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To: David Howells <dhowells@redhat.com>
From: Hillf Danton <hdanton@sina.com>
Subject: Re: Oops (request_key_auth_describe) while running cve-2016-7042
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Date: Sat, 31 Aug 2019 09:20:34 +0800
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David Howells <dhowells@redhat.com> wrote:
>> 1, callee has no pre defined duty to help caller in general; they should=
 not
>> try to do anything, however, to help their callers in principle due to
>> limited info on their hands IMO.
>
> Ah, no.  It's entirely reasonable for an API to specify that one of its
> methods will be called with one or more locks held - and that the method =
must
> be aware of this and may make use of this.
>
Fair and clear.

Thanks
Hillf



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--></style></head><body lang=3DZH-CN link=3Dblue vlink=3D"#954F72"><div cla=
ss=3DWordSection1><p class=3DMsoNormal><span lang=3DEN-US>David Howells &lt=
;dhowells@redhat.com&gt; wrote:<o:p></o:p></span></p><p class=3DMsoNormal><=
span lang=3DEN-US>&gt;&gt; 1, callee has no pre defined duty to help caller=
 in general; they should not</span></p><p class=3DMsoNormal><span lang=3DEN=
-US>&gt;&gt; try to do anything, however, to help their callers in principl=
e due to</span></p><p class=3DMsoNormal><span lang=3DEN-US>&gt;&gt; limited=
 info on their hands IMO.</span></p><p class=3DMsoNormal><span lang=3DEN-US=
>&gt;<o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US>&g=
t; Ah, no.=C2=A0 It's entirely reasonable for an API to specify that one of=
 its</span></p><p class=3DMsoNormal><span lang=3DEN-US>&gt; methods will be=
 called with one or more locks held - and that the method must</span></p><p=
 class=3DMsoNormal><span lang=3DEN-US>&gt; be aware of this and may make us=
e of this.</span></p><p class=3DMsoNormal><span lang=3DEN-US>&gt;<o:p>&nbsp=
;</o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US>Fair and clear.</=
span></p><p class=3DMsoNormal><span lang=3DEN-US><o:p>&nbsp;</o:p></span></=
p><p class=3DMsoNormal><span lang=3DEN-US>Thanks</span></p><p class=3DMsoNo=
rmal><span lang=3DEN-US>Hillf</span></p><p class=3DMsoNormal><span lang=3DE=
N-US><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span class=3DDefault=
FontHxMailStyle><span lang=3DEN-US><o:p>&nbsp;</o:p></span></span></p></div=
></body></html>=

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