[rsbac] log file; Re: RSBAC vs. Btrfs (shutdown problem): log file

[Mohammad Mahmoudi]

Dear Martinez
Here is my logs when I shutdown my system
Unmounting file systems: ------------[ cut here ]------------
kernel BUG at fs/dcache.c:670!
invalid opcode: 0000 [#1] SMP 
last sysfs file: /sys/devices/pci0000:00/0000:00:03.0/uevent
Modules linked in: ipv6 dm_multipath virtio_balloon 8139too 8139cp mii
virtio_pci [last unloaded: scsi_wait_scan]
Pid: 1395, comm: umount Not tainted (2.6.32.21-Saman_R3.i686.PAE #1) 
EIP: 0060:[<c0531326>] EFLAGS: 00010246 CPU: 0
EIP is at shrink_dcache_for_umount_subtree+0x15b/0x1fd
EAX: 0000004c EBX: de3b0dd0 ECX: c0b59338 EDX: 00000000
ESI: 00000001 EDI: c097894c EBP: dd48be6c ESP: dd48be40
DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
Process umount (pid: 1395, ti=dd48a000 task=dc98b300 task.ti=dd48a000)
Stack:
c09722c2 de3b0dd0 00000002 de3b0e2c 00000001 c097894c ddd93364 de3b0e2c
<0> ddd93200 c0841ebc c0a5cf64 dd48be78 c05313fa ddd93200 dd48be88 c051f088
<0> de025600 00000003 dd48be98 c051f13c ddd93200 c055b69a dd48beac c051f469
Call Trace:
[<c05313fa>] ? shrink_dcache_for_umount+0x32/0x3c
[<c051f088>] ? generic_shutdown_super+0x1a/0xac
[<c051f13c>] ? kill_block_super+0x22/0x36
[<c055b69a>] ? vfs_quota_off+0x0/0x17
[<c051f469>] ? deactivate_super+0x53/0x66
[<c053678d>] ? mntput_no_expire+0x8e/0xba
[<c0536828>] ? release_mounts+0x6f/0x7a
[<c0536ddc>] ? do_umount+0x3f8/0x45a
[<c0529fe7>] ? putname+0x2a/0x33
[<c0529fe7>] ? putname+0x2a/0x33
[<c0529fe7>] ? putname+0x2a/0x33
[<c0617097>] ? security_capable+0x22/0x27
[<c0617097>] ? security_capable+0x22/0x27
[<c0617097>] ? security_capable+0x22/0x27
[<c0536eb9>] ? sys_umount+0x7b/0x9d
[<c040915c>] ? syscall_call+0x7/0xb
Code: 38 8b 43 28 89 45 f0 8b 4b 10 31 c0 85 c9 74 03 8b 41 20 81 c2 64 01
00 00 52 57 56 ff 75 f0 50 53 68 c2 22 97 c0 e8 ef 77 2f 00 <0f> 0b 83 c4
1c eb fe 8b 73 1c 39 f3 75 04 31 f6 eb 03 3e ff 0e 
EIP: [<c0531326>] shrink_dcache_for_umount_subtree+0x15b/0x1fd SS:ESP
0068:dd48be40
---[ end trace d1fe4c5183f49fe7 ]---
/etc/init.d/functions: line 520: 1395 Segmentation fault "$@"
[FAILED]
0000000208|do_umount() [sys_umount()]: umount failed -> calling rsbac_mount
for Device 00:18
umount2: Device or resource busy
umount: /proc/bus/usb: device is busy.
(In some cases useful info about processes that use
the device is found by lsof(8) or fuser(1))
0000000209|do_umount() [sys_umount()]: umount failed -> calling rsbac_mount
for Device 00:15
umount2: Device or resource busy
umount: /dev/shm: device is busy.
(In some cases useful info about processes that use
the device is found by lsof(8) or fuser(1))
0000000210|do_umount() [sys_umount()]: umount failed -> calling rsbac_mount
for Device 00:15
umount2: Device or resource busy
0000000211|do_umount() [sys_umount()]: umount failed -> calling rsbac_mount
for Device 00:11
umount2: Device or resource busy
umount: /dev/pts: device is busy.
(In some cases useful info about processes that use
the device is found by lsof(8) or fuser(1))
0000000212|do_umount() [sys_umount()]: umount failed -> calling rsbac_mount
for Device 00:11
umount2: Device or resource busy
mount: /boot not mounted already, or bad option
Please stand by while rebooting the system...
type=1128 audit(1301452824.770:15): user pid=1287 uid=0 auid=4294967295
ses=4294967295 msg='init: exe="/sbin/reboot" hostname=? addr=?
terminal=console res=success'
> Javier Juan Martinez Cabezón <tazok.id0 <at> gmail.com> writes:
> Check your logs and send us the last lines when you shutdown your system
> 2011/3/13 Mohammad Mahmoudi <m.mahmoudi at gawab.com>
> Thanks a lot for your reply.
> 
> In my rsbac config., secure delete disabled. CAP module not enabled.
> Only. AUTH,RC, and MAC modules have enabled. System boots in softmode,
> thus policy is not enforce.
> 
> Javier Juan Martínez Cabezón <tazok.id0 <at> gmail.com> writes:
> 
> > 
> > Please try to give some more information to permit us to help you
> properly.
> > 
> > I suppose that you can boot perfectly, but only you have troubles
> rebooting
> > and shutting down the system.
> > 
> > Some questions that could be of interest are: Is secure delete \
> > activated?
> Is
> > trying your init using it on this btrfs system?
> > 
> > Secure delete IS NOT supported in btrfs, so don't get it enabled.
> > 
> > Which modules did you enable?
> > 
> > Another question that you shall check with your logs, has Init enough
> > privileges to shutdown/rebooting the system
> > 
> > Is CAP_SYS_BOOT and CAP_SYS_ADMIN granted?
> > 
> > 2011/3/8 Mohammad Mahmoudi <m.mahmoudi <at> gawab.com>
> > 
> > > 
> > > I have installed RSBAC precompiled Linux kernel 2.6.32 on my system.
> Root
> > > file system is Btrfs. But, system can not reboot or shutdown. Why?


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