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

Kent Overstreet <[email protected]> Sun, 3 Aug 2025 23:27:39 -0400

Newsgroups	org.kernel.vger.linux-bcachefs,org.kernel.vger.linux-kernel,org.kernel.vger.linux-unionfs
Message-ID	<xu7rlriapup7s5kbss6q3lb45fgrpjt3t7ef7fidj2ggmu54vf@rl5vw6zbbudh>

On Mon, Aug 04, 2025 at 04:23:12AM +0100, Al Viro wrote:
> On Mon, Aug 04, 2025 at 11:02:54AM +0800, Alan Huang wrote:
> > +cc overlayfs
> 
> Sigh...
> 
> 2) what the hell is bch2_symlink() need to lock the new inode for?
> page_symlink() doesn't need that; are there any bcachefs-specific reasons
> to bother with that?

No, there isn't. I'll look it over and kill that tomorrow...