On 04/28/2018 12:05 AM, Ingo Molnar wrote: > In the above kernel that was missing the PROT_EXEC fix I was repeatedly > running > the 64-bit and 32-bit testcases as non-root and as root as well, until I got > a > hang in the middle of a 32-bit test running as root: > > test 7 PASSED (iteration 19) > test 8 PASSED (iteration 19) > test 9 PASSED (iteration 19) > > < test just hangs here >
For the hang, there is a known issue with the use of printf() in the signal handler and a resulting deadlock. I *thought* there was a patch merged to fix this from Ram Pai or one of the other IBM folks.
