Messages in this thread | | | Date | Tue, 12 Jan 2016 13:08:15 +0000 | From | One Thousand Gnomes <> | Subject | Re: [RFC] perf record: missing buildid for callstack modules |
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> And we cannot, at mmap() time, 'assume' the file is ELF and try prodding > into it to find a buildid or whatnot.
And you cannot at any time assume that something like NFS won't change the page contents under you. In fact it's valid (but completely insane) to use MAP_DISCARD to throw away part of your program and page it back in again so that a daemon on the other side of the NFS can change the code you are executing 8)
Alan
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