Hi,
I have sometimes errors on del branch or umount operations.
The system used as file server with snapshots.
Used kernel: 2.6.27.10
aufs: 20081208 (from CVS, used local.mk )
/sys/fs/aufs/config
CONFIG_AUFS=m
CONFIG_AUFS_BRANCH_MAX_127=y
CONFIG_AUFS_RR_SQUASHFS=y
CONFIG_AUFS_DEBUG=y
Error messages:
Jan 11 00:02:01 filer kernel: BUG: unable to handle kernel NULL pointer
dereference at 00000000
Jan 11 00:02:01 filer kernel: IP: [<f8b0b599>] :aufs:cpup_entry+0x489/0x650
Jan 11 00:02:01 filer kernel: *pde = 00000000
Jan 11 00:02:01 filer kernel: Oops: 0000 [#1] SMP
Jan 11 00:02:01 filer kernel: Modules linked in: af_packet aufs binfmt_misc
dm_mod ehci_hcd uhci_hcd e1000e sg sr_mod cdrom evdev usbcore unix
Jan 11 00:02:01 filer kernel:
Jan 11 00:02:01 filer kernel: Pid: 4082, comm: chown Not tainted (2.6.27.10-1
#1)
Jan 11 00:02:01 filer kernel: EIP: 0060:[<f8b0b599>] EFLAGS: 00010282 CPU: 3
Jan 11 00:02:01 filer kernel: EIP is at cpup_entry+0x489/0x650 [aufs]
Jan 11 00:02:01 filer kernel: EAX: fffffffb EBX: 00000000 ECX: 00000003 EDX:
00000003
Jan 11 00:02:01 filer kernel: ESI: e8ed7e78 EDI: fffffffb EBP: f54c0a14 ESP:
e8ed7cc0
Jan 11 00:02:01 filer kernel: DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
Jan 11 00:02:01 filer kernel: Process chown (pid: 4082, ti=e8ed6000
task=f7376720 task.ti=e8ed6000)
Jan 11 00:02:01 filer kernel: Stack: ce328400 00000000 00000000 e8ed7e78
c018955a f438b414 64209ecb f8b2aa4e
Jan 11 00:02:01 filer kernel: e8ed7d24 f6bc7700 00000010 f54c0a70
f438b414 00000003 00000000 000081f4
Jan 11 00:02:01 filer kernel: c9cc3714 f54c0114 d7c65854 00000001
00000003 c3887b14 f438b414 00000000
Jan 11 00:02:01 filer kernel: Call Trace:
Jan 11 00:02:01 filer kernel: [<c018955a>] __d_lookup+0x8a/0x100
Jan 11 00:02:01 filer kernel: [<f8b2aa4e>] au_h_iptr+0xee/0x150 [aufs]
Jan 11 00:02:01 filer kernel: [<f8b0ba73>] au_cpup_single+0x313/0x670 [aufs]
Jan 11 00:02:01 filer kernel: [<f8b200b5>] au_new_inode+0x5a5/0xa60 [aufs]
Jan 11 00:02:01 filer kernel: [<f8b15c19>] au_set_h_dptr+0x69/0xa0 [aufs]
Jan 11 00:02:01 filer kernel: [<f8b14bc7>] au_lkup_neg+0x2f7/0x450 [aufs]
Jan 11 00:02:01 filer kernel: [<f8b0ca46>] au_cpup_simple+0x1b6/0x2c0 [aufs]
Jan 11 00:02:01 filer kernel: [<c0188c9c>] dput+0x1c/0x100
Jan 11 00:02:01 filer kernel: [<f8b1151d>] au_wbr_create_tdp+0x1cd/0x260
[aufs]
Jan 11 00:02:01 filer kernel: [<f8b15e44>] di_read_lock+0x44/0xf0 [aufs]
Jan 11 00:02:01 filer kernel: [<f8b0cc26>] au_sio_cpup_simple+0xd6/0x250
[aufs] n 11 00:02:01 filer kernel: BUG: unable to handle kernel NULL pointer
dereference at 00000000
Jan 11 00:02:01 filer kernel: IP: [<f8b0b599>] :aufs:cpup_entry+0x489/0x650
Jan 11 00:02:01 filer kernel: [<f8b21438>] au_wr_dir+0x238/0x660 [aufs]
Jan 11 00:02:01 filer kernel: [<c018eff1>] mnt_want_write+0x21/0x60
Jan 11 00:02:01 filer kernel: [<f8b20cf7>] au_do_pin+0x1f7/0x640 [aufs]
Jan 11 00:02:01 filer kernel: [<f8b22038>] aufs_setattr+0x558/0x9c0 [aufs]
Jan 11 00:02:01 filer kernel: [<c01817ac>] __link_path_walk+0xa1c/0xb80
Jan 11 00:02:01 filer kernel: [<c0174520>] cache_alloc_refill+0x70/0x4d0
Jan 11 00:02:01 filer kernel: [<c01800ff>] vfs_mkdir+0x1f/0xf0
Jan 11 00:02:01 filer kernel: [<c018c125>] notify_change+0xe5/0x2d0
Jan 11 00:02:01 filer kernel: [<c0176bf6>] chown_common+0x66/0x90
Jan 11 00:02:01 filer kernel: [<c0176d01>] sys_lchown+0x71/0x80
Jan 11 00:02:01 filer kernel: [<c0103049>] sysenter_do_call+0x12/0x21
Jan 11 00:02:01 filer kernel: [<c0370000>] ip_proc_exit_net+0x20/0x30
Jan 11 00:02:01 filer kernel: =======================
Jan 11 00:02:01 filer kernel: Code: 24 0f be 54 24 38 89 74 24 0c c7 44 24 08
00 00 00 00 89 5c 24 04 8b 4c 24 50 89 e8 e8 f1 f8ff ff 89 c7 85 c0 0f 84 6a ff
ff
ff <a1> 00 00 00 00 89 f1 8b 54 24 44 e8 97 d6 ff ff 85 c0 0f 85 47
Jan 11 00:02:01 filer kernel: EIP: [<f8b0b599>] cpup_entry+0x489/0x650 [aufs]
SS:ESP 0068:e8ed7cc0
Jan 11 00:02:01 filer kernel: ---[ end trace 84e5db27306d9f61 ]---
Jan 11 00:02:01 filer kernel: Kernel logging (proc) stopped.
kernel BUG at /usr/src/new_aufs/aufs/fs/aufs25/file.c:135!
invalid opcode: 0000 [#1] SMP
Modules linked in: af_packet aufs binfmt_misc dm_mod e1000e ehci_hcd sr_mod
uhci_hcd sg cdrom evdev usbcore unix
Pid: 20770, comm: mount Not tainted (2.6.27.10-1 #1)
EIP: 0060:[<f8b18f1d>] EFLAGS: 00010246 CPU: 3
EIP is at au_do_open+0x59d/0x5c0 [aufs]
EAX: 00000000 EBX: f6e7aa01 ECX: 00000000 EDX: f6c28ec0
ESI: 00000000 EDI: dfb9d614 EBP: f77d3264 ESP: f6b0fe54
DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
Process mount (pid: 20770, ti=f6b0e000 task=f7937bc0 task.ti=f6b0e000)
Stack: 00000000 f6cb7015 dfbaff14 f781dd28 f6b0ff10 c018dfd5 00000000 f6b0ff10
f8b1be70 f72b6d40 00000000 f6c51400 01020300 f6c51400 00000003 ffffff9c
f6cb7000 c0181a9a c0179421 f72b6d40 f77d3264 00000024 f8b1b4e0 c0176889
Call Trace:
[<c018dfd5>] mntput_no_expire+0x15/0xd0
[<f8b1be70>] do_open_dir+0x0/0x560 [aufs]
[<c0181a9a>] do_path_lookup+0x6a/0x160
[<c0179421>] get_empty_filp+0x51/0x120
[<f8b1b4e0>] aufs_open_dir+0x0/0x90 [aufs]
[<c0176889>] __dentry_open+0xb9/0x230
[<c0176a47>] nameidata_to_filp+0x47/0x60
[<c0182a09>] do_filp_open+0x189/0x710
[<c017667e>] do_sys_open+0x4e/0xe0
[<c012fe06>] sys_prctl+0x186/0x190
[<c017678c>] sys_open+0x2c/0x40
[<c0103049>] sysenter_do_call+0x12/0x21
[<c0370000>] ip_proc_exit_net+0x20/0x30
=======================
Code: 24 0c c7 44 24 08 b0 00 00 00 c7 44 24 04 73 e4 b2 f8 c7 04 24 34 f9 b2
f8 e8 00 a9 60 c7 e9 e2 fd ff ff 0f 0b eb fe 0f 0beb fe <0f> 0b eb fe 0f 0b eb
fe 0f 0b eb fe 0f 0b eb fe 0f 0b eb fe 0f
EIP: [<f8b18f1d>] au_do_open+0x59d/0x5c0 [aufs] SS:ESP 0068:f6b0fe54
---[ end trace 1ed1459045714ec0 ]---
kernel BUG at /usr/src/new_aufs/aufs/fs/aufs25/file.c:135!
invalid opcode: 0000 [#1] SMP
Modules linked in: af_packet aufs binfmt_misc dm_mod e1000e ehci_hcd uhci_hcd
sr_mod sg cdrom evdev usbcore unix
Pid: 7258, comm: mount Not tainted (2.6.27.10-1 #1)
EIP: 0060:[<f8b18f1d>] EFLAGS: 00010246 CPU: 1
EIP is at au_do_open+0x59d/0x5c0 [aufs]
EAX: 00000000 EBX: f6caa301 ECX: 00000000 EDX: f72b4940
ESI: 00000000 EDI: f76a6a14 EBP: f76a7e04 ESP: cedc3e54
DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
Process mount (pid: 7258, ti=cedc2000 task=f70cae80 task.ti=cedc2000)
Stack: 00000000 d9b0d015 f76a6b94 f72908a8 cedc3f10 c018dfd5 00000000 cedc3f10
f8b1be70 f73c4f40 00000000 f6d76800 01020300 f6d76800 00000003 ffffff9c
d9b0d000 c0181a9a c0179421 f73c4f40 f76a7e04 00000024 f8b1b4e0 c0176889
Call Trace:
[<c018dfd5>] mntput_no_expire+0x15/0xd0
[<f8b1be70>] do_open_dir+0x0/0x560 [aufs]
[<c0181a9a>] do_path_lookup+0x6a/0x160
[<c0179421>] get_empty_filp+0x51/0x120
[<f8b1b4e0>] aufs_open_dir+0x0/0x90 [aufs]
[<c0176889>] __dentry_open+0xb9/0x230
[<c0176a47>] nameidata_to_filp+0x47/0x60
[<c0182a09>] do_filp_open+0x189/0x710
[<c017667e>] do_sys_open+0x4e/0xe0
[<c012fe06>] sys_prctl+0x186/0x190
[<c017678c>] sys_open+0x2c/0x40
[<c0103049>] sysenter_do_call+0x12/0x21
[<c0370000>] ip_proc_exit_net+0x20/0x30
=======================
Code: 24 0c c7 44 24 08 b0 00 00 00 c7 44 24 04 73 e4 b2 f8 c7 04 24 34 f9 b2
f8 e8 00 a9 60 c7 e9 e2 fd ff ff 0f 0b eb fe 0f 0beb fe <0f> 0b eb fe 0f 0b eb
fe 0f 0b eb fe 0f 0b eb fe 0f 0b eb fe 0f
EIP: [<f8b18f1d>] au_do_open+0x59d/0x5c0 [aufs] SS:ESP 0068:cedc3e54
---[ end trace 3d73f0d685551006 ]---
aufs au_new_inode:362:smbd[7280]: Un-notified UDBA or repeatedly renamed dir,
b0, ext3, snapshots, hi226267252, i2.
Thank you.
Yuri Chislov.
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