[107/190] Revert "RDMA/i40iw: Handle workqueue allocation failure"
diff mbox series

Message ID 20210421130105.1226686-108-gregkh@linuxfoundation.org
State New, archived
Headers show
Series
  • Revertion of all of the umn.edu commits
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Commit Message

Greg KH April 21, 2021, 12:59 p.m. UTC
This reverts commit e2a438bd7116889af36304903b92e56d0f347228.

Commits from @umn.edu addresses have been found to be submitted in "bad
faith" to try to test the kernel community's ability to review "known
malicious" changes.  The result of these submissions can be found in a
paper published at the 42nd IEEE Symposium on Security and Privacy
entitled, "Open Source Insecurity: Stealthily Introducing
Vulnerabilities via Hypocrite Commits" written by Qiushi Wu (University
of Minnesota) and Kangjie Lu (University of Minnesota).

Because of this, all submissions from this group must be reverted from
the kernel tree and will need to be re-reviewed again to determine if
they actually are a valid fix.  Until that work is complete, remove this
change to ensure that no problems are being introduced into the
codebase.

Cc: Kangjie Lu <kjlu@umn.edu>
Cc: Shiraz, Saleem <shiraz.saleem@intel.com>
Cc: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/infiniband/hw/i40iw/i40iw.h      |  2 +-
 drivers/infiniband/hw/i40iw/i40iw_cm.c   | 18 +++---------------
 drivers/infiniband/hw/i40iw/i40iw_main.c |  5 +----
 3 files changed, 5 insertions(+), 20 deletions(-)

Comments

Jason Gunthorpe April 21, 2021, 2:07 p.m. UTC | #1
On Wed, Apr 21, 2021 at 02:59:42PM +0200, Greg Kroah-Hartman wrote:
> This reverts commit e2a438bd7116889af36304903b92e56d0f347228.
> 
> Commits from @umn.edu addresses have been found to be submitted in "bad
> faith" to try to test the kernel community's ability to review "known
> malicious" changes.  The result of these submissions can be found in a
> paper published at the 42nd IEEE Symposium on Security and Privacy
> entitled, "Open Source Insecurity: Stealthily Introducing
> Vulnerabilities via Hypocrite Commits" written by Qiushi Wu (University
> of Minnesota) and Kangjie Lu (University of Minnesota).
> 
> Because of this, all submissions from this group must be reverted from
> the kernel tree and will need to be re-reviewed again to determine if
> they actually are a valid fix.  Until that work is complete, remove this
> change to ensure that no problems are being introduced into the
> codebase.
> 
> Cc: Kangjie Lu <kjlu@umn.edu>
> Cc: Shiraz, Saleem <shiraz.saleem@intel.com>
> Cc: Jason Gunthorpe <jgg@mellanox.com>
> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> ---
>  drivers/infiniband/hw/i40iw/i40iw.h      |  2 +-
>  drivers/infiniband/hw/i40iw/i40iw_cm.c   | 18 +++---------------
>  drivers/infiniband/hw/i40iw/i40iw_main.c |  5 +----
>  3 files changed, 5 insertions(+), 20 deletions(-)

I don't see a reason to revert this one, the new code structure
appears OK

Jason
Greg KH April 27, 2021, 2:23 p.m. UTC | #2
On Wed, Apr 21, 2021 at 11:07:00AM -0300, Jason Gunthorpe wrote:
> On Wed, Apr 21, 2021 at 02:59:42PM +0200, Greg Kroah-Hartman wrote:
> > This reverts commit e2a438bd7116889af36304903b92e56d0f347228.
> > 
> > Commits from @umn.edu addresses have been found to be submitted in "bad
> > faith" to try to test the kernel community's ability to review "known
> > malicious" changes.  The result of these submissions can be found in a
> > paper published at the 42nd IEEE Symposium on Security and Privacy
> > entitled, "Open Source Insecurity: Stealthily Introducing
> > Vulnerabilities via Hypocrite Commits" written by Qiushi Wu (University
> > of Minnesota) and Kangjie Lu (University of Minnesota).
> > 
> > Because of this, all submissions from this group must be reverted from
> > the kernel tree and will need to be re-reviewed again to determine if
> > they actually are a valid fix.  Until that work is complete, remove this
> > change to ensure that no problems are being introduced into the
> > codebase.
> > 
> > Cc: Kangjie Lu <kjlu@umn.edu>
> > Cc: Shiraz, Saleem <shiraz.saleem@intel.com>
> > Cc: Jason Gunthorpe <jgg@mellanox.com>
> > Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> > ---
> >  drivers/infiniband/hw/i40iw/i40iw.h      |  2 +-
> >  drivers/infiniband/hw/i40iw/i40iw_cm.c   | 18 +++---------------
> >  drivers/infiniband/hw/i40iw/i40iw_main.c |  5 +----
> >  3 files changed, 5 insertions(+), 20 deletions(-)
> 
> I don't see a reason to revert this one, the new code structure
> appears OK

Thanks, now dropped.

greg k-h

Patch
diff mbox series

diff --git a/drivers/infiniband/hw/i40iw/i40iw.h b/drivers/infiniband/hw/i40iw/i40iw.h
index 6a79502c8b53..a6bf8f42e7da 100644
--- a/drivers/infiniband/hw/i40iw/i40iw.h
+++ b/drivers/infiniband/hw/i40iw/i40iw.h
@@ -561,7 +561,7 @@  enum i40iw_status_code i40iw_obj_aligned_mem(struct i40iw_device *iwdev,
 
 void i40iw_request_reset(struct i40iw_device *iwdev);
 void i40iw_destroy_rdma_device(struct i40iw_ib_device *iwibdev);
-int i40iw_setup_cm_core(struct i40iw_device *iwdev);
+void i40iw_setup_cm_core(struct i40iw_device *iwdev);
 void i40iw_cleanup_cm_core(struct i40iw_cm_core *cm_core);
 void i40iw_process_ceq(struct i40iw_device *, struct i40iw_ceq *iwceq);
 void i40iw_process_aeq(struct i40iw_device *);
diff --git a/drivers/infiniband/hw/i40iw/i40iw_cm.c b/drivers/infiniband/hw/i40iw/i40iw_cm.c
index ac65c8237b2e..450271fde637 100644
--- a/drivers/infiniband/hw/i40iw/i40iw_cm.c
+++ b/drivers/infiniband/hw/i40iw/i40iw_cm.c
@@ -3236,7 +3236,7 @@  void i40iw_receive_ilq(struct i40iw_sc_vsi *vsi, struct i40iw_puda_buf *rbuf)
  * core
  * @iwdev: iwarp device structure
  */
-int i40iw_setup_cm_core(struct i40iw_device *iwdev)
+void i40iw_setup_cm_core(struct i40iw_device *iwdev)
 {
 	struct i40iw_cm_core *cm_core = &iwdev->cm_core;
 
@@ -3255,19 +3255,9 @@  int i40iw_setup_cm_core(struct i40iw_device *iwdev)
 
 	cm_core->event_wq = alloc_ordered_workqueue("iwewq",
 						    WQ_MEM_RECLAIM);
-	if (!cm_core->event_wq)
-		goto error;
 
 	cm_core->disconn_wq = alloc_ordered_workqueue("iwdwq",
 						      WQ_MEM_RECLAIM);
-	if (!cm_core->disconn_wq)
-		goto error;
-
-	return 0;
-error:
-	i40iw_cleanup_cm_core(&iwdev->cm_core);
-
-	return -ENOMEM;
 }
 
 /**
@@ -3287,10 +3277,8 @@  void i40iw_cleanup_cm_core(struct i40iw_cm_core *cm_core)
 		del_timer_sync(&cm_core->tcp_timer);
 	spin_unlock_irqrestore(&cm_core->ht_lock, flags);
 
-	if (cm_core->event_wq)
-		destroy_workqueue(cm_core->event_wq);
-	if (cm_core->disconn_wq)
-		destroy_workqueue(cm_core->disconn_wq);
+	destroy_workqueue(cm_core->event_wq);
+	destroy_workqueue(cm_core->disconn_wq);
 }
 
 /**
diff --git a/drivers/infiniband/hw/i40iw/i40iw_main.c b/drivers/infiniband/hw/i40iw/i40iw_main.c
index ab4cb11950dc..9db84ec08fc0 100644
--- a/drivers/infiniband/hw/i40iw/i40iw_main.c
+++ b/drivers/infiniband/hw/i40iw/i40iw_main.c
@@ -1634,10 +1634,7 @@  static int i40iw_open(struct i40e_info *ldev, struct i40e_client *client)
 	iwdev = &hdl->device;
 	iwdev->hdl = hdl;
 	dev = &iwdev->sc_dev;
-	if (i40iw_setup_cm_core(iwdev)) {
-		kfree(iwdev->hdl);
-		return -ENOMEM;
-	}
+	i40iw_setup_cm_core(iwdev);
 
 	dev->back_dev = (void *)iwdev;
 	iwdev->ldev = &hdl->ldev;