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Use focused KUnit tests to exercise the renderer's internal boundary and composition contracts with synthetic scratch states, including both sibling-helper evaluation orders. Check the exact output and reservation boundaries, including a four-byte octal escape accepted at exact capacity and rejected one byte short. Also verify an unchanged cursor on failure, that bracketed process names and embedded NUL bytes remain data, and that input ellipsis bytes are escaped rather than mistaken for the raw truncation marker. The composition test requires generic trace output helpers. Enable CONFIG_FTRACE and CONFIG_SCHED_TRACER because the latter selects the otherwise-hidden CONFIG_TRACING support required by trace_print_flags_seq(). Use kselftests to exercise the complete tracefs path for both affected filesystem events. A valid path containing 2640 spaces exceeds the scratch output budget. Require its escaped prefix to end in the raw UTF-8 ellipsis while access_rights and blockers remain intact. This division keeps the exact safety contract compiler-independent while proving that real tracepoints preserve their surrounding symbolic fields. The end-to-end assertions fail after a full fix revert with both GCC and Clang, while the composition KUnit test fails if the scratch reserve is removed. Cc: Günther Noack <gnoack@google.com> Link: https://patch.msgid.link/20260907154401.124362-2-mic@digikod.net Signed-off-by: Mickaël Salaün <mic@digikod.net> |
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| .. | ||
| .gitignore | ||
| audit_test.c | ||
| audit.h | ||
| base_test.c | ||
| common.h | ||
| config | ||
| config.um | ||
| fs_bench.c | ||
| fs_test.c | ||
| Makefile | ||
| net_test.c | ||
| ptrace_test.c | ||
| sandbox-and-launch.c | ||
| scoped_abstract_unix_test.c | ||
| scoped_base_variants.h | ||
| scoped_common.h | ||
| scoped_multiple_domain_variants.h | ||
| scoped_signal_test.c | ||
| scoped_test.c | ||
| trace_fs_test.c | ||
| trace_test.c | ||
| trace.h | ||
| true.c | ||
| tsync_test.c | ||
| wait-pipe-sandbox.c | ||
| wait-pipe.c | ||
| wrappers.h | ||