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| author | Prasad J Pandit <pjp@fedoraproject.org> | 2016-09-30 00:27:33 +0530 |
|---|---|---|
| committer | Jason Wang <jasowang@redhat.com> | 2016-10-26 09:57:59 +0800 |
| commit | 34e29ce754c02bb6b3bdd244fbb85033460feaff (patch) | |
| tree | fa2f1228043f4ea33ba3b7e9de9be0f65147fde2 /scripts/tracetool/backend/simple.py | |
| parent | ede0cbeb7892bdf4a19128853a3a3c61a17fb068 (diff) | |
| download | focaccia-qemu-34e29ce754c02bb6b3bdd244fbb85033460feaff.tar.gz focaccia-qemu-34e29ce754c02bb6b3bdd244fbb85033460feaff.zip | |
net: pcnet: check rx/tx descriptor ring length
The AMD PC-Net II emulator has set of control and status(CSR) registers. Of these, CSR76 and CSR78 hold receive and transmit descriptor ring length respectively. This ring length could range from 1 to 65535. Setting ring length to zero leads to an infinite loop in pcnet_rdra_addr() or pcnet_transmit(). Add check to avoid it. Reported-by: Li Qiang <liqiang6-s@360.cn> Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org> Signed-off-by: Jason Wang <jasowang@redhat.com>
Diffstat (limited to 'scripts/tracetool/backend/simple.py')
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