[DTrace-devel] [PATCH] Do not report an address value for BADADDR faults with illval -1

[Eugene Loh]

Reviewed-by: Eugene Loh <eugene.loh at oracle.com>

On 3/31/22 1:35 AM, Kris Van Hees via DTrace-devel wrote:
> This patch allows code to pass -1 as illval to a BADADDR fault to
> surpress reporting an address.
>
> Signed-off-by: Kris Van Hees <kris.van.hees at oracle.com>
> ---
>   libdtrace/dt_handle.c | 3 +++
>   1 file changed, 3 insertions(+)
>
> diff --git a/libdtrace/dt_handle.c b/libdtrace/dt_handle.c
> index 433ce451..bdc0365c 100644
> --- a/libdtrace/dt_handle.c
> +++ b/libdtrace/dt_handle.c
> @@ -179,12 +179,15 @@ dt_handle_err(dtrace_hdl_t *dtp, dtrace_probedata_t *data)
>   
>   	switch (err.dteda_fault) {
>   	case DTRACEFLT_BADADDR:
> +		if ((int64_t)err.dteda_addr == -1)
> +			goto no_addr;
>   	case DTRACEFLT_BADALIGN:
>   	case DTRACEFLT_BADSTACK:
>   		sprintf(details, " (0x%llx)", (u_longlong_t)err.dteda_addr);
>   		break;
>   
>   	default:
> +no_addr:
>   		details[0] = 0;
>   	}
>