CVS commit: src/tests/kernel

["Kamil Rytarowski" <kamil%netbsd.org@localhost>]

Module Name:    src
Committed By:   kamil
Date:           Tue May 22 04:32:56 UTC 2018

Modified Files:
        src/tests/kernel: h_segv.c t_trapsignal.sh

Log Message:
Extend ATF tests in t_trapsignal.sh to verify software breakpoint traps

There are at least four types of SIGTRAP events:
 - software/hardware single step (trace trap)
 - software breakpoint
 - hardware breakpoint/watchpoint
 - kernel event (exec, fork, vfork, vfork-done, lwp-create, lwp-exit)

A program can execute software breakpoint without the context of being
traced and this is a regular crash signal emitting SIGTRAP (TRAP_BRKPT).

Rename original trap_* tests (trap_simple, trap_handle, trap_mask,
trap_handle_recurse and trap_ignore) to segv_* tests and restrict them for
SIGSEGV.

Add new tests: trap_* testing the same scenarios as segv_ ones, however
verifying the software breakpoint trap (SIGTRAP).

Keep the original name of h_segv.c, and extend it for software breakpoint
events.

The purpose of these tests is to verify SIGTRAP kernel paths without the
ptrace(2) context.

All tests pass.

Sponsored by <The NetBSD Foundation>


To generate a diff of this commit:
cvs rdiff -u -r1.3 -r1.4 src/tests/kernel/h_segv.c
cvs rdiff -u -r1.2 -r1.3 src/tests/kernel/t_trapsignal.sh

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.