On Tue, Oct 21, 2025 at 11:11:25AM +0200, Miquel Sabaté Solà wrote:
> When evicting an inode the first thing we do is to setup tracing for it,
> which implies fetching the root's id. But in btrfs_evict_inode() the
> root might be NULL, as implied in the next check that we do in
> btrfs_evict_inode().
>
> Hence, we either should set the ->root_objectid to 0 in case the root is
> NULL, or we move tracing setup after checking that the root is not
> NULL. Setting the rootid to 0 at least gives us the possibility to trace
> this call even in the case when the root is NULL, so that's the solution
> taken here.
>
> Fixes: 1abe9b8a138c ("Btrfs: add initial tracepoint support for btrfs")
> Reported-by: [email protected]
> Closes: https://syzkaller.appspot.com/bug?extid=d991fea1b4b23b1f6bf8
> Signed-off-by: Miquel Sabaté Solà <[email protected]>
Added to for-next, thanks.
