misc/119564: [ktrace] kdump segfault on linux binaries

[Jonathan Pascal]

>Number:         119564
>Category:       misc
>Synopsis:       [ktrace] kdump segfault on linux binaries
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri Jan 11 14:10:01 UTC 2008
>Closed-Date:
>Last-Modified:
>Originator:     Jonathan Pascal
>Release:        7.0-BETA3
>Organization:
>Environment:
FreeBSD foobar 7.0-BETA3 FreeBSD 7.0-BETA3 #8: Wed Jan  9 16:19:57 CET 2008     root at foobar:/usr/obj/usr/src/sys/GENERIC  i386
>Description:
Debugging Linux binaries is a pain. strace segfaults, kdump too. This bug report is about kdump: Using ktrace on a linux binary and viewing the result often leads to a segfault in kdump.
>How-To-Repeat:
Steps to reproduce:
- install acroread7 from the ports
$ ktrace -i acroread
$ kdump
-> segfault

The last line before the segfault is:
 22745 bash     CALL  freebsd6_mmap(0x3,0xbfbfdf20,<invalid>672202704,MAP_SHARED|MAP_PRIVATE|MAP_RENAME|MAP_NORESERVE|MAP_HASSEMAPHORE|MAP_STACK|MAP_NOSYNC,0x2e6f732e,0x68636163,0x646165,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 [and ca. 260000 "0," following]
>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: