Messages in this thread | | | Date | Fri, 11 Jul 2014 14:02:39 +0200 | From | Jiri Olsa <> | Subject | Re: [PATCH 0/5] perf: Fix tracepoint events permissions check |
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On Fri, Jul 11, 2014 at 01:56:17PM +0200, Jiri Olsa wrote: > hi, > sending fix for bug reported by Alexander Yarygin in here: > http://marc.info/?l=linux-kernel&m=140475133707722&w=2 > > The main problem was, that the event_init tracepoint callback > checked permission of the 'current' task instead of the event > owner task. > > While this is ok for perf_event_open syscall check, it is wrong > once event_init is called during fork to create child events. > In this case the permission of the forked task is checked instead > of the owner task of the parent event.
also available in here: git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git perf/core_perm
jirka
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