I believe it is Chromium that is causing this, locks the entire kde desktop. Not sure whats the best way to recover from this, I have been just starting a new session and doing a shutdown -r, but is there a better way ?
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[18225.797043] BUG: unable to handle kernel NULL pointer dereference at 000000000000000a
[18225.797056] IP: [<ffffffff810e114c>] pipe_write+0x277/0x49f
[18225.797070] PGD 0
[18225.797076] Oops: 0002 [#1] SMP
[18225.797082] CPU 0
[18225.797085] Modules linked in: ipv6 radeon vboxnetadp(O) vboxnetflt(O) vboxdrv(O) snd_usb_audio snd_usbmidi_lib snd_rawmidi snd_seq_device snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm kvm_amd uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core videodev media kvm sp5100_tco microcode i2c_piix4 snd_page_alloc snd_timer serio_raw snd ppdev pcspkr edac_core k10temp r8169 parport_pc firewire_ohci firewire_core floppy sha512_generic sha1_generic virtio_pci virtio_blk virtio_net virtio_console virtio_balloon virtio_ring virtio xts gf128mul cryptd aes_x86_64 sha256_generic iscsi_tcp tg3 e1000 fuse zfs(P) zcommon(P) znvpair(P) zavl(P) zunicode(P) spl xfs nfs lockd auth_rpcgss nfs_acl sunrpc jfs reiserfs ext4 jbd2 ext3 jbd ext2 mbcache scsi_wait_scan sl811_hcd hid_generic xhci_hcd ohci_hcd uhci_hcd ehci_hcd sx8 imm parport pata_pcmcia pcmcia
[18225.797190]
[18225.797196] Pid: 8030, comm: chrome Tainted: P O 3.5.0-sabayon #1 Gigabyte Technology Co., Ltd. GA-MA770T-UD3P/GA-MA770T-UD3P
[18225.797207] RIP: 0010:[<ffffffff810e114c>] [<ffffffff810e114c>] pipe_write+0x277/0x49f
[18225.797218] RSP: 0018:ffff8802c7dcdd58 EFLAGS: 00010296
[18225.797222] RAX: 000000000000000a RBX: 0000000000000000 RCX: 0000000000000010
[18225.797227] RDX: ffff8802fb502400 RSI: ffff8802c7dcdee8 RDI: ffff88030fd972f0
[18225.797231] RBP: ffff8802c7dcddf8 R08: 00007f6e9c207970 R09: ffff880217104000
[18225.797235] R10: ffff880217104000 R11: 0000000000000293 R12: ffff88023ac40960
[18225.797240] R13: ffff88030fd972f1 R14: ffffea0007e87fc0 R15: 0000000000000000
[18225.797245] FS: 00007f6e877f5900(0000) GS:ffff88032fc00000(0000) knlGS:00000000f749cb40
[18225.797250] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[18225.797254] CR2: 000000000000000a CR3: 00000002fef7b000 CR4: 00000000000007f0
[18225.797258] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[18225.797262] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[18225.797267] Process chrome (pid: 8030, threadinfo ffff8802c7dcc000, task ffff88027547bba0)
[18225.797269] Stack:
[18225.797272] ffff880200000000 0000000000000000 ffff88023ac409a0 ffff88027547bba0
[18225.797279] ffff8802c7dcdfd8 0000000000000000 ffff8802fb502400 000000100000000a
[18225.797286] ffff88030fd972f0 ffff88022d6d2600 ffff8802c7dcdee8 ffff8802c7dcdfd8
[18225.797292] Call Trace:
[18225.797304] [<ffffffff810d97b5>] do_sync_write+0xc8/0x108
[18225.797313] [<ffffffff812169bb>] ? security_file_permission+0x1e/0x84
[18225.797322] [<ffffffff810d9c6f>] ? rw_verify_area+0xac/0xc9
[18225.797329] [<ffffffff810d9efc>] vfs_write+0xad/0x13d
[18225.797336] [<ffffffff810da177>] sys_write+0x45/0x6c
[18225.797346] [<ffffffff8180dee6>] system_call_fastpath+0x1a/0x1f
[18225.797349] Code: 25 fe ff 48 85 c0 49 89 c6 75 16 41 89 df 48 8b 5d c8 48 c7 c0 f4 ff ff ff 48 85 db e9 76 01 00 00 49 89 44 24 38 49 81 fd ff 0f <00> 00 48 8b 7d b0 bb 00 10 00 00 49 0f 46 dd 48 89 de e8 a1 f7
[18225.797410] RIP [<ffffffff810e114c>] pipe_write+0x277/0x49f
[18225.797417] RSP <ffff8802c7dcdd58>
[18225.797420] CR2: 000000000000000a
[18225.831627] ---[ end trace 2b201d1d9d3fdc76 ]---
[18225.835521] BUG: unable to handle kernel NULL pointer dereference at 0000000000000009
[18225.835524] IP: [<ffffffff810e114c>] pipe_write+0x277/0x49f
[18225.835528] PGD 0
[18225.835530] Oops: 0002 [#2] SMP
thanks
nz
