[Bug time/30111] New: lchmod test fails after 2038 on 32 bits systems

[Bug time/30111] New: lchmod test fails after 2038 on 32 bits systems

[blemouzy at centralp dot fr]

https://sourceware.org/bugzilla/show_bug.cgi?id=30111

            Bug ID: 30111
           Summary: lchmod test fails after 2038 on 32 bits systems
           Product: glibc
           Version: 2.35
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: time
          Assignee: unassigned at sourceware dot org
          Reporter: blemouzy at centralp dot fr
  Target Milestone: ---

Environment
===========

- i.MX6 32 bits CPU
- Yocto Kirkstone (kirkstone-4.0.6)
- Linux 5.10.109
- glibc 2.35 (8d125a1f9145ad90c94e438858d6b5b7578686f2)
- RFS built with "-D_TIME_BITS=64 -D_FILE_OFFSET_BITS=64" flags
- System date set after 011903142038 (2038 Jan 19 03:14:00)

Description
===========

tst-lchmod-time64 returns after 2038:

    error: support_descriptors.c:103: readdir: fstat64 (0) failed: Value too
large for defined data type
    error: 1 test failures

tst-lchmod-time64 returns before 2038:

    info: testing lchmod
    info: testing fchmodat with AT_FDCWD
    info: testing fchmodat with relative path
    info: re-running tests (after trying to empty /proc)
    info: testing lchmod
    info: testing fchmodat with AT_FDCWD
    info: testing fchmodat with relative path

Please find associated strace attached.

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[Bug time/30111] lchmod test fails after 2038 on 32 bits systems

[blemouzy at centralp dot fr]

https://sourceware.org/bugzilla/show_bug.cgi?id=30111

--- Comment #1 from LEMOUZY Benjamin <blemouzy at centralp dot fr> ---
Created attachment 14672
  --> https://sourceware.org/bugzilla/attachment.cgi?id=14672&action=edit
strace before 2038

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[Bug time/30111] lchmod test fails after 2038 on 32 bits systems

[blemouzy at centralp dot fr]

https://sourceware.org/bugzilla/show_bug.cgi?id=30111

--- Comment #2 from LEMOUZY Benjamin <blemouzy at centralp dot fr> ---
Created attachment 14673
  --> https://sourceware.org/bugzilla/attachment.cgi?id=14673&action=edit
strace after 2038

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[Bug time/30111] support_descriptors_list fails after 2038 on 32 bits systems

[schwab@linux-m68k.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=30111

Andreas Schwab <schwab@linux-m68k.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|lchmod test fails after     |support_descriptors_list
                   |2038 on 32 bits systems     |fails after 2038 on 32 bits
                   |                            |systems

--- Comment #3 from Andreas Schwab <schwab@linux-m68k.org> ---
The failure is unrelated to lchmod, it occurs in support_descriptors_list.

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[Bug time/30111] support_descriptors_list fails after 2038 on 32 bits systems

[schwab@linux-m68k.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=30111

Andreas Schwab <schwab@linux-m68k.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
   Target Milestone|---                         |2.38
         Resolution|---                         |FIXED

--- Comment #4 from Andreas Schwab <schwab@linux-m68k.org> ---
Fixed in 2.38.

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[Bug time/30111] support_descriptors_list fails after 2038 on 32 bits systems

[blemouzy at centralp dot fr]

https://sourceware.org/bugzilla/show_bug.cgi?id=30111

--- Comment #5 from LEMOUZY Benjamin <blemouzy at centralp dot fr> ---
Hello,

As
https://sourceware.org/git/?p=glibc.git;a=commit;h=3bfdc4e2bceb601b90c81a9baa73c1904db58b2f
has not been backported to release/2.35/master, I did it myself.

But I still have the issue:

  # date
  Tue Mar 12 06:53:05 UTC 2024
  # /usr/lib/glibc-tests/ptest/tests/glibc-ptest/tst-lchmod-time64
  info: testing lchmod
  info: testing fchmodat with AT_FDCWD
  info: testing fchmodat with relative path
  info: re-running tests (after trying to empty /proc)
  info: testing lchmod
  info: testing fchmodat with AT_FDCWD
  info: testing fchmodat with relative path


  # date
  Thu Jan 19 03:14:02 UTC 2040
  # /usr/lib/glibc-tests/ptest/tests/glibc-ptest/tst-lchmod-time64
  error: support_descriptors.c:103: readdir: fstat64 (0) failed: Value too
large for defined data type
  error: 1 test failures

Do I also need to backport another commits to fix it in 2.35?
(new strace outputs attached)

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[Bug time/30111] support_descriptors_list fails after 2038 on 32 bits systems

[blemouzy at centralp dot fr]

https://sourceware.org/bugzilla/show_bug.cgi?id=30111

--- Comment #6 from LEMOUZY Benjamin <blemouzy at centralp dot fr> ---
Created attachment 15396
  --> https://sourceware.org/bugzilla/attachment.cgi?id=15396&action=edit
Strace with backported changes in 2.35 before 2038

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[Bug time/30111] support_descriptors_list fails after 2038 on 32 bits systems

[blemouzy at centralp dot fr]

https://sourceware.org/bugzilla/show_bug.cgi?id=30111

--- Comment #7 from LEMOUZY Benjamin <blemouzy at centralp dot fr> ---
Created attachment 15397
  --> https://sourceware.org/bugzilla/attachment.cgi?id=15397&action=edit
Strace with backported changes in 2.35 after 2038

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[Bug time/30111] support_descriptors_list fails after 2038 on 32 bits systems

[adhemerval.zanella at linaro dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=30111

Adhemerval Zanella <adhemerval.zanella at linaro dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |adhemerval.zanella at linaro dot o
                   |                            |rg

--- Comment #8 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
It requires 3bfdc4e2bceb601b90c81a9baa73c1904db58b2f to fully use 64 bits on
libsupport. I have backported it on 2.35, 2.36, and 2.37.

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[Bug time/30111] support_descriptors_list fails after 2038 on 32 bits systems

[blemouzy at centralp dot fr]

https://sourceware.org/bugzilla/show_bug.cgi?id=30111

LEMOUZY Benjamin <blemouzy at centralp dot fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |UNCONFIRMED
         Resolution|FIXED                       |---

--- Comment #9 from LEMOUZY Benjamin <blemouzy at centralp dot fr> ---
(In reply to Adhemerval Zanella from comment #8)
> I have backported it on 2.35, 2.36, and 2.37.
I just tested a24adf3572ad23fc5098d4cc62ff821cff1ef3c5 on release/2.35/master
and the test successfully pass.
Thanks for that!

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