Gavin Shan fe6bda58e0 kvm: Fix crash due to access uninitialized kvm_state ... Runs into core dump on arm64 and the backtrace extracted from the core dump is shown as below. It's caused by accessing uninitialized @kvm_state in kvm_flush_coalesced_mmio_buffer() due to commit 176d073029 ("hw/arm/virt: Use machine_memory_devices_init()"), where the machine's memory region is added earlier than before. main qemu_init configure_accelerators qemu_opts_foreach do_configure_accelerator accel_init_machine kvm_init virt_kvm_type virt_set_memmap machine_memory_devices_init memory_region_add_subregion memory_region_add_subregion_common memory_region_update_container_subregions memory_region_transaction_begin qemu_flush_coalesced_mmio_buffer kvm_flush_coalesced_mmio_buffer Fix it by bailing early in kvm_flush_coalesced_mmio_buffer() on the uninitialized @kvm_state. With this applied, no crash is observed on arm64. Fixes: 176d073029 ("hw/arm/virt: Use machine_memory_devices_init()") Signed-off-by: Gavin Shan <gshan@redhat.com> Reviewed-by: David Hildenbrand <david@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Message-id: 20230731125946.2038742-1-gshan@redhat.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>		2023-07-31 14:19:43 +01:00
..
kvm-accel-ops.c	gdbstub: move update guest debug to accel ops	2023-03-07 20:44:09 +00:00
kvm-all.c	kvm: Fix crash due to access uninitialized kvm_state	2023-07-31 14:19:43 +01:00
kvm-cpus.h	gdbstub: Use vaddr type for generic insert/remove_breakpoint() API	2023-02-27 22:29:01 +01:00
meson.build	target/i386/kvm: Restrict SEV stubs to x86 architecture	2021-10-13 10:47:49 +02:00
trace-events	docs: fix references to docs/devel/tracing.rst	2021-06-02 06:51:09 +02:00
trace.h	trace: switch position of headers to what Meson requires	2020-08-21 06:18:24 -04:00