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linux/tools/testing
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Emanuele Rocca 3fc66a1033
kselftest/coredump: reintroduce null pointer dereference 
Commit 673a55cc49 replaced the null pointer dereference used in
crashing_child() with __builtin_trap to address the following LLVM warnings:

 coredump_test_helpers.c:59:6: warning: indirection of non-volatile null pointer will be deleted, not trap [-Wnull-dereference]
 coredump_test_helpers.c:59:6: note: consider using __builtin_trap() or qualifying pointer with 'volatile'

All coredump tests expect crashing_child() to result in a SIGSEGV. However, the
behavior of __builtin_trap is architecture-dependent. On x86 it yields SIGILL,
on aarch64 SIGTRAP. Given that neither of those signals are SIGSEGV, both
coredump_socket_test and coredump_socket_protocol_test are currently failing:

 get_pidfd_info: mask=0xd7, coredump_mask=0x5, coredump_signal=5
 socket_coredump_signal_sigsegv: coredump_signal=5, expected SIGSEGV=11

Qualify the pointer with volatile instead of calling __builtin_trap to fix the
tests.

Signed-off-by: Emanuele Rocca <emanuele.rocca@arm.com>
Link: https://patch.msgid.link/ab2kI0PI_Vk6bU88@NH27D9T0LF
Reviewed-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
2026-03-23 16:27:10 +01:00
..
crypto/chacha20-s390 crypto: lib/chacha - strongly type the ChaCha state 2025-05-12 13:32:53 +08:00
cxl cxl changes for v7.0 2026-02-12 16:33:05 -08:00
fault-injection
ktest ktest.pl: Fix uninitialized var in config-bisect.pl 2025-12-03 18:25:18 -05:00
kunit kunit: add bash completion 2026-01-20 11:17:52 -07:00
memblock memblock: drop redundant 'struct page *' argument from memblock_free_pages() 2026-01-09 11:53:51 +02:00
nvdimm tools/testing/nvdimm: Use per-DIMM device handle 2025-11-03 16:47:13 -06:00
radix-tree idr: fix idr_alloc() returning an ID out of range 2025-12-23 11:23:11 -08:00
rbtree
scatterlist mm: remove nth_page() 2025-09-21 14:22:10 -07:00
selftests kselftest/coredump: reintroduce null pointer dereference 2026-03-23 16:27:10 +01:00
shared tools: Update context analysis macros in compiler_types.h 2026-01-28 09:25:45 +01:00
vma tools/testing/vma: add VMA userland tests for VMA flag functions 2026-02-12 15:42:59 -08:00
vsock vsock/test: add stream TX credit bounds test 2026-01-22 15:41:33 +01:00