On Fri, 2016-08-05 at 19:40 -0700, Guenter Roeck wrote: > On 08/05/2016 04:26 PM, Ben Hutchings wrote: > > > > On Sun, 2016-07-31 at 10:34 -0700, Guenter Roeck wrote: > > > > > > > > > Now I get a crash with the nosmp qemu test, and > > > > Did you work out what introduced that? > > > > Bisect says: > > # bad: [c85164130167a51006876477e6b4044312960478] ecryptfs: don't > allow mmap when the lower fs doesn't support it > # good: [c5d5c18b211dabbfac73670c65dfa4243800adf7] Linux 3.2.81 > git bisect start 'HEAD' 'v3.2.81' > # bad: [0d5b7d090ee63c7ab5530fea29beffe989ae385a] parisc: Fix > pagefault crash in unaligned __get_user() call > git bisect bad 0d5b7d090ee63c7ab5530fea29beffe989ae385a > # bad: [db17a77a32fe7703a433f428f65f28fddb20d5ba] MIPS: Sync icache & > dcache in set_pte_at > git bisect bad db17a77a32fe7703a433f428f65f28fddb20d5ba > # good: [9f4faf23b3c3d719a1005364ac3cca8cb1ca07ca] char: Drop bogus > dependency of DEVPORT on !M68K > git bisect good 9f4faf23b3c3d719a1005364ac3cca8cb1ca07ca > # good: [180309d63478b762234b229abf37b0ed4d95fef7] MIPS: Adjust > set_pte() SMP fix to handle R10000_LLSC_WAR > git bisect good 180309d63478b762234b229abf37b0ed4d95fef7 > # good: [dcbaa9382ed2ded2de553633e58791d057e76ad2] powerpc/mm/hash64: > Factor out hash preload psize check > git bisect good dcbaa9382ed2ded2de553633e58791d057e76ad2 > # good: [ad1e677bf950f3943e8a3cdd546b2c6202ea7ed4] sched/loadavg: Fix > loadavg artifacts on fully idle and on fully loaded systems > git bisect good ad1e677bf950f3943e8a3cdd546b2c6202ea7ed4 > # first bad commit: [db17a77a32fe7703a433f428f65f28fddb20d5ba] MIPS: > Sync icache & dcache in set_pte_at > > After reverting that patch, the problem is gone. > > Turns out 3.16 is affected by the same problem, and reverting the > patch there fixes it as well. Oh well, then I'll revert this and the follow-up. Ben. -- Ben Hutchings Beware of bugs in the above code; I have only proved it correct, not tried it. - Donald Knuth
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