From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A9AC4606A31B for ; Thu, 5 Nov 2026 20:25:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=u9QSvaJn; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=biBcQDj6 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Reply-To:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:Date: Content-Transfer-Encoding:Content-Type:References:In-Reply-To:Cc:To:Subject: From:Message-ID:MIME-Version:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Unsubscribe-Post:List-Owner; bh=b0D2++zCZfvjhjRkeCHIgJAL0z7V717Ngy6s2m74N7A=; b=u9QSvaJnYF6XzSJQUVQuCpWlc+ nJeR2x7hTQnaLNyMdSBlvc2b0QkbQ5zMf1W0/XTQsFLDilPtp2rJQ4QC+X6JDdvgsHX2kEEnT5qv+ orBASqVQb/M85qkZtfxiS5OZ1rUIlWSG4qAfevNRowuf23mDpciGmz7daDlPQqb0dQuyRx/Hh2WcL 93vy2HjMCgaU50FpGTZRRSjP8FPt3btNktk3FfEQPORzmWXPGsPoM2fTMzO/8uy9mdkR0Hq95619z hC7sZU/3B9y2pkzM181NqNPl5ICE/rYpEz5Ac1tc7cXbHPy7GJh66kpNBN1O8843bM7nL3xOc8KV2 anGsSPnQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.100.1 #2 (Red Hat Linux)) id 1xP3Bh-0000000ALQl-06V4; Thu, 05 Nov 2026 19:31:53 +0000 Received: from tor.source.kernel.org ([2600:3c04:e001:324:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.100.1 #2 (Red Hat Linux)) id 1xP39t-0000000AKgm-2CrA for kexec@lists.infradead.org; Thu, 05 Nov 2026 19:30:04 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id DF957601C8; Thu, 5 Nov 2026 19:30:00 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id CBDCB1F00A1B; Thu, 5 Nov 2026 19:29:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793907000; bh=b0D2++zCZfvjhjRkeCHIgJAL0z7V717Ngy6s2m74N7A=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=biBcQDj6b5nEnEvvkhlM1t3pYvLEhlUmJZntrNj8PmC+/8S7e2GAV4U2nJtkIt6lm w2reHjBlHUvRO7ufKHLU/cu9NIcrdZS/QNsjkkcCIQtudOdeNiZ4gnIuiWj1EUhsA0 wLwuee7OSv/L9MLY5Dk1FPdohxJpgBQjXWFtlVWYc/tV5I02GkwXABkE4xEQP+YsBd SN1S/9tIP3nfP49YMFvAflaO2LH8vRaKR1oZ0flajKfd6e0qH53GoNxOVYF79PgSIk +HT6s1etrrUyTiCOLvoDd6TEvKEM8PctNC/h2qlEO/MtHh12Lz0HvVTGM1t9FKNGsl udtTbvU8PQXXg== Message-ID: From: sashiko-bot@kernel.org Subject: Re: [PATCH RESEND v2 35/51] proc: warn about entries left in /proc/net of a dying namespace To: "Christian Brauner" Cc: "Linus Torvalds" , "Jann Horn" , "Josef Bacik" , "Chris Mason" , "Jeff Layton" , NeilBrown , "Eric Dumazet" , "Thomas Gleixner" , "Al Viro" , "Jonathan Corbet" , "Christoph Hellwig" , "Greg Kroah-Hartman" , "Joel Granados" , "Kees Cook" , "Jan Kara" , "Jan Kara" , linux-s390@vger.kernel.org, coreteam@netfilter.org, kexec@lists.infradead.org, linux-pci@vger.kernel.org, linux-hwmon@vger.kernel.org, linux-usb@vger.kernel.org, samba-technical@lists.samba.org, linux-m68k@lists.linux-m68k.org, linux-serial@vger.kernel.org, "Takashi Iwai" , linux-ext4@vger.kernel.org, "Chuck Lever" , tytso@mit.edu, "Heiko Carstens" , "Vasily Gorbik" , "Alexander Gordeev" , "Christian Borntraeger" In-Reply-To: <20261104-work-procfs-bugfixes-v2-35-021c84d852e0@kernel.org> References: <20261104-work-procfs-bugfixes-v2-0-021c84d852e0@kernel.org> <20261104-work-procfs-bugfixes-v2-35-021c84d852e0@kernel.org> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Thu, 05 Nov 2026 19:29:58 +0000 X-BeenThere: kexec@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: sashiko-reviews@lists.linux.dev Sender: "kexec" X-Spam-Status: No, score=-10.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 X-Archived-By: > proc_net_ns_exit() runs after all the other pernet exits and frees > net->proc_net right after removing "stat" from it. An entry that some > pernet exit forgot to remove is left with a freed ->parent, and so > PDE_NET() hands seq_open_net() and single_open_net() a freed struct net > when the entry is opened through a file descriptor that someone kept. >=20 > There is no such entry in the tree that we know of, but nothing would > tell us about one either. So warn about it like remove_proc_entry() > does for a directory that isn't empty. >=20 > Reported-by: Chris Mason > Fixes: e9720acd728a ("[NET]: Make /proc/net a symlink on /proc/self/net (= v3)") > Signed-off-by: Christian Brauner (Amutable) Sashiko has reviewed this patch and found no issues. --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20261104-work-procf= s-bugfixes-v2-0-021c84d852e0@kernel.org?part=3D35