diff options
Diffstat (limited to 'tools/libxc/xc_domain_restore.c')
| -rw-r--r-- | tools/libxc/xc_domain_restore.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/tools/libxc/xc_domain_restore.c b/tools/libxc/xc_domain_restore.c index 9564480651..29af52bac6 100644 --- a/tools/libxc/xc_domain_restore.c +++ b/tools/libxc/xc_domain_restore.c @@ -1434,6 +1434,11 @@ int xc_domain_restore(xc_interface *xch, int io_fd, uint32_t dom, l3tab = (uint64_t *) xc_map_foreign_range(xch, dom, PAGE_SIZE, PROT_READ, ctx->p2m[i]); + if ( l3tab == NULL ) + { + PERROR("xc_map_foreign_range failed (for l3tab)"); + goto out; + } for ( j = 0; j < 4; j++ ) l3ptes[j] = l3tab[j]; @@ -1460,6 +1465,11 @@ int xc_domain_restore(xc_interface *xch, int io_fd, uint32_t dom, l3tab = (uint64_t *) xc_map_foreign_range(xch, dom, PAGE_SIZE, PROT_READ | PROT_WRITE, ctx->p2m[i]); + if ( l3tab == NULL ) + { + PERROR("xc_map_foreign_range failed (for l3tab, 2nd)"); + goto out; + } for ( j = 0; j < 4; j++ ) l3tab[j] = l3ptes[j]; @@ -1630,6 +1640,12 @@ int xc_domain_restore(xc_interface *xch, int io_fd, uint32_t dom, SET_FIELD(ctxt, user_regs.edx, mfn); start_info = xc_map_foreign_range( xch, dom, PAGE_SIZE, PROT_READ | PROT_WRITE, mfn); + if ( start_info == NULL ) + { + PERROR("xc_map_foreign_range failed (for start_info)"); + goto out; + } + SET_FIELD(start_info, nr_pages, dinfo->p2m_size); SET_FIELD(start_info, shared_info, shared_info_frame<<PAGE_SHIFT); SET_FIELD(start_info, flags, 0); @@ -1765,6 +1781,11 @@ int xc_domain_restore(xc_interface *xch, int io_fd, uint32_t dom, /* Restore contents of shared-info page. No checking needed. */ new_shared_info = xc_map_foreign_range( xch, dom, PAGE_SIZE, PROT_WRITE, shared_info_frame); + if ( new_shared_info == NULL ) + { + PERROR("xc_map_foreign_range failed (for new_shared_info)"); + goto out; + } /* restore saved vcpu_info and arch specific info */ MEMCPY_FIELD(new_shared_info, old_shared_info, vcpu_info); |