Re: BUG: kernel NULL pointer dereference when using zstd

On Thu, Aug 20, 2020 at 07:31:15AM +0800, Qu Wenruo wrote:

On 2020/8/20 上午7:14, Daniel Martinez wrote:

quoted

Hello,

I have encountered a bug when using zstd compression (I assume that's
what caused it, but I could be wrong) on the Debian kernel 5.7.10-1.

It's not zstd I guess, but a generic compression bug.

It's fixed by the upstream commit 1e6e238c3002 ("btrfs: inode: fix NULL
pointer dereference if inode doesn't need compression").

It's not yet merged into v5.7.y stable branch, I guess I need to
backport it manually then.

The commit is in 5.4, 5.7 and 5.8 queue, so the next stable release will
have it.