On Mon, 25 Aug 2008 13:09:18 +0800
Ian Kent <[EMAIL PROTECTED]> wrote:

> Stephen Hemminger wrote:
> > The following sequence of commands causes a kernel panic when
> > run on 2.6.26.3 + unionfs 2.4.  It also crashes on 2.6.25
> >   
> 
> Were you able to get a kernel trace from syslog?
> The unionfs guys would no doubt appreciate that.
> 
> > --------------
> >
> > rm -rf /tmp/active /tmp/changes /tmp/config
> > mkdir /tmp/active
> > mkdir /tmp/changes
> > mkdir /tmp/config
> >
> > mkdir -p /tmp/active/system/login/user/test1
> > mkdir -p /tmp/active/system/login/user/test2/password
> > echo bar >/tmp/active/system/login/user/test2/password/node.val
> >
> > mount -t unionfs -o dirs=/tmp/changes=rw:/tmp/active=ro unionfs /tmp/config
> >
> > rm -fr /tmp/config/system/login/user/test2
> > _______________________________________________
> > unionfs mailing list: http://unionfs.filesystems.org/
> > unionfs@mail.fsl.cs.sunysb.edu
> > http://www.fsl.cs.sunysb.edu/mailman/listinfo/unionfs
> >   


BUG: unable to handle kernel paging request at d6448d50
IP: [<d0a8f127>] :unionfs:__unionfs_file_revalidate+0xc7/0xd00
Oops: 0000 [#1] SMP 
Modules linked in: unionfs iptable_filter xt_NOTRACK iptable_raw ip_tables 
x_tables nf_nat_pptp nf_conntrack_pptp nf_conntrack_proto_gre nf_nat_h323 
nf_conntrack_h323 nf_nat_sip nf_conntrack_sip nf_nat_proto_gre nf_nat_tftp 
nf_nat_ftp nf_nat nf_conntrack_ipv4 nf_conntrack_tftp nf_conntrack_ftp 
nf_conntrack ipv6 parport_pc parport rtc_cmos rtc_core rtc_lib serio_raw pcspkr 
psmouse i2c_piix4 i2c_core container ac button shpchp pci_hotplug intel_agp 
agpgart evdev ext3 jbd mbcache sg sr_mod cdrom sd_mod pata_acpi floppy ehci_hcd 
pcnet32 mii mptspi mptscsih mptbase scsi_transport_spi uhci_hcd ata_piix 
ata_generic libata scsi_mod dock usbcore thermal processor fan

Pid: 4565, comm: rm Not tainted (2.6.26.3-unionfs #2)
EIP: 0060:[<d0a8f127>] EFLAGS: 00010256 CPU: 0
EIP is at __unionfs_file_revalidate+0xc7/0xd00 [unionfs]
EAX: d6448d50 EBX: ce927bc0 ECX: cf20ee00 EDX: 00000000
ESI: 00000001 EDI: cebfda00 EBP: 00000000 ESP: cea47e58
 DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
Process rm (pid: 4565, ti=cea46000 task=ce3256b0 task.ti=cea46000)
Stack: 00000000 00000000 00000000 00000000 00000000 00000000 cebfda00 cf7e621c 
       cf20ee00 00000000 00000000 00000000 00000000 00000000 00000000 00000001 
       cf7e621c 00000000 d0a8685f 00000000 ce927ba0 00000001 00000001 cf7e621c 
Call Trace:
 [<d0a8685f>] __unionfs_d_revalidate_one_locked+0x5f/0x140 [unionfs]
 [<d0a86bad>] __unionfs_d_revalidate_chain+0x26d/0x3a0 [unionfs]
 [<c017d719>] cp_new_stat64+0xf9/0x110
 [<d0a8fdbd>] unionfs_file_revalidate+0x5d/0x90 [unionfs]
 [<c0186aa0>] filldir64+0x0/0xe0
 [<d0a90ed3>] unionfs_readdir+0x53/0x2a0 [unionfs]
 [<c0186aa0>] filldir64+0x0/0xe0
 [<c017dc5e>] sys_fstat64+0x1e/0x30
 [<c0186aa0>] filldir64+0x0/0xe0
 [<c0186cf3>] vfs_readdir+0x93/0xb0
 [<c0186d7f>] sys_getdents64+0x6f/0xc0
 [<c0103e12>] syscall_call+0x7/0xb
 =======================
Code: 1c 8b 0b 8b 42 54 89 4c 24 7c 39 48 10 0f 84 6b 08 00 00 8b 73 10 89 b4 
24 80 00 00 00 8b 6c 24 7c 8b 43 14 8b 4c 24 20 c1 e5 02 <8b> 04 28 89 44 24 2c 
8b 41 0c 8b 40 50 89 44 24 30 8b 44 24 7c 
EIP: [<d0a8f127>] __unionfs_file_revalidate+0xc7/0xd00 [unionfs] SS:ESP 
0068:cea47e58
Kernel panic - not syncing: Fatal exception
Rebooting in 60 seconds..
_______________________________________________
unionfs mailing list: http://unionfs.filesystems.org/
unionfs@mail.fsl.cs.sunysb.edu
http://www.fsl.cs.sunysb.edu/mailman/listinfo/unionfs

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