[{"id":3683347,"web_url":"http://patchwork.ozlabs.org/comment/3683347/","msgid":"","list_archive_url":null,"date":"2026-04-28T10:11:27","subject":"Re: [Intel-wired-lan] [PATCH iwl-next v7 09/14] idpf: make mbx_task\n queueing and cancelling more consistent","submitter":{"id":75597,"url":"http://patchwork.ozlabs.org/api/people/75597/","name":"Loktionov, Aleksandr","email":"aleksandr.loktionov@intel.com"},"content":"> -----Original Message-----\n> From: Intel-wired-lan On Behalf\n> Of Larysa Zaremba\n> Sent: Tuesday, April 28, 2026 10:27 AM\n> To: intel-wired-lan@lists.osuosl.org; Nguyen, Anthony L\n> \n> Cc: Lobakin, Aleksander ; Samudrala,\n> Sridhar ; Michal Swiatkowski\n> ; Zaremba, Larysa\n> ; Fijalkowski, Maciej\n> ; Tantilov, Emil S\n> ; Chittim, Madhu ;\n> Hay, Joshua A ; Keller, Jacob E\n> ; Shanmugam, Jayaprakash\n> ; Jiri Pirko ;\n> David S. Miller ; Eric Dumazet\n> ; Jakub Kicinski ; Paolo Abeni\n> ; Simon Horman ; Jonathan Corbet\n> ; Richard Cochran ; Kitszel,\n> Przemyslaw ; Andrew Lunn\n> ; netdev@vger.kernel.org; linux-\n> doc@vger.kernel.org; linux-kernel@vger.kernel.org; Salin, Samuel\n> \n> Subject: [Intel-wired-lan] [PATCH iwl-next v7 09/14] idpf: make\n> mbx_task queueing and cancelling more consistent\n> \n> As a consequence of refactoring idpf code to use libeth APIs,\n> idpf_vc_xn_shutdown was merged with and replaced by\n> idpf_deinit_dflt_mbx.\n> This does not affect the Tx path, as it checked for a presence of an\n> xn manager anyway. Rx processing is handled by the mbx_task that is\n> not always cancelled before calling the new consolidated mailbox\n> deinit function.\n> Moreover, in the reset path idpf_intr_rel() reschedules it after the\n> deinit is done. This leads to mbx_task referencing the freed mailbox\n> and causing KASAN warnings.\n> \n> To remedy this, in the init path, do the first queueing of mbx_task in\n> idpf_init_dflt_mbx(), in deinit and reset, always cancel the task in\n> idpf_deinit_dflt_mbx() and in every flow first call\n> idpf_mb_intr_rel_irq().\n> \n> Reviewed-by: Emil Tantilov \n> Reviewed-by: Michal Kubiak \n> Signed-off-by: Larysa Zaremba \n> Tested-by: Samuel Salin \n> Signed-off-by: Tony Nguyen \n> ---\n> drivers/net/ethernet/intel/idpf/idpf.h | 1 +\n> drivers/net/ethernet/intel/idpf/idpf_lib.c | 9 ++++-----\n> drivers/net/ethernet/intel/idpf/idpf_virtchnl.c | 6 +++++-\n> 3 files changed, 10 insertions(+), 6 deletions(-)\n> \n> diff --git a/drivers/net/ethernet/intel/idpf/idpf.h\n> b/drivers/net/ethernet/intel/idpf/idpf.h\n> index 679539a1b947..1d0e32e47e87 100644\n> --- a/drivers/net/ethernet/intel/idpf/idpf.h\n> +++ b/drivers/net/ethernet/intel/idpf/idpf.h\n> @@ -984,6 +984,7 @@ void idpf_vc_event_task(struct work_struct *work);\n> void idpf_dev_ops_init(struct idpf_adapter *adapter); void\n> idpf_vf_dev_ops_init(struct idpf_adapter *adapter); int\n> idpf_intr_req(struct idpf_adapter *adapter);\n> +void idpf_mb_intr_rel_irq(struct idpf_adapter *adapter);\n> void idpf_intr_rel(struct idpf_adapter *adapter);\n> u16 idpf_get_max_tx_hdr_size(struct idpf_adapter *adapter); int\n> idpf_initiate_soft_reset(struct idpf_vport *vport, diff --git\n> a/drivers/net/ethernet/intel/idpf/idpf_lib.c\n> b/drivers/net/ethernet/intel/idpf/idpf_lib.c\n> index 0d131bf0993e..7988836fbae0 100644\n> --- a/drivers/net/ethernet/intel/idpf/idpf_lib.c\n> +++ b/drivers/net/ethernet/intel/idpf/idpf_lib.c\n> @@ -68,9 +68,11 @@ static void idpf_deinit_vector_stack(struct\n> idpf_adapter *adapter)\n> * This will also disable interrupt mode and queue up mailbox task.\n> Mailbox\n> * task will reschedule itself if not in interrupt mode.\n> */\n\n...\n\n> \n> \tidpf_vport_params_buf_rel(adapter);\n> \n> --\n> 2.47.0\n\n\nReviewed-by: Aleksandr Loktionov ","headers":{"Return-Path":"","X-Original-To":["incoming@patchwork.ozlabs.org","intel-wired-lan@lists.osuosl.org"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","intel-wired-lan@lists.osuosl.org"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=osuosl.org header.i=@osuosl.org header.a=rsa-sha256\n header.s=default header.b=PHI6YFyU;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=osuosl.org\n (client-ip=140.211.166.138; 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