On Thu, 13 Oct 2016 11:30:08 +0800
Li Qiang wrote:
> Yes, I think the limit to apply to xattr size in 9pfs is the same as the
> Linux xattr size limit, I will try to find this limit.
>
/usr/include/linux/limits.h:#define XATTR_SIZE_MAX 65536/* size of an
extended attribute value (64k)
On Wed, 12 Oct 2016 15:49:46 -0500
Eric Blake wrote:
> On 10/12/2016 08:23 AM, Greg Kurz wrote:
> >
> > But in fact, I'm afraid we have a more serious problem here... size
> > comes from the guest and could cause g_malloc() to abort if QEMU has
> > reached some RLIMIT... we need to call g_try_ma
Yes, I think the limit to apply to xattr size in 9pfs is the same as the
Linux xattr size limit, I will try to find this limit.
Thanks.
On 2016-10-13 4:49 GMT+08:00 Eric Blake wrote:
> On 10/12/2016 08:23 AM, Greg Kurz wrote:
> >
> > But in fact, I'm afraid we have a more serious problem here..
On 10/12/2016 08:23 AM, Greg Kurz wrote:
>
> But in fact, I'm afraid we have a more serious problem here... size
> comes from the guest and could cause g_malloc() to abort if QEMU has
> reached some RLIMIT... we need to call g_try_malloc0() and return
> ENOMEM if the allocation fails.
Even if it
On Mon, 10 Oct 2016 10:56:03 +0200
Greg Kurz wrote:
> On Sat, 8 Oct 2016 22:26:51 -0700
> Li Qiang wrote:
>
> > From: Li Qiang
> >
> > 9pfs uses g_malloc() to allocate the xattr memory space, if the guest
> > reads this memory before writing to it, this will leak host heap memory
> > to the
On Sat, 8 Oct 2016 22:26:51 -0700
Li Qiang wrote:
> From: Li Qiang
>
> 9pfs uses g_malloc() to allocate the xattr memory space, if the guest
> reads this memory before writing to it, this will leak host heap memory
> to the guest. This patch avoid this.
>
> Signed-off-by: Li Qiang
> ---
I'v
From: Li Qiang
9pfs uses g_malloc() to allocate the xattr memory space, if the guest
reads this memory before writing to it, this will leak host heap memory
to the guest. This patch avoid this.
Signed-off-by: Li Qiang
---
hw/9pfs/9p.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff
