From: "Dmitry V. Levin" <ldv@xxxxxxxxxxxx> Date: Thu, 18 Jul 2019 00:59:56 +0300 > So this ended up as commit 7b9afb86b6328f10dc2cad9223d7def12d60e505 > (thanks to Anatoly for bisecting) and introduced a regression: > futex.test from the strace test suite now causes an Oops on sparc64 > in futex syscall. > > Here is a heavily stripped down reproducer: Does not reproduce for me on a T4-2 machine. So this problem might depend on the type of system you are on, I suspect it's one of those "pre-Niagara vs. Niagara and later" situations because that's the dividing line between two set of wildly different TLB and cache management methods. What kind of machine are you on?
