[Xen-ia64-devel] [PATCH] Avoid double free of VHPT for HVM domain

[Masaki Kanno <kanno.masaki@xxxxxxxxxxxxxx>]

Hi,

If vTLB area is not able to allocate with shortage of domheap, 
Xen does a panic for double free of VHPT. 

At first:
  vmx_final_setup_guest()
    -> init_domain_tlb()
         -> free_domain_vhpt()

At second:
  free_domain()
    -> vcpu_destroy()
         -> vmx_relinquish_vcpu_resources()
              -> free_domain_tlb()
                   -> free_domain_vhpt()

This patch avoids double free of VHPT by clearing v->arch.vhpt.hash 
in free_domain_vhpt().

Signed-off-by: Masaki Kanno <kanno.masaki@xxxxxxxxxxxxxx>

Best regards,
 Kan

Attachment: avoid_double_free_of_VHPT.patch
Description: Binary data

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