qed/qede で "ethtool -d" を実行した後にメモリー破損が発生する

Issue

• スラブメモリーの破損により、システムがランダムに再起動します。
• cmdline が slub_debug=FZP に設定されている場合、"Poison overwritten" 警告が表示されます。
• `ethtool -d` による qede デバッグダンプが、カーネルパニックを引き起こします。
• カーネルクラッシュメッセージには、以下のようなログが含まれます。

[qed_dbg_dump:7790(ens3f4)]Collecting a debug feature ["idle_chk"]
[qed_dbg_dump:7790(ens3f4)]Collecting a debug feature ["idle_chk"]
[qed_dbg_dump:7790(ens3f4)]Collecting a debug feature ["reg_fifo"]
[qed_dbg_dump:7790(ens3f4)]Collecting a debug feature ["igu_fifo"]
[qed_dbg_dump:7790(ens3f4)]Collecting a debug feature ["protection_override"]
[qed_dbg_dump:7790(ens3f4)]Collecting a debug feature ["fw_asserts"]
[qed_dbg_dump:7790(ens3f4)]Collecting a debug feature ["grc"]
[qed_dbg_dump:7790(ens3f4)]Collecting a debug feature ["mcp_trace"]
[qed_dbg_nvm_image:7911(ens3f4)]Collecting a debug feature ["nvram image 2"]
[qed_dbg_nvm_image:7911(ens3f4)]Collecting a debug feature ["nvram image 3"]
[qed_dbg_nvm_image:7911(ens3f4)]Collecting a debug feature ["nvram image 4"]
[qed_dbg_dump:7790(ens3f3)]Collecting a debug feature ["idle_chk"]
[qed_dbg_dump:7790(ens3f3)]Collecting a debug feature ["idle_chk"]
[qed_dbg_dump:7790(ens3f3)]Collecting a debug feature ["reg_fifo"]
[qed_dbg_dump:7790(ens3f3)]Collecting a debug feature ["igu_fifo"]
[qed_dbg_dump:7790(ens3f3)]Collecting a debug feature ["protection_override"]
[qed_dbg_dump:7790(ens3f3)]Collecting a debug feature ["fw_asserts"]
[qed_dbg_dump:7790(ens3f3)]Collecting a debug feature ["grc"]
[qed_dbg_dump:7790(ens3f3)]Collecting a debug feature ["mcp_trace"]
[qed_dbg_nvm_image:7911(ens3f3)]Collecting a debug feature ["nvram image 2"]
[qed_dbg_nvm_image:7911(ens3f3)]Collecting a debug feature ["nvram image 3"]
[qed_dbg_nvm_image:7911(ens3f3)]Collecting a debug feature ["nvram image 4"]
[qed_dbg_dump:7790(ethX)]Collecting a debug feature ["idle_chk"]
[qed_dbg_dump:7790(ethX)]Collecting a debug feature ["idle_chk"]
[qed_dbg_dump:7790(ethX)]Collecting a debug feature ["reg_fifo"]
[qed_dbg_dump:7790(ethX)]Collecting a debug feature ["igu_fifo"]
[qed_dbg_dump:7790(ethX)]Collecting a debug feature ["protection_override"]
[qed_dbg_dump:7790(ethX)]Collecting a debug feature ["fw_asserts"]
[qed_dbg_dump:7790(ethX)]Collecting a debug feature ["grc"]
[qed_dbg_dump:7790(ethX)]Collecting a debug feature ["mcp_trace"]
[qed_dbg_nvm_image:7911(ethX)]Collecting a debug feature ["nvram image 2"]
[qed_dbg_nvm_image:7911(ethX)]Collecting a debug feature ["nvram image 3"]
[qed_dbg_nvm_image:7911(ethX)]Collecting a debug feature ["nvram image 4"]