[ ssic-linux-Bugs-1967168 ] mount and umount /proc in a chroot - other node dies

Bugs item #1967168, was opened at 2008-05-19 11:38
Message generated for change (Settings changed) made by rogertsang
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Category: Process Management
Group: None
Status: Open
Resolution: None
>Priority: 3
Private: No
Submitted By: John Hughes (hughesj)
Assigned to: Nobody/Anonymous (nobody)
Summary: mount and umount /proc in a chroot - other node dies

Initial Comment:
On node 1:

# chroot /some-chroot /bin/sh
# mount -t proc proc /proc
# umount /proc

on node 2:

rprocfs_prep_umount; Can't find vfsmount
------------[ cut here ]------------
kernel BUG at cluster/ssi/vproc/procfs_mount.c:305!
invalid operand: 0000 [#1]
SMP
Modules linked in: ext3 jbd button ac battery parport_pc joydev i2c_piix4 parport i2c_core floppy ne2k_pci 8390
CPU:    0
EIP:    0060:[<c0250720>]    Not tainted VLI
EFLAGS: 00000286   (2.6.12-ssi-686-smp)
EIP is at rprocfs_prep_umount+0x70/0x80
eax: 0000002c   ebx: 00000000   ecx: c04f4a0c   edx: 00000200
esi: 00000000   edi: c070e160   ebp: cea81f2c   esp: cea81f20
ds: 007b   es: 007b   ss: 0068
Process icssvr_daemon (pid: 131501, threadinfo=cea80000 task=cea7f7b0)
Stack: c04ae88c cea81f48 cf496c00 cea81f5c c02269a3 00000002 cea81f48 00000032
       00000000 00000000 00000000 00000000 00000032 00000000 00000000 cea81fe4
       c020e609 cf496c00 00000000 00000000 00000000 cf53fdf0 cea80000 cf53fdf0
Call Trace:
 [<c01079ff>] show_stack+0x7f/0xa0
 [<c0107ba4>] show_registers+0x164/0x230
 [<c0107f54>] die+0xf4/0x1a0
 [<c0108086>] do_trap+0x86/0xd0
 [<c0108378>] do_invalid_op+0xb8/0xd0
 [<c010761b>] error_code+0x4f/0x54
 [<c02269a3>] svr_rprocfs_prep_umount+0x73/0xd0
 [<c020e609>] icssvr_daemon+0x319/0xb40
 [<c01034a5>] kernel_thread_helper+0x5/0x10
Code: 89 30 31 c0 5a 5b 5e 5d c3 89 f6 89 1c 24 e8 68 1f f4 ff 8b 45 0c 89 30 31 c0 5a 5b 5e 5d c3 c7 04 24 8c e8 4a c0 e8 b0 97 ed ff <0f> 0b 31 01 68 e8 4a c0 eb a5 8d b6 00 00 00 00 55 89 e5 56 53

Entering kdb (current=0xcea7f7b0, pid 131501) on processor 0 Oops: invalid operand
due to oops @ 0xc0250720
eax = 0x0000002c ebx = 0x00000000 ecx = 0xc04f4a0c edx = 0x00000200
esi = 0x00000000 edi = 0xc070e160 esp = 0xcea81f20 eip = 0xc0250720
ebp = 0xcea81f2c xss = 0x00000068 xcs = 0x00000060 eflags = 0x00000286
xds = 0x0000007b xes = 0x0000007b origeax = 0xffffffff &regs = 0xcea81eec
[0]kdb>

Discovered while trying to build packages in an etch chroot.


----------------------------------------------------------------------

Comment By: Roger Tsang (rogertsang)
Date: 2008-05-23 19:54

Message:
Logged In: YES 
user_id=1246761
Originator: NO

changed group to 'none' for 2.6.12-ssi

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=405834&aid=1967168&group_id=32541

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