On Mon, Jan 23, 2023 at 09:40:03AM -0800, Paul E. McKenney wrote: > I looked for that, but didn't find it, so thank you! > > (Yes, I should have used dpkg, but I was lazy.) > > Except that when I install Ubuntu 20.04's version, I get this: > > ------------------------------------------------------------------------ > > $ sudo make run-user > MKDIR sysroot/x86/include > make[1]: Entering directory '/home/git/linux-rcu/tools/include/nolibc' > make[2]: Entering directory '/home/git/linux-rcu' > make[2]: Leaving directory '/home/git/linux-rcu' > make[2]: Entering directory '/home/git/linux-rcu' > INSTALL /home/git/linux-rcu/tools/testing/selftests/nolibc/sysroot/sysroot/include > make[2]: Leaving directory '/home/git/linux-rcu' > make[1]: Leaving directory '/home/git/linux-rcu/tools/include/nolibc' > CC nolibc-test > 32 gettimeofday_null = -1 EFAULT [FAIL] > See all results in /home/git/linux-rcu/tools/testing/selftests/nolibc/run.out > > ------------------------------------------------------------------------ > > I have attached run.out. > > In contrast, with my hand-built qemu-x86_64, all tests passed. > > This might be just a version-related bug, but figured I should let you > guys know. This is an interesting bug. I'm a bit reluctant to say that this is a qemu bug. But I can't reproduce it on my machine. I use qemu that comes from Ubuntu 22.04. FWIW, my qemu version is: $ qemu-x86_64 -version qemu-x86_64 version 6.2.0 (Debian 1:6.2+dfsg-2ubuntu6.6) Copyright (c) 2003-2021 Fabrice Bellard and the QEMU Project developers I'll take a look at that gettimeofday() code and see if we have a bug in it. In meantime, could you send your qemu version info? -- Ammar Faizi
