15818 – objdump does not work with /proc/kcore

Bug 15818 - objdump does not work with /proc/kcore

Summary: objdump does not work with /proc/kcore

Status:	RESOLVED FIXED

Alias:	None

Product:	binutils
Classification:	Unclassified
Component:	binutils (show other bugs)
Version:	2.22

Importance:	P2 normal
Target Milestone:	---
Assignee:	Not yet assigned to anyone

URL:
Keywords:

Depends on:
Blocks:

Reported:	2013-08-06 09:52 UTC by phasetempsec
Modified:	2013-08-12 07:58 UTC (History)
CC List:	0 users

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Description phasetempsec 2013-08-06 09:52:38 UTC

Comment 1 phasetempsec 2013-08-06 10:00:38 UTC

$ sudo cat /proc/kallsyms | grep " snd_request_card"
ffffffffa03df520 T snd_request_card	[snd]
$ sudo objdump -d --start-address=0xffffffffa03df520 --stop-address=0xffffffffa03df620 /proc/kcore 

/proc/kcore:     file format elf64-x86-64


objdump: out of memory allocating 35184372088831 bytes after a total of 0 bytes

Comment 2 Sourceware Commits 2013-08-12 07:55:57 UTC

CVSROOT:	/cvs/src
Module name:	src
Changes by:	schwab@sourceware.org	2013-08-12 07:55:55

Modified files:
	binutils       : ChangeLog objdump.c 

Log message:
	PR binutils/15818
	* objdump.c (disassemble_section): Return early if nothing from
	this section needs to be disassembled.

Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/src/binutils/ChangeLog.diff?cvsroot=src&r1=1.2028&r2=1.2029
http://sourceware.org/cgi-bin/cvsweb.cgi/src/binutils/objdump.c.diff?cvsroot=src&r1=1.201&r2=1.202

Comment 3 Andreas Schwab 2013-08-12 07:58:28 UTC

Fixed for 2.24.