net: amd-xgbe: Fix skb data length underflow

mainline inclusion
from mainline-v5.17-rc3
commit 5aac9108
category: bugfix
bugzilla: https://gitee.com/src-openeuler/kernel/issues/IA72MM
CVE: CVE-2022-48743

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5aac9108a180fc06e28d4e7fb00247ce603b72ee



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There will be BUG_ON() triggered in include/linux/skbuff.h leading to
intermittent kernel panic, when the skb length underflow is detected.

Fix this by dropping the packet if such length underflows are seen
because of inconsistencies in the hardware descriptors.

Fixes: 622c36f1 ("amd-xgbe: Fix jumbo MTU processing on newer hardware")
Suggested-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Link: https://lore.kernel.org/r/20220127092003.2812745-1-Shyam-sundar.S-k@amd.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Zheng Zucheng <zhengzucheng@huawei.com>