Hi, sorry if I already sent this, but I think I sent it before
confirming membership to the list so it didn't show up :s
*********/proc/mounts********
rootfs / rootfs rw 0 0
/dev/root /oldroot cramfs ro 0 0
/proc /oldroot/proc proc rw 0 0
tmpfs /oldroot/tmp tmpfs rw 0 0
/dev/hdc /oldroot/cdrom iso9660 ro 0 0
/dev/loop0 /oldroot/rootfs cramfs ro 0 0
tmpfs /oldroot/rwfs tmpfs rw 0 0
aufs / aufs
rw,xino=/oldroot/rwfs/.aufs.xino,br:/oldroot/rwfs=rw:/oldroot/rootfs=ro
0 0
proc /proc proc rw 0 0
sysfs /sys sysfs rw 0 0
dev /dev tmpfs rw 0 0
********uname -a********
Linux (none) 2.6.23.9 #5 SMP Sun Dec 2 00:39:45 GMT 2007 i686 unknown
********aufs version********
aufs 20071126
(latest from cvs)
********config********
make KDIR=/blah -f local.mk
********error********
------------[ cut here ]------------
kernel BUG at /home/ico2/src/aufs/fs/aufs/cpup.c:456!
invalid opcode: 0000 [#1]
SMP
Modules linked in: aufs
CPU: 0
EIP: 0060:[<c8b8a10c>] Not tainted VLI
EFLAGS: 00000246 (2.6.23.9 #5)
EIP is at au_cpup_single+0x71c/0xe10 [aufs]
eax: 00000000 ebx: c72d4280 ecx: 00000000 edx: c72d4280
esi: c73cff80 edi: 00000001 ebp: c73cff88 esp: c7171b60
ds: 007b es: 007b fs: 00d8 gs: 0033 ss: 0068
Process ennui (pid: 3209, ti=c7170000 task=c7180fc0 task.ti=c7170000)
Stack: c73cffdc 00000000 c72d4180 c72d4180 00000000 c72d4200 c72d4200 c0183c9c
c72d4200 c018f4da c02feb20 c017ba40 11441f7b 00000000 c73cffdc c72d4180
003cffdc 00000005 c72d4000 c72d4200 c73cfc80 c72d4180 c71c58f8 c137d490
Call Trace:
[<c0183c9c>] d_rehash+0x1c/0x30
[<c018f4da>] simple_lookup+0x2a/0x30
[<c017ba40>] lookup_one_len+0xe0/0x100
[<c8b96cb5>] set_h_dptr+0x65/0xa0 [aufs]
[<c0184b37>] dput+0x87/0x100
[<c8b95cc4>] au_lkup_neg+0x134/0x250 [aufs]
[<c8b8afdc>] au_cpup_simple+0x13c/0x1c0 [aufs]
[<c016b3c0>] shmem_file_read+0x0/0x260
[<c8b8b0f0>] au_sio_cpup_simple+0x90/0x1f0 [aufs]
[<c0183c9c>] d_rehash+0x1c/0x30
[<c01b8bed>] cramfs_lookup+0x16d/0x1b0
[<c8b83118>] sbend+0x18/0x30 [aufs]
[<c8b8b278>] au_cpup_dir+0x28/0x80 [aufs]
[<c8b97261>] di_read_lock+0x61/0x90 [aufs]
[<c02f1ee9>] mutex_lock+0x9/0x20
[<c8b88fdd>] au_cp_dirs+0x35d/0x440 [aufs]
[<c8b83118>] sbend+0x18/0x30 [aufs]
[<c8b83166>] stobr+0x36/0x50 [aufs]
[<c01d7f9d>] _atomic_dec_and_lock+0x3d/0x70
[<c0184b43>] dput+0x93/0x100
[<c8b890db>] au_cpup_dirs+0x1b/0x70 [aufs]
[<c8b8b250>] au_cpup_dir+0x0/0x80 [aufs]
[<c8b96aee>] dbstart+0x2e/0x40 [aufs]
[<c8b96b41>] au_h_dptr_i+0x41/0x80 [aufs]
[<c8b9fdc9>] au_wr_dir+0x529/0x5d0 [aufs]
[<c8b9f701>] h_permission+0x181/0x200 [aufs]
[<c8b9f701>] h_permission+0x181/0x200 [aufs]
[<c8ba0860>] aufs_permission+0x0/0x510 [aufs]
[<c8ba0fcc>] lock_hdir_lkup_wh+0x3c/0x190 [aufs]
[<c8ba0aee>] aufs_permission+0x28e/0x510 [aufs]
[<c8b97159>] di_read_unlock+0x39/0xe0 [aufs]
[<c8b83748>] aufs_read_unlock+0x18/0x70 [aufs]
[<c013c898>] down_write+0x8/0x20
[<c8ba1190>] add_simple+0x70/0x4a0 [aufs]
[<c0170fc2>] get_unused_fd_flags+0x52/0xd0
[<c8ba15dd>] aufs_create+0x1d/0x30 [aufs]
[<c017ad84>] vfs_create+0xd4/0x130
[<c017dfbe>] open_namei+0x5ae/0x610
[<c0171303>] do_filp_open+0x33/0x60
[<c0170fc2>] get_unused_fd_flags+0x52/0xd0
[<c0171380>] do_sys_open+0x50/0xf0
[<c0173911>] sys_write+0x41/0x70
[<c017145c>] sys_open+0x1c/0x20
[<c0104196>] sysenter_past_esp+0x5f/0x89
=======================
Code: cb a9 5f f7 8b 74 24 44 c1 ee 1f 8b 44 24 50 e8 bb a9 5f f7 85
f6 75 68 8b 44 24 44 81 c4 e0 00 00 00 5b 5e 5f 5d c3 0f 0b eb fe <0f>
0b eb fe 8b 7c 24 5c 64 a1 00 20 3f c0 8b 57 20 89 54 24 14
EIP: [<c8b8a10c>] au_cpup_single+0x71c/0xe10 [aufs] SS:ESP 0068:c7171b60
Segmentation fault
********Cause of error********
not really quite sure. the userspace program which triggered the error
was one I wrote. At the point where it dies it is supposed to be
extracting a file from an archive. the archive is on a cd drive, the
output file is in /tmp. both directories are within the aufs union.
strace tells me it was the attempt to open/create the output file that
caused it. open("/tmp/ennui/3203.tmp", O_WRONLY|O_CREAT|O_LARGEFILE,
0666
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