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 0x7ffff257c700 (LWP 27649)] > 0x00005555558b4ad3 in object_class_dynamic_cast (class=0x555556523720, > typename=0x5555559ba852 "cpu") at qom/object.c:502 > 502 if (type->name == typename) { > (gdb) p *type > Cannot access memory at address 0x0 > (gdb) bt > #0 0x00005555558b4ad3 in object_class_dynamic_cast > (class=0x555556523720, typename=0x5555559ba852 "cpu") at > qom/object.c:502 > #1 0x00005555558b485a in object_dynamic_cast (obj=0x55555643abe0, > typename=0x5555559ba852 "cpu") at qom/object.c:443 > #2 0x00005555556a4ee3 in acpi_add_cpu_info (o=0x55555643abe0, > opaque=0x7ffff257b930) at /home/new/qemu/hw/i386/acpi-build.c:133 > #3 0x00005555558b50fa in object_child_foreach (obj=0x5555563e8770, > fn=0x5555556a4eac <acpi_add_cpu_info>, opaque=0x7ffff257b930) > at qom/object.c:676 > #4 0x00005555556a4f4b in acpi_add_cpu_info (o=0x5555563e8770, > opaque=0x7ffff257b930) at /home/new/qemu/hw/i386/acpi-build.c:140 > #5 0x00005555558b50fa in object_child_foreach (obj=0x5555562efa40, > fn=0x5555556a4eac <acpi_add_cpu_info>, opaque=0x7ffff257b930) > at qom/object.c:676 > #6 0x00005555556a4f4b in acpi_add_cpu_info (o=0x5555562efa40, > opaque=0x7ffff257b930) at /home/new/qemu/hw/i386/acpi-build.c:140 > #7 0x00005555558b50fa in object_child_foreach (obj=0x5555562d26a0, > fn=0x5555556a4eac <acpi_add_cpu_info>, opaque=0x7ffff257b930) > at qom/object.c:676 > #8 0x00005555556a4f4b in acpi_add_cpu_info (o=0x5555562d26a0, > opaque=0x7ffff257b930) at /home/new/qemu/hw/i386/acpi-build.c:140 > #9 0x00005555558b50fa in object_child_foreach (obj=0x5555562d5770, > fn=0x5555556a4eac <acpi_add_cpu_info>, opaque=0x7ffff257b930) > at qom/object.c:676 > #10 0x00005555556a5024 in acpi_get_cpu_info (cpu=0x7ffff257b930) at > /home/new/qemu/hw/i386/acpi-build.c:149 > #11 0x00005555556a8bb7 in acpi_build (guest_info=0x555556309880, > tables=0x7ffff257b980) at /home/new/qemu/hw/i386/acpi-build.c:1486 > #12 0x00005555556a90cd in acpi_build_update > (build_opaque=0x5555564353b0, offset=0) at > /home/new/qemu/hw/i386/acpi-build.c:1623 > #13 0x0000555555826373 in fw_cfg_read (s=0x55555630d010) at > hw/nvram/fw_cfg.c:255 > #14 0x0000555555826565 in fw_cfg_comb_read (opaque=0x55555630d010, > addr=1, size=1) at hw/nvram/fw_cfg.c:291 > #15 0x0000555555645f52 in memory_region_read_accessor > (mr=0x55555630f4f0, addr=1, value=0x7ffff257bb10, size=1, shift=0, > mask=255) > at /home/new/qemu/memory.c:410 > #16 0x000055555564624c in access_with_adjusted_size (addr=1, > value=0x7ffff257bb10, size=1, access_size_min=1, access_size_max=4, > access=0x555555645ef4 <memory_region_read_accessor>, > mr=0x55555630f4f0) at /home/new/qemu/memory.c:480 > #17 0x0000555555649651 in memory_region_dispatch_read1 > (mr=0x55555630f4f0, addr=1, size=1) at /home/new/qemu/memory.c:1096 > #18 0x0000555555649709 in memory_region_dispatch_read > (mr=0x55555630f4f0, addr=1, pval=0x7ffff257bc00, size=1) > at /home/new/qemu/memory.c:1118 > #19 0x000055555564d325 in io_mem_read (mr=0x55555630f4f0, addr=1, > pval=0x7ffff257bc00, size=1) at /home/new/qemu/memory.c:1961 > #20 0x00005555555f7bfe in address_space_rw (as=0x555555df6d20 > <address_space_io>, addr=1297, buf=0x7ffff7ff3000 "&", len=1, > is_write=false) at /home/new/qemu/exec.c:2086 > #21 0x00005555556429d6 in kvm_handle_io (port=1297, data=0x7ffff7ff3000, > direction=0, size=1, count=1024) > at /home/new/qemu/kvm-all.c:1597 > #22 0x0000555555642f7a in kvm_cpu_exec (cpu=0x5555562f3060) at > /home/new/qemu/kvm-all.c:1734 > #23 0x000055555562a4d8 in qemu_kvm_cpu_thread_fn (arg=0x5555562f3060) > at /home/new/qemu/cpus.c:939 > #24 0x00007ffff572a7f6 in start_thread () from /lib64/libpthread.so.0 > #25 0x00007ffff548609d in clone () from /lib64/libc.so.6 > #26 0x0000000000000000 in ?? () > (gdb) p *class > $2 = {type = 0x0, interfaces = 0x21 = {<error reading variable> > (gdb) > > Best regards, > -Gonglei > >