1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
qemu-io crashes with SIGABRT and Assertion `c->entries[i].offset != 0' failed
git is at HEAD a93ece47fd9edbd4558db24300056c9a57d3bcd4
This is on ppc64le architecture.
Re-production steps:
1. Copy the attached files named backing_img.file and test.img to a directory
2. And customize the following command to point to the above directory and run the same.
/usr/bin/qemu-io <path to>/test.img -c "write 1352192 1707520"
3.Output of the above command.
qemu-io: block/qcow2-cache.c:411: qcow2_cache_entry_mark_dirty: Assertion `c->entries[i].offset != 0' failed.
Aborted (core dumped)
from gdb:
(gdb) bt
#0 0x00003fff833eeff0 in raise () from /lib64/libc.so.6
#1 0x00003fff833f136c in abort () from /lib64/libc.so.6
#2 0x00003fff833e4c44 in __assert_fail_base () from /lib64/libc.so.6
#3 0x00003fff833e4d34 in __assert_fail () from /lib64/libc.so.6
#4 0x000000001006a594 in qcow2_cache_entry_mark_dirty (bs=0x2e886f60, c=0x2e879700, table=0x3fff81200000) at block/qcow2-cache.c:411
#5 0x0000000010056154 in alloc_refcount_block (bs=0x2e886f60, cluster_index=2, refcount_block=0x3fff80cff808) at block/qcow2-refcount.c:417
#6 0x0000000010057520 in update_refcount (bs=0x2e886f60, offset=1048576, length=524288, addend=1, decrease=false, type=QCOW2_DISCARD_NEVER)
at block/qcow2-refcount.c:834
#7 0x0000000010057dc8 in qcow2_alloc_clusters_at (bs=0x2e886f60, offset=1048576, nb_clusters=1) at block/qcow2-refcount.c:1032
#8 0x00000000100636d8 in do_alloc_cluster_offset (bs=0x2e886f60, guest_offset=2097152, host_offset=0x3fff80cff9e0, nb_clusters=0x3fff80cff9d8)
at block/qcow2-cluster.c:1221
#9 0x0000000010063afc in handle_alloc (bs=0x2e886f60, guest_offset=2097152, host_offset=0x3fff80cffab0, bytes=0x3fff80cffab8, m=0x3fff80cffb60)
at block/qcow2-cluster.c:1324
#10 0x0000000010064178 in qcow2_alloc_cluster_offset (bs=0x2e886f60, offset=1572864, bytes=0x3fff80cffb4c, host_offset=0x3fff80cffb58, m=0x3fff80cffb60)
at block/qcow2-cluster.c:1511
#11 0x000000001004d3f4 in qcow2_co_pwritev (bs=0x2e886f60, offset=1572864, bytes=1486848, qiov=0x3fffc85f0bf0, flags=0) at block/qcow2.c:1919
#12 0x00000000100a9648 in bdrv_driver_pwritev (bs=0x2e886f60, offset=1352192, bytes=1707520, qiov=0x3fffc85f0bf0, flags=16) at block/io.c:898
#13 0x00000000100ab630 in bdrv_aligned_pwritev (child=0x2e8927f0, req=0x3fff80cffdd8, offset=1352192, bytes=1707520, align=1, qiov=0x3fffc85f0bf0, flags=16)
at block/io.c:1440
#14 0x00000000100ac4ac in bdrv_co_pwritev (child=0x2e8927f0, offset=1352192, bytes=1707520, qiov=0x3fffc85f0bf0, flags=BDRV_REQ_FUA) at block/io.c:1691
#15 0x000000001008da0c in blk_co_pwritev (blk=0x2e879410, offset=1352192, bytes=1707520, qiov=0x3fffc85f0bf0, flags=BDRV_REQ_FUA) at block/block-backend.c:1085
#16 0x000000001008db68 in blk_write_entry (opaque=0x3fffc85f0c08) at block/block-backend.c:1110
#17 0x00000000101aa444 in coroutine_trampoline (i0=780753552, i1=0) at util/coroutine-ucontext.c:79
#18 0x00003fff83402b9c in makecontext () from /lib64/libc.so.6
#19 0x0000000000000000 in ?? ()
(gdb) bt full
#0 0x00003fff833eeff0 in raise () from /lib64/libc.so.6
No symbol table info available.
#1 0x00003fff833f136c in abort () from /lib64/libc.so.6
No symbol table info available.
#2 0x00003fff833e4c44 in __assert_fail_base () from /lib64/libc.so.6
No symbol table info available.
#3 0x00003fff833e4d34 in __assert_fail () from /lib64/libc.so.6
No symbol table info available.
#4 0x000000001006a594 in qcow2_cache_entry_mark_dirty (bs=0x2e886f60, c=0x2e879700, table=0x3fff81200000) at block/qcow2-cache.c:411
i = 0
__PRETTY_FUNCTION__ = "qcow2_cache_entry_mark_dirty"
#5 0x0000000010056154 in alloc_refcount_block (bs=0x2e886f60, cluster_index=2, refcount_block=0x3fff80cff808) at block/qcow2-refcount.c:417
s = 0x2e893210
refcount_table_index = 0
ret = 0
new_block = 0
blocks_used = 72057594818669408
meta_offset = 1572863
#6 0x0000000010057520 in update_refcount (bs=0x2e886f60, offset=1048576, length=524288, addend=1, decrease=false, type=QCOW2_DISCARD_NEVER)
at block/qcow2-refcount.c:834
block_index = 268870408
refcount = 780741808
cluster_index = 2
table_index = 0
s = 0x2e893210
start = 1048576
last = 1048576
cluster_offset = 1048576
refcount_block = 0x3fff81200000
old_table_index = -1
ret = 16383
#7 0x0000000010057dc8 in qcow2_alloc_clusters_at (bs=0x2e886f60, offset=1048576, nb_clusters=1) at block/qcow2-refcount.c:1032
s = 0x2e893210
cluster_index = 3
refcount = 0
i = 1
ret = 0
__PRETTY_FUNCTION__ = "qcow2_alloc_clusters_at"
#8 0x00000000100636d8 in do_alloc_cluster_offset (bs=0x2e886f60, guest_offset=2097152, host_offset=0x3fff80cff9e0, nb_clusters=0x3fff80cff9d8)
at block/qcow2-cluster.c:1221
ret = 780743184
s = 0x2e893210
#9 0x0000000010063afc in handle_alloc (bs=0x2e886f60, guest_offset=2097152, host_offset=0x3fff80cffab0, bytes=0x3fff80cffab8, m=0x3fff80cffb60)
at block/qcow2-cluster.c:1324
s = 0x2e893210
l2_index = 4
l2_table = 0x0
entry = 0
nb_clusters = 1
ret = 0
---Type <return> to continue, or q <return> to quit---
keep_old_clusters = false
alloc_cluster_offset = 1048576
__PRETTY_FUNCTION__ = "handle_alloc"
requested_bytes = 17960562528
avail_bytes = -2133853344
nb_bytes = 16383
old_m = 0x100000000
#10 0x0000000010064178 in qcow2_alloc_cluster_offset (bs=0x2e886f60, offset=1572864, bytes=0x3fff80cffb4c, host_offset=0x3fff80cffb58, m=0x3fff80cffb60)
at block/qcow2-cluster.c:1511
s = 0x2e893210
start = 2097152
remaining = 962560
cluster_offset = 1048576
cur_bytes = 962560
ret = 0
__PRETTY_FUNCTION__ = "qcow2_alloc_cluster_offset"
#11 0x000000001004d3f4 in qcow2_co_pwritev (bs=0x2e886f60, offset=1572864, bytes=1486848, qiov=0x3fffc85f0bf0, flags=0) at block/qcow2.c:1919
s = 0x2e893210
offset_in_cluster = 0
ret = 0
cur_bytes = 1486848
cluster_offset = 524288
hd_qiov = {iov = 0x2e858660, niov = 1, nalloc = 1, size = 220672}
bytes_done = 220672
cluster_data = 0x0
l2meta = 0x0
__PRETTY_FUNCTION__ = "qcow2_co_pwritev"
#12 0x00000000100a9648 in bdrv_driver_pwritev (bs=0x2e886f60, offset=1352192, bytes=1707520, qiov=0x3fffc85f0bf0, flags=16) at block/io.c:898
drv = 0x102036f0 <bdrv_qcow2>
sector_num = 780706080
nb_sectors = 3069122264
ret = -203160320
__PRETTY_FUNCTION__ = "bdrv_driver_pwritev"
#13 0x00000000100ab630 in bdrv_aligned_pwritev (child=0x2e8927f0, req=0x3fff80cffdd8, offset=1352192, bytes=1707520, align=1, qiov=0x3fffc85f0bf0, flags=16)
at block/io.c:1440
bs = 0x2e886f60
drv = 0x102036f0 <bdrv_qcow2>
waited = false
ret = 0
end_sector = 5976
bytes_remaining = 1707520
max_transfer = 2147483647
__PRETTY_FUNCTION__ = "bdrv_aligned_pwritev"
#14 0x00000000100ac4ac in bdrv_co_pwritev (child=0x2e8927f0, offset=1352192, bytes=1707520, qiov=0x3fffc85f0bf0, flags=BDRV_REQ_FUA) at block/io.c:1691
bs = 0x2e886f60
req = {bs = 0x2e886f60, offset = 1352192, bytes = 1707520, type = BDRV_TRACKED_WRITE, serialising = false, overlap_offset = 1352192,
overlap_bytes = 1707520, list = {le_next = 0x0, le_prev = 0x2e88a1d8}, co = 0x2e895a90, wait_queue = {entries = {sqh_first = 0x0,
sqh_last = 0x3fff80cffe20}}, waiting_for = 0x0}
align = 1
head_buf = 0x0
---Type <return> to continue, or q <return> to quit---
tail_buf = 0x0
local_qiov = {iov = 0x3fff80cffdb0, niov = -2133852688, nalloc = 16383, size = 1352192}
use_local_qiov = false
ret = 0
__PRETTY_FUNCTION__ = "bdrv_co_pwritev"
#15 0x000000001008da0c in blk_co_pwritev (blk=0x2e879410, offset=1352192, bytes=1707520, qiov=0x3fffc85f0bf0, flags=BDRV_REQ_FUA) at block/block-backend.c:1085
ret = 0
bs = 0x2e886f60
#16 0x000000001008db68 in blk_write_entry (opaque=0x3fffc85f0c08) at block/block-backend.c:1110
rwco = 0x3fffc85f0c08
#17 0x00000000101aa444 in coroutine_trampoline (i0=780753552, i1=0) at util/coroutine-ucontext.c:79
arg = {p = 0x2e895a90, i = {780753552, 0}}
self = 0x2e895a90
co = 0x2e895a90
#18 0x00003fff83402b9c in makecontext () from /lib64/libc.so.6
No symbol table info available.
#19 0x0000000000000000 in ?? ()
No symbol table info available.
Will attach the 'image_fuzzer' images.
|