On Tue, Sep 01, 2015 at 08:28:38AM -0400, Hal Rosenstock wrote:
> From 0e8341980ca7133fe0a472fddc1c622f766b8f8e Mon Sep 17 00:00:00 2001
> From: Dan Ben Yosef <[email protected]>
> Date: Mon, 31 Aug 2015 10:49:04 +0300
>
> perfquery -T (print Extended Speed Counters) times out on nodes
> supporting RS_FEC capability.
>
> Before sending ExtendedSpeedCounters PerfMgt GMP, perfquery sends
> PortInfoExtended SMP to get CapMask and FECModeActive fields.
> Upon reception of PortInfoExtended SMP, fec_mode_active field is
> erroneously decoded to 16 bit buffer instead of 32 bit buffer.
> As a result, memory corruption occurs and portid.dlid field is set to 0,
> so that ExtendedSpeedCounters GMP is sent to wrong destination.
>
> Signed-off-by: Dan Ben Yosef <[email protected]>
> Signed-off-by: Hal Rosenstock <[email protected]>
Thanks applied,
Ira
> ---
> src/perfquery.c | 4 ++--
> 1 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/src/perfquery.c b/src/perfquery.c
> index 46451ef..9e3a307 100644
> --- a/src/perfquery.c
> +++ b/src/perfquery.c
> @@ -469,7 +469,7 @@ static uint8_t is_rsfec_mode_active(ib_portid_t * portid,
> int port,
> uint16_t cap_mask)
> {
> uint8_t data[IB_SMP_DATA_SIZE] = { 0 };
> - uint16_t fec_mode_active = 0;
> + uint32_t fec_mode_active = 0;
> uint32_t pie_capmask = 0;
> if (cap_mask & IS_PM_RSFEC_COUNTERS_SUP) {
> if (!is_port_info_extended_supported(portid, port, srcport)) {
> @@ -486,7 +486,7 @@ static uint8_t is_rsfec_mode_active(ib_portid_t * portid,
> int port,
> &fec_mode_active);
> if((pie_capmask &
> CL_NTOH32(IB_PORT_EXT_CAP_IS_FEC_MODE_SUPPORTED)) &&
> - (CL_NTOH16(IB_PORT_EXT_RS_FEC_MODE_ACTIVE) ==
> fec_mode_active))
> + (CL_NTOH16(IB_PORT_EXT_RS_FEC_MODE_ACTIVE) ==
> (fec_mode_active & 0xffff)))
> return 1;
> }
>
> --
> 1.7.8.2
>
--
To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
