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[KFTF] stacked changes onto master #5

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1e0587e
Add simple configuration for kftf module that is built with kernel
Jun 18, 2025
43dc893
kftf: Add init and exit functions to module
Jun 18, 2025
42d6acc
kftf: simple sysfs that accepts a struct for a single function and the
Jun 18, 2025
4a35a64
kftf: allow tests with macro definitions in .kftf section of binary.
Jun 20, 2025
e8992cb
kftf: fixx sizeof check so that it checks against the provided type.
Jun 23, 2025
d7adb90
kftf: add metadata file per fuzzed function - this contains the name of
Jun 23, 2025
ca5ba48
move int_sqrt test out of kftf_tests file and into the math source
Jun 23, 2025
96ae8d5
kftf: address PR comments and make the FUZZ_TEST interface a lot more
Jun 23, 2025
ece3042
kftf: update include block so that the relative include (kftf_tests.h)
Jun 23, 2025
07bfafa
delete unused file kftf_simple_fuzzer
Jun 23, 2025
0c5cd7e
kftf: per test-case input buffer with mutex
Jun 23, 2025
a4bb002
kftf: update kftf_fuzzable test
Jun 23, 2025
0bddc3f
kftf: add some comments to module main file and kftf header file
Jun 25, 2025
5971467
kftf: replace static test cases buffer with kmalloc'd one.
Jun 25, 2025
d799f5c
kftf: replace input buffers for callback with dynamically allocated
Jul 1, 2025
aae72ff
kftf: replace heap allocated input buffer with function-local stack
Jul 1, 2025
72e3dec
kftf: fix bug in input reading logic.
Jul 1, 2025
6673d6f
kftf: work in progress on domain constraints. Need to see about exposing
Jul 3, 2025
95a0a01
kftf: allow for range constraints by expanding constraint struct.
Jul 6, 2025
581f240
kftf: move some stuff around and enforce 64 byte alignment of KFuzzTest
Jul 6, 2025
a83dee7
kftf: add annotations macros to express field types (for example
Jul 8, 2025
4a7f93e
kftf: add test case example using annotations
Jul 8, 2025
ce561e5
kftf: remove int_sqrt test which is no longer really needed, added
Jul 9, 2025
006c357
kftf: remove some prints from write_input_callback, update test case to
Jul 11, 2025
8f89c46
kftf: introduce new buffer for payload that provides alignment
Jul 14, 2025
8d95315
kftf: harden binary input parsing
Jul 15, 2025
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17 changes: 17 additions & 0 deletions arch/x86/kernel/vmlinux.lds.S
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Original file line number Diff line number Diff line change
Expand Up @@ -112,6 +112,21 @@ ASSERT(__relocate_kernel_end - __relocate_kernel_start <= KEXEC_CONTROL_CODE_MAX
#else
#define KEXEC_RELOCATE_KERNEL
#endif

#define KFTF_TABLE \
. = ALIGN(PAGE_SIZE); \
__kftf_test_case_start = .; \
KEEP(*(.kftf_test)); \
__kftf_test_case_end = .; \
. = ALIGN(PAGE_SIZE); \
__kftf_constraint_start = .; \
KEEP(*(.kftf_constraint)); \
__kftf_constraint_end = .; \
. = ALIGN(PAGE_SIZE); \
__kftf_annotation_start = .; \
KEEP(*(.kftf_annotation)); \
__kftf_annotation_end = .; \

PHDRS {
text PT_LOAD FLAGS(5); /* R_E */
data PT_LOAD FLAGS(6); /* RW_ */
Expand Down Expand Up @@ -199,6 +214,8 @@ SECTIONS
CONSTRUCTORS
KEXEC_RELOCATE_KERNEL

KFTF_TABLE

/* rarely changed data like cpu maps */
READ_MOSTLY_DATA(INTERNODE_CACHE_BYTES)

Expand Down
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