selftests/bpf: Uprobe tests should verify param/return values

2022-04-07T18:42:51Z

uprobe/uretprobe tests don't do any validation of arguments/return values, and without this we can't be sure we are attached to the right function, or that we are indeed attached to a uprobe or uretprobe. To fix this record argument and return value for auto-attached functions and ensure these match expectations. Also need to filter by pid to ensure we do not pick up stray malloc()s since auto-attach traces libc system-wide. Suggested-by: Andrii Nakryiko Signed-off-by: Alan Maguire Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/1649245431-29956-4-git-send-email-alan.maguire@oracle.com

selftests/bpf: Add tests for uprobe auto-attach via skeleton

2022-04-04T02:56:01Z

tests that verify auto-attach works for function entry/return for local functions in program and library functions in a library. Signed-off-by: Alan Maguire Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/1648654000-21758-6-git-send-email-alan.maguire@oracle.com

kernel/tools/testing/selftests/bpf/progs/test_uprobe_autoattach.c, branch linux-6.2.y

selftests/bpf: Uprobe tests should verify param/return values

selftests/bpf: Add tests for uprobe auto-attach via skeleton