Peter Radig wrote:
OpenSUSE 11.1 with kernel 2.6.27.23-0.1-default
dazukofs coming with antivir-server-prof-3.0.5-0 (i.e. 3.0.0-rc4)
The following kernel oops happened on my system:
kernel BUG at include/linux/dcache.h:329!
invalid opcode: 0000 [1] SMP
last sysfs file: /sys/devices/system/cpu/cpu7/cache/index2/shared_cpu_map
CPU 5
Modules linked in: dazukofs(N) nls_iso8859_1 nls_cp437 vfat fat
usb_storage nfsd lockd nfs_acl auth_rpcgss sunrpc exportfs bluetooth
af_packet ppdev vmnet(N) parport_pc parport vmci(N) vmmon(N)
iscsi_trgt(N) crc32c libcrc32c w83793(N) hwmon_vid capidrv isdn slhc
fcpci(PN) capi capifs kernelcapi microcode fuse loop dm_mod osst st
iTCO_wdt iTCO_vendor_support shpchp button sr_mod rtc_cmos i2c_i801
rtc_core rtc_lib i2c_core cdrom pci_hotplug pcspkr e1000e sg raid456
async_xor async_memcpy async_tx xor raid0 ehci_hcd uhci_hcd usbcore
sd_mod crc_t10dif pata_marvell edd raid1 ext3 mbcache jbd fan 3w_9xxx
ide_pci_generic piix ide_core ata_generic ata_piix ahci libata dock
aic79xx scsi_transport_spi scsi_mod thermal processor thermal_sys hwmon
Supported: No
Pid: 901, comm: smbd Tainted: P 2.6.27.23-0.1-default #1
RIP: 0010:[<ffffffff802b82c3>] [<ffffffff802b82c3>]
__follow_mount+0x54/0x7a
RSP: 0018:ffff8806bbcc9a88 EFLAGS: 00010246
RAX: ffff8807dd6ab3c0 RBX: ffff88081cf552c0 RCX: 0000000000000002
RDX: ffff8806bbcc9e98 RSI: 0000000000000001 RDI: ffff8807dd51dcb0
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: ffff8807fecd8a1c R11: ffffffff803319e8 R12: ffff8806bbcc9b18
R13: ffff8806bbcc9b18 R14: ffff8806bbcc9b08 R15: ffff880816948e80
FS: 00007fac916cc710(0000) GS:ffff88081ce34ec0(0000)
knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff99ce4e80 CR3: 00000006dc495000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process smbd (pid: 901, threadinfo ffff8806bbcc8000, task
ffff88064411c340)
Stack: ffff8807dd51dcb0 ffff8806bbcc9bc8 ffff8806bbcc9bc8
ffffffff802b85c4
ffffffff80a2e6a0 0000000000000000 ffff8806bbcc9bc8 ffff8807ea888d58
ffff8807bd8e1e40 ffff880816948e80 ffff8807fecd8a21 ffffffff802bab49
Call Trace:
[<ffffffff802b85c4>] do_lookup+0x4f/0xb6
[<ffffffff802bab49>] __link_path_walk+0x904/0xd68
[<ffffffff802bb178>] path_walk+0x5e/0xb9
[<ffffffff802bbe86>] vfs_path_lookup+0x51/0x90
[<ffffffffa04ba3be>] dazukofs_lookup+0xda/0x2ec [dazukofs]
[<ffffffff802b84e4>] real_lookup+0x7e/0x10f
[<ffffffff802b85d8>] do_lookup+0x63/0xb6
[<ffffffff802bab49>] __link_path_walk+0x904/0xd68
[<ffffffff802bb178>] path_walk+0x5e/0xb9
[<ffffffff802bb335>] do_path_lookup+0x162/0x1b9
[<ffffffff802bbccf>] user_path_at+0x48/0x79
[<ffffffff802b4722>] vfs_stat_fd+0x18/0x44
[<ffffffff802b47aa>] sys_newstat+0x19/0x31
[<ffffffff8020bfbb>] system_call_fastpath+0x16/0x1b
[<00007fac8dbcb145>] 0x7fac8dbcb145
Code: 18 49 8b 3c 24 48 85 ff 74 0f c7 87 cc 00 00 00 00 00 00 00 e8
48 f5 00 00 49 89 1c 24 48 8b 43 20 48 85 c0 74 0c 83 38 00 75 04 <0f>
0b eb fe f0 ff 00 49 89 44 24 08 bd 01 00 00 00 49 8b 74 24
RIP [<ffffffff802b82c3>] __follow_mount+0x54/0x7a
RSP <ffff8806bbcc9a88>
---[ end trace 763126df9862cc09 ]---
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Hi Peter,
thanks for reporting this bug.
This looks to me like a known bug that occurs if one dazukofs is mounted
over
more than one filesystems and you try to access a file for which
dazukofs has
to cross the boundary of both underlaying filesystems.
Could you please tell if it was a situation like this that triggered the
bug or
else, under which circumstances this bug occured
(i.e. where and how often has dazukofs been mounted, what action has
triggered
that bug)?
Thx,
Lino Sanfilippo
Geschäftsführender Gesellschafter: Tjark Auerbach
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