Bug#1120598: ls input/output error ("NFS: readdir(/) returns -5") on krb5 NFSv4 client using SHA2
- To: Chuck Lever <chuck.lever@oracle.com>
- Cc: Trond Myklebust <trondmy@kernel.org>, Anna Schumaker <anna@kernel.org>, Salvatore Bonaccorso <carnil@debian.org>, "1120598@bugs.debian.org" <1120598@bugs.debian.org>, Jeff Layton <jlayton@kernel.org>, NeilBrown <neil@brown.name>, Scott Mayhew <smayhew@redhat.com>, Steve Dickson <steved@redhat.com>, Olga Kornievskaia <okorniev@redhat.com>, Dai Ngo <Dai.Ngo@oracle.com>, Tom Talpey <tom@talpey.com>, linux-nfs@vger.kernel.org, linux-kernel@vger.kernel.org
- Subject: Bug#1120598: ls input/output error ("NFS: readdir(/) returns -5") on krb5 NFSv4 client using SHA2
- From: "Tyler W. Ross" <TWR@tylerwross.com>
- Date: Mon, 17 Nov 2025 18:38:57 +0000
- Message-id: <[🔎] xQVfdQl4QH2gCXCc1p3b183RlIulJzqZJfFUGwXVjzolxMXDJpacKVIHo-93VLFNbQWPjRJiR30Np_rLudFr49uNZxlKeZwkfhWH1qeiGhc=@tylerwross.com>
- Reply-to: "Tyler W. Ross" <TWR@tylerwross.com>, 1120598@bugs.debian.org
- In-reply-to: <[🔎] e5112807-a427-4762-b7b9-ecaa95fa0482@oracle.com>
- References: <[🔎] 176298368872.955.14091113173156448257.reportbug@nfsclient-sid.ipa.twrlab.net> <[🔎] AVpI5XolCCA38sGzxlfk6azQI9oUAxafUVl9B7B1WgJEmGgSAQq5nvulQO6P_RQqjBp3adqasHFsodhAAxai0dcp5scRMJk0dLsGMQeSiew=@tylerwross.com> <[🔎] fVv3cF7Ulh3cKUP17C98gh_uOv9BcMlMpsIh1Nv5_0tdw-75PKiPJgIEP5o2jBVry7orwz7jeiGQenfCbuUxyj5JFstbx3RTFYr223qDmV0=@tylerwross.com> <[🔎] a6d1435b-f507-49eb-b80c-4322dc7e1157@oracle.com> <[🔎] Y79HV0VGpScPYqI_dDxeItkX2UZwSdReaUOpIeMeZXq2HLsHf5J_PTQqr7HrBYygICRsn-OB89QPrxPzjgv2smuzTThUPy_3fq_N1NprlUg=@tylerwross.com> <[🔎] 4a63ad3d-b53a-4eab-8ffb-dd206f52c20e@oracle.com> <902ff4995d8e75ad1cd2196bf7d8da42932fba35.camel@kernel.org> <[🔎] ji2_uZ3RNtBdATHSokoxSrIXMAi4zh2jZXEd0WownMtXo_WNIseAeeDZoBFjT54nCE1Iw0PcGgfORC5p39CP9KGqjY6T2wqeBRGonjIjfXM=@tylerwross.com> <[🔎] e5112807-a427-4762-b7b9-ecaa95fa0482@oracle.com> <[🔎] 176298368872.955.14091113173156448257.reportbug@nfsclient-sid.ipa.twrlab.net>
On Monday, November 17th, 2025 at 6:41 AM, Chuck Lever <chuck.lever@oracle.com> wrote:
> > Is this gssd mishandling some setup/initialization?
> > Or is there a miscalculation happening somewhere further up?
>
> Does Debian's user space Kerberos support the sha2 enctypes?
Appears to. MIT Kerberos docs list sha2 enctypes support on releases
>=1.15 . Debian 13 and Fedora 43 are both shipping 1.21.3 . Debian
unstable currently has 1.22.1 . I haven't had any issues managing
sha2 keytabs, tickets, etc. with the userspace tools. And at least some
NFS operations other than READDIR do seem to work, though I haven't
tested that beyond observing cat, stat, and touch are functional.
TWR
Reply to: