diff options
| author | Prasad J Pandit <pjp@fedoraproject.org> | 2016-10-21 17:39:29 +0530 |
|---|---|---|
| committer | Jason Wang <jasowang@redhat.com> | 2016-10-26 09:57:59 +0800 |
| commit | c7c35916692fe010fef25ac338443d3fe40be225 (patch) | |
| tree | df4478904ee489bdd6def25355eba75848d5aef0 /hw/net | |
| parent | fdda170e50b8af062cf5741e12c4fb5e57a2eacf (diff) | |
| download | qemu-c7c35916692fe010fef25ac338443d3fe40be225.zip | |
net: rtl8139: limit processing of ring descriptors
RTL8139 ethernet controller in C+ mode supports multiple
descriptor rings, each with maximum of 64 descriptors. While
processing transmit descriptor ring in 'rtl8139_cplus_transmit',
it does not limit the descriptor count and runs forever. Add
check to avoid it.
Reported-by: Andrew Henderson <hendersa@icculus.org>
Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Diffstat (limited to 'hw/net')
| -rw-r--r-- | hw/net/rtl8139.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/hw/net/rtl8139.c b/hw/net/rtl8139.c index 3345bc6b5e..f05e59c85f 100644 --- a/hw/net/rtl8139.c +++ b/hw/net/rtl8139.c @@ -2350,7 +2350,7 @@ static void rtl8139_cplus_transmit(RTL8139State *s) { int txcount = 0; - while (rtl8139_cplus_transmit_one(s)) + while (txcount < 64 && rtl8139_cplus_transmit_one(s)) { ++txcount; } |