[LTP] [PATCH v10 0/3] coredump testing suite

[Andrea Cervesato]

Add a simple coredump01 test that simulate a coredump and verify that it
actually works. This is a small coverage that is missing inside LTP
testing suite.

Add a coredump02 test that verifies ELF data after a coredump.

Signed-off-by: Andrea Cervesato <andrea.cervesato@suse.com>
---
Changes in v10:
- add kernel-doc documentation for SAFE_FILE_VPRINTF()
- fix checkpatch formatting warnings in SAFE_FILE_VPRINTF() headers
- use TST_EXP_EQ_STR() to compare executable name in coredump02
- Link to v9: https://lore.kernel.org/20260909-coredump-v9-0-6b0ee752f57e@suse.com

Changes in v9:
- add SAFE_FILE_VPRINTF() helper in the test library
- factor out shared test logic into coredump_common.h
- use SAFE_FILE_VPRINTF() in set_pattern() to avoid intermediate buffers
- use struct tcase array for test case dispatch in coredump01
- return early in coredump01 if core file is missing before parsing ELF
- document root requirement in coredump02 description
- assert exactly one PT_NOTE segment in coredump02
- validate file bounds for PT_LOAD segments in coredump02
- use TST_EXP_EQ_STRN() to compare executable name in coredump02
- copy unaligned note descriptors to local stack structs to ensure 8-byte alignment
- Link to v8: https://lore.kernel.org/20260908-coredump-v8-0-591f96004543@suse.com

Changes in v8:
- check PT_LOAD data
- Link to v7: https://lore.kernel.org/20260904-coredump-v7-0-a32b7ca1acea@suse.com

Changes in v7:
- define a common header for the testing suite
- update commit message for coredump02
- Link to v6: https://lore.kernel.org/20260904-coredump-v6-0-b8e3947cc646@suse.com

Changes in v6:
- coredump01 check Elf
- add coredump02 test for Elf validation
- Link to v5: https://lore.kernel.org/20260903-coredump-v5-1-2ea86fa29107@suse.com

Changes in v5:
- resolve path from root for helper
- Link to v4: https://lore.kernel.org/20260902-coredump-v4-1-3f511ea1c96a@suse.com

Changes in v4:
- read back core_pattern after writing and abort with TBROK on mismatch
- read CONFIG_STATIC_USERMODEHELPER once in setup() and cache the result
- remove namespace visibility scaffolding and skip logic from verify_pipe_pattern()
- resolve helper path with tst_get_path() instead of /proc/self/exe readlink
- Link to v3: https://lore.kernel.org/20260824-coredump-v3-1-6429da674718@suse.com

Changes in v3:
- check for CONFIG_COREDUMP=y
- Link to v2: https://lore.kernel.org/20260824-coredump-v2-1-42428acf5216@suse.com

Changes in v2:
- fix CI agent spotted errors
- Link to v1: https://lore.kernel.org/20260820-coredump-v1-1-7ce51603cefb@suse.com

To: Linux Test Project <ltp@lists.linux.it>

---
Andrea Cervesato (3):
      lib: Add SAFE_FILE_VPRINTF()
      coredump01: New core_pattern specifiers test
      coredump02: Verify ELF structure and notes

 include/safe_file_ops_fn.h                    |   6 +
 include/tst_safe_file_ops.h                   |  14 ++
 lib/safe_file_ops.c                           |   2 +-
 runtest/kernel_misc                           |   2 +
 testcases/kernel/Makefile                     |   1 +
 testcases/kernel/coredump/.gitignore          |   3 +
 testcases/kernel/coredump/Makefile            |   7 +
 testcases/kernel/coredump/coredump01.c        | 162 +++++++++++++++++++++
 testcases/kernel/coredump/coredump01_helper.c |  73 ++++++++++
 testcases/kernel/coredump/coredump02.c        | 196 ++++++++++++++++++++++++++
 testcases/kernel/coredump/coredump_common.h   |  52 +++++++
 11 files changed, 517 insertions(+), 1 deletion(-)
---
base-commit: 043bdc49af410f55ece6f61abcdaba7d9580f86a
change-id: 20260820-coredump-22fc731bde08

Best regards,
--  
Andrea Cervesato <andrea.cervesato@suse.com>