[Unionfs] Kernel OOPS with 2.6.28.1

Wed Apr 1 04:09:23 EDT 2009

Hi,

I'm using unionfs 2.5.1 with kernel 2.6.28.1 and I'm getting regular OOPSs within about 10 minutes of my machine finishing booting.

I have 5 unionfs mounts enabled at /etc, /home, /root, /usr, and /var. My kernel config is attached, and a couple of the OOPSs are included inline at the end of this message.

Is this a known issue, or am I doing something daft?

(Sorry if this message arrives twice, I sent it yesterday but I don't think it got through).

Cheers, Rich.

OOPS 1:
Mar 31 08:58:13 softmsc kernel: BUG: unable to handle kernel paging request at 5f656c7a
Mar 31 08:58:13 softmsc kernel: IP: [<c01fa4b9>] __unionfs_file_revalidate+0x69/0x3b0
Mar 31 08:58:13 softmsc kernel: *pde = 00000000
Mar 31 08:58:13 softmsc kernel: Oops: 0000 [#1]
Mar 31 08:58:13 softmsc kernel: last sysfs file: /sys/class/vc/vcsa5/dev
Mar 31 08:58:13 softmsc kernel: Modules linked in: xt_state iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack nf_defrag
_ipv4 iptable_filter ipmi_devintf ipmi_msghandler ipv6 rtl8150 button battery ac ehci_hcd uhci_hcd i2c_viapro i2c_core
via_rhine [last unloaded: iptable_filter]
Mar 31 08:58:13 softmsc kernel:
Mar 31 08:58:13 softmsc kernel: Pid: 5247, comm: httpd Not tainted (2.6.28.1 #2) To Be Filled By O.E.M.
Mar 31 08:58:13 softmsc kernel: EIP: 0060:[<c01fa4b9>] EFLAGS: 00010282 CPU: 0
Mar 31 08:58:13 softmsc kernel: EIP is at __unionfs_file_revalidate+0x69/0x3b0
Mar 31 08:58:13 softmsc kernel: EAX: 5f656c62 EBX: 00000001 ECX: f6a26260 EDX: 00000001
Mar 31 08:58:13 softmsc kernel: ESI: f705f540 EDI: f6550c08 EBP: f73ed000 ESP: f7359eec
Mar 31 08:58:13 softmsc kernel:  DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068
Mar 31 08:58:13 softmsc kernel: Process httpd (pid: 5247, ti=f7358000 task=f6b0d7f0 task.ti=f7358000)
Mar 31 08:58:13 softmsc kernel: Stack:
Mar 31 08:58:13 softmsc kernel:  c01ef7d3 6fe93067 c0161b47 00000000 f6327380 ffff7000 00000000 f6327380
Mar 31 08:58:13 softmsc kernel:  00000001 01010000 f6550dac f6550c08 f6550dac ffffff8c f73ed000 c01fa892
Mar 31 08:58:13 softmsc kernel:  f73ed000 00000001 00000001 00000001 01162e9c f705f540 f6550c10 f6550dac
Mar 31 08:58:13 softmsc kernel: Call Trace:
Mar 31 08:58:13 softmsc kernel:  [<c01ef7d3>] __unionfs_d_revalidate+0x383/0x4e0
Mar 31 08:58:13 softmsc kernel:  [<c0161b47>] do_wp_page+0x227/0x4c0
Mar 31 08:58:13 softmsc kernel:  [<c01fa892>] unionfs_file_revalidate+0x92/0xc0
Mar 31 08:58:13 softmsc kernel:  [<c01f01c3>] unionfs_write+0x93/0x1a0
Mar 31 08:58:13 softmsc kernel:  [<c0178c03>] vfs_write+0x93/0x150
Mar 31 08:58:13 softmsc kernel:  [<c01661b1>] do_munmap+0x121/0x1d0
Mar 31 08:58:13 softmsc kernel:  [<c0178d71>] sys_write+0x41/0x70
Mar 31 08:58:13 softmsc kernel:  [<c0103ced>] sysenter_do_call+0x12/0x21
Mar 31 08:58:13 softmsc kernel: Code: 80 7c 24 27 00 0f 84 8e 00 00 00 f7 46 18 03 04 00 00 0f 84 81 00 00 00 85 f6 0f
84 22 03 00 00 8b 46 74 8b 10 8b 40 10 8b 04 90 <f7> 40 18 03 04 00 00 75 65 8b 47 60 8b 48 1c 85 c9 0f 88 08 03
Mar 31 08:58:13 softmsc kernel: EIP: [<c01fa4b9>] __unionfs_file_revalidate+0x69/0x3b0 SS:ESP 0068:f7359eec
Mar 31 08:58:13 softmsc kernel: ---[ end trace d114bc08f5c6dd40 ]---

OOPS 2:
Mar 31 09:11:20 softmsc kernel: unionfs: new lower inode mtime (bindex=0, name=namingSrvDB)
Mar 31 09:15:49 softmsc kernel: BUG: unable to handle kernel NULL pointer dereference at 00000019
Mar 31 09:15:49 softmsc kernel: IP: [<c01fa4b9>] __unionfs_file_revalidate+0x69/0x3b0
Mar 31 09:15:49 softmsc kernel: *pde = 00000000
Mar 31 09:15:49 softmsc kernel: Oops: 0000 [#1]
Mar 31 09:15:49 softmsc kernel: last sysfs file: /sys/class/vc/vcsa6/dev
Mar 31 09:15:49 softmsc kernel: Modules linked in: xt_state iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack nf_defrag
_ipv4 iptable_filter ipmi_devintf ipmi_msghandler ipv6 rtl8150 button battery ac ehci_hcd uhci_hcd i2c_viapro i2c_core
via_rhine [last unloaded: iptable_filter]
Mar 31 09:15:49 softmsc kernel:
Mar 31 09:15:49 softmsc kernel: Pid: 5242, comm: httpd Not tainted (2.6.28.1 #2) To Be Filled By O.E.M.
Mar 31 09:15:49 softmsc kernel: EIP: 0060:[<c01fa4b9>] EFLAGS: 00010282 CPU: 0
Mar 31 09:15:49 softmsc kernel: EIP is at __unionfs_file_revalidate+0x69/0x3b0
Mar 31 09:15:49 softmsc kernel: EAX: 00000001 EBX: 00000001 ECX: f6b5ba60 EDX: 00000001
Mar 31 09:15:49 softmsc kernel: ESI: f60dc140 EDI: f655994c EBP: f6ac1400 ESP: f6a85eec
Mar 31 09:15:49 softmsc kernel:  DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068
Mar 31 09:15:49 softmsc kernel: Process httpd (pid: 5242, ti=f6a84000 task=f703bb90 task.ti=f6a84000)
Mar 31 09:15:49 softmsc kernel: Stack:
Mar 31 09:15:49 softmsc kernel:  c01ef7d3 c021d017 f6a85f38 bf85a280 c0224583 bf85a280 00000000 00000000
Mar 31 09:15:49 softmsc kernel:  00000001 01010002 f6557118 f655994c f6557118 ffffff8c f6ac1400 c01fa892
Mar 31 09:15:49 softmsc kernel:  f6ac1400 00000001 00000001 00000001 0100001a f60dc140 f6559954 f6557118
Mar 31 09:15:49 softmsc kernel: Call Trace:
Mar 31 09:15:49 softmsc kernel:  [<c01ef7d3>] __unionfs_d_revalidate+0x383/0x4e0
Mar 31 09:15:49 softmsc kernel:  [<c021d017>] _atomic_dec_and_lock+0x37/0x50
Mar 31 09:15:49 softmsc kernel:  [<c0224583>] copy_from_user+0x43/0x70
Mar 31 09:15:49 softmsc kernel:  [<c01fa892>] unionfs_file_revalidate+0x92/0xc0
Mar 31 09:15:49 softmsc kernel:  [<c01f01c3>] unionfs_write+0x93/0x1a0
Mar 31 09:15:49 softmsc kernel:  [<c01876bf>] dput+0xbf/0xd0
Mar 31 09:15:49 softmsc kernel:  [<c0178c03>] vfs_write+0x93/0x150
Mar 31 09:15:49 softmsc kernel:  [<c0178d71>] sys_write+0x41/0x70
Mar 31 09:15:49 softmsc kernel:  [<c0103ced>] sysenter_do_call+0x12/0x21
Mar 31 09:15:49 softmsc kernel: Code: 80 7c 24 27 00 0f 84 8e 00 00 00 f7 46 18 03 04 00 00 0f 84 81 00 00 00 85 f6 0f
84 22 03 00 00 8b 46 74 8b 10 8b 40 10 8b 04 90 <f7> 40 18 03 04 00 00 75 65 8b 47 60 8b 48 1c 85 c9 0f 88 08 03
Mar 31 09:15:49 softmsc kernel: EIP: [<c01fa4b9>] __unionfs_file_revalidate+0x69/0x3b0 SS:ESP 0068:f6a85eec
Mar 31 09:15:49 softmsc kernel: ---[ end trace 671af1fac079ea31 ]---

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