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Groups > linux.debian.bugs.dist > #1270042

Bug#1120598: ls input/output error ("NFS: readdir(/) returns -5") on krb5 NFSv4 client using SHA2

From "Tyler W. Ross" <TWR@tylerwross.com>
Newsgroups linux.debian.bugs.dist, linux.kernel, linux.debian.kernel
Subject Bug#1120598: ls input/output error ("NFS: readdir(/) returns -5") on krb5 NFSv4 client using SHA2
Date 2025-11-13 19:10 +0100
Message-ID <LQJVD-cIsP-1@gated-at.bofh.it> (permalink)
References (2 earlier) <LQJ9g-cHSX-5@gated-at.bofh.it> <LQJ9g-cHSX-3@gated-at.bofh.it> <LQJVD-cIsP-3@gated-at.bofh.it> <LQqSZ-cvae-3@gated-at.bofh.it> <LQJVD-cIsP-3@gated-at.bofh.it>
Organization linux.* mail to news gateway

Cross-posted to 3 groups.

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On Thursday, November 13th, 2025 at 10:47 AM, Chuck Lever <chuck.lever@oracle.com> wrote:

> > ls-969 [003] ..... 270.327063: rpc_xdr_recvfrom: task:00000008@00000005 head=[0xffff8895c29fef64,140] page=4008(88) tail=[0xffff8895c29feff0,36] len=988
> > ls-969 [003] ..... 270.327067: rpc_xdr_overflow: task:00000008@00000005 nfsv4 READDIR requested=8 p=0xffff8895c29fefec end=0xffff8895c29feff0 xdr=[0xffff8895c29fef64,140]/4008/[0xffff8895c29feff0,36]/988
> 
> 
> Here's the problem. This is a sign of an XDR decoding issue. If you
> capture the traffic with Wireshark, does Wireshark indicate where the
> XDR is malformed?

Wireshark appears to decode the READDIR reply without issue. Nothing is obviously marked as malformed, and values all appear sane when spot-checking fields in the decoded packet.


TWR

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Bug#1120598: nfs-common: ls input/output error ("NFS: readdir(/) returns -5") on krb5 NFSv4 client using SHA2 "Tyler W. Ross" <twr+debbugs@tylerwross.com> - 2025-11-12 22:50 +0100
  Bug#1120598: ls input/output error ("NFS: readdir(/) returns -5") on krb5 NFSv4 client using SHA2 Salvatore Bonaccorso <carnil@debian.org> - 2025-11-13 06:10 +0100
  Bug#1120598: ls input/output error ("NFS: readdir(/) returns -5") on krb5 NFSv4 client using SHA2 "Tyler W. Ross" <TWR@tylerwross.com> - 2025-11-13 18:20 +0100
  Bug#1120598: ls input/output error ("NFS: readdir(/) returns -5") on krb5 NFSv4 client using SHA2 "Tyler W. Ross" <TWR@tylerwross.com> - 2025-11-13 19:10 +0100
  Bug#1120598: ls input/output error ("NFS: readdir(/) returns -5") on krb5 NFSv4 client using SHA2 "Tyler W. Ross" <TWR@tylerwross.com> - 2025-11-13 20:00 +0100
  Bug#1120598: ls input/output error ("NFS: readdir(/) returns -5") on krb5 NFSv4 client using SHA2 "Tyler W. Ross" <TWR@tylerwross.com> - 2025-11-14 05:40 +0100
    Bug#1120598: ls input/output error ("NFS: readdir(/) returns -5") on krb5 NFSv4 client using SHA2 "Tyler W. Ross" <TWR@tylerwross.com> - 2025-11-14 06:20 +0100
  Bug#1120598: ls input/output error ("NFS: readdir(/) returns -5") on krb5 NFSv4 client using SHA2 "Tyler W. Ross" <TWR@tylerwross.com> - 2025-11-16 01:50 +0100
  Bug#1120598: ls input/output error ("NFS: readdir(/) returns -5") on krb5 NFSv4 client using SHA2 Trond Myklebust <trondmy@kernel.org> - 2025-11-16 19:30 +0100
    Bug#1120598: ls input/output error ("NFS: readdir(/) returns -5") on krb5 NFSv4 client using SHA2 "Tyler W. Ross" <TWR@tylerwross.com> - 2025-11-17 06:30 +0100
      Bug#1120598: ls input/output error ("NFS: readdir(/) returns -5") on krb5 NFSv4 client using SHA2 Scott Mayhew <smayhew@redhat.com> - 2025-11-18 00:10 +0100
    Bug#1120598: ls input/output error ("NFS: readdir(/) returns -5") on krb5 NFSv4 client using SHA2 Scott Mayhew <smayhew@redhat.com> - 2025-11-18 00:10 +0100
      Bug#1120598: ls input/output error ("NFS: readdir(/) returns -5") on krb5 NFSv4 client using SHA2 "Tyler W. Ross" <TWR@tylerwross.com> - 2025-11-18 05:20 +0100
        Bug#1120598: ls input/output error ("NFS: readdir(/) returns -5") on krb5 NFSv4 client using SHA2 Scott Mayhew <smayhew@redhat.com> - 2025-11-18 19:00 +0100
          Bug#1120598: ls input/output error ("NFS: readdir(/) returns -5") on krb5 NFSv4 client using SHA2 "Tyler W. Ross" <TWR@tylerwross.com> - 2025-11-19 00:50 +0100
  Bug#1120598: ls input/output error ("NFS: readdir(/) returns -5") on krb5 NFSv4 client using SHA2 "Tyler W. Ross" <TWR@tylerwross.com> - 2025-11-17 19:50 +0100
  Bug#1120598: ls input/output error ("NFS: readdir(/) returns -5") on krb5 NFSv4 client using SHA2 "Tyler W. Ross" <TWR@tylerwross.com> - 2025-11-18 05:40 +0100
  Bug#1120598: ls input/output error ("NFS: readdir(/) returns -5") on krb5 NFSv4 client using SHA2 Scott Mayhew <smayhew@redhat.com> - 2025-11-19 14:40 +0100
  Bug#1120598: ls input/output error ("NFS: readdir(/) returns -5") on krb5 NFSv4 client using SHA2 "Tyler W. Ross" <TWR@tylerwross.com> - 2025-11-19 18:30 +0100

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