#158 mount and umount /proc in a chroot - other node dies

open
nobody
3
2008-07-05
2008-05-19
John Hughes
No

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.

Related

Bugs: #1

Discussion

  • Roger Tsang

    Roger Tsang - 2008-05-23
    • milestone: 767946 -->
     
  • Roger Tsang

    Roger Tsang - 2008-05-23

    Logged In: YES
    user_id=1246761
    Originator: NO

    changed group to 'none' for 2.6.12-ssi

     
  • Roger Tsang

    Roger Tsang - 2008-07-05
    • priority: 5 --> 3
     

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