The bpf_timer overwriting crash test will cause bpf selftest build fail on the stable 5.15 tree with: progs/timer_crash.c:8:19: error: field has incomplete type 'struct bpf_timer' struct bpf_timer timer; ^ /home/ubuntu/linux/tools/testing/selftests/bpf/tools/include/bpf/bpf_helper_defs.h:39:8: note: forward declaration of 'struct bpf_timer' struct bpf_timer; ^ 1 error generated. Test shows this can only be built with 5.17 and newer kernels. Let's revert it for the 5.15 tree. Po-Hsu Lin (1): Revert "selftests/bpf: Add test for bpf_timer overwriting crash" .../testing/selftests/bpf/prog_tests/timer_crash.c | 32 ------------- tools/testing/selftests/bpf/progs/timer_crash.c | 54 ---------------------- 2 files changed, 86 deletions(-) delete mode 100644 tools/testing/selftests/bpf/prog_tests/timer_crash.c delete mode 100644 tools/testing/selftests/bpf/progs/timer_crash.c -- 2.7.4