I reproduced the following crash fast enough:
0 raise () at /lib64/libc.so.6
1 abort () at /lib64/libc.so.6
2 _nl_load_domain.cold () at /lib64/libc.so.6
3 annobin_assert.c_end () at /lib64/libc.so.6
4 bdrv_reopen_multiple (bs_queue=0x55de75fa9b70, errp=0x0)
at ../block.c:3820
5 bdrv_reopen_set_read_only (bs=0x55de760fc020, read_only=true,
errp=0x0) at ../block.c:3870
6 stream_clean (job=0x55de75fa9410) at ../block/stream.c:99
7 job_clean (job=0x55de75fa9410) at ../job.c:680
8 job_finalize_single (job=0x55de75fa9410) at ../job.c:696
9 job_txn_apply (job=0x55de75fa9410,
fn=0x55de741eee27 <job_finalize_single>) at ../job.c:158
10 job_do_finalize (job=0x55de75fa9410) at ../job.c:805
11 job_completed_txn_success (job=0x55de75fa9410) at ../job.c:855
12 job_completed (job=0x55de75fa9410) at ../job.c:868
13 job_exit (opaque=0x55de75fa9410) at ../job.c:888
14 aio_bh_call (bh=0x55de76b9b4e0) at ../util/async.c:136
15 aio_bh_poll (ctx=0x55de75bc5300) at ../util/async.c:164
16 aio_dispatch (ctx=0x55de75bc5300) at ../util/aio-posix.c:381
17 aio_ctx_dispatch (source=0x55de75bc5300, callback=0x0,
user_data=0x0) at ../util/async.c:306
18 g_main_context_dispatch () at /lib64/libglib-2.0.so.0
19 glib_pollfds_poll () at ../util/main-loop.c:232
20 os_host_main_loop_wait (timeout=0) at ../util/main-loop.c:255
21 main_loop_wait (nonblocking=0) at ../util/main-loop.c:531
22 qemu_main_loop () at ../softmmu/runstate.c:722
23 main (argc=20, argv=0x7ffe218f0268, envp=0x7ffe218f0310) at
../softmmu/main.c:50
(gdb) fr 4
4 bdrv_reopen_multiple (bs_queue=0x55de75fa9b70, errp=0x0) at
../block.c:3820
3820 assert(perm == state->perm);
(gdb) list
3815
3816 if (ret == 0) {
3817 uint64_t perm, shared;
3818
3819 bdrv_get_cumulative_perm(state->bs, &perm,
&shared);
3820 assert(perm == state->perm);
3821 assert(shared == state->shared_perm);
3822
3823 bdrv_set_perm(state->bs);
3824 } else {
(gdb) p perm
$1 = 1
(gdb) p state->perm
$2 = 0
Then I had 38 successful iterations and another crash:
0 bdrv_check_update_perm (bs=0x5631ac97bc50, q=0x0, new_used_perm=1,
new_shared_perm=31, ignore_children=0x0, errp=0x7ffd9d477cf8) at
../block.c:2197
1 bdrv_root_attach_child
(child_bs=0x5631ac97bc50, child_name=0x5631aaf6b1f9 "backing",
child_class=0x5631ab280ca0 <child_of_bds>, child_role=8,
ctx=0x5631ab757300, perm=1, shared_perm=31, opaque=0x5631abb8c020,
errp=0x7ffd9d477cf8)
at ../block.c:2642
2 bdrv_attach_child (parent_bs=0x5631abb8c020,
child_bs=0x5631ac97bc50, child_name=0x5631aaf6b1f9 "backing",
child_class=0x5631ab280ca0 <child_of_bds>, child_role=8,
errp=0x7ffd9d477cf8)
at ../block.c:2719
3 bdrv_set_backing_hd (bs=0x5631abb8c020, backing_hd=0x5631ac97bc50,
errp=0x7ffd9d477cf8) at ../block.c:2854
4 stream_prepare (job=0x5631ac751eb0) at ../block/stream.c:74
5 job_prepare (job=0x5631ac751eb0) at ../job.c:784
6 job_txn_apply (job=0x5631ac751eb0, fn=0x5631aacb1156 <job_prepare>)
at ../job.c:158
7 job_do_finalize (job=0x5631ac751eb0) at ../job.c:801
8 job_completed_txn_success (job=0x5631ac751eb0) at ../job.c:855
9 job_completed (job=0x5631ac751eb0) at ../job.c:868
10 job_exit (opaque=0x5631ac751eb0) at ../job.c:888
11 aio_bh_call (bh=0x7f3d9c007680) at ../util/async.c:136
12 aio_bh_poll (ctx=0x5631ab757300) at ../util/async.c:164
13 aio_dispatch (ctx=0x5631ab757300) at ../util/aio-posix.c:381
14 aio_ctx_dispatch (source=0x5631ab757300, callback=0x0,
user_data=0x0) at ../util/async.c:306
15 g_main_context_dispatch () at /lib64/libglib-2.0.so.0
16 glib_pollfds_poll () at ../util/main-loop.c:232
17 os_host_main_loop_wait (timeout=0) at ../util/main-loop.c:255
18 main_loop_wait (nonblocking=0) at ../util/main-loop.c:531
19 qemu_main_loop () at ../softmmu/runstate.c:722
20 main (argc=20, argv=0x7ffd9d478198, envp=0x7ffd9d478240) at
../softmmu/main.c:50
(gdb) list
2192 QLIST_FOREACH(c, &bs->parents, next_parent) {
2193 if (g_slist_find(ignore_children, c)) {
2194 continue;
2195 }
2196
2197 if ((new_used_perm & c->shared_perm) != new_used_perm)
{
2198 char *user = bdrv_child_user_desc(c);
2199 char *perm_names = bdrv_perm_names(new_used_perm &
~c->shared_perm);
2200
2201 error_setg(errp, "Conflicts with use by %s as '%s',
which does not "
(gdb) p c
$1 = (BdrvChild *) 0x8585858585858585
and trying to reproduce it on top of
"block: update graph permissions update" I had 634 successful
iterations
and then the following crash (which looks much better):
0 raise () at /lib64/libc.so.6
1 abort () at /lib64/libc.so.6
2 _nl_load_domain.cold () at /lib64/libc.so.6
3 annobin_assert.c_end () at /lib64/libc.so.6
4 bdrv_replace_child_noperm (child=0x5585bb632010,
new_bs=0x5585bc4f42a0) at ../block.c:2589
5 bdrv_replace_child (child=0x5585bb632010, new_bs=0x5585bc4f42a0,
tran=0x7fff5a14d8e0) at ../block.c:2211
6 bdrv_set_backing_noperm (bs=0x5585bb704020,
backing_bs=0x5585bc4f42a0, tran=0x7fff5a14d8e0, errp=0x7fff5a14d918)
at ../block.c:3030
7 bdrv_set_backing_hd (bs=0x5585bb704020, backing_hd=0x5585bc4f42a0,
errp=0x7fff5a14d918) at ../block.c:3072
8 stream_prepare (job=0x5585bc2ef230) at ../block/stream.c:74
9 job_prepare (job=0x5585bc2ef230) at ../job.c:784
10 job_txn_apply (job=0x5585bc2ef230, fn=0x5585ba638ad0 <job_prepare>)
at ../job.c:158
11 job_do_finalize (job=0x5585bc2ef230) at ../job.c:801
12 job_completed_txn_success (job=0x5585bc2ef230) at ../job.c:855
13 job_completed (job=0x5585bc2ef230) at ../job.c:868
14 job_exit (opaque=0x5585bc2ef230) at ../job.c:888
15 aio_bh_call (bh=0x7f62b8004270) at ../util/async.c:136
16 aio_bh_poll (ctx=0x5585bb2ce4a0) at ../util/async.c:164
17 aio_dispatch (ctx=0x5585bb2ce4a0) at ../util/aio-posix.c:381
18 aio_ctx_dispatch (source=0x5585bb2ce4a0, callback=0x0,
user_data=0x0) at ../util/async.c:306
19 g_main_context_dispatch () at /lib64/libglib-2.0.so.0
20 glib_pollfds_poll () at ../util/main-loop.c:232
21 os_host_main_loop_wait (timeout=0) at ../util/main-loop.c:255
22 main_loop_wait (nonblocking=0) at ../util/main-loop.c:531
23 qemu_main_loop () at ../softmmu/runstate.c:722
24 main (argc=20, argv=0x7fff5a14ddb8, envp=0x7fff5a14de60) at
../softmmu/main.c:50
(gdb) fr 4
4 bdrv_replace_child_noperm (child=0x5585bb632010,
new_bs=0x5585bc4f42a0) at ../block.c:2589
2589 assert(bdrv_get_aio_context(old_bs) ==
bdrv_get_aio_context(new_bs));
(gdb) list
2584 int drain_saldo;
2585
2586 assert(!child->frozen);
2587
2588 if (old_bs && new_bs) {
2589 assert(bdrv_get_aio_context(old_bs) ==
bdrv_get_aio_context(new_bs));
2590 }
2591
2592 new_bs_quiesce_counter = (new_bs ? new_bs->quiesce_counter
: 0);
2593 drain_saldo = new_bs_quiesce_counter -
child->parent_quiesce_counter;
So it seems reasonable to drop test from auto group at least until we
merge "block: update graph permissions update"
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsement...@virtuozzo.com>
---
Note: be free to shorten commit message if needed :)
tests/qemu-iotests/030 | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tests/qemu-iotests/030 b/tests/qemu-iotests/030
index 832fe4a1e2..12aa9ed37e 100755
--- a/tests/qemu-iotests/030
+++ b/tests/qemu-iotests/030
@@ -1,5 +1,5 @@
#!/usr/bin/env python3
-# group: rw auto backing
+# group: rw backing
#
# Tests for image streaming.
#
--
2.29.2
