Hi there, I'm currently getting a bug and segmentation fault while
doing an apt-get install on a development build of Finnix with kernel
2.6.21. I'm not sure what it's exactly segfaulting on since at that
point it's in the middle of installing uml-utilities, but I can
probably narrow it down to a the command with enough time. AUFS is
compiled with debugging. Please see dmesg details in the attached
file. This is reproducible, but only happen when I do things in a
certain order, and then only about 95% of the time. Please let me
know if you need anything else. Thanks.
Ryan
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kernel BUG at fs/aufs/iinfo.c:39!
invalid opcode: 0000 [#1]
SMP
Modules linked in: dm_mod ata_generic libata video thermal sbs processor i2c_ec
fan container button dock battery ac tsdev parport_pc parport rtc psmouse
serio_raw pcnet32 pcspkr mii shpchp i2c_piix4 pci_hotplug i2c_core intel_agp
agpgart evdev sd_mod sr_mod ide_disk ide_cd cdrom ide_generic mptspi mptscsih
mptbase scsi_transport_spi scsi_mod generic piix ide_core
CPU: 0
EIP: 0060:[<c01d865f>] Not tainted VLI
EFLAGS: 00010202 (2.6.21-1.999.1-x86-finnix #1)
EIP is at ibstart+0x2e/0x3f
eax: 00000001 ebx: c9a7a884 ecx: ffff0001 edx: 00000000
esi: 00000000 edi: c911d84c ebp: 00000000 esp: c94c1cf8
ds: 007b es: 007b fs: 00d8 gs: 0033 ss: 0068
Process uml-utilities (pid: 1658, ti=c94c0000 task=cfe82580 task.ti=c94c0000)
Stack: c9a7a884 c01d86f7 cf88c000 c01cb7f8 cfcf6040 0029ab98 00000001 cfa9f8d0
cfc09a99 c016d198 c94c1d84 c94c1d90 00000000 c94c1d90 c91e4780 c94c1f04
01000000 c01d44bf 00000001 cf881600 c9a7a884 c911d868 c0002d40 cf881600
Call Trace:
[<c01d86f7>] au_h_iptr+0x8/0x13
[<c01cb7f8>] aufs_d_revalidate+0x389/0x7dd
[<c016d198>] do_lookup+0x4f/0x140
[<c01d44bf>] aufs_permission+0x3f2/0x45f
[<c015831b>] __handle_mm_fault+0x771/0x7d4
[<c017576b>] __d_lookup+0x96/0xd9
[<c016d24a>] do_lookup+0x101/0x140
[<c016edad>] __link_path_walk+0x7d5/0xc2a
[<c016f246>] link_path_walk+0x44/0xb3
[<c015831b>] __handle_mm_fault+0x771/0x7d4
[<c01243b8>] do_wait+0x8ed/0x991
[<c016f53a>] do_path_lookup+0x16e/0x189
[<c016e44f>] getname+0x59/0x8f
[<c016fcf4>] __user_walk_fd+0x2f/0x45
[<c0169e63>] vfs_stat_fd+0x19/0x40
[<c015831b>] __handle_mm_fault+0x771/0x7d4
[<c01243b8>] do_wait+0x8ed/0x991
[<c0169f17>] sys_stat64+0xf/0x23
[<c011a0a9>] do_page_fault+0x28c/0x54f
[<c012ca60>] sys_rt_sigprocmask+0xb4/0xc7
[<c0103d90>] syscall_call+0x7/0xb
=======================
Code: 8b 80 9c 00 00 00 e8 45 4f fe ff e8 bb d3 f5 ff 85 c0 74 04 0f 0b eb fe
89 d8 e8 19 fc ff ff 83 c0 08 e8 a4 d3 f5 ff 85 c0 74 04 <0f> 0b eb fe 89 d8 e8
02 fc ff ff 5b 0f be 40 1c c3 56 53 89 c3
EIP: [<c01d865f>] ibstart+0x2e/0x3f SS:ESP 0068:c94c1cf8
rootfs / rootfs rw 0 0
none / tmpfs rw 0 0
/ramdisk/dev/hdc /cdrom iso9660 ro 0 0
/dev/loop0 /FINNIX squashfs ro 0 0
none /UNIONFS aufs
rw,xino=/tmp/UNIONFS/.aufs.xino,br:/tmp/UNIONFS=rw:/FINNIX=ro+wh 0 0
none /proc proc rw 0 0
none /sys sysfs rw 0 0
none /dev/.static/dev tmpfs rw 0 0
tmpfs /dev tmpfs rw 0 0
devpts /dev/pts devpts rw 0 0
devshm /dev/shm tmpfs rw 0 0
CONFIG_AUFS=y
CONFIG_AUFS_FAKE_DM=y
CONFIG_AUFS_BRANCH_MAX_127=y
# CONFIG_AUFS_BRANCH_MAX_511 is not set
# CONFIG_AUFS_BRANCH_MAX_1023 is not set
# CONFIG_AUFS_BRANCH_MAX_32767 is not set
CONFIG_AUFS_SYSAUFS=y
# CONFIG_AUFS_HINOTIFY is not set
# AUFS_EXPORT is disabled since EXPORTFS is a module but AUFS
# CONFIG_AUFS_ROBR is not set
# CONFIG_AUFS_LHASH_PATCH is not set
CONFIG_AUFS_DEBUG=y
# CONFIG_AUFS_COMPAT is not set
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