[Qemu-devel] [Bug] QEMU crashed with latest qemu master tree code
Hi,
Command line:
#./qemu-system-x86_64 -enable-kvm -m 2048 -machine q35 -device
ide-drive,bus=ide.2,drive=MacHDD \
-drive id=MacHDD,if=none,file=/mnt/sdb/gonglei/image/redhat_q35.img -monitor
stdio -vnc :10 -readconfig ../docs/q35-chipset.cfg
(qemu) Segmentation fault (core dumped)
Some clews:
1. the bad commit is 0e4a77370594c91dd126f9872893ed473374cc72
2. if I do not add command line argument '-readconfig ../docs/q35-chipset.cfg
', it works well.
3. backtrace as below:
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7257c700 (LWP 27649)]
0x558b4ad3 in object_class_dynamic_cast (class=0x56523720,
typename=0x559ba852 cpu) at qom/object.c:502
502 if (type-name == typename) {
(gdb) p *type
Cannot access memory at address 0x0
(gdb) bt
#0 0x558b4ad3 in object_class_dynamic_cast (class=0x56523720,
typename=0x559ba852 cpu) at qom/object.c:502
#1 0x558b485a in object_dynamic_cast (obj=0x5643abe0,
typename=0x559ba852 cpu) at qom/object.c:443
#2 0x556a4ee3 in acpi_add_cpu_info (o=0x5643abe0,
opaque=0x7257b930) at /home/new/qemu/hw/i386/acpi-build.c:133
#3 0x558b50fa in object_child_foreach (obj=0x563e8770,
fn=0x556a4eac acpi_add_cpu_info, opaque=0x7257b930)
at qom/object.c:676
#4 0x556a4f4b in acpi_add_cpu_info (o=0x563e8770,
opaque=0x7257b930) at /home/new/qemu/hw/i386/acpi-build.c:140
#5 0x558b50fa in object_child_foreach (obj=0x562efa40,
fn=0x556a4eac acpi_add_cpu_info, opaque=0x7257b930)
at qom/object.c:676
#6 0x556a4f4b in acpi_add_cpu_info (o=0x562efa40,
opaque=0x7257b930) at /home/new/qemu/hw/i386/acpi-build.c:140
#7 0x558b50fa in object_child_foreach (obj=0x562d26a0,
fn=0x556a4eac acpi_add_cpu_info, opaque=0x7257b930)
at qom/object.c:676
#8 0x556a4f4b in acpi_add_cpu_info (o=0x562d26a0,
opaque=0x7257b930) at /home/new/qemu/hw/i386/acpi-build.c:140
#9 0x558b50fa in object_child_foreach (obj=0x562d5770,
fn=0x556a4eac acpi_add_cpu_info, opaque=0x7257b930)
at qom/object.c:676
#10 0x556a5024 in acpi_get_cpu_info (cpu=0x7257b930) at
/home/new/qemu/hw/i386/acpi-build.c:149
#11 0x556a8bb7 in acpi_build (guest_info=0x56309880,
tables=0x7257b980) at /home/new/qemu/hw/i386/acpi-build.c:1486
#12 0x556a90cd in acpi_build_update (build_opaque=0x564353b0,
offset=0) at /home/new/qemu/hw/i386/acpi-build.c:1623
#13 0x55826373 in fw_cfg_read (s=0x5630d010) at
hw/nvram/fw_cfg.c:255
#14 0x55826565 in fw_cfg_comb_read (opaque=0x5630d010, addr=1,
size=1) at hw/nvram/fw_cfg.c:291
#15 0x55645f52 in memory_region_read_accessor (mr=0x5630f4f0,
addr=1, value=0x7257bb10, size=1, shift=0, mask=255)
at /home/new/qemu/memory.c:410
#16 0x5564624c in access_with_adjusted_size (addr=1,
value=0x7257bb10, size=1, access_size_min=1, access_size_max=4,
access=0x55645ef4 memory_region_read_accessor, mr=0x5630f4f0) at
/home/new/qemu/memory.c:480
#17 0x55649651 in memory_region_dispatch_read1 (mr=0x5630f4f0,
addr=1, size=1) at /home/new/qemu/memory.c:1096
#18 0x55649709 in memory_region_dispatch_read (mr=0x5630f4f0,
addr=1, pval=0x7257bc00, size=1)
at /home/new/qemu/memory.c:1118
#19 0x5564d325 in io_mem_read (mr=0x5630f4f0, addr=1,
pval=0x7257bc00, size=1) at /home/new/qemu/memory.c:1961
#20 0x555f7bfe in address_space_rw (as=0x55df6d20
address_space_io, addr=1297, buf=0x77ff3000 , len=1,
is_write=false) at /home/new/qemu/exec.c:2086
#21 0x556429d6 in kvm_handle_io (port=1297, data=0x77ff3000,
direction=0, size=1, count=1024)
at /home/new/qemu/kvm-all.c:1597
#22 0x55642f7a in kvm_cpu_exec (cpu=0x562f3060) at
/home/new/qemu/kvm-all.c:1734
#23 0x5562a4d8 in qemu_kvm_cpu_thread_fn (arg=0x562f3060) at
/home/new/qemu/cpus.c:939
#24 0x7572a7f6 in start_thread () from /lib64/libpthread.so.0
#25 0x7548609d in clone () from /lib64/libc.so.6
#26 0x in ?? ()
(gdb) p *class
$2 = {type = 0x0, interfaces = 0x21 = {error reading variable
(gdb)
Best regards,
-Gonglei
Re: [Qemu-devel] [Bug] QEMU crashed with latest qemu master tree code
Hi,
Anyone encounter the same issue with me? Thanks.
Best regards,
-Gonglei
-Original Message-
Subject: [Qemu-devel] [Bug] QEMU crashed with latest qemu master tree code
Hi,
Command line:
#./qemu-system-x86_64 -enable-kvm -m 2048 -machine q35 -device
ide-drive,bus=ide.2,drive=MacHDD \
-drive id=MacHDD,if=none,file=/mnt/sdb/gonglei/image/redhat_q35.img
-monitor stdio -vnc :10 -readconfig ../docs/q35-chipset.cfg
(qemu) Segmentation fault (core dumped)
Some clews:
1. the bad commit is 0e4a77370594c91dd126f9872893ed473374cc72
2. if I do not add command line argument '-readconfig ../docs/q35-chipset.cfg
',
it works well.
3. backtrace as below:
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7257c700 (LWP 27649)]
0x558b4ad3 in object_class_dynamic_cast (class=0x56523720,
typename=0x559ba852 cpu) at qom/object.c:502
502 if (type-name == typename) {
(gdb) p *type
Cannot access memory at address 0x0
(gdb) bt
#0 0x558b4ad3 in object_class_dynamic_cast
(class=0x56523720, typename=0x559ba852 cpu) at
qom/object.c:502
#1 0x558b485a in object_dynamic_cast (obj=0x5643abe0,
typename=0x559ba852 cpu) at qom/object.c:443
#2 0x556a4ee3 in acpi_add_cpu_info (o=0x5643abe0,
opaque=0x7257b930) at /home/new/qemu/hw/i386/acpi-build.c:133
#3 0x558b50fa in object_child_foreach (obj=0x563e8770,
fn=0x556a4eac acpi_add_cpu_info, opaque=0x7257b930)
at qom/object.c:676
#4 0x556a4f4b in acpi_add_cpu_info (o=0x563e8770,
opaque=0x7257b930) at /home/new/qemu/hw/i386/acpi-build.c:140
#5 0x558b50fa in object_child_foreach (obj=0x562efa40,
fn=0x556a4eac acpi_add_cpu_info, opaque=0x7257b930)
at qom/object.c:676
#6 0x556a4f4b in acpi_add_cpu_info (o=0x562efa40,
opaque=0x7257b930) at /home/new/qemu/hw/i386/acpi-build.c:140
#7 0x558b50fa in object_child_foreach (obj=0x562d26a0,
fn=0x556a4eac acpi_add_cpu_info, opaque=0x7257b930)
at qom/object.c:676
#8 0x556a4f4b in acpi_add_cpu_info (o=0x562d26a0,
opaque=0x7257b930) at /home/new/qemu/hw/i386/acpi-build.c:140
#9 0x558b50fa in object_child_foreach (obj=0x562d5770,
fn=0x556a4eac acpi_add_cpu_info, opaque=0x7257b930)
at qom/object.c:676
#10 0x556a5024 in acpi_get_cpu_info (cpu=0x7257b930) at
/home/new/qemu/hw/i386/acpi-build.c:149
#11 0x556a8bb7 in acpi_build (guest_info=0x56309880,
tables=0x7257b980) at /home/new/qemu/hw/i386/acpi-build.c:1486
#12 0x556a90cd in acpi_build_update
(build_opaque=0x564353b0, offset=0) at
/home/new/qemu/hw/i386/acpi-build.c:1623
#13 0x55826373 in fw_cfg_read (s=0x5630d010) at
hw/nvram/fw_cfg.c:255
#14 0x55826565 in fw_cfg_comb_read (opaque=0x5630d010,
addr=1, size=1) at hw/nvram/fw_cfg.c:291
#15 0x55645f52 in memory_region_read_accessor
(mr=0x5630f4f0, addr=1, value=0x7257bb10, size=1, shift=0,
mask=255)
at /home/new/qemu/memory.c:410
#16 0x5564624c in access_with_adjusted_size (addr=1,
value=0x7257bb10, size=1, access_size_min=1, access_size_max=4,
access=0x55645ef4 memory_region_read_accessor,
mr=0x5630f4f0) at /home/new/qemu/memory.c:480
#17 0x55649651 in memory_region_dispatch_read1
(mr=0x5630f4f0, addr=1, size=1) at /home/new/qemu/memory.c:1096
#18 0x55649709 in memory_region_dispatch_read
(mr=0x5630f4f0, addr=1, pval=0x7257bc00, size=1)
at /home/new/qemu/memory.c:1118
#19 0x5564d325 in io_mem_read (mr=0x5630f4f0, addr=1,
pval=0x7257bc00, size=1) at /home/new/qemu/memory.c:1961
#20 0x555f7bfe in address_space_rw (as=0x55df6d20
address_space_io, addr=1297, buf=0x77ff3000 , len=1,
is_write=false) at /home/new/qemu/exec.c:2086
#21 0x556429d6 in kvm_handle_io (port=1297, data=0x77ff3000,
direction=0, size=1, count=1024)
at /home/new/qemu/kvm-all.c:1597
#22 0x55642f7a in kvm_cpu_exec (cpu=0x562f3060) at
/home/new/qemu/kvm-all.c:1734
#23 0x5562a4d8 in qemu_kvm_cpu_thread_fn (arg=0x562f3060)
at /home/new/qemu/cpus.c:939
#24 0x7572a7f6 in start_thread () from /lib64/libpthread.so.0
#25 0x7548609d in clone () from /lib64/libc.so.6
#26 0x in ?? ()
(gdb) p *class
$2 = {type = 0x0, interfaces = 0x21 = {error reading variable
(gdb)
Best regards,
-Gonglei
