Prepare for the coming implementation by GCC and Clang of the __counted_by attribute. Flexible array members annotated with __counted_by can have their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family functions). As found with Coccinelle[1], add __counted_by for struct tcmu_tmr. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Bodo Stroesser <bostroesser@xxxxxxxxx> Cc: "Martin K. Petersen" <martin.petersen@xxxxxxxxxx> Cc: linux-scsi@xxxxxxxxxxxxxxx Cc: target-devel@xxxxxxxxxxxxxxx Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx> --- drivers/target/target_core_user.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/target/target_core_user.c b/drivers/target/target_core_user.c index 22cc6cac0ba2..7eb94894bd68 100644 --- a/drivers/target/target_core_user.c +++ b/drivers/target/target_core_user.c @@ -201,7 +201,7 @@ struct tcmu_tmr { uint8_t tmr_type; uint32_t tmr_cmd_cnt; - int16_t tmr_cmd_ids[]; + int16_t tmr_cmd_ids[] __counted_by(tmr_cmd_cnt); }; /* -- 2.34.1
