Re: [Bug 1914696] Re: aarch64: migration failed: Segmentation fault (core dumped)

[Claudio Fontana]

Hi LiZhiJian,

just one thing I noticed in your call stack, your $Subject talks about AArch64,
and you end up in arm_v7m_mmu_idx_for_secstate,

which means that ARM_FEATURE_M is detected, so definitely something looks off 
when it comes to the feature bits..

Ciao,

Claudio

On 2/5/21 4:04 AM, lizhijian wrote:
> paste the call trace
> 
> (gdb) bt
> #0  0x0000aaaac036a02c in armv7m_nvic_neg_prio_requested (opaque=0x0, 
> secure=false) at ../hw/intc/armv7m_nvic.c:406
> #1  0x0000aaaac014dcf4 in arm_v7m_mmu_idx_for_secstate_and_priv 
> (env=0xaaaaca23d950, secstate=false, priv=true) at 
> ../target/arm/m_helper.c:2837
> #2  0x0000aaaac014dd8c in arm_v7m_mmu_idx_for_secstate (env=0xaaaaca23d950, 
> secstate=false) at ../target/arm/m_helper.c:2848
> #3  0x0000aaaac018aa6c in arm_mmu_idx_el (env=0xaaaaca23d950, el=1) at 
> ../target/arm/helper.c:12841
> #4  0x0000aaaac018b788 in rebuild_hflags_internal (env=0xaaaaca23d950) at 
> ../target/arm/helper.c:13100
> #5  0x0000aaaac018b80c in arm_rebuild_hflags (env=0xaaaaca23d950) at 
> ../target/arm/helper.c:13113
> #6  0x0000aaaac007f928 in cpu_post_load (opaque=0xaaaaca233b10, 
> version_id=22) at ../target/arm/machine.c:767
> #7  0x0000aaaabfc8f508 in vmstate_load_state (f=0xaaaaca355520, 
> vmsd=0xaaaac0d59ea8 <vmstate_arm_cpu>, opaque=0xaaaaca233b10, version_id=22) 
> at ../migration/vmstate.c:168
> #8  0x0000aaaabfca3404 in vmstate_load (f=0xaaaaca355520, se=0xaaaaca2708b0) 
> at ../migration/savevm.c:885
> #9  0x0000aaaabfca6410 in qemu_loadvm_section_start_full (f=0xaaaaca355520, 
> mis=0xaaaaca204d90) at ../migration/savevm.c:2396
> #10 0x0000aaaabfca6a8c in qemu_loadvm_state_main (f=0xaaaaca355520, 
> mis=0xaaaaca204d90) at ../migration/savevm.c:2582
> #11 0x0000aaaabfca6c34 in qemu_loadvm_state (f=0xaaaaca355520) at 
> ../migration/savevm.c:2661
> #12 0x0000aaaabfd95bf0 in process_incoming_migration_co (opaque=0x0) at 
> ../migration/migration.c:522
> #13 0x0000aaaac06c6248 in coroutine_trampoline (i0=-895198224, i1=43690) at 
> ../util/coroutine-ucontext.c:173
> #14 0x0000ffffa5071f90 in __startcontext () at 
> ../sysdeps/unix/sysv/linux/aarch64/setcontext.S:123
> 
> 
> ** Information type changed from Public to Public Security
>