kern/146726: Linux InstallJammer fails to execute on 8-STABLE

[Thomas Mueller]

>Number:         146726
>Category:       kern
>Synopsis:       Linux InstallJammer fails to execute on 8-STABLE
>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:   Wed May 19 11:00:15 UTC 2010
>Closed-Date:
>Last-Modified:
>Originator:     Thomas Mueller
>Release:        8-STABLE
>Organization:
>Environment:
FreeBSD tom.ulm.sysgo.com 8.1-PRERELEASE FreeBSD 8.1-PRERELEASE #9: Wed May 19 11:58:16 CEST 2010     toor at tom.ulm.sysgo.com:/usr/obj/usr/src/sys/TOM  amd64

>Description:
The Linux executable of the InstallJammer multiplatform GUI installer
program (http://www.installjammer.com/) fails to start on a recent
8-STABLE (amd64). A second system with an 8-STABLE kernel built with 
sources from January runs the program just fine.

$ file ./InstallJammer-1.2.14-Linux-x86-Install 
./InstallJammer-1.2.14-Linux-x86-Install: ELF 32-bit LSB executable, Intel 80386, version 1 (GNU/Linux), statically linked, stripped
$ sysctl compat.linux.osrelease
compat.linux.osrelease: 2.6.16
$ pkg_info -qo linux_base\*
emulators/linux_base-f10

$ ktrace ./InstallJammer-1.2.14-Linux-x86-Install 
PROT_EXEC|PROT_WRITE failed.

$ linux_kdump -f ktrace.out
 27433 ktrace   RET   linux_brk 0
 27433 ktrace   CALL  linux_olduname(0x7fffffffe8e7,0x7fffffffe630,0x7fffffffe640)
 27433 ktrace   NAMI  "./InstallJammer-1.2.14-Linux-x86-Install"
 27433 InstallJammer-1.2.1 RET   linux_olduname 0
 27433 InstallJammer-1.2.1 CALL  linux_mmap(0xffffd7ac)
 27433 InstallJammer-1.2.1 RET   linux_mmap -1 errno 22 Invalid argument
 27433 InstallJammer-1.2.1 CALL  write(0x2,0xc547d6,0x1d)
 27433 InstallJammer-1.2.1 GIO   fd 2 wrote 29 bytes
       "PROT_EXEC|PROT_WRITE failed.
       "
 27433 InstallJammer-1.2.1 RET   write 29/0x1d
 27433 InstallJammer-1.2.1 CALL  exit(0x7f)

Log messages of a debug-enabled linux.ko:
May 19 11:39:40 tom kernel: linux(24917): mmap(0x00c55000, 4096, 7, 0x00000032, -1, 12931072)
May 19 11:39:40 tom kernel: -> linux_mmap_common(0xc55000, 4096, 7, 0x00001012, -1, 0xc55000)
May 19 11:39:40 tom kernel: -> linux_mmap_common() return: 0x16 (0x00000000)

It appears that the program calls mmap() with MAP_ANON and an 
offset!=0. Reverting the changes in this MFC
   http://svn.freebsd.org/viewvc/base?view=revision&revision=206602
lets me run the program without problems.
>How-To-Repeat:

>Fix:


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