discard = 0x28e47ce0 "unmap"
detect_zeroes = 0x0
opts = 0x28e47ad0
drv = 0x1036e070 <bdrv_nbd_unix>
local_err = 0x0
__PRETTY_FUNCTION__ = "bdrv_open_common"
__func__ = "bdrv_open_common"
#6 0x000000001001bee8 in bdrv_open_inherit (filename=0x7fffec24f2c2
"nbd:unix:/home/nasastry/qemu_gcov/tests/qemu-iotests/scratch/test_qemu_nbd_socket",
reference=0x0, options=0x28e469a0, flags=57346, parent=0x28e3bf90,
child_role=0x102fa980 <child_file>, errp=0x7fffec248150) at block.c:2615
ret = 0
file = 0x0
bs = 0x28e42290
drv = 0x1036e070 <bdrv_nbd_unix>
drvname = 0x28e46750 "nbd"
backing = 0x0
local_err = 0x0
snapshot_options = 0x0
snapshot_flags = 0
__PRETTY_FUNCTION__ = "bdrv_open_inherit"
__func__ = "bdrv_open_inherit"
#7 0x000000001001a620 in bdrv_open_child_bs (filename=0x7fffec24f2c2
"nbd:unix:/home/nasastry/qemu_gcov/tests/qemu-iotests/scratch/test_qemu_nbd_socket",
options=0x28e40250, bdref_key=0x102fb618 "file", parent=0x28e3bf90,
child_role=0x102fa980 <child_file>, allow_none=true, errp=0x7fffec248150)
at block.c:2314
bs = 0x0
image_options = 0x28e41270
bdref_key_dot = 0x28e29a60 ""
reference = 0x0
__PRETTY_FUNCTION__ = "bdrv_open_child_bs"
__func__ = "bdrv_open_child_bs"
#8 0x000000001001b9c0 in bdrv_open_inherit (filename=0x7fffec24f2c2
"nbd:unix:/home/nasastry/qemu_gcov/tests/qemu-iotests/scratch/test_qemu_nbd_socket",
reference=0x0, options=0x28e40250, flags=24578, parent=0x0,
child_role=0x0, errp=0x7fffec248310) at block.c:2566
file_bs = 0x7fffec2481c0
ret = 0
file = 0x0
bs = 0x28e3bf90
drv = 0x10354b40 <bdrv_raw>
drvname = 0x28e29440 "raw"
backing = 0x0
local_err = 0x0
snapshot_options = 0x0
---Type <return> to continue, or q <return> to quit---
snapshot_flags = 0
__PRETTY_FUNCTION__ = "bdrv_open_inherit"
__func__ = "bdrv_open_inherit"
#9 0x000000001001c70c in bdrv_open (filename=0x7fffec24f2c2
"nbd:unix:/home/nasastry/qemu_gcov/tests/qemu-iotests/scratch/test_qemu_nbd_socket",
reference=0x0, options=0x28e3af70, flags=16386, errp=0x7fffec248310)
at block.c:2697
No locals.
#10 0x00000000100e7664 in blk_new_open (filename=0x7fffec24f2c2
"nbd:unix:/home/nasastry/qemu_gcov/tests/qemu-iotests/scratch/test_qemu_nbd_socket",
reference=0x0, options=0x28e3af70, flags=16386, errp=0x7fffec248310)
at block/block-backend.c:321
blk = 0x28e294b0
bs = 0x7fffec248280
perm = 3
#11 0x000000001000b57c in openfile (name=0x7fffec24f2c2
"nbd:unix:/home/nasastry/qemu_gcov/tests/qemu-iotests/scratch/test_qemu_nbd_socket",
flags=16386, writethrough=false, force_share=false, opts=0x28e3af70) at
qemu-io.c:81
local_err = 0x0
#12 0x000000001000e388 in main (argc=11, argv=0x7fffec248a38) at qemu-io.c:624
readonly = 0
sopt = 0x102fa128 "hVc:d:f:rsnCmkt:T:U"
lopt = {{name = 0x102fa1f8 "help", has_arg = 0, flag = 0x0, val = 104},
{name = 0x102fa200 "version", has_arg = 0, flag = 0x0, val = 86}, {name =
0x102fa208 "cmd", has_arg = 1, flag = 0x0, val = 99}, {
name = 0x102fa210 "format", has_arg = 1, flag = 0x0, val = 102},
{name = 0x102fa218 "read-only", has_arg = 0, flag = 0x0, val = 114}, {name =
0x102fa228 "snapshot", has_arg = 0, flag = 0x0, val = 115}, {
name = 0x102fa238 "nocache", has_arg = 0, flag = 0x0, val = 110},
{name = 0x102fa240 "copy-on-read", has_arg = 0, flag = 0x0, val = 67}, {name =
0x102fa250 "misalign", has_arg = 0, flag = 0x0, val = 109}, {
name = 0x102fa260 "native-aio", has_arg = 0, flag = 0x0, val =
107}, {name = 0x102fa270 "discard", has_arg = 1, flag = 0x0, val = 100}, {name
= 0x102fa278 "cache", has_arg = 1, flag = 0x0, val = 116}, {
name = 0x102fa280 "trace", has_arg = 1, flag = 0x0, val = 84},
{name = 0x102fa108 "object", has_arg = 1, flag = 0x0, val = 256}, {name =
0x102fa288 "image-opts", has_arg = 0, flag = 0x0, val = 257}, {
name = 0x102f9768 "force-share", has_arg = 0, flag = 0x0, val =
85}, {name = 0x0, has_arg = 0, flag = 0x0, val = 0}}
c = -1
opt_index = 11
flags = 16386
writethrough = false
local_error = 0x0
opts = 0x28e3af70
format = 0x7fffec24f28f "raw"
trace_file = 0x0
force_share = false
--
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https://bugs.launchpad.net/bugs/1727259
Title:
qemu-io-test 58 segfaults when configured with gcov
Status in QEMU:
New
Bug description:
Head is at 3d7196d43bfe12efe98568cb60057e273652b99b
Steps to re-produce:
1. git clone
./configure --enable-gcov --target-list=ppc64-softmmu
make
cd tests/qemu-iotests
2. export qemu binary, in my environment
export QEMU_PROG=/home/nasastry/qemu_gcov/ppc64-softmmu/qemu-system-ppc64
3. Run test 58 with format qcow2
./check -qcow2 58
QEMU -- "/home/nasastry/qemu_gcov/ppc64-softmmu/qemu-system-ppc64"
-nodefaults -machine accel=qtest
QEMU_IMG -- "/home/nasastry/qemu_gcov/qemu-img"
QEMU_IO -- "/home/nasastry/qemu_gcov/qemu-io" --cache writeback -f
qcow2
QEMU_NBD -- "/home/nasastry/qemu_gcov/qemu-nbd"
IMGFMT -- qcow2 (compat=1.1)
IMGPROTO -- file
PLATFORM -- Linux/ppc64le zzfp365-lp1
4.13.0-4.rel.git49564cb.el7.centos.ppc64le
TEST_DIR -- /home/nasastry/qemu_gcov/tests/qemu-iotests/scratch
SOCKET_SCM_HELPER --
/home/nasastry/qemu_gcov/tests/qemu-iotests/socket_scm_helper
058 1s ... - output mismatch (see 058.out.bad)
--- /home/nasastry/qemu_gcov/tests/qemu-iotests/058.out 2017-10-09
14:09:04.262726912 +0530
+++ /home/nasastry/qemu_gcov/tests/qemu-iotests/058.out.bad 2017-10-25
15:00:52.037515025 +0530
@@ -19,16 +19,28 @@
4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
== verifying the exported snapshot with patterns, method 1 ==
-read 4096/4096 bytes at offset 4096
-4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-read 4096/4096 bytes at offset 8192
-4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+./common.rc: line 66: 36255 Segmentation fault (core dumped) ( if [
"${VALGRIND_QEMU}" == "y" ]; then
+ exec valgrind --log-file="${VALGRIND_LOGFILE}" --error-exitcode=99
"$QEMU_IO_PROG" $QEMU_IO_ARGS "$@";
+else
+ exec "$QEMU_IO_PROG" $QEMU_IO_ARGS "$@";
+fi )
+./common.rc: line 66: 36262 Segmentation fault (core dumped) ( if [
"${VALGRIND_QEMU}" == "y" ]; then
+ exec valgrind --log-file="${VALGRIND_LOGFILE}" --error-exitcode=99
"$QEMU_IO_PROG" $QEMU_IO_ARGS "$@";
+else
+ exec "$QEMU_IO_PROG" $QEMU_IO_ARGS "$@";
+fi )
== verifying the exported snapshot with patterns, method 2 ==
-read 4096/4096 bytes at offset 4096
-4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
-read 4096/4096 bytes at offset 8192
-4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
+./common.rc: line 66: 36274 Segmentation fault (core dumped) ( if [
"${VALGRIND_QEMU}" == "y" ]; then
+ exec valgrind --log-file="${VALGRIND_LOGFILE}" --error-exitcode=99
"$QEMU_IO_PROG" $QEMU_IO_ARGS "$@";
+else
+ exec "$QEMU_IO_PROG" $QEMU_IO_ARGS "$@";
+fi )
+./common.rc: line 66: 36282 Segmentation fault (core dumped) ( if [
"${VALGRIND_QEMU}" == "y" ]; then
+ exec valgrind --log-file="${VALGRIND_LOGFILE}" --error-exitcode=99
"$QEMU_IO_PROG" $QEMU_IO_ARGS "$@";
+else
+ exec "$QEMU_IO_PROG" $QEMU_IO_ARGS "$@";
+fi )
== verifying the converted snapshot with patterns, method 1 ==
read 4096/4096 bytes at offset 4096
Failures: 058
Failed 1 of 1 tests
with out gcov configured this test case is pass.
# ./check -qcow2 58
QEMU -- "/home/nasastry/qemu/ppc64-softmmu/qemu-system-ppc64"
-nodefaults -machine accel=qtest
QEMU_IMG -- "/home/nasastry/qemu/qemu-img"
QEMU_IO -- "/home/nasastry/qemu/qemu-io" --cache writeback -f qcow2
QEMU_NBD -- "/home/nasastry/qemu/qemu-nbd"
IMGFMT -- qcow2 (compat=1.1)
IMGPROTO -- file
PLATFORM -- Linux/ppc64le zzfp365-lp1
4.13.0-4.rel.git49564cb.el7.centos.ppc64le
TEST_DIR -- /home/nasastry/qemu/tests/qemu-iotests/scratch
SOCKET_SCM_HELPER -- /home/nasastry/qemu/tests/qemu-iotests/socket_scm_helper
058 0s ...
Passed all 1 tests
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