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Index: qemu/hw/eepro100.c
@@ -729,6 +729,7 @@
logout
("TBD (simplified mode): buffer address 0x%08x, size 0x%04x\n",
tx_buffer_address, tx_buffer_size);
+ assert(size + tx_buffer_size <= sizeof(buf));
cpu_physical_memory_read(tx_buffer_address, &buf[size],
tx_buffer_size);
size += tx_buffer_size;
@@ -749,9 +750,13 @@
logout
("TBD (extended mode): buffer address 0x%08x, size 0x%04x\n",
tx_buffer_address, tx_buffer_size);
- cpu_physical_memory_read(tx_buffer_address, &buf[size],
- tx_buffer_size);
- size += tx_buffer_size;
+ if (size + tx_buffer_size > sizeof(buf)) {
+ logout("bad extended TCB with size 0x%04x\n", tx_buffer_size);
+ } else {
+ cpu_physical_memory_read(tx_buffer_address, &buf[size],
+ tx_buffer_size);
+ size += tx_buffer_size;
+ }
if (tx_buffer_el & 1) {
break;
}
@@ -766,14 +771,20 @@
logout
("TBD (flexible mode): buffer address 0x%08x, size 0x%04x\n",
tx_buffer_address, tx_buffer_size);
- cpu_physical_memory_read(tx_buffer_address, &buf[size],
- tx_buffer_size);
- size += tx_buffer_size;
+ if (size + tx_buffer_size > sizeof(buf)) {
+ logout("bad flexible TCB with size 0x%04x\n", tx_buffer_size);
+ } else {
+ cpu_physical_memory_read(tx_buffer_address, &buf[size],
+ tx_buffer_size);
+ size += tx_buffer_size;
+ }
if (tx_buffer_el & 1) {
break;
}
}
}
+ logout("%p sending frame, len=%d,%s\n", s, size, nic_dump(buf, size));
+ assert(size <= sizeof(buf));
qemu_send_packet(s->vc, buf, size);
s->statistics.tx_good_frames++;
/* Transmit with bad status would raise an CX/TNO interrupt.
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