From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 2D38D1F94A for ; Wed, 7 Jan 2026 05:23:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.137.202.133 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767763396; cv=none; b=hucxgXDBdn2H5HqJuMiZSqaNBk8SLfBwr1k66QIZEVHWL3Vh2fqZupdHHy+llyPfFyAQbTkzr8u7Q13i23Qygd88qCyJG6lJXYlMAgeb45vVHMUM50enQhYwJ8PRasXXGlNy0VcRhQRnkX5RYNyaew94LAkHVgsg/iUUxEa4Uk4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767763396; c=relaxed/simple; bh=VyBLTkOhh5AkMS/gSXiV58owvakwYOY939hTfpHhuwQ=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=fbVcfsKgb3sXjWH8xoko2PT41Fs3mSOUm5Chc93WccQ8MqQPWqlMAJrX7YN7xjyxzvN5Fstsrm3aBFjd4J54+s1NIdUvnOyq0+E+eLIOKXhPzfyrSpSVi3+8Oudnp+qjnjuXlSphAop29wQmcM628dOy6tsTBvaI0qpXyQSpz/c= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=kRtq2YhZ; arc=none smtp.client-ip=198.137.202.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="kRtq2YhZ" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=In-Reply-To:Content-Transfer-Encoding :Content-Type:MIME-Version:References:Message-ID:Subject:Cc:To:From:Date: Sender:Reply-To:Content-ID:Content-Description; bh=F3BhaX5X+5amMTHmj1JVgN5gQNPiYioGK3Bt1bQ7ncs=; b=kRtq2YhZ1dYHTCFKbPYsLx4b92 vuvuQksff77ULJ/6wRzUzGFHeINRtJItjNCTJ/odiiFiiNcD5RouxXoPs6+OFPAoY/IxuOlK5ZDnL UC7kTyrmDrlAxeO5CYOTrfUolMjfKiWesf9inTitDSxpBi9jM/bC3HzTLzQFZRdbeFpTGfrnwUDci 5mmJQunFQGd5TfI7sls7Q/Uf8T1k8QVI0kOR+3TwNbAByavERW8BxYuvmE5BkowCYNuOKefpj9YL9 qWbW9XZhzi9nS8JmKc88+9sEfKmWKPzfwoFKXkIiEdQyFALJhjCpbaXp+rkn/eOBJp33INWsjOXLB cD/PlTNw==; Received: from hch by bombadil.infradead.org with local (Exim 4.98.2 #2 (Red Hat Linux)) id 1vdM0b-0000000EAz1-0UFp; Wed, 07 Jan 2026 05:23:01 +0000 Date: Tue, 6 Jan 2026 21:23:01 -0800 From: "hch@infradead.ori" To: Trond Myklebust Cc: "hch@infradead.ori" , "anna@kernel.org" , "linux-nfs@vger.kernel.org" Subject: Re: [PATCH] NFS: Fix directory delegation verifier checks Message-ID: References: <20251219201344.380279-1-anna@kernel.org> <53d40f4781783f9b79196bb30975b788be8bb969.camel@hammerspace.com> <1df4bb7ff3e6fd607c1811d75fcd6dcb860e320e.camel@kernel.org> Precedence: bulk X-Mailing-List: linux-nfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <1df4bb7ff3e6fd607c1811d75fcd6dcb860e320e.camel@kernel.org> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html On Tue, Jan 06, 2026 at 01:32:54PM -0500, Trond Myklebust wrote: > Sigh... One last patch on top of all the previous ones, but if we hit > another issue I think we need to consider just disabling directory > delegations on the client until all the remaining issues can be fixed > in the next release. This still crasheѕ generic/633: generic/633 4s ... [ 73.075526] run fstests generic/633 at 2026-01-07 05:21:37 [ 73.286318] process 'vfstest' launched '/dev/fd/4/file1' with NULL argv: empty string added [ 73.314625] Oops: general protection fault, probably for non-canonical address 0xcccccccccccccd50: 0000 [#1] SMP NOPTI [ 73.315391] CPU: 1 UID: 0 PID: 100 Comm: kworker/u8:3 Tainted: G N 6.19.0-rc4+ #4540 PREEMPT(full) [ 73.316043] Tainted: [N]=TEST [ 73.316229] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 73.316786] Workqueue: rpciod rpc_async_schedule [ 73.317066] RIP: 0010:nfs_inode_find_state_and_recover+0x9c/0x260 [ 73.317430] Code: 01 0f 85 83 00 00 00 49 8b 84 24 80 00 00 00 4c 8d 60 80 48 39 c3 0f 84 68 01 00 00 4d 8b 7c 24 60 4d 85 ff 74 e1 48 8b 7d 00 <49> 39 bf 84 00 00 00 75 af 8b 4d 08 41 39 8f 8c 00 00 00 75 a3 48 [ 73.318513] RSP: 0018:ffffc900001bfd00 EFLAGS: 00010286 [ 73.318868] RAX: ffff88810cfb98e0 RBX: ffff8881d68d8c50 RCX: 0000000000000000 [ 73.319354] RDX: ffff88810330a0c0 RSI: ffff88811a86d914 RDI: b6162427695ded30 [ 73.319832] RBP: ffff88811a86d918 R08: ffff88810c685100 R09: ffff88810c685130 [ 73.320270] R10: 0000000000000003 R11: fefefefefefefeff R12: ffff88810cfb9860 [ 73.320698] R13: ffff8881179b2800 R14: 0000000000000000 R15: cccccccccccccccc [ 73.321135] FS: 0000000000000000(0000) GS:ffff8882b363d000(0000) knlGS:0000000000000000 [ 73.321640] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 73.321994] CR2: 0000559277cef238 CR3: 0000000161792002 CR4: 0000000000772ef0 [ 73.322422] PKRU: 55555554 [ 73.322592] Call Trace: [ 73.322749] [ 73.322889] nfs4_delegreturn_done+0x1b7/0x380 [ 73.323173] ? __pfx_rpc_exit_task+0x10/0x10 [ 73.323475] rpc_exit_task+0x5c/0x170 [ 73.323755] __rpc_execute+0xb1/0x490 [ 73.324000] rpc_async_schedule+0x2a/0x40 [ 73.324257] process_one_work+0x16c/0x330 [ 73.324515] worker_thread+0x254/0x3a0 [ 73.324762] ? __pfx_worker_thread+0x10/0x10 [ 73.325042] kthread+0x117/0x230 [ 73.325303] ? __pfx_kthread+0x10/0x10 [ 73.325557] ? __pfx_kthread+0x10/0x10 [ 73.325812] ret_from_fork+0x1b6/0x200 [ 73.326045] ? __pfx_kthread+0x10/0x10 [ 73.326278] ret_from_fork_asm+0x1a/0x30 [ 73.326535] [ 73.326681] Modules linked in: kvm_intel kvm irqbypass [ 73.327046] ---[ end trace 0000000000000000 ]---