From nobody Sun Sep 22 14:17:04 2024 X-Original-To: freebsd-fs@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4XBSqz1B2cz5Xb1v for ; Sun, 22 Sep 2024 14:17:19 +0000 (UTC) (envelope-from jdavidlists@gmail.com) Received: from mail-pj1-x1036.google.com (mail-pj1-x1036.google.com [IPv6:2607:f8b0:4864:20::1036]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "WR4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4XBSqy2wLFz4Yhb for ; Sun, 22 Sep 2024 14:17:18 +0000 (UTC) (envelope-from jdavidlists@gmail.com) Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20230601 header.b="R/ALIqNk"; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of jdavidlists@gmail.com designates 2607:f8b0:4864:20::1036 as permitted sender) smtp.mailfrom=jdavidlists@gmail.com Received: by mail-pj1-x1036.google.com with SMTP id 98e67ed59e1d1-2d8815ef6d2so2875513a91.0 for ; Sun, 22 Sep 2024 07:17:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1727014636; x=1727619436; darn=freebsd.org; h=to:subject:message-id:date:from:mime-version:from:to:cc:subject :date:message-id:reply-to; bh=eNiKBsy5jLkoyrExjcSuwS1Dw6br28DKOwjif9SerHk=; b=R/ALIqNk3cduEN1XwHuNDl922LuHnmTAEZN51Sw8hwLECinHWLrpn+3Ue88bfaxFtL isO9KNm0f73V9QEOQOOQbFfkjbmq+nPcVlUdMDckohHV7BEbXmWMD3lLyi5H1OXMHKVW MV9tZK2uFqQcdKT5yqvPBKL3AXjtG8lmCk3+EnoWPy7QL2oQH+pADotFtjfRl6nZL3F5 hvDZPVSldcPVewC32yF4b8Q+KPb9rUBmHUH9k7sVeulq0n2RFOV6BimAKCpIWrLA+dlc oerX7nS+xqfSPs3vG2fokQxFBc/Ju6YQwDNkFtqgWXQrya7WRLzN+IrVUxSSoMEwvOFk MDBw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1727014636; x=1727619436; h=to:subject:message-id:date:from:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=eNiKBsy5jLkoyrExjcSuwS1Dw6br28DKOwjif9SerHk=; b=eRmjsdjeff7UIfarzfNZl6qHzS3Ce8a8qWn/PUATnxhDoZIy1A6Ek/1H+erKZOSbvE 2hX6bshyH0bxuk1GA8Q6MBMS6r/E7XIvEfGsAtpO1bDZWBzBMB4Ia15tgmyCVlT6W0bD Xsk1b8ep9H1oFrfwS+nk1ReJtT/DelyKaC1+1nwL3awrdrIXAfkhQdFZwUVKJY3KjCxv DCr6gHQn2kQt6gidnBXMFWMs8Vc37sFC6whPWyNuNznj7Cl4rqdcNdsB3Q8rOJbl42Vw 6Nzhjduacy7+A7nOKpVhwsGnlC1tj2q4lm1YS51aeXE1jFgXQ8t7j5+DFDmpP8Q/clMX 6X0A== X-Gm-Message-State: AOJu0Yz0yniTizeX9HH7WWgosremL3rSGxP0ChBzebetqLcOflSJqFl+ o3CL94HkkC8LhzrKgj67N/wxUlSWB+w6W4KIaJ7dBgkQ1eJjruAztb47JUH9MWKZGpJt0xaSzuY pC1puqjROUKA98cKq8ZKwZdoJuDg9H/OcIq4= X-Google-Smtp-Source: AGHT+IGf0M5s/jnYHBPsdlH6RlkpVcXQMIWvEYZzO9VDHahilcfhCB14HraKIGgOz5rq09QlgAcoBqtveEps4QTpQng= X-Received: by 2002:a17:90b:1c88:b0:2da:8c08:6a29 with SMTP id 98e67ed59e1d1-2dd7f3d4161mr10362186a91.8.1727014636067; Sun, 22 Sep 2024 07:17:16 -0700 (PDT) List-Id: Filesystems List-Archive: https://lists.freebsd.org/archives/freebsd-fs List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-fs@FreeBSD.org MIME-Version: 1.0 From: J David Date: Sun, 22 Sep 2024 10:17:04 -0400 Message-ID: Subject: panic: nfsv4root ref cnt cpuid = 1 To: FreeBSD FS Content-Type: text/plain; charset="UTF-8" X-Spamd-Result: default: False [-3.94 / 15.00]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.94)[-0.942]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20230601]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36]; MIME_GOOD(-0.10)[text/plain]; RCVD_TLS_LAST(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; ARC_NA(0.00)[]; FROM_HAS_DN(0.00)[]; MIME_TRACE(0.00)[0:+]; RCPT_COUNT_ONE(0.00)[1]; FREEMAIL_ENVFROM(0.00)[gmail.com]; FREEMAIL_FROM(0.00)[gmail.com]; TO_DN_ALL(0.00)[]; DKIM_TRACE(0.00)[gmail.com:+]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim]; MID_RHS_MATCH_FROMTLD(0.00)[]; PREVIOUSLY_DELIVERED(0.00)[freebsd-fs@freebsd.org]; FROM_EQ_ENVFROM(0.00)[]; TAGGED_FROM(0.00)[]; MLMMJ_DEST(0.00)[freebsd-fs@freebsd.org]; RCVD_COUNT_ONE(0.00)[1]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; MISSING_XM_UA(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[2607:f8b0:4864:20::1036:from] X-Rspamd-Queue-Id: 4XBSqy2wLFz4Yhb X-Spamd-Bar: --- After upgrading to 14.1-RELEASE-p4, we have a machine that spontaneously reboots every day or so with the message above. The stack trace from dmesg.boot shows: panic: nfsv4root ref cnt cpuid = 1 time = 1727011803 KDB: stack backtrace: #0 0xffffffff80b7fefd at kdb_backtrace+0x5d #1 0xffffffff80b32bd1 at vpanic+0x131 #2 0xffffffff80b32a93 at panic+0x43 #3 0xffffffff809da294 at nfsv4_relref+0x34 #4 0xffffffff809e5723 at nfscl_openrelease+0x63 #5 0xffffffff809f9eef at nfsrpc_lookup+0x87f #6 0xffffffff80a0e2fd at nfs_lookup+0x43d #7 0xffffffff80c0341a at vop_sigdefer+0x2a #8 0xffffffff8302c3a7 at null_lookup+0xc7 #9 0xffffffff80c08745 at vfs_lookup+0x425 #10 0xffffffff80c079b8 at namei+0x238 #11 0xffffffff80c2d2da at vn_open_cred+0x53a #12 0xffffffff80c239a8 at openatfp+0x268 #13 0xffffffff80c236b8 at sys_open+0x28 #14 0xffffffff810011c0 at amd64_syscall+0x100 #15 0xffffffff80fd765b at fast_syscall_common+0xf8 Unfortunately this machine is managed with freebsd-update and has no swap partition usable for a dump file so my debugging options are a little limited. I'll see what I can do about that. There are a number of nfsv4.2 filesystems mounted on this machine, but knowing that it's related to releasing locks, there are a couple of potentially relevant factors. - some (but not all) NFSv4.2 filesystems are mounted oneopenown - some (but not all) of the NFSV4.2 filesystems are mounted nolockd Both of those seem like the sort of thing that might lead to releasing a reference that's already released while releasing an open. What could I do to debug this further? Thanks for any advice.