diff options
Diffstat (limited to 'results/classifier/accel-gemma3:12b/kvm/2792')
| -rw-r--r-- | results/classifier/accel-gemma3:12b/kvm/2792 | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/results/classifier/accel-gemma3:12b/kvm/2792 b/results/classifier/accel-gemma3:12b/kvm/2792 new file mode 100644 index 00000000..02410c62 --- /dev/null +++ b/results/classifier/accel-gemma3:12b/kvm/2792 @@ -0,0 +1,71 @@ + +qemu-system-aarch64 segfault at startup with --enable-rust +Description of problem: +The following commit breaks type class initialization for `pl011_luminary`: + +``` +d9434f29ca83e114fe02ed24c8ad2ccfa7ac3fe9 is the first bad commit +commit d9434f29ca83e114fe02ed24c8ad2ccfa7ac3fe9 +Author: Paolo Bonzini <pbonzini@redhat.com> +Date: Fri Nov 29 11:38:59 2024 +0100 + + rust: qom: move device_id to PL011 class side + + There is no need to monkeypatch DeviceId::Luminary into the already-initialized + PL011State. Instead, now that we can define a class hierarchy, we can define + PL011Class and make device_id a field in there. + + There is also no need anymore to have "Arm" as zero, so change DeviceId into a + wrapper for the array; all it does is provide an Index<hwaddr> implementation + because arrays can only be indexed by usize. + + Reviewed-by: Zhao Liu <zhao1.liu@intel.com> + Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> + + rust/hw/char/pl011/src/device.rs | 59 +++++++++++++++++++--------------------- + 1 file changed, 28 insertions(+), 31 deletions(-) +bisect found first bad commit +``` + +It results in a segmentation fault during type initialization at startup: + +``` +$ ./build/qemu-system-aarch64 -machine help +zsh: segmentation fault (core dumped) ./build/qemu-system-aarch64 -machine help +``` + +Because the class is uninitialized on the `pl011_luminary` TypeInfo (I think): + +``` +$ gdb --args ./build/qemu-system-aarch64 -machine help +... +Thread 1 "qemu-system-aar" received signal SIGSEGV, Segmentation fault. +0x0000555555fc0fcf in object_class_dynamic_cast (class=class@entry=0x5555575ca128, typename=typename@entry=0x5555562650cd "resettable") at ../qom/object.c:966 +966 if (type->class->interfaces && +(gdb) p type->class +$1 = (ObjectClass *) 0x0 +(gdb) bt +#0 0x0000555555fc0fcf in object_class_dynamic_cast (class=class@entry=0x5555575ca128, typename=typename@entry=0x5555562650cd "resettable") at ../qom/object.c:966 +#1 0x0000555555fc1473 in object_class_dynamic_cast_assert (class=class@entry=0x5555575ca128, typename=typename@entry=0x5555562650cd "resettable", + file=file@entry=0x5555562651a0 "/home/pdel/qemu/include/hw/resettable.h", line=line@entry=21, func=func@entry=0x55555643d2b0 <__func__.13> "RESETTABLE_CLASS") at ../qom/object.c:1016 +#2 0x0000555555fbc61b in RESETTABLE_CLASS (klass=0x5555575ca128) at /home/pdel/qemu/include/hw/resettable.h:21 +#3 device_class_set_legacy_reset (dc=0x5555575ca128, dev_reset=0x5555560dacb0 <qemu_api::qdev::rust_reset_fn>) at ../hw/core/qdev.c:790 +#4 0x00005555560dac03 in qemu_api::qdev::<impl qemu_api::qom::ClassInitImpl<qemu_api::bindings::DeviceClass> for T>::class_init (dc=0x5555575ca128) + at rust/qemu-api/libqemu_api.rlib.p/structured/qdev.rs:84 +#5 qemu_api::sysbus::<impl qemu_api::qom::ClassInitImpl<qemu_api::bindings::SysBusDeviceClass> for T>::class_init (sdc=0x5555575ca128) at rust/qemu-api/libqemu_api.rlib.p/structured/sysbus.rs:31 +#6 <pl011::device::PL011State as qemu_api::qom::ClassInitImpl<pl011::device::PL011Class>>::class_init (klass=0x5555575ca120) at ../rust/hw/char/pl011/src/device.rs:140 +#7 qemu_api::qom::rust_class_init (klass=0x5555575ca120, _data=<optimized out>) at rust/qemu-api/libqemu_api.rlib.p/structured/qom.rs:176 +#8 0x0000555555fc0930 in type_initialize (ti=0x555557555eb0) at ../qom/object.c:359 +#9 type_initialize (ti=ti@entry=0x555557556070) at ../qom/object.c:365 +#10 0x0000555555fc1190 in type_initialize (ti=0x555557556070) at ../qom/object.c:1122 +#11 object_class_foreach_tramp (key=<optimized out>, value=0x555557556070, opaque=0x7fffffffdd00) at ../qom/object.c:1110 +#12 0x00007ffff7528668 in g_hash_table_foreach () from /lib64/libglib-2.0.so.0 +#13 0x0000555555fc1931 in object_class_foreach (opaque=0x7fffffffdcf8, include_abstract=false, implements_type=<optimized out>, fn=0x555555fbf810 <object_class_get_list_tramp>) at ../qom/object.c:87 +#14 object_class_get_list (implements_type=implements_type@entry=0x5555562c5440 "machine", include_abstract=include_abstract@entry=false) at ../qom/object.c:1189 +#15 0x0000555555bf53ac in machine_help_func (qdict=<error reading variable: dwarf2_find_location_expression: Corrupted DWARF expression.>) at ../system/vl.c:1559 +#16 qemu_init (argc=3, argv=<optimized out>) at ../system/vl.c:3319 +#17 0x00005555558f1a89 in main (argc=<optimized out>, argv=<optimized out>) at ../system/main.c:68 +``` +Steps to reproduce: +1. Checkout cf86770c7aa31ebd6e56f4eeb25c34107f92c51e +2. `./configure --target-list=aarch64-softmmu --enable-rust && ninja -C build && ./build/qemu-system-aarch64 -machine help` |