Hi all,

Just a heads up that recent Enlightenment (GIT) is causing problems
with ArchLinux vanilla kernel (3.15.8-1-ARCH), at least running inside
VirtualBox 4.3.14.

I'm trying to isolate the problem to report that to kernel guys since
a Kernel Oops is always a kernel bug, until then watch out if you want
to update and run similar setup.

The relevant dmesg part is:

[    7.142526] BUG: unable to handle kernel NULL pointer dereference at   (null)
[    7.142532] IP: [<  (null)>]   (null)
[    7.142534] *pde = 00000000
[    7.142536] Oops: 0000 [#1] PREEMPT SMP
[    7.142539] Modules linked in: ext4 crc16 mbcache jbd2 ppdev
snd_intel8x0 snd_ac97_codec intel_rapl microcode ac97_bus pcspkr
snd_pcm psmouse serio_raw snd_timer i2c_piix4 joydev mousedev snd
soundcore mac_hid e1000 parport_pc parport floppy(+) ac battery
intel_agp intel_gtt button evdev vboxvideo(O) drm agpgart i2c_core
vboxsf(O) vboxguest(O) hid_generic usbhid hid crc32c_generic btrfs xor
raid6_pq sd_mod crc_t10dif crct10dif_common atkbd libps2 ohci_pci
ohci_hcd ehci_pci ehci_hcd ahci libahci libata scsi_mod usbcore
usb_common i8042 serio
[    7.142562] CPU: 0 PID: 254 Comm: enlightenment Tainted: G
 O  3.15.8-1-ARCH #1
[    7.142564] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS
VirtualBox 12/01/2006
[    7.142566] task: f39fd2c0 ti: f3a58000 task.ti: f3a58000
[    7.142568] EIP: 0060:[<00000000>] EFLAGS: 00210046 CPU: 0
[    7.142570] EIP is at 0x0
[    7.142572] EAX: f5228400 EBX: f5228400 ECX: f8b7d140 EDX: 00000000
[    7.142573] ESI: f9fdb560 EDI: 00000000 EBP: f3a59de4 ESP: f3a59d90
[    7.142574]  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
[    7.142576] CR0: 80050033 CR2: 00000000 CR3: 33a5c000 CR4: 000006d0
[    7.142581] Stack:
[    7.142583]  f9fda8c2 f53a1d90 f5228400 f5228438 f5121cc0 00000000
f539f9c0 f3a59db4
[    7.142586]  f9fdd1e0 00200046 f52284e8 f52284ea 00200246 00000000
00000000 f5b75024
[    7.142589]  f539f9c0 c29a0d46 f5228400 f9fdb560 04000001 f3a59e44
f9fdb5d8 f57cf948
[    7.142592] Call Trace:
[    7.142601]  [<f9fda8c2>] ? drm_vblank_get+0xd2/0x240 [drm]
[    7.142607]  [<f9fdd1e0>] ? drm_minor_release+0x10/0x20 [drm]
[    7.142613]  [<f9fdb560>] ? drm_modeset_ctl+0x70/0x70 [drm]
[    7.142617]  [<f9fdb5d8>] drm_wait_vblank+0x78/0x5e0 [drm]
[    7.142622]  [<c12320e0>] ? lockref_put_or_lock+0x20/0x40
[    7.142625]  [<c11835f6>] ? mntput_no_expire+0x26/0x160
[    7.142629]  [<f9fdb560>] ? drm_modeset_ctl+0x70/0x70 [drm]
[    7.142633]  [<f9fd7585>] drm_ioctl+0x1f5/0x560 [drm]
[    7.142637]  [<f9fdb560>] ? drm_modeset_ctl+0x70/0x70 [drm]
[    7.142641]  [<c1175d2d>] ? do_filp_open+0x3d/0xa0
[    7.142645]  [<f9fd7390>] ? drm_copy_field+0x70/0x70 [drm]
[    7.142648]  [<c11782c2>] do_vfs_ioctl+0x302/0x4f0
[    7.142651]  [<c11713bd>] ? final_putname+0x1d/0x40
[    7.142653]  [<c11713bd>] ? final_putname+0x1d/0x40
[    7.142656]  [<c10ad8f0>] ? ktime_get_ts+0x40/0x140
[    7.142658]  [<c1181547>] ? __fget+0x57/0x90
[    7.142661]  [<c1178530>] SyS_ioctl+0x80/0x90
[    7.142665]  [<c14575e3>] sysenter_do_call+0x12/0x12
[    7.142666] Code:  Bad EIP value.
[    7.142669] EIP: [<00000000>] 0x0 SS:ESP 0068:f3a59d90
[    7.142672] CR2: 0000000000000000
[    7.142674] ---[ end trace 9c935fa0060b0fa8 ]---
[    7.142677] note: enlightenment[254] exited with preempt_count 2

If someone has the same problem running outside of VirtualBox let me
know, likely kernel guys will not look at it since it's "tainted",
however I don't think there is any relation to that.

-- 
Gustavo Sverzut Barbieri
--------------------------------------
Mobile: +55 (19) 99225-2202
Contact: http://www.gustavobarbieri.com.br/contact

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