From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 4DAF034D4D8; Tue, 16 Dec 2025 11:46:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765885563; cv=none; b=YQor3aJ4/2eTanOTe4bUHMbTnBM+c74yEIlim159Qjq5dNU+toi7acBymFt5JzgxD4CdKAch7W+ZNhMWErFinvzZmCxyKxS1rBrOG5nFkWq1MMx7Z5AnVWz29PPC08GiYHzB7/Q+6DAIDH1djF3JaTh4fkei4HmgYazU1pBddYs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765885563; c=relaxed/simple; bh=roPoDtzi87iV6X+yoyaDyJhVUcu7AlkzfdMELdWLmFY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=lTBRi6qMhGir5/eTQXdhujTxdSz2XwCI4MKDlewm+CyuriNqy+Kbb4i4Q7pernkJc6vdNNlEXgKaLYqg4ol/ThE1Q+YqtHP4CnVv+WOoXTWfJHKgZGy6A7bf9O9EMTa471sOALuIci2qicLohjp+t4jFX73iiQXPTLrpN+NGP1E= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=oHwqdvyt; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="oHwqdvyt" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B3557C4CEF1; Tue, 16 Dec 2025 11:46:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1765885563; bh=roPoDtzi87iV6X+yoyaDyJhVUcu7AlkzfdMELdWLmFY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=oHwqdvytTRgMAwef8Ng3ir3pv7tS6OMD7+VqcN2GolXdIxIEG3VWctOE4Jy7IhSq9 KTpXpEShPb7pGvSfJQUXU2nXQpcRPXDjj5vG4xYG8Rua4CepMb0ZDYUd5BdOClW/NM jfm5rPmkfQ67PBQvt4hjYKf0Hrun6mRgvl3NvBnk= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Alexander Mikhalitsyn , Oleg Nesterov , Christian Brauner , Sasha Levin Subject: [PATCH 6.17 132/507] pidfs: add missing BUILD_BUG_ON() assert on struct pidfd_info Date: Tue, 16 Dec 2025 12:09:33 +0100 Message-ID: <20251216111350.312274985@linuxfoundation.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20251216111345.522190956@linuxfoundation.org> References: <20251216111345.522190956@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.17-stable review patch. If anyone has any objections, please let me know. ------------------ From: Christian Brauner [ Upstream commit d8fc51d8fa3b9894713e7eebcf574bee488fa3e1 ] Validate that the size of struct pidfd_info is correctly updated. Link: https://patch.msgid.link/20251028-work-coredump-signal-v1-4-ca449b7b7aa0@kernel.org Fixes: 1d8db6fd698d ("pidfs, coredump: add PIDFD_INFO_COREDUMP") Reviewed-by: Alexander Mikhalitsyn Reviewed-by: Oleg Nesterov Signed-off-by: Christian Brauner Signed-off-by: Sasha Levin --- fs/pidfs.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/pidfs.c b/fs/pidfs.c index 2c9c7636253af..3fde97d2889ba 100644 --- a/fs/pidfs.c +++ b/fs/pidfs.c @@ -306,6 +306,8 @@ static long pidfd_info(struct file *file, unsigned int cmd, unsigned long arg) const struct cred *c; __u64 mask; + BUILD_BUG_ON(sizeof(struct pidfd_info) != PIDFD_INFO_SIZE_VER1); + if (!uinfo) return -EINVAL; if (usize < PIDFD_INFO_SIZE_VER0) -- 2.51.0