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[Xen-changelog] [xen-unstable] xentrace: fix bug in t_info size

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Subject: [Xen-changelog] [xen-unstable] xentrace: fix bug in t_info size
From: Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>
Date: Tue, 11 May 2010 03:30:22 -0700
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# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1273479772 -3600
# Node ID 93c5beba9d04d3e8d2522241bad14107433c3121
# Parent  3b6e33ebb57b670a48ad138aecb47cbd32a4e986
xentrace: fix bug in t_info size

t_info size should be in bytes, not pages.  This fixes a bug
that crashes the hypervisor if the total number of all pages
is more than 1024 but less than 2048.

Signed-off-by: George Dunlap <george.dunlap@xxxxxxxxxx>
 xen/common/trace.c |    2 +-
 1 files changed, 1 insertion(+), 1 deletion(-)

diff -r 3b6e33ebb57b -r 93c5beba9d04 xen/common/trace.c
--- a/xen/common/trace.c        Mon May 10 09:21:58 2010 +0100
+++ b/xen/common/trace.c        Mon May 10 09:22:52 2010 +0100
@@ -340,7 +340,7 @@ int tb_control(xen_sysctl_tbuf_op_t *tbc
     case XEN_SYSCTL_TBUFOP_get_info:
         tbc->evt_mask   = tb_event_mask;
         tbc->buffer_mfn = t_info ? virt_to_mfn(t_info) : 0;
-        tbc->size = T_INFO_PAGES;
+        tbc->size = T_INFO_PAGES * PAGE_SIZE;
     case XEN_SYSCTL_TBUFOP_set_cpu_mask:
         xenctl_cpumap_to_cpumask(&tb_cpu_mask, &tbc->cpu_mask);

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