linux-kernel - Re: Forwarded: [PATCH] ipc/mqueue: fix dentry refcount imbalance in prepare

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Message-ID: <20251130091005.GU3538@ZenIV>
Date: Sun, 30 Nov 2025 09:10:05 +0000
From: Al Viro <viro@...iv.linux.org.uk>
To: syzbot <syzbot+b74150fd2ef40e716ca2@...kaller.appspotmail.com>
Cc: linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com,
	Christian Brauner <christian@...uner.io>,
	Stephen Rothwell <sfr@...b.auug.org.au>
Subject: Re: Forwarded: [PATCH] ipc/mqueue: fix dentry refcount imbalance in
 prepare_open()

On Sun, Nov 30, 2025 at 08:46:12AM +0000, Al Viro wrote:

> Mismerge in -next, actually.

... in vfs.all, fixed there since then.

commit 73612a36da1a09df19e205c6c6fd8a22ed441716
Merge: 6fda44ca8203 def1b1ed02b8
Author: Christian Brauner <brauner@...nel.org>
Date:   Thu Nov 27 11:56:07 2025 +0100
 
    Merge branch 'vfs-6.19.fd_prepare' into vfs.all
    
    Signed-off-by: Christian Brauner <brauner@...nel.org>
    
    # Conflicts:
    #       include/linux/cleanup.h
    #       ipc/mqueue.c

is where it happened and it's what -next has pulled.

Currently it's replaced with
commit d6ea5537c1a66a54d34f50d51ad201b1a2319ccf (vfs-common/vfs.all)
Merge: 80019251fa80 65c2c221846e
Author: Christian Brauner <brauner@...nel.org>
Date:   Fri Nov 28 17:32:43 2025 +0100
 
    Merge tag 'vfs-6.19-rc1.fd_prepare' of gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs into vfs.all
    
    vfs-6.19-rc1.fd_prepare
    
    Signed-off-by: Christian Brauner <brauner@...nel.org>
    
    # -----BEGIN PGP SIGNATURE-----
    #
    # iHUEABYKAB0WIQRAhzRXHqcMeLMyaSiRxhvAZXjcogUCaSmOZwAKCRCRxhvAZXjc
    # ouPcAQCFC+L9+ATyKDUpJj/7CS9PbHR9eSnBnwRfgafWY1wl5gD/c/0S7g6f7WTL
    # nZwIMoQCAcUJDQpPlAcfNbUXKkwgWAA=
    # =K19o
    # -----END PGP SIGNATURE-----
    # gpg: Signature made Fri 28 Nov 2025 12:58:31 CET
    # gpg:                using EDDSA key 408734571EA70C78B332692891C61BC06578DCA2
    # gpg: Good signature from "Christian Brauner <christian@...uner.io>" [ultimate]
    # gpg:                 aka "Christian Brauner <christian.brauner@...env.org>" [ultimate]
    # gpg:                 aka "Christian Brauner <brauner@...nel.org>" [ultimate]
    
    # Conflicts:
    #       include/linux/cleanup.h
    #       ipc/mqueue.c

in there, and -next simply hasn't picked it yet.