On Thu, Apr 11, 2024 at 5:42 AM Mark Brown broonie@kernel.org wrote:
On Sat, Apr 06, 2024 at 05:09:51PM +0200, Oleg Nesterov wrote:
Without the commit bcb7ee79029d ("posix-timers: Prefer delivery of signals to the current thread") the test-case fails immediately, the very 1st tick wakes the leader up. Otherwise it quickly succeeds after 100 ticks.
This has landed in -next and is causing warning spam throughout kselftest when built with clang:
/home/broonie/git/bisect/tools/testing/selftests/kselftest.h:435:6: warning: variable 'major' is used uninitialized whenever '||' condition is true [-Wsometimes-uninitialized] if (uname(&info) || sscanf(info.release, "%u.%u.", &major, &minor) != 2) ^~~~~~~~~~~~ /home/broonie/git/bisect/tools/testing/selftests/kselftest.h:438:9: note: uninitialized use occurs here return major > min_major || (major == min_major && minor >= min_minor); ^~~~~ /home/broonie/git/bisect/tools/testing/selftests/kselftest.h:435:6: note: remove the '||' if its condition is always false if (uname(&info) || sscanf(info.release, "%u.%u.", &major, &minor) != 2) ^~~~~~~~~~~~~~~ /home/broonie/git/bisect/tools/testing/selftests/kselftest.h:432:20: note: initialize the variable 'major' to silence this warning unsigned int major, minor; ^ = 0
I hit this one too yesterday and included a fix for it here: https://lore.kernel.org/lkml/20240410232637.4135564-2-jstultz@google.com/
thanks -john