tty: ipwireless: fix possible NULL dereference
The function alloc_ctrl_packet() can fail and return NULL. Incase it fails print an error message and exit. Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk> Reviewed-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -1572,6 +1572,11 @@ static void handle_received_SETUP_packet(struct ipw_hardware *hw,
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sizeof(struct ipw_setup_reboot_msg_ack),
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ADDR_SETUP_PROT, TL_PROTOCOLID_SETUP,
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TL_SETUP_SIGNO_REBOOT_MSG_ACK);
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if (!packet) {
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pr_err(IPWIRELESS_PCCARD_NAME
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": Not enough memory to send reboot packet");
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break;
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}
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packet->header.length =
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sizeof(struct TlSetupRebootMsgAck);
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send_packet(hw, PRIO_SETUP, &packet->header);
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