Annotate the pointer field 'regs' in 'struct dfx_diff_registers' with the '__counted_by_ptr' attribute, referencing the 'reg_len' member which holds the element count of the allocated memory.
In 'drivers/crypto/hisilicon/debugfs.c', the 'dfx_regs_init' function allocates the 'diff_regs' array and initializes each element's 'regs' pointer after setting its 'reg_len'. Since 'reg_len' is set before 'regs' is assigned, the compiler's bounds sanitizer can correctly associate the pointer with its allocated size. Cc: [email protected] Assisted-by: LLM Signed-off-by: Bill Wendling <[email protected]> --- include/linux/hisi_acc_qm.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/hisi_acc_qm.h b/include/linux/hisi_acc_qm.h index 8dc49fa2123b..f2885d60b468 100644 --- a/include/linux/hisi_acc_qm.h +++ b/include/linux/hisi_acc_qm.h @@ -196,7 +196,7 @@ struct qm_dev_dfx { }; struct dfx_diff_registers { - u32 *regs; + u32 *regs __counted_by_ptr(reg_len); u32 reg_offset; u32 reg_len; }; -- 2.55.0.1082.g2b9226bbc0-goog
