From mboxrd@z Thu Jan  1 00:00:00 1970
From: Radim =?utf-8?Q?Krcm=C3=A1r?= <rkrcmar@redhat.com>
Subject: Re: [PATCH v3 2/4] KVM: x86: Use vector-hashing to deliver
 lowest-priority interrupts
Date: Mon, 25 Jan 2016 16:20:41 +0100
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Cc: "Wu, Feng" <feng.wu@intel.com>,
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To: Paolo Bonzini <pbonzini@redhat.com>
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2016-01-25 13:25+0100, Paolo Bonzini:
> On 22/01/2016 15:01, Radim Krcm=C3=A1r wrote:
>>>         for (i =3D 0; i <=3D mod; i++) {
>>>                 idx =3D find_next_bit(bitmap, bitmap_size, idx + 1)=
;
>>>                 BUG_ON(idx =3D=3D bitmap_size);
>>>         }
>=20
> WARN_ON, not BUG_ON.

Callers don't check the return value for an error, because every error
is a BUG now.  I think that we should check if we return bitmap_size.
(Current paths could dereference NULL or throw unrelated warnings.)

Also, WARN_ON_ONCE?