Re: [syzbot] [bcachefs?] possible deadlock in bch2_symlink

Amir Goldstein <[email protected]> Mon, 18 Aug 2025 11:19:43 +0200
Newsgroups org.kernel.vger.linux-bcachefs,org.kernel.vger.linux-kernel,org.kernel.vger.linux-unionfs
Message-ID <CAOQ4uxiPPb70mx0Pr4Ph6hw2j63Q8=PZaxBx3N0KP=d7Ko=1KQ@mail.gmail.com>
On Mon, Aug 4, 2025 at 5:23 AM Al Viro <[email protected]> wrote:
>
> On Mon, Aug 04, 2025 at 11:02:54AM +0800, Alan Huang wrote:
> > +cc overlayfs
>
> Sigh...
>
> 1) ovl_copy_up_workdir() should lock wdir with I_MUTEX_PARENT, same
> as filename_create().

#syz test: https://github.com/amir73il/linux ovl-fixes