Aaron Straus <aaron <at> merfinllc.com> writes:
<-cut->
Just tried and:
[20555.327056] btrfs: use compression
[20592.252323] BUG: unable to handle kernel NULL pointer dereference at 00000073
[20592.252335] IP: [<f8d185c6>] :btrfs:btrfs_ioctl_snap_destroy+0xeb/0x24a
[20592.252385] *pde = 00000000
[20592.252393] Oops: 0000 [#1] SMP
[20592.252399] Modules linked in: btrfs nls_utf8 cifs nls_base vmnet vmci vmmon
nvidia(P) agpgart ppdev lp rfcomm l2cap bluetooth vboxnetflt vboxdrv video
output ac battery powernow_k8 cpufreq_userspace cpufreq_stats cpufreq_powersave
cpufreq_ondemand freq_table cpufreq_conservative kvm_amd kvm dm_snapshot
dm_mirror dm_log dm_mod ipv6 fuse zlib_inflate zlib_deflate libcrc32c
firewire_sbp2 loop rtc_cmos rtc_core rtc_lib snd_pcsp k8temp snd_hda_intel
snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd soundcore snd_page_alloc
parport_pc parport button i2c_nforce2 i2c_core evdev joydev ext3 jbd mbcache
raid1 md_mod sd_mod crc_t10dif ide_disk usb_storage usbhid sata_nv hid
ff_memless ata_generic libata scsi_mod dock floppy forcedeth firewire_ohci
firewire_core crc_itu_t ide_pci_generic amd74xx ide_core ehci_hcd ohci_hcd
usbcore thermal processor fan thermal_sys [last unloaded: btrfs]
[20592.252521]
[20592.252527] Pid: 6247, comm: btrfsctl Tainted: P (2.6.27-1-686 #1)
[20592.252534] EIP: 0060:[<f8d185c6>] EFLAGS: 00210202 CPU: 0
[20592.252573] EIP is at btrfs_ioctl_snap_destroy+0xeb/0x24a [btrfs]
[20592.252578] EAX: 00000000 EBX: bfc53cc8 ECX: 00000000 EDX: 00000000
[20592.252584] ESI: ffffffea EDI: f59bce7c EBP: f480ac00 ESP: f2e0dec4
[20592.252589] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
[20592.252595] Process btrfsctl (pid: 6247, ti=f2e0c000 task=dde44620
task.ti=f2e0c000)
[20592.252599] Stack: e9b91000 e9b91008 00000006 00000000 e685b744 f43a03c0
bfc53cc8 f480ac00
[20592.252613] 5000940f f8d187f4 00000000 c1000000 f4829668 f5666b40
f480ac00 f4928b7c
[20592.252626] 000000f6 00000000 00000000 003b9380 f4829680 00000000
b7eb5300 f4829668
[20592.252639] Call Trace:
[20592.252643] [<f8d187f4>] btrfs_ioctl+0xcf/0x897 [btrfs]
[20592.252683] [<c0168c12>] __vma_link+0x3f/0x4a
[20592.252693] [<c01693d4>] vma_link+0x4a/0xc5
[20592.252701] [<f8d18725>] btrfs_ioctl+0x0/0x897 [btrfs]
[20592.252738] [<c01825b0>] vfs_ioctl+0x1c/0x5d
[20592.252747] [<c0182830>] do_vfs_ioctl+0x23f/0x24d
[20592.252755] [<c018287f>] sys_ioctl+0x41/0x5a
[20592.252763] [<c01037f7>] sysenter_do_call+0x12/0x2f
[20592.252771] =======================
[20592.252774] Code: 47 0c 31 f6 83 c0 78 e8 1e a1 5a c7 e9 67 01 00 00 8b 54 24
10 8b 52 0c 89 54 24 0c 8b 47 0c 83 c0 78 e8 03 a1 5a c7 8b 44 24 0c <f6> 40 73
40 75 07 68 70 20 d2 f8 eb 12 8b 54 24 0c 81 7a 20 00
[20592.252839] EIP: [<f8d185c6>] btrfs_ioctl_snap_destroy+0xeb/0x24a [btrfs]
SS:ESP 0068:f2e0dec4
[20592.252881] ---[ end trace f1de5e7cc818c994 ]---
(END)
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