From: Al Viro <viro@zeniv.linux.org.uk>
To: Alan Huang <mmpgouride@gmail.com>
Cc: syzbot <syzbot+7836a68852a10ec3d790@syzkaller.appspotmail.com>,
kent.overstreet@linux.dev, linux-bcachefs@vger.kernel.org,
linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com,
miklos@szeredi.hu, amir73il@gmail.com,
linux-unionfs@vger.kernel.org
Subject: Re: [syzbot] [bcachefs?] possible deadlock in bch2_symlink
Date: Mon, 4 Aug 2025 04:23:12 +0100 [thread overview]
Message-ID: <20250804032312.GX222315@ZenIV> (raw)
In-Reply-To: <2F4A26BA-821F-4916-A8F6-71EDBA89A701@gmail.com>
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().
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?
next prev parent reply other threads:[~2025-08-04 3:23 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-09-29 7:31 [syzbot] [bcachefs?] possible deadlock in bch2_symlink syzbot
2025-02-08 9:14 ` syzbot
2025-08-04 3:02 ` Alan Huang
2025-08-04 3:23 ` Al Viro [this message]
2025-08-04 3:27 ` Kent Overstreet
2025-08-18 9:19 ` Amir Goldstein
2025-08-18 10:41 ` syzbot
2025-08-04 23:12 ` Forwarded: syzbot
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