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mdb may dump a core due to stack overflow on a busy live system (Doc ID 3030360.1)

Last updated on JUNE 21, 2024

Applies to:

Solaris Operating System - Version 11.4 and later
Information in this document applies to any platform.

Symptoms

mdb -k may dump a core file when used against a running kernel on a busy system.

When it happens the stack trace will include repeated occurrence of zio_child_cb, walk_common, zio_print_cb.

    _ndoprnt_s
    _ndoprnt
    vsnprintf
    ctf_decl_sprintf
    ctf_type_lname
    ctf_type_name
    mdb_ctf_type_name
    getmember
    zio_child_cb
    walk_common
    zio_print_cb
    
    ... repeat ...
    
    zio_child_cb
    walk_common
    zio_print_cb
    zio_child_cb
    walk_common
    zio_print_cb
    zio_child_cb
    walk_common
    zio_print_cb

Example of an FMA report

 

Cause

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In this Document
Symptoms
Cause
Solution
References

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