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From: Jack Wang <jinpu.wang@cloud.ionos.com>
To: linux-rdma@vger.kernel.org
Cc: bvanassche@acm.org, leon@kernel.org, dledford@redhat.com,
	jgg@ziepe.ca, danil.kipnis@cloud.ionos.com,
	jinpu.wang@cloud.ionos.com,
	Lutz Pogrell <lutz.pogrell@cloud.ionos.com>
Subject: [PATCHv2 for-next 04/19] RDMA/rtrs-srv: Use sysfs_remove_file_self for disconnect
Date: Thu, 17 Dec 2020 15:19:00 +0100	[thread overview]
Message-ID: <20201217141915.56989-5-jinpu.wang@cloud.ionos.com> (raw)
In-Reply-To: <20201217141915.56989-1-jinpu.wang@cloud.ionos.com>

Remove self first to avoid deadlock, we don't want to
use close_work to remove sess sysfs.

Fixes: 91b11610af8d ("RDMA/rtrs: server: sysfs interface functions")
Signed-off-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Tested-by: Lutz Pogrell <lutz.pogrell@cloud.ionos.com>
---
 drivers/infiniband/ulp/rtrs/rtrs-srv-sysfs.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/infiniband/ulp/rtrs/rtrs-srv-sysfs.c b/drivers/infiniband/ulp/rtrs/rtrs-srv-sysfs.c
index d2edff3b8f0d..cca3a0acbabc 100644
--- a/drivers/infiniband/ulp/rtrs/rtrs-srv-sysfs.c
+++ b/drivers/infiniband/ulp/rtrs/rtrs-srv-sysfs.c
@@ -51,6 +51,8 @@ static ssize_t rtrs_srv_disconnect_store(struct kobject *kobj,
 	sockaddr_to_str((struct sockaddr *)&sess->s.dst_addr, str, sizeof(str));
 
 	rtrs_info(s, "disconnect for path %s requested\n", str);
+	/* first remove sysfs itself to avoid deadlock */
+	sysfs_remove_file_self(&sess->kobj, &attr->attr);
 	close_sess(sess);
 
 	return count;
-- 
2.25.1


  parent reply	other threads:[~2020-12-17 14:20 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-17 14:18 [PATCHv2 for-next 00/19] Misc update for rtrs Jack Wang
2020-12-17 14:18 ` [PATCHv2 for-next 01/19] RDMA/rtrs: Extend ibtrs_cq_qp_create Jack Wang
2020-12-17 14:18 ` [PATCHv2 for-next 02/19] RMDA/rtrs-srv: Occasionally flush ongoing session closing Jack Wang
2021-01-12 19:13   ` Jason Gunthorpe
2021-01-13  8:55     ` Jinpu Wang
2020-12-17 14:18 ` [PATCHv2 for-next 03/19] RDMA/rtrs-srv: Release lock before call into close_sess Jack Wang
2020-12-17 14:19 ` Jack Wang [this message]
2020-12-17 14:19 ` [PATCHv2 for-next 05/19] RDMA/rtrs-clt: Set mininum limit when create QP Jack Wang
2020-12-17 14:19 ` [PATCHv2 for-next 06/19] RDMA/rtrs-srv: Jump to dereg_mr label if allocate iu fails Jack Wang
2020-12-17 14:19 ` [PATCHv2 for-next 07/19] RDMA/rtrs: Call kobject_put in the failure path Jack Wang
2020-12-17 14:19 ` [PATCHv2 for-next 08/19] RDMA/rtrs-clt: Consolidate rtrs_clt_destroy_sysfs_root_{folder,files} Jack Wang
2020-12-17 14:19 ` [PATCHv2 for-next 09/19] RDMA/rtrs-clt: Kill wait_for_inflight_permits Jack Wang
2020-12-17 14:19 ` [PATCHv2 for-next 10/19] RDMA/rtrs-clt: Remove unnecessary 'goto out' Jack Wang
2020-12-17 14:19 ` [PATCHv2 for-next 11/19] RDMA/rtrs-clt: Kill rtrs_clt_change_state Jack Wang
2020-12-17 14:19 ` [PATCHv2 for-next 12/19] RDMA/rtrs-clt: Rename __rtrs_clt_change_state to rtrs_clt_change_state Jack Wang
2020-12-17 14:19 ` [PATCHv2 for-next 13/19] RDMA/rtrs-srv: Fix missing wr_cqe Jack Wang
2020-12-17 14:19 ` [PATCHv2 for-next 14/19] RDMA/rtrs-clt: Refactor the failure cases in alloc_clt Jack Wang
2020-12-17 14:19 ` [PATCHv2 for-next 15/19] RDMA/rtrs: Do not signal for heatbeat Jack Wang
2020-12-17 14:19 ` [PATCHv2 for-next 16/19] RDMA/rtrs-clt: Use bitmask to check sess->flags Jack Wang
2020-12-17 14:19 ` [PATCHv2 for-next 17/19] RDMA/rtrs-srv: Do not signal REG_MR Jack Wang
2020-12-17 14:19 ` [PATCHv2 for-next 18/19] RDMA/rtrs-srv: Init wr_cnt as 1 Jack Wang
2020-12-17 14:19 ` [PATCHv2 for-next 19/19] RDMA/rtrs: Fix KASAN: stack-out-of-bounds bug Jack Wang
2021-01-11  7:04 ` [PATCHv2 for-next 00/19] Misc update for rtrs Jinpu Wang
2021-01-15 19:48 ` Jason Gunthorpe

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