From: Nicholas Bellinger <[email protected]> This patch fixes a bug in tcm_fc where fc_exch memory from fc_exch_mgr->ep_pool is currently being leaked by ft_send_resp_status() usage. Following current code in ft_queue_status() response path, using lport->tt.seq_send() needs to be followed by a lport->tt.exch_done() in order to release fc_exch memory back into libfc_em kmem_cache.
ft_send_resp_status() code is currently used in pre submit se_cmd ft_send_work() error exceptions, TM request setup exceptions, and main TM response callback path in ft_queue_tm_resp(). This bugfix addresses the leak in these cases. Cc: Mark D Rustad <[email protected]> Cc: Kiran Patil <[email protected]> Cc: Robert Love <[email protected]> Cc: Andy Grover <[email protected]> Signed-off-by: Nicholas Bellinger <[email protected]> --- drivers/target/tcm_fc/tfc_cmd.c | 6 ++++-- 1 files changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/target/tcm_fc/tfc_cmd.c b/drivers/target/tcm_fc/tfc_cmd.c index 346e72d..dc772f9 100644 --- a/drivers/target/tcm_fc/tfc_cmd.c +++ b/drivers/target/tcm_fc/tfc_cmd.c @@ -315,10 +315,12 @@ static void ft_send_resp_status(struct fc_lport *lport, fc_fill_reply_hdr(fp, rx_fp, FC_RCTL_DD_CMD_STATUS, 0); sp = fr_seq(fp); - if (sp) + if (sp) { lport->tt.seq_send(lport, sp, fp); - else + lport->tt.exch_done(sp); + } else { lport->tt.frame_send(lport, fp); + } } /* -- 1.7.2.5 _______________________________________________ devel mailing list [email protected] https://lists.open-fcoe.org/mailman/listinfo/devel
