This patchset adds fault injection support for btrfs_data_csum_ok, enabling controlled simulation of checksum mismatches to test btrfs silent data corruption detection and reporting paths.
The first patch extends the error injection framework with a new type, EI_ETYPE_FALSE, which allows bool-returning functions to be overridden with a false return value directly. The second patch marks btrfs_data_csum_ok with ALLOW_ERROR_INJECTION using this new type. The third patch adds a parent field to fei_attr to allow fault injection on a function only when called from a specific parent function. Song Chen (3): error-injection: Introduce EI_ETYPE_FALSE for fail_function btrfs: Allow error injection on btrfs_data_csum_ok error-injection: Introduce parent in fei_attr arch/arm/lib/error-inject.c | 6 ++ arch/arm64/lib/error-inject.c | 6 ++ arch/csky/lib/error-inject.c | 6 ++ arch/loongarch/lib/error-inject.c | 6 ++ arch/powerpc/lib/error-inject.c | 6 ++ arch/riscv/lib/error-inject.c | 6 ++ arch/s390/lib/error-inject.c | 6 ++ arch/x86/lib/error-inject.c | 6 ++ fs/btrfs/inode.c | 1 + include/asm-generic/error-injection.h | 6 ++ kernel/fail_function.c | 98 ++++++++++++++++++++++++++- 11 files changed, 152 insertions(+), 1 deletion(-) --- changelog: v1 --- v2: Add a parent field to struct fei_attr. -- 2.43.0
