Re: [PATCH] iscsi-target: Fix CmdSN comparison (use cmd->cmd_sn instead of cmd->stat_sn)

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On Mon, 2013-01-07 at 11:45 -0800, Roland Dreier wrote:
> From: Roland Dreier <roland@xxxxxxxxxxxxxxx>
> 
> Commit 64c13330a389 ("iscsi-target: Fix bug in handling of ExpStatSN
> ACK during u32 wrap-around") introduced a bug where we compare the
> wrong SN against our ExpCmdSN.
> 
> Reported-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
> Signed-off-by: Roland Dreier <roland@xxxxxxxxxxxxxxx>
> ---
>  drivers/target/iscsi/iscsi_target_erl2.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/target/iscsi/iscsi_target_erl2.c b/drivers/target/iscsi/iscsi_target_erl2.c
> index 9ac4c151..ba6091b 100644
> --- a/drivers/target/iscsi/iscsi_target_erl2.c
> +++ b/drivers/target/iscsi/iscsi_target_erl2.c
> @@ -372,7 +372,7 @@ int iscsit_prepare_cmds_for_realligance(struct iscsi_conn *conn)
>  		 * made generic here.
>  		 */
>  		if (!(cmd->cmd_flags & ICF_OOO_CMDSN) && !cmd->immediate_cmd &&
> -		     iscsi_sna_gte(cmd->stat_sn, conn->sess->exp_cmd_sn)) {
> +		     iscsi_sna_gte(cmd->cmd_sn, conn->sess->exp_cmd_sn)) {
>  			list_del(&cmd->i_conn_node);
>  			spin_unlock_bh(&conn->cmd_lock);
>  			iscsit_free_cmd(cmd);

Thanks for fixing this up.  Applied with another 'CC to stable for Ben &
Co. to pick this up..

--nab


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