[Top] [All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-devel] [PATCH] xen/events: avoid NULL pointer dereference in evtchn_from_irq()

To: Juergen Gross <jgross@xxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
From: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
Date: Thu, 19 Mar 2020 12:01:05 -0400
Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>, Marek Marczykowski-Górecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>, stable@xxxxxxxxxxxxxxx
Delivery-date: Thu, 19 Mar 2020 16:01:24 +0000
List-id: Xen developer discussion <xen-devel.lists.xenproject.org>


On 3/19/20 3:14 AM, Juergen Gross wrote:

There have been reports of races in evtchn_from_irq() where the info
pointer has been NULL.

Do you have an example of how this race happens (and how moving kfree torcu will help)?


(I am mostly wondering whether we'd be masking a more serious problem)

-boris



_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxx
https://lists.xenproject.org/mailman/listinfo/xen-devel

References:
- [Xen-devel] [PATCH] xen/events: avoid NULL pointer dereference in evtchn_from_irq()
  - From: Juergen Gross

Prev by Date: Re: [Xen-devel] [PATCH v4 2/2] libxl: make creation of xenstore 'suspend event channel' node optional...
Next by Date: Re: [Xen-devel] [PATCH] xen-pciback: fix INTERRUPT_TYPE_* defines
Previous by thread: [Xen-devel] [PATCH] xen/events: avoid NULL pointer dereference in evtchn_from_irq()
Next by thread: [Xen-devel] [seabios test] 148711: regressions - FAIL
Index(es):
- Date
- Thread

Rackspace

Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.