Displaying 20 results from an estimated 200 matches similar to: "[PATCH v2] Fix: buffer overflow during hvc_alloc()."
2020 Apr 05
0
[PATCH] Fix: buffer overflow during hvc_alloc().
From: Andrew Melnychenko <andrew at daynix.com>
If there is a lot(more then 16) of virtio-console devices
or virtio_console module is reloaded
- buffers 'vtermnos' and 'cons_ops' are overflowed.
In older kernels it overruns spinlock which leads to kernel freezing:
https://bugzilla.redhat.com/show_bug.cgi?id=1786239
Signed-off-by: Andrew Melnychenko <andrew at
2020 Apr 06
0
[PATCH] Fix: buffer overflow during hvc_alloc().
>
> Description of problem:
> Guest get 'Call Trace' when loading module "virtio_console" and unloading
> it frequently
>
>
> Version-Release number of selected component (if applicable):
> Guest
> kernel-4.18.0-167.el8.x86_64
> seabios-bin-1.11.1-4.module+el8.1.0+4066+0f1aadab.noarch
> # modinfo virtio_console
>
2012 Jun 07
7
[PATCH] xen/hvc: Fix polling mode to work with kdb/kgdb
Fix the polling section of the hvc driver to use the global "last_hvc"
variable, rather than the ttys.
With this change debugging a xen dom0 kernel is possible via the
following kernel parameter:
kgdboc=hvc0
Signed-off-by: Ben Guthro <Benjamin.Guthro@citrix.com>
diff --git a/drivers/tty/hvc/hvc_console.c b/drivers/tty/hvc/hvc_console.c
index 2d691eb..3750e74 100644
---
2009 Dec 22
4
[PATCH 00/31] virtio: console: Fixes, multiple devices and generic ports
Hey Rusty,
This series adds support for generic ports with each port getting two
vqs: one for input and one for output. The host notifies us via the
config space of the max. number of ports that can be added for a
particular device.
As a result of that change, the buffer management for find_readbufs
and send_bufs is moved to the vqs. Only one outbuf per port is used
so we bide away some time in
2009 Dec 22
4
[PATCH 00/31] virtio: console: Fixes, multiple devices and generic ports
Hey Rusty,
This series adds support for generic ports with each port getting two
vqs: one for input and one for output. The host notifies us via the
config space of the max. number of ports that can be added for a
particular device.
As a result of that change, the buffer management for find_readbufs
and send_bufs is moved to the vqs. Only one outbuf per port is used
so we bide away some time in
2011 Nov 08
3
[PATCH RFC v2 0/3] Support multiple VirtioConsoles.
(Amit pointed out that the patches never went out. This is a resend of
the series meant to go out on 11/2/2011; I've marked it "v2".)
This patchset applies to linux-next/next-20111102.
This series implements support for multiple virtio_consoles using KVM.
This patchset addresses several issues associated with trying to
establish multiple virtio consoles.
I'm trying to
2011 Nov 08
3
[PATCH RFC v2 0/3] Support multiple VirtioConsoles.
(Amit pointed out that the patches never went out. This is a resend of
the series meant to go out on 11/2/2011; I've marked it "v2".)
This patchset applies to linux-next/next-20111102.
This series implements support for multiple virtio_consoles using KVM.
This patchset addresses several issues associated with trying to
establish multiple virtio consoles.
I'm trying to
2011 Nov 08
3
[PATCH RFC v3 0/3] Support multiple VirtioConsoles.
(Amit pointed out that the patches never went out. This was a resend of
the series meant to go out on 11/2/2011; Now it's a resend of the mail this
morning, with everyone copied on the same mail. So sorry for the spam!
This is v3.)
This patchset applies to linux-next/next-20111102.
This series implements support for multiple virtio_consoles using KVM.
This patchset addresses several issues
2011 Nov 08
3
[PATCH RFC v3 0/3] Support multiple VirtioConsoles.
(Amit pointed out that the patches never went out. This was a resend of
the series meant to go out on 11/2/2011; Now it's a resend of the mail this
morning, with everyone copied on the same mail. So sorry for the spam!
This is v3.)
This patchset applies to linux-next/next-20111102.
This series implements support for multiple virtio_consoles using KVM.
This patchset addresses several issues
2011 Nov 08
3
[PATCH RFC v3 0/3] Support multiple VirtioConsoles.
(Amit pointed out that the patches never went out. This was a resend of
the series meant to go out on 11/2/2011; Now it's a resend of the mail this
morning, with everyone copied on the same mail. So sorry for the spam!
This is v3.)
This patchset applies to linux-next/next-20111102.
This series implements support for multiple virtio_consoles using KVM.
This patchset addresses several issues
2011 Nov 08
3
[PATCH RFC v2 0/3] Support multiple VirtioConsoles.
(Amit pointed out that the patches never went out. This is a resend of
the series meant to go out on 11/2/2011; I''ve marked it "v2".)
This patchset applies to linux-next/next-20111102.
This series implements support for multiple virtio_consoles using KVM.
This patchset addresses several issues associated with trying to
establish multiple virtio consoles.
I''m
2019 Mar 19
0
[PATCH] virtio_console: initialize vtermno value for ports
For regular serial ports we do not initialize value of vtermno
variable. A garbage value is assigned for non console ports.
The value can be observed as a random integer with [1].
[1] vim /sys/kernel/debug/virtio-ports/vport*p*
This patch initialize the value of vtermno for console serial
ports to '1' and regular serial ports are initiaized to '0'.
Reported-by: siliu at
2010 Mar 30
0
[PATCH 2/4] virtio: console: Fix early_put_chars usage
From: Francois Diakhate <fdiakh at gmail.com>
Currently early_put_chars is not used by virtio_console because it can
only be used once a port has been found, at which point it's too late
because it is no longer needed. This patch should fix it.
Acked-by: Christian Borntraeger <borntraeger at de.ibm.com>
Signed-off-by: Amit Shah <amit.shah at redhat.com>
Signed-off-by: Rusty
2010 Mar 30
0
[PATCH 2/4] virtio: console: Fix early_put_chars usage
From: Francois Diakhate <fdiakh at gmail.com>
Currently early_put_chars is not used by virtio_console because it can
only be used once a port has been found, at which point it's too late
because it is no longer needed. This patch should fix it.
Acked-by: Christian Borntraeger <borntraeger at de.ibm.com>
Signed-off-by: Amit Shah <amit.shah at redhat.com>
Signed-off-by: Rusty
2017 Feb 01
3
[PATCH] virtio-console: avoid DMA from stack
From: Omar Sandoval <osandov at fb.com>
put_chars() stuffs the buffer it gets into an sg, but that buffer may be
on the stack. This breaks with CONFIG_VMAP_STACK=y (for me, it
manifested as printks getting turned into NUL bytes).
Signed-off-by: Omar Sandoval <osandov at fb.com>
---
Patch based on v4.10-rc6.
drivers/char/virtio_console.c | 12 ++++++++++--
1 file changed, 10
2017 Feb 01
3
[PATCH] virtio-console: avoid DMA from stack
From: Omar Sandoval <osandov at fb.com>
put_chars() stuffs the buffer it gets into an sg, but that buffer may be
on the stack. This breaks with CONFIG_VMAP_STACK=y (for me, it
manifested as printks getting turned into NUL bytes).
Signed-off-by: Omar Sandoval <osandov at fb.com>
---
Patch based on v4.10-rc6.
drivers/char/virtio_console.c | 12 ++++++++++--
1 file changed, 10
2020 Jan 15
0
Re: python3-libguestfs for EPEL request
On Wed, Jan 15, 2020 at 12:06:45PM +0000, Nick Howitt wrote:
> Hello Richard,
>
> I am using ClearOS7 (a Centos 7 derivative which also uses EPEL) and
> am using various packages in the EPEL repository. I am interested in
> seeing python3-libguestfs added to EPEL in order to use wok-3.0.0
> and kimchi-3.0.0.
>
> Would it be possible for you to maintain the package in
2016 Jul 07
0
[PATCH 1/2] virtio/s390: keep early_put_chars
From: Christian Borntraeger <borntraeger at de.ibm.com>
In case the registration of the hvc tty never happens AND the kernel
thinks that hvc0 is the preferred console we should keep the early
printk function to avoid a kernel panic due to code being removed.
Signed-off-by: Christian Borntraeger <borntraeger at de.ibm.com>
Signed-off-by: Jing Liu <liujbjl at linux.vnet.ibm.com>
2007 May 09
0
[patch 6/9] lguest: the console driver
From: Rusty Russell <rusty@rustcorp.com.au>
A simple console driver for lguest.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
drivers/char/Makefile | 1
drivers/char/hvc_lguest.c | 99 ++++++++++++++++++++++++++++++++++++
2 files changed, 100 insertions(+)
diff
2007 May 09
0
[patch 6/9] lguest: the console driver
From: Rusty Russell <rusty@rustcorp.com.au>
A simple console driver for lguest.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
drivers/char/Makefile | 1
drivers/char/hvc_lguest.c | 99 ++++++++++++++++++++++++++++++++++++
2 files changed, 100 insertions(+)
diff