From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lamorak.hansenpartnership.com (lamorak.hansenpartnership.com [198.37.111.173]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2B0D224C080; Thu, 3 Apr 2025 15:34:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.37.111.173 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743694478; cv=none; b=hbsoTYkmVMn91jGFc4ulnUxJ9h1cPjJR6LRB1z5PMxIIeA/8bIDtGAA2Xz1d97S+EGXPueyaNZihtZEfd1FCkhD8w5ohb41XAxW2ZFr0Yz90DYLmUyLUkGHrnWX0O6BAAmBT3N0rQw+vMmoHTaBWXBTs07F6w4OfDP471ifP4PM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743694478; c=relaxed/simple; bh=ZBJpmSs18I1IKQt2tIETY5sXx/IbeXUHiDZVsE84nVM=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; 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In-Reply-To: <20250403-quartal-kaltstart-eb56df61e784@brauner> References: <20250322-vfs-mount-b08c842965f4@brauner> <174285005920.4171303.15547772549481189907.pr-tracker-bot@kernel.org> <20250401170715.GA112019@unreal> <20250403-bankintern-unsympathisch-03272ab45229@brauner> <20250403-quartal-kaltstart-eb56df61e784@brauner> Autocrypt: addr=James.Bottomley@HansenPartnership.com; prefer-encrypt=mutual; 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MAdnPcDVFzaXJdlAAJdjfg/lyJtAyxifflG8NnXJ3elwGqoBso84XBNWWzbc5VKmatzhYLOvXtfzDhu4mNPv/z7S1HTtRguI0NlH5RVBzSvfzybin9hysE3/+r3C0HJ2xiOHzucNAmG03aztzZYDMTbKQW4bQqeD5MJxT68vBYu8MtzfIe41lSLpb/qlwq1qg0iQElBBgBAgAPBQJUdhaZAhsMBQkA7U4AAAoJEIFK5HwhSFTW3YgH/AyJL2rlCvGrkLcas94ND9Pmn0cUlVrPl7wVGcIV+6I4nrw6u49TyqNMmsYam2YpjervJGgbvIbMzoHFCREi6R9XyUsw5w7GCRoWegw2blZYi5A52xe500+/RruG//MKfOtVUotu3N+u7FcXaYAg9gbYeGNZCV70vI+cnFgq0AEJRdjidzfCWVKPjafTo7jHeFxX7Q22kUfWOkMzzhoDbFg0jPhVYNiEXpNyXCwirzvKA7bvFwZPlRkbfihaiXDE7QKIUtQ10i5kw4C9rqDKwx8F0PaWDRF9gGaKd7/IJGHJaac/OcSJ36zxgkNgLsVX5GUroJ2GaZcR7W9Vppj5H+C4UgRkuRyTEwgqhkjOPQMBBwIDBOySomnsW2SkApXv1zUBaD38dFEj0LQeDEMdSE7bm1fnrdjAYt0f/CtbUUiDaPodQk2qeHzOP6wA/2K6rrjwNIWJAT0EGAEIACcDGyAEFiEE1WBuc8i0YnG+rZrfgUrkfCFIVNYFAmWoM/gFCQSxfmUACgkQgUrkfCFIVNZhTgf/VQxtQ5rgu2aoXh2KOH6naGzPKDkYDJ/K7XCJAq3nJYEpYN8G+F8mL/ql0hrihAsHfjmoDOlt+INa3AcG3v0jDZIMEzmcjAlu7g5NcXS3kntcMHgw3dCgE9eYDaKGipUCubdXvBaZWU6AUlTldaB8FE6u7It7+UO+IW4/L+KpLYKs8V5POInu2rqahlm7vgxY5iv4Txz4EvCW2e4dAlG 8mT2Eh9SkH+YVOmaKsajgZgrBxA7fWmGoxXswEVxJIFj3vW7yNc0C5HaUdYa5iGOMs4kg2ht4s7yy7NRQuh7BifWjo6BQ6k4S1H+6axZucxhSV1L6zN9d+lr3Xo/vy1unzA== Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.50.3 Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Thu, 2025-04-03 at 17:15 +0200, Christian Brauner wrote: > On Thu, Apr 03, 2025 at 10:29:37AM +0200, Christian Brauner wrote: > > On Tue, Apr 01, 2025 at 08:07:15PM +0300, Leon Romanovsky wrote: > > > On Mon, Mar 24, 2025 at 09:00:59PM +0000, > > > pr-tracker-bot@kernel.org=C2=A0wrote: > > > > The pull request you sent on Sat, 22 Mar 2025 11:13:18 +0100: > > > >=20 > > > > > git@gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs > > > > > tags/vfs-6.15-rc1.mount > > > >=20 > > > > has been merged into torvalds/linux.git: > > > > https://git.kernel.org/torvalds/c/fd101da676362aaa051b4f5d8a941bd30= 8603041 > > >=20 > > > I didn't bisect, but this PR looks like the most relevant > > > candidate. > > > The latest Linus's master generates the following slab-use-after- > > > free: > >=20 > > Sorry, did just see this today. I'll take a look now. >=20 > So in light of "Liberation Day" and the bug that caused this splat > it's > time to quote Max Liebermann: >=20 > "Ich kann nicht so viel fressen, wie ich kotzen m=C3=B6chte." > --- a/fs/namespace.c > +++ b/fs/namespace.c > @@ -2478,7 +2478,8 @@ struct vfsmount *clone_private_mount(const > struct path *path) > struct mount *old_mnt =3D real_mount(path->mnt); > struct mount *new_mnt; > =20 > - scoped_guard(rwsem_read, &namespace_sem) > + guard(rwsem_read, &namespace_sem); > + > if (IS_MNT_UNBINDABLE(old_mnt)) > return ERR_PTR(-EINVAL); >=20 Well that's a barfworthy oopsie, yes. However, it does strike me as an easy one to make for a lot of these cleanup.h things since we have a lot of scoped and unscoped variants. We should, at least, get checkpatch to issue a warning about indentation expectations as it does for our other scoped statements like for, while, if etc. It looks quite simple if got my perl right (it's a bit rusty). Regards, James --- diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index 7b28ad331742..805b65098149 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -4347,7 +4347,7 @@ sub process { } =20 # Check relative indent for conditionals and blocks. - if ($line =3D~ /\b(?:(?:if|while|for|(?:[a-z_]+|)for_each[a-z_]+)\s*\(|(= ?:do|else)\b)/ && $line !~ /^.\s*#/ && $line !~ /\}\s*while\s*/) { + if ($line =3D~ /\b(?:(?:if|while|scoped_[a-z_]+|for|(?:[a-z_]+|)for_each= [a-z_]+)\s*\(|(?:do|else)\b)/ && $line !~ /^.\s*#/ && $line !~ /\}\s*while\= s*/) { ($stat, $cond, $line_nr_next, $remain_next, $off_next) =3D ctx_statement_block($linenr, $realcnt, 0) if (!defined $stat);