On Thu, Jan 10, 2019 at 11:21:16PM +0000, Esme wrote: > Attached is a fairly small C repro I did not see any references to > this possible flaw (unchecked MSR access) in relation to > __NR_perf_event_open > > Attached is the config directly extracted from proc. This is the call > stack in relation to the MSR access error (5.0.0-rc1+), I get a very > similar stack running this test case on a stock Ubuntu > "4.18.0-11-generic" (pasted after this one).
> -- Esme > > [ 70.228744] unchecked MSR access error: WRMSR to 0xc0010000 (tried to > write 0x0000020000130076) at rIP: 0xffffffff812dde28 > (native_write_msr+0x8/0x30) That's K7_EVNTSEL0. What kind of hardware are you running this on?
