diff options
| author | Petr Matousek <[email protected]> | 2015-03-11 12:16:09 +0100 |
|---|---|---|
| committer | Paolo Bonzini <[email protected]> | 2015-03-30 16:40:07 +0200 |
| commit | 2dccb4cdbf8fd4cb1d779a6f7ddd66d193bb5805 (patch) | |
| tree | fa2ca1d0b2df5ac8e31a1bc1c47be2673cce15eb | |
| parent | 65844bb0a7861eefa3ce44cd788163ecc4e14f2d (diff) | |
kvm: x86: i8259: return initialized data on invalid-size read
If data is read from PIC with invalid access size, the return data stays
uninitialized even though success is returned.
Fix this by always initializing the data.
Signed-off-by: Petr Matousek <[email protected]>
Reported-by: Nadav Amit <[email protected]>
Message-Id: <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
| -rw-r--r-- | arch/x86/kvm/i8259.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kvm/i8259.c b/arch/x86/kvm/i8259.c index cc31f7c06d3d..9541ba34126b 100644 --- a/arch/x86/kvm/i8259.c +++ b/arch/x86/kvm/i8259.c @@ -507,6 +507,7 @@ static int picdev_read(struct kvm_pic *s, return -EOPNOTSUPP; if (len != 1) { + memset(val, 0, len); pr_pic_unimpl("non byte read\n"); return 0; } |