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hw/net/vmxnet3: Do not abort if the guest is trying to use an invalid TX queue 

QEMU should never abort just because the guest is doing something odd.
Let's simply log the error and ignore the bad transmit queue instead.

Buglink: https://bugs.launchpad.net/qemu/+bug/1926111
Message-Id: <20210715103755.1035566-1-thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
This commit is contained in:
Thomas Huth 2021-07-15 12:37:55 +02:00
parent 659eb157a5
commit 6a932c4ed8
1 changed files with 7 additions and 2 deletions
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9
hw/net/vmxnet3.c
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@ -23,6 +23,7 @@
#include "net/checksum.h"
#include "sysemu/sysemu.h"
#include "qemu/bswap.h"
#include "qemu/log.h"
#include "qemu/module.h"
#include "hw/pci/msix.h"
#include "hw/pci/msi.h"
@ -1093,8 +1094,12 @@ vmxnet3_io_bar0_write(void *opaque, hwaddr addr,
int tx_queue_idx =
VMW_MULTIREG_IDX_BY_ADDR(addr, VMXNET3_REG_TXPROD,
VMXNET3_REG_ALIGN);
assert(tx_queue_idx <= s->txq_num);
vmxnet3_process_tx_queue(s, tx_queue_idx);
if (tx_queue_idx <= s->txq_num) {
vmxnet3_process_tx_queue(s, tx_queue_idx);
} else {
qemu_log_mask(LOG_GUEST_ERROR, "vmxnet3: Illegal TX queue %d/%d\n",
tx_queue_idx, s->txq_num);
}
return;
}