Kernel: Limit the number of in-flight packet buffers

This fixes an OOM when hitting the VM with lots of UDP packets. fixes #6907
Author: https://github.com/gunnarbeutner Commit: f999d5a91a Pull-request: https://github.com/SerenityOS/serenity/pull/6914 Issue: https://github.com/SerenityOS/serenity/issues/6907
2025-09-02 23:56:06 +00:00 · 2021-05-06 20:22:57 +02:00 · 2021-05-06 20:22:57 +02:00 · f999d5a91a · 2024-07-18 18:36:23 +09:00
commit f999d5a91a
parent dd39bb7784
2 changed files with 11 additions and 0 deletions
--- a/Kernel/Net/NetworkAdapter.h
+++ b/Kernel/Net/NetworkAdapter.h
@ -80,7 +80,11 @@ private:
        Time timestamp;
    };

+    // FIXME: Make this configurable
+    static constexpr size_t max_packet_buffers = 1024;
+
    SinglyLinkedList<PacketWithTimestamp> m_packet_queue;
+    size_t m_packet_queue_size { 0 };
    SinglyLinkedList<KBuffer> m_unused_packet_buffers;
    size_t m_unused_packet_buffers_count { 0 };
    String m_name;