[Xen-changelog] [xen master] xenctx: Clean up stack trace when hypercall_page not in symbol table

[patchbot@xxxxxxx]

commit 26df1850758cdf8b160df31011331a97aa3e5b09
Author:     Don Slutz <Don@xxxxxxxxxxxxxxx>
AuthorDate: Thu Apr 3 15:06:53 2014 -0400
Commit:     Ian Campbell <ian.campbell@xxxxxxxxxx>
CommitDate: Fri Apr 4 09:28:06 2014 +0100

    xenctx: Clean up stack trace when hypercall_page not in symbol table
    
    Before:
    
    Call Trace:
      [<ffffffff8006b2b0>] default_idle+0x29  <--
      [<ffffffff80048d19>] cpu_idle+0x95
      [<ffffffff803e7801>] start_kernel+0x220
      [<0000000000000000>] startup_64+0x80000000
      [<ffffffff803e722f>] x86_64_start_kernel+0x22f
      [<0000000000000000>] startup_64+0x80000000
      [<0000000000000000>] startup_64+0x80000000
      [<0000000000000000>] startup_64+0x80000000
      [<0000000000000000>] startup_64+0x80000000
    
    After:
    
    Call Trace:
      [<ffffffff8006b2b0>] default_idle+0x29  <--
      [<ffffffff80048d19>] cpu_idle+0x95
      [<ffffffff803e7801>] start_kernel+0x220
      [<ffffffff803e722f>] x86_64_start_kernel+0x22f
    
    Signed-off-by: Don Slutz <Don@xxxxxxxxxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
    Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
    Acked-by: George Dunlap <george.dunlap@xxxxxxxxxxxxx>
---
 tools/xentrace/xenctx.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/tools/xentrace/xenctx.c b/tools/xentrace/xenctx.c
index 889f788..134cf55 100644
--- a/tools/xentrace/xenctx.c
+++ b/tools/xentrace/xenctx.c
@@ -85,8 +85,9 @@ static int is_kernel_text(guest_word_t addr)
     if (addr >= kernel_stext &&
         addr <= kernel_etext)
         return 1;
-    if (addr >= kernel_hypercallpage &&
-        addr <= kernel_hypercallpage + 4096)
+    if ( kernel_hypercallpage &&
+         (addr >= kernel_hypercallpage &&
+          addr <= kernel_hypercallpage + 4096) )
         return 1;
     if (addr >= kernel_sinittext &&
         addr <= kernel_einittext)
--
generated by git-patchbot for /home/xen/git/xen.git#master

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