[Bug libc/26535] New: Execution of ldapadd command is getting hung

[Bug libc/26535] New: Execution of ldapadd command is getting hung

[krishchennu414 at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=26535

            Bug ID: 26535
           Summary: Execution of ldapadd command is getting hung
           Product: glibc
           Version: 2.27
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: libc
          Assignee: unassigned at sourceware dot org
          Reporter: krishchennu414 at gmail dot com
                CC: drepper.fsp at gmail dot com
  Target Milestone: ---

Hi,

Execution of ldap related commands are getting hung in x86_64 environment.
On checking the core and backtrace 
#0 0x00007f9ecef9ee44 in __openat64_2 (fd=2, file=0x7fff935f6270 " 0020: 20 66
73 69 70 48 6f 73 74 4e 61 6d 65 3d 43 4c fsipHostName=CL \n",
oflag=79) at openat64_2.c:26
#1 0x0000000000000000 in ?? ()
(gdb) p *file
$2 = 32 ' '
(gdb)


Command which is getting hung during the execution.
ldapadd -c -v $__LDAP_ARGS -f /tmp/${node}_routing.ldif > /dev/null


# uname -a
Linux CLA-0 4.4.227-pc64-distro.git-v2.104-4-mgw-rc #1 SMP Mon Aug 17 15:10:08
UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

Glibc version: 2.27

Brs,
KCH

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[Bug libc/26535] Execution of ldap related command is getting hung at openat64_2.c

[krishchennu414 at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=26535

KCH <krishchennu414 at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Execution of ldapadd        |Execution of ldap related
                   |command is getting hung     |command is getting hung  at
                   |                            |openat64_2.c
             Target|                            |x86_64
               Host|                            |x86_64

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[Bug libc/26535] Execution of ldap related command is getting hung at openat64_2.c

[fweimer at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=26535

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |fweimer at redhat dot com
   Last reconfirmed|                            |2020-08-25
             Status|UNCONFIRMED                 |WAITING
     Ever confirmed|0                           |1

--- Comment #1 from Florian Weimer <fweimer at redhat dot com> ---
This looks like significant memory corruption (the file name argument looks
like a hex dump). Are you sure this is a glibc problem? If yes, why? Thanks.

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[Bug libc/26535] Execution of ldap related command is getting hung at openat64_2.c

[krishchennu414 at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=26535

--- Comment #2 from KCH <krishchennu414 at gmail dot com> ---
It's only a suspection that the problem is related to the glibc. Also with
previous glibc version(2.11) the issue is not visible.

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[Bug libc/26535] Execution of ldap related command is getting hung at openat64_2.c

[krishchennu414 at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=26535

--- Comment #3 from KCH <krishchennu414 at gmail dot com> ---
Any inputs on how to proceed further with this issue?

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[Bug libc/26535] Execution of ldap related command is getting hung at openat64_2.c

[fweimer at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=26535

--- Comment #4 from Florian Weimer <fweimer at redhat dot com> ---
I would try to run your application under valgrind and see that reports any
errors. If that does not provide any clues, I would try rebuilding with Address
Sanitizer and see if that detects anything.

There is not enough data in this bug report to give additional advice, sorry.

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[Bug libc/26535] Execution of ldap related command is getting hung at openat64_2.c

[krishchennu414 at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=26535

--- Comment #5 from KCH <krishchennu414 at gmail dot com> ---
Thanks Florian Weimer for the suggestions.

Will try running the application with the valgrind. Will update it here once
the logs are collected.

Thanks.

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