問題現象

[ 3513.290096] [T1514336] misc c10:89 virtio-vmctl: misc vhost-vdmabuf: [name:vhost_vdmabuf&]vhost_vdmabuf_release vmid is 0x37cd. vdmabuf: 00000000b7493b62
[ 3513.293621] [T1514336] virtio-vmctl: [name:vhost_iommu&]vhost_iommu_release:734
[ 3513.295648] [T1414336] virtio-vmctl: [name:snd_soc_audiodsp_common&][VADSP] mtk_dsp_unregister_event_cb() vm_id=0
[ 3513.299982] [T1414336] virtio-vmctl: [name:vhost_adsp&][VADSP]vhost_adsp_release() L1312 vadsp->vm_id 0
!!
[ 3513.300523] [T1414336] virtio-vmctl: [name:vhost_iommu&]vhost_cmdq release
[ 3513.304489] [T1414336] virtio-vmctl: [name:vhost_iommu&]vhost_disp release
[ 3513.307342] [T1414336] virtio-vmctl: vhost-disp: [name:vhost_disp&]vhost_disp_release
[ 3513.308383] [T1414336] virtio-vmctl: vhost-disp: [name:vhost_disp&]vhost_disp_release done
[ 3513.311551] [T1414336] virtio-vmctl: vhost-mmdvfs: [name:vhost_mmdvfs&][vhost_mmdvfs]vhost_mmdvfs_release: done.
[ 3513.313101] [T1414336] virtio-vmctl: [name:debug_monitors&]Unexpected kernel BRK exception at EL1
[ 3513.315932] [T1414336] virtio-vmctl: [name:traps&]Internal error: BRK handler: 00000000f2005512 [#1] PREEMPT SMP
[ 3513.319232] [T1414336] virtio-vmctl: [name:mediatek_cpufreq_hw&]cpufreq stop DVFS log done
[ 3513.345424] [T1414336] virtio-vmctl: [name:mrdump&]Kernel Offset: 0x2843c00000 from 0xffffffc008000000
[ 3513.346585] [T1414336] virtio-vmctl: [name:mrdump&]PHYS_OFFSET: 0x40000000
[ 3513.349306] [T1414336] virtio-vmctl: [name:mrdump&]pstate: 224000c5 (nzCv daIF +PAN -UAO)
[ 3513.350323] [T1414336] virtio-vmctl: [name:mrdump&]pc : [0xffffffe84cc372e8] queued_spin_lock_slowpath+0x328/0x480
[ 3513.351696] [T1414336] virtio-vmctl: [name:mrdump&]lr : [0xffffffe84cc370d0] queued_spin_lock_slowpath+0x110/0x480
[ 3513.352984] [T1414336] virtio-vmctl: [name:mrdump&]sp : ffffffc00c583a00
[ 3513.355636] [T1414336] virtio-vmctl: [name:mrdump&]x29: ffffffc00c583a10 x28: 0000000000000001
[ 3513.356707] [T1414336] virtio-vmctl: [name:mrdump&]x27: 00000000400004d8 x26: ffffffe84da0af80
[ 3513.357778] [T1414336] virtio-vmctl: [name:mrdump&]x25: 000000000000961c x24: ffffff80681295f8
[ 3513.358849] [T1414336] virtio-vmctl: [name:mrdump&]x23: ffffff8170bba500 x22: 0000000000000000
[ 3513.361767] [T1414336] virtio-vmctl: [name:mrdump&]x21: ffffffe84da0ba28 x20: ffffffe84d6fb500
[ 3513.362837] [T1414336] virtio-vmctl: [name:mrdump&]x19: ffffff806812961c x18: ffffffe84da1e380
[ 3513.364017] [T1414336] virtio-vmctl: [name:mrdump&]x17: 00000000ad6b63b6 x16: 00000000ad6b63b6
[ 3513.366983] [T1414336] virtio-vmctl: [name:mrdump&]x15: ffffff801005c000 x14: ffffffc00c580000
[ 3513.368053] [T1414336] virtio-vmctl: [name:mrdump&]x13: ffffffc00c584000 x12: ffffffc00c584000
[ 3513.369123] [T1414336] virtio-vmctl: [name:mrdump&]x11: 0000000000000168 x10: 0000000000000059
[ 3513.370194] [T1414336] virtio-vmctl: [name:mrdump&]x9 : ffffff8170bba500 x8 : 0000000000000168
[ 3513.373212] [T1414336] virtio-vmctl: [name:mrdump&]x7 : 0000000000000000 x6 : 00000000000000ff
[ 3513.374281] [T1414336] virtio-vmctl: [name:mrdump&]x5 : ffffff802ea3aee0 x4 : ffffff8170bbe1a0
[ 3513.375352] [T1414336] virtio-vmctl: [name:mrdump&]x3 : 0000000000000000 x2 : 0000000000000001
[ 3513.376422] [T1414336] virtio-vmctl: [name:mrdump&]x1 : 0000000000140000 x0 : 0000000000000004
[ 3513.379246] [T1414336] virtio-vmctl: [name:mrdump&]PC: 0xffffffe84cc372e8:

[ 3513.691139] [T1414336] virtio-vmctl: CPU: 4 PID: 14336 Comm: virtio-vmctl Tainted: G S W OE 6.1.124 #1
[ 3513.692418] [T1414336] virtio-vmctl: Hardware name: MT8676 (DT)
[ 3513.693152] [T1414336] virtio-vmctl: Call trace:
[ 3513.693724] [T1414336] virtio-vmctl: dump_backtrace+0xf8/0x148
[ 3513.694461] [T1414336] virtio-vmctl: show_stack+0x18/0x24
[ 3513.697091] [T1414336] virtio-vmctl: dump_stack_lvl+0x60/0x7c
[ 3513.697816] [T1414336] virtio-vmctl: dump_stack+0x18/0x38
[ 3513.698496] [T1414336] virtio-vmctl: mrdump_common_die+0x3dc/0x4b0 [mrdump]
[ 3513.699497] [T1414336] virtio-vmctl: ipanic_die+0x20/0x34 [mrdump]
[ 3513.700284] [T1414336] virtio-vmctl: notify_die+0x80/0xd8
[ 3513.700970] [T1414336] virtio-vmctl: die+0xac/0x2d8
[ 3513.703404] [T1414336] virtio-vmctl: arm64_notify_die+0x28/0xac
[ 3513.704149] [T1414336] virtio-vmctl: do_debug_exception+0xc8/0x148
[ 3513.704932] [T1414336] virtio-vmctl: el1_dbg+0x64/0x7c
[ 3513.707576] [T1414336] virtio-vmctl: el1h_64_sync_handler+0x40/0xcc
[ 3513.708373] [T1414336] virtio-vmctl: el1h_64_sync+0x68/0x6c
[ 3513.713105] [T1414336] virtio-vmctl: queued_spin_lock_slowpath+0x328/0x480
[ 3513.713972] [T1414336] virtio-vmctl: _raw_spin_lock_irqsave+0x98/0xa8
[ 3513.714783] [T1414336] virtio-vmctl: eint_shutdown+0x40/0x1bc [vhosteint]
[ 3513.717599] [T1414336] virtio-vmctl: vhost_eint_release+0x2c/0x2a8 [vhosteint]
[ 3513.718512] [T1414336] virtio-vmctl: __fput+0xac/0x2a4
[ 3513.719163] [T1414336] virtio-vmctl: ____fput+0x10/0x20
[ 3513.721800] [T1414336] virtio-vmctl: task_work_run+0xd8/0x110
[ 3513.722530] [T1414336] virtio-vmctl: do_exit+0x274/0xae0
[ 3513.723204] [T1414336] virtio-vmctl: do_group_exit+0x70/0x9c
[ 3513.723919] [T1414336] virtio-vmctl: get_signal+0x720/0x85c
[ 3513.724626] [T1414336] virtio-vmctl: do_signal+0xa4/0x24f4
[ 3513.727078] [T1414336] virtio-vmctl: do_notify_resume+0xb4/0x1f0
[ 3513.727835] [T1414336] virtio-vmctl: el0_svc+0x58/0x5c
[ 3513.728483] [T1414336] virtio-vmctl: el0t_64_sync_handler+0x68/0xb4
[ 3513.729272] [T1414336] virtio-vmctl: el0t_64_sync+0x1a4/0x1a8

調用eint->event_list_lock鎖的地方：
1.vhost_eint_create init lock
2.eint_handle_event_from_host()-->vhost_eint_worker()--》eint_submit_event:wake_up_process(eint->worker_pool[idx])；
3.eint_submit_event；-->gpio_eint_interrupt_handler();
4.eint_shutdown()；