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From: Kent Overstreet <kent.overstreet@linux.dev>
To: Tiezhu Yang <yangtiezhu@loongson.cn>, 
	Guo Xuenan <guoxuenan@huawei.com>, Rajat Asthana <thisisrast7@gmail.com>, 
	Gao Xiang <xiang@kernel.org>, Nick Terrell <terrelln@fb.com>
Cc: linux-bcachefs@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: lz4 hc buffer overflow
Message-ID: <js2vmwcgwyx5kxq3csunc3piwkpfsebg3u2zewok6iis5wgn2e@eyy4fzryskj7>
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reference https://github.com/koverstreet/bcachefs/issues/658

It looks like something is off with the bounds checking in LZ4 HC; I
haven't dug too deep yet. Never saw this with regular LZ4.

Anyone know anything? Are we missing a fix from the userspace library?