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From: Kip Macy <kip.macy@gmail.com>
To: xen-devel <xen-devel@lists.xensource.com>
Subject: [PATCH] xc_ptrace.c fix
Date: Sat, 2 Jul 2005 18:07:59 -0700	[thread overview]
Message-ID: <b1fa291705070218077e176e28@mail.gmail.com> (raw)

Could you please apply the following trivial patch (yes I know, gmail
screws up whitespace). It fixes a crash in the gdbserver that can be
hit when debugging linux.


--- a/tools/libxc/xc_ptrace.c   Fri Jul  1 21:25:45 2005
+++ b/tools/libxc/xc_ptrace.c   Sun Jul  3 01:05:21 2005
@@ -200,7 +200,7 @@
                                             pde_phys[cpu] >>
PAGE_SHIFT)) == NULL)
            goto error_out;
     }
-    if ((page = pde_virt[cpu][vtopti(va)]) == 0) /* logical address */
+    if ((pde_virt[cpu] == NULL) || (page = pde_virt[cpu][vtopti(va)])
== 0) /* logical address */
        goto error_out;
     if (ctxt[cpu].flags & VGCF_VMX_GUEST)
         page = page_array[page >> PAGE_SHIFT] << PAGE_SHIFT;

             reply	other threads:[~2005-07-03  1:07 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-07-03  1:07 Kip Macy [this message]
2005-07-03  8:30 ` [PATCH] xc_ptrace.c fix Keir Fraser

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