commit: 44009105081b51417f311f4c3be0061870b6b8ed
From: Dan Carpenter <dan.carpen...@oracle.com>
Date: Wed, 10 Oct 2012 10:18:35 +0300
Subject: oprofile, x86: Fix wrapping bug in op_x86_get_ctrl()
The "event" variable is a u16 so the shift will always wrap to zero
making the line a no-op.
Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>
Cc: <stable@vger.kernel.org> v2.6.32..
Signed-off-by: Robert Richter <robert.rich...@amd.com>
---
arch/x86/oprofile/nmi_int.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/x86/oprofile/nmi_int.c b/arch/x86/oprofile/nmi_int.c
index 26b8a85..48768df 100644
--- a/arch/x86/oprofile/nmi_int.c
+++ b/arch/x86/oprofile/nmi_int.c
@@ -55,7 +55,7 @@ u64 op_x86_get_ctrl(struct op_x86_model_spec const *model,
val |= counter_config->extra;
event &= model->event_mask ? model->event_mask : 0xFF;
val |= event & 0xFF;
- val |= (event & 0x0F00) << 24;
+ val |= (u64)(event & 0x0F00) << 24;
return val;
}
--
1.7.3.4
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