forked from Minki/linux
staging: unisys: use after free in error messages
We dereference "bus" when we report the error so we have to move the kfree() down a couple lines. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -381,17 +381,17 @@ create_bus(CONTROLVM_MESSAGE *msg, char *buf)
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cmd.add_vbus.busTypeGuid = msg->cmd.createBus.busDataTypeGuid;
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cmd.add_vbus.busInstGuid = msg->cmd.createBus.busInstGuid;
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if (!VirtControlChanFunc) {
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kfree(bus);
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LOGERR("CONTROLVM_BUS_CREATE Failed: virtpci callback not registered.");
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POSTCODE_LINUX_3(BUS_CREATE_FAILURE_PC, bus->busNo,
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POSTCODE_SEVERITY_ERR);
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kfree(bus);
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return CONTROLVM_RESP_ERROR_VIRTPCI_DRIVER_FAILURE;
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}
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if (!VirtControlChanFunc(&cmd)) {
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kfree(bus);
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LOGERR("CONTROLVM_BUS_CREATE Failed: virtpci GUEST_ADD_VBUS returned error.");
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POSTCODE_LINUX_3(BUS_CREATE_FAILURE_PC, bus->busNo,
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POSTCODE_SEVERITY_ERR);
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kfree(bus);
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return
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CONTROLVM_RESP_ERROR_VIRTPCI_DRIVER_CALLBACK_ERROR;
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}
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