Displaying 12 results from an estimated 12 matches for "labbott".
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abbott
2016 Dec 06
3
[PATCH] virtio-net: Fix DMA-from-the-stack in virtnet_set_mac_address()
With CONFIG_VMAP_STACK=y, virtnet_set_mac_address() can be passed a
pointer to the stack and it will OOPS. Copy the address to the heap
to prevent the crash.
Cc: Michael S. Tsirkin <mst at redhat.com>
Cc: Jason Wang <jasowang at redhat.com>
Cc: Laura Abbott <labbott at redhat.com>
Reported-by: zbyszek at in.waw.pl
Signed-off-by: Andy Lutomirski <luto at kernel.org>
---
Very lightly tested.
drivers/net/virtio_net.c | 19 ++++++++++++++-----
1 file changed, 14 insertions(+), 5 deletions(-)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_n...
2016 Dec 06
3
[PATCH] virtio-net: Fix DMA-from-the-stack in virtnet_set_mac_address()
With CONFIG_VMAP_STACK=y, virtnet_set_mac_address() can be passed a
pointer to the stack and it will OOPS. Copy the address to the heap
to prevent the crash.
Cc: Michael S. Tsirkin <mst at redhat.com>
Cc: Jason Wang <jasowang at redhat.com>
Cc: Laura Abbott <labbott at redhat.com>
Reported-by: zbyszek at in.waw.pl
Signed-off-by: Andy Lutomirski <luto at kernel.org>
---
Very lightly tested.
drivers/net/virtio_net.c | 19 ++++++++++++++-----
1 file changed, 14 insertions(+), 5 deletions(-)
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_n...
2016 Dec 07
0
Oops with CONFIG_VMAP_STCK and bond device + virtio-net
On Mon, Dec 5, 2016 at 3:53 PM, Laura Abbott <labbott at redhat.com> wrote:
> This looks like an issue with CONFIG_VMAP_STACK since bond_enslave uses
> struct sockaddr from the stack and virtnet_set_mac_address calls
> sg_init_one which triggers BUG_ON(!virt_addr_valid(buf));
>
> I know there have been a lot of CONFIG_VMAP_STACK fixe...
2016 Dec 05
1
Oops with CONFIG_VMAP_STCK and bond device + virtio-net
Hi,
Fedora got a bug report https://bugzilla.redhat.com/show_bug.cgi?id=1401612
In qemu with two virtio-net interfaces:
$ ip l
...
5: ens14: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
link/ether 52:54:00:e9:64:41 brd ff:ff:ff:ff:ff:ff
6: ens15: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
2016 Dec 05
1
Oops with CONFIG_VMAP_STCK and bond device + virtio-net
Hi,
Fedora got a bug report https://bugzilla.redhat.com/show_bug.cgi?id=1401612
In qemu with two virtio-net interfaces:
$ ip l
...
5: ens14: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
link/ether 52:54:00:e9:64:41 brd ff:ff:ff:ff:ff:ff
6: ens15: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000
2016 May 11
1
Re: host freeze when starting VM
Hi Han,
thanks for your reply. I'm using KVM as hypervisor. The versions are:
Kernel: 4.5.2
Libvirt: 1.3.4-1
But its quite embarrasing... when I was answering your mail I was having a
look if there is a new kernel I can build, since I have to rely on some
patches. I upgraded from 4.4.3 to 4.5.2 and now libvirt doesn´t have any
problem.
So thanks for the heads up!
Regards
Alex
On Tue, May
2017 Sep 16
2
Regression in virtio block driver with 4.13.2
On 09/15/2017 10:37 AM, Christoph Hellwig wrote:
> On Fri, Sep 15, 2017 at 09:54:08AM -0700, Laura Abbott wrote:
>> Hi,
>>
>> Fedora got a bug report on an early version of 4.13.2
>> https://paste.fedoraproject.org/paste/t-Yx23LN5QwJ7oPZLj3zrg
>
> Can you check if the issue goes away when you disable
> CONFIG_VIRTIO_BLK_SCSI?
>
Yes, the issue goes away
2017 Sep 16
2
Regression in virtio block driver with 4.13.2
On 09/15/2017 10:37 AM, Christoph Hellwig wrote:
> On Fri, Sep 15, 2017 at 09:54:08AM -0700, Laura Abbott wrote:
>> Hi,
>>
>> Fedora got a bug report on an early version of 4.13.2
>> https://paste.fedoraproject.org/paste/t-Yx23LN5QwJ7oPZLj3zrg
>
> Can you check if the issue goes away when you disable
> CONFIG_VIRTIO_BLK_SCSI?
>
Yes, the issue goes away
2017 Sep 15
2
Regression in virtio block driver with 4.13.2
Hi,
Fedora got a bug report on an early version of 4.13.2
https://paste.fedoraproject.org/paste/t-Yx23LN5QwJ7oPZLj3zrg
[ 5.913866] usercopy: kernel memory overwrite attempt detected to
(null) (<null>) (16 bytes)
[ 5.914199] ------------[ cut here ]------------
[ 5.914201] kernel BUG at mm/usercopy.c:72!
[ 5.914279] invalid opcode: 0000 [#1] SMP
[ 5.914293] Modules
2017 Sep 15
2
Regression in virtio block driver with 4.13.2
Hi,
Fedora got a bug report on an early version of 4.13.2
https://paste.fedoraproject.org/paste/t-Yx23LN5QwJ7oPZLj3zrg
[ 5.913866] usercopy: kernel memory overwrite attempt detected to
(null) (<null>) (16 bytes)
[ 5.914199] ------------[ cut here ]------------
[ 5.914201] kernel BUG at mm/usercopy.c:72!
[ 5.914279] invalid opcode: 0000 [#1] SMP
[ 5.914293] Modules
2017 Mar 23
3
[REGRESSION] 07ec51480b5e ("virtio_pci: use shared interrupts for virtqueues") causes crashes in guest
Hi,
Fedora has received multiple reports of crashes when running
4.11 as a guest
https://bugzilla.redhat.com/show_bug.cgi?id=1430297
https://bugzilla.redhat.com/show_bug.cgi?id=1434462
https://bugzilla.kernel.org/show_bug.cgi?id=194911
https://bugzilla.redhat.com/show_bug.cgi?id=1433899
The crashes are not always consistent but they are generally
some flavor of oops or GPF in virtio related
2017 Mar 23
3
[REGRESSION] 07ec51480b5e ("virtio_pci: use shared interrupts for virtqueues") causes crashes in guest
Hi,
Fedora has received multiple reports of crashes when running
4.11 as a guest
https://bugzilla.redhat.com/show_bug.cgi?id=1430297
https://bugzilla.redhat.com/show_bug.cgi?id=1434462
https://bugzilla.kernel.org/show_bug.cgi?id=194911
https://bugzilla.redhat.com/show_bug.cgi?id=1433899
The crashes are not always consistent but they are generally
some flavor of oops or GPF in virtio related