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Subjectassfail during unmount xfs 2.6.24.3 [from 2.6.24.y git]
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During the final unmount before reboot there was an assertion failure from XFS 
leading to the debug output below; I've included what was available on the
screendump, which I handwrote + transcribed. [I also have screenshots from a
2.1 MP camera -- they're slightly ugly but usable.] CONFIG_KEXEC was not
compiled in, so I was uanble to get a crashdump via SysRq. I'm sending this
along in case someone working on the XFS fs can find + fix a bug. I'm not
sending the kernel config in this first post just as not to spam everybody
with it if it's not needed -- if desired just ask and I'll send it.
Source used: 2.6.24.y from git -- 2.6.24.3.

This is on my Desktop box, x86 system -- single P4 CPU @ 2.6 GHz, IDE disk
attached to an onboard HighPoint HPT370 controller, and running Debian Sid.

When replying please CC me, as I am not currently subscribed to the list.

Cheers.
-- Chris

--

Chris Knadle
Chris.Knadle@coredump.us

-------------------

Cleaning up ifdown....
Deactivating swap...done.
Unmounting local filesystems...done.
Assertion failed: atomic_read(&mp->m_active_trans) == 0, file:
fs/xfs/xfs_vfsops.c, line: 708
------------[ cut here ]------------
kernel BUG at fs/xfs/support/debug.c:82!
infalid opcode: 0000 [#1]
Modules lined in: nvidia(P) xt_multiport iptable_filter ip_tables x_tables
ppdev lp ac battery ipv6 ext2 mbcache joydev sidewinder kqemu loop
snd_emu10k1_synth snd_emux_synth snd_seq_virmidi snd_seq_midi_emul
snd_emu10k1 firmware_class snd_ac97_codec ac97_bus snd_util_mem snd_hwdep
parport_pc parport snd_pcm_oss snd_pcm snd_page_alloc snd_mixer_oss psmouse
rtc snd_deq_dummy pcspkr serio_raw evdev snd_seq_oss snd_seq_midi snd_rawmidi
snd_seq_midi_event snd_seq snd_timer snd_seq_device emu10k1_gp gameport snd
soundcore button i2c_i801 i2c_core intel_agp iTCO_wdt agpart shpchp
pci_hotplug usbhid hid xfs ide_cd cdrom ata_piix ata_generic libata scsi_mod
ide_disk floppy uhci_hcd usbcore hpt366 e1000 piix generic ide_core thermal
processor fan

Pid: 25313, comm: mount Tainted: P (2.6.24.3-686-initrd-crk1 #1)
EIP: 0060:[>f8a67a3f>] EFLAGS: 00010292 CPU: 0
EIP is at assfail+0x1b/0x1f [xfs]
EAX: 00000061 EBX: f7faa400 ECX: ffffffff EDX: c034bda0
ESI: dfc97000 EDI: f7faa400 EBP: db175e14 ESP: db175dcc
DS: 007b ES: 007b FS: 0000 GS: 033 SS: 0068
Process mount (pid: 25313, ti=db174000 task=f7c32560 task.ti=db174000)
Stack: f8a6cc60 f8a6c6b0 f8a6a135 000002c4 f8a57e38 f7faa400 f8a57ee7 00000000
dfc97000 f7faa400 db175e14 f8a66ebc 00000001 f8a7fd20 f7fbd400 00000000
00000001 c0162bd2 00000001 f7fbd43c ffffffff f7fbd400 c0174c1b 00000000
Call Trace:
[<f8a57e38>] xfs_attr_quiesce+0x46/0x61 [xfs]
[<f8a57ee7>] xfs_mntupdate+0x84/0xbb [xfs]
[<f8a66ebc>] xfs_fs_remount+0x3d/0x57 [xfs]
[<c0162bd2>] do_remount_sb+0xb5/0x101 [xfs]
[<c0174c1b>] do_mount+0x5a9/0x65b
[<c0148ec9>] __alloc_pages+0x5f/0x360
[<c014430c>] find_lock_page+0x15/0x67
[<c0150dd8>] handle_mm_fault+0x25a/0x52d
[<c0148ec9>] __alloc_pages+0x5f/0x360
[<c0173707>] copy_mount_options+0x28/0x113
[<c0168b45>] getname+0x87/0xaf
[<c0174d3f>] sys_mount+0x72/0xa4
[<c0103cf2>] sysenter_past_esp+0x5f/0x85
=======================
Code: d7 6b c7 83 c3 08 81 fb c8 02 a8 f8 75 ee 5b c3 83 ec 10 89 4c 24 0c 89
54 24 08 89 44 24 04 c7 04 24 60 cc a6 f8 e8 0d ed 6a c7 <0f> 0b eb fe 56 53
83 ec 0c 89 c6 83 e6 07 9c 5b fa 89 0c 24 89
EIP: [<f8a67a3f>] assfail+0x1b/0x1f [xfs] SS:ESP 0068:db175dcc
---[ end trace 65bd78ca1bf60304 ]---
WARNING: at kernel/exit.c:917 do_exit()
Pid: 25313, comm: mount Tainted: P D 2.6.24.3-686-initrd-crk1 #1
[<c0118ceb>] do_exit+0x669/0x7a4
[<c0116767>] printk+0x1b/0x1f
[<c010477a>] do_trap+0x0/0xbd
[<c0104a56>] do_invalid_op+0x0/0x8a
[<f8a67a3f>] assfail+0x1b/0x1f [xfs]
[<f8a57e38>] xfs_attr_quiesce+0x46/0x61 [xfs]
[<f8a57ee7>] xfs_mntupdate+0x84/0xbb [xfs]
[<f8a66ebc>] xfs_fs_remount+0x3d/0x57 [xfs]
[<c0162bd2>] do_remount_sb+0xb5/0x101
[<c0174c1b>] do_mount+0x5a9/0x65b
[<c0148ec9>] __alloc_pages+0x5f/0x360
[<c014430c>] find_lock_page+0x15/0x67
[<c0150dd8>] handle_mm_fault+0x25a/0x52d
[<c0148ec9>] __alloc_pages+0x5f/0x360
[<c0173707>] copy_mount_options+0x28/0x113
[<c0168b45>] getname+0x87/0xaf
[<c0174d3f>] sys_mount+0x72/0xa4
[<c0103cf2>] sysenter_past_esp+0x5f/0x85
========================
/etc/rc6.d/S60umountroot: line17: 25313 Segmentation fault mount
$MOUNT_FORCE_OPT -n -o remount,ro -t dummytype dummydev / 2>/dev/null
[unhandled content-type:application/pgp-signature]
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