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Bug #1548

closed

dis crashes disassembling anything kernel-ish

Added by Rich Lowe almost 11 years ago. Updated almost 11 years ago.

Status:
Resolved
Priority:
High
Assignee:
Jason King
Category:
cmd - userland programs
Start date:
2011-09-21
Due date:
% Done:

80%

Estimated time:
Difficulty:
Medium
Tags:
needs-triage
Gerrit CR:

Description

While disassembling practically anything kernel-like, I'm seeing dis crash.

core 'core.29245' of 29245:    dis /kernel/genunix
 0805288b construct_symtab (8066b20, 80524bc, 804794c, 80660d4) + 1f7
 08052be5 dis_tgt_create (8047b88, 100, 0, fefa0990) + 18d
 08054129 dis_file (8047b88, 8047aa4, 805532c, 805433c) + 11
 08054621 main     (2, 8047aa4, 8047ab0, 80523cf) + 2fd
 0805242d _start   (2, 8047b84, 8047b88, 0, 8047b98, 8047ba7) + 7d

I'm seeing the same with /platform/i86pc/kernel/unix, /kernel/drv/amd64/bge, and it appears pretty much any kernel objects.

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 #1

Updated by Jason King almost 11 years ago

This is triggered by symbols in special sections (such as COMMON or ABS). Since they are relocated at run-time by the linker, we can ignore these symbols (and in fact when disassembling the code on-disk, since they are relocations, there are no direct references to the symbol).

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 #2

Updated by Jason King almost 11 years ago

  • Category set to cmd - userland programs
  • Assignee set to Jason King
  • % Done changed from 0 to 80
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 #3

Updated by Gordon Ross almost 11 years ago

  • Status changed from New to Resolved
changeset:   13508:bf0e4028ac3a
tag:         tip
user:        Jason King <jason.brian.king@gmail.com>
date:        Fri Nov 04 09:47:33 2011 -0500
description:
    1548 dis crashes disassembling anything kernel-ish
    Reviewed by: Richard Lowe <richlowe@richlowe.net>
    Reviewed by: Eric Schrock <eric.schrock@delphix.com>
    Approved by: Gordon Ross <gwr@nexenta.com>
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