Apr 13 15:10:02 infinity kernel: BUG: unable to handle kernel NULL pointer dereference at (null) Apr 13 15:10:02 infinity kernel: IP: [] find_workspace+0x92/0x190 [btrfs] Apr 13 15:10:02 infinity kernel: PGD 7bfb2067 PUD d8978067 PMD 0 Apr 13 15:10:02 infinity kernel: Oops: 0000 [#1] SMP Apr 13 15:10:02 infinity kernel: CPU 1 Apr 13 15:10:02 infinity kernel: Modules linked in: cryptd aes_x86_64 aes_generic fuse fbcon bitblit fbcon_rotate fbcon_ccw fbcon_ud fbcon_cw softcursor font tileblit joydev arc4 dell_wmi sparse_keymap 8250_pnp dell_laptop dcdbas btusb bluetooth snd_hda_codec_idt crc16 microcode psmouse pcspkr iwl4965 iwlegacy snd_hda_intel mac80211 snd_hda_codec snd_hwdep tg3 snd_pcm cfg80211 snd_page_alloc snd_timer snd soundcore wmi 8250 serial_core evdev smsc47m192 hwmon_vid tpm_tis tpm tpm_bios rfkill loop nfs nfs_acl auth_rpcgss fscache lockd sunrpc phc_intel mperf coretemp hwmon autofs4 usb_storage usb_libusual uas btrfs zlib_deflate sd_mod pata_acpi ahci libahci ata_piix libata scsi_mod ehci_hcd uhci_hcd usbcore usb_common i915 video intel_agp intel_gtt cfbfillrect cfbimgblt cfbcopyarea i2c_algo_bit backlight drm_kms_helper drm agpgart Apr 13 15:10:02 infinity kernel: Apr 13 15:10:02 infinity kernel: Pid: 2591, comm: btrfs-endio-2 Not tainted 3.4.0-rc2-wl-00669-g502ad46 #110 Dell Inc. Latitude D830 /0HN341 Apr 13 15:10:02 infinity kernel: RIP: 0010:[] [] find_workspace+0x92/0x190 [btrfs] Apr 13 15:10:02 infinity kernel: RSP: 0018:ffff880078e7fcc0 EFLAGS: 00010207 Apr 13 15:10:02 infinity kernel: RAX: 0000000000000000 RBX: 0000000000000003 RCX: ffff88007bde9000 Apr 13 15:10:02 infinity kernel: RDX: ffffffffa029d500 RSI: dead000000200200 RDI: ffffffffa029d4f6 Apr 13 15:10:02 infinity kernel: RBP: ffff880078e7fd50 R08: 0000000000000008 R09: 0000000000004000 Apr 13 15:10:02 infinity kernel: R10: 0000000000000200 R11: 0000000000000200 R12: ffff880078e7fcf8 Apr 13 15:10:02 infinity kernel: R13: ffffffffa029d504 R14: ffffffffa029d4f6 R15: ffff880078e7fd10 Apr 13 15:10:02 infinity kernel: FS: 0000000000000000(0000) GS:ffff88011fd00000(0000) knlGS:0000000000000000 Apr 13 15:10:02 infinity kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b Apr 13 15:10:02 infinity kernel: CR2: 0000000000000000 CR3: 000000007bfe6000 CR4: 00000000000007e0 Apr 13 15:10:02 infinity kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Apr 13 15:10:02 infinity kernel: DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Apr 13 15:10:02 infinity kernel: Process btrfs-endio-2 (pid: 2591, threadinfo ffff880078e7e000, task ffff880119880000) Apr 13 15:10:02 infinity kernel: Stack: Apr 13 15:10:02 infinity kernel: ffff880078e7fcd0 ffffffff810bcacf ffff880119880000 ffffffffa029d500 Apr 13 15:10:02 infinity kernel: 0000000200000003 ffffffffa029d548 ffff880078e7fd00 ffffffff811a1060 Apr 13 15:10:02 infinity kernel: ffff880078e7fd20 ffffffff811764f9 0000000000000200 ffff880078e7fd40 Apr 13 15:10:02 infinity kernel: Call Trace: Apr 13 15:10:02 infinity kernel: [] ? mempool_free_slab+0x17/0x19 Apr 13 15:10:02 infinity kernel: [] ? __crc32c_le+0x10/0x12 Apr 13 15:10:02 infinity kernel: [] ? chksum_update+0x19/0x24 Apr 13 15:10:02 infinity kernel: [] btrfs_decompress_biovec+0x2b/0x7c [btrfs] Apr 13 15:10:02 infinity kernel: [] end_compressed_bio_read+0x10f/0x19d [btrfs] Apr 13 15:10:02 infinity kernel: [] bio_endio+0x2d/0x2f Apr 13 15:10:02 infinity kernel: [] end_workqueue_fn+0x38/0x3d [btrfs] Apr 13 15:10:02 infinity kernel: [] worker_loop+0x16e/0x4a2 [btrfs] Apr 13 15:10:02 infinity kernel: [] ? btrfs_queue_worker+0x281/0x281 [btrfs] Apr 13 15:10:02 infinity kernel: [] kthread+0x8b/0x93 Apr 13 15:10:02 infinity kernel: [] kernel_thread_helper+0x4/0x10 Apr 13 15:10:02 infinity kernel: [] ? kthread_freezable_should_stop+0x48/0x48 Apr 13 15:10:02 infinity kernel: [] ? gs_change+0xb/0xb Apr 13 15:10:02 infinity kernel: Code: 65 48 8b 04 25 80 b8 00 00 48 89 45 80 4c 89 f7 e8 be 20 0f e1 48 8b 55 88 48 8b 02 48 39 d0 74 3d 48 be 00 02 20 00 00 00 ad de <48> 8b 08 48 8b 50 08 48 89 51 08 48 89 0a 48 b9 00 01 10 00 00 Apr 13 15:10:02 infinity kernel: RIP [] find_workspace+0x92/0x190 [btrfs] Apr 13 15:10:02 infinity kernel: RSP Apr 13 15:10:02 infinity kernel: CR2: 0000000000000000 Apr 13 15:10:02 infinity kernel: ---[ end trace 2e6b178742035e68 ]--- Apr 13 15:10:07 infinity kernel: ICMPv6 RA: ndisc_router_discovery() failed to add default route. Apr 13 15:10:17 infinity NetworkManager[1019]: nm_ip6_config_add_nameserver: assertion `IN6_ARE_ADDR_EQUAL (nameserver, &nameservers[i]) == FALSE' failed Apr 13 15:10:22 infinity NetworkManager[1019]: nm_ip6_config_add_nameserver: assertion `IN6_ARE_ADDR_EQUAL (nameserver, &nameservers[i]) == FALSE' failed Apr 13 15:10:22 infinity NetworkManager[1019]: Clearing nscd hosts cache. Apr 13 15:10:22 infinity NetworkManager[1019]: Clearing nscd hosts cache. Apr 13 15:10:22 infinity NetworkManager[1019]: Policy set 'snewbury.org.uk' (wlan0) as default for IPv4 routing and DNS. Apr 13 15:10:22 infinity NetworkManager[1019]: Policy set 'snewbury.org.uk' (wlan0) as default for IPv6 routing and DNS. Apr 13 15:10:22 infinity NetworkManager[1019]: nm_ip6_config_add_nameserver: assertion `IN6_ARE_ADDR_EQUAL (nameserver, &nameservers[i]) == FALSE' failed Apr 13 15:10:41 infinity NetworkManager[1019]: nm_ip6_config_add_nameserver: assertion `IN6_ARE_ADDR_EQUAL (nameserver, &nameservers[i]) == FALSE' failed Apr 13 15:10:47 infinity NetworkManager[1019]: nm_ip6_config_add_nameserver: assertion `IN6_ARE_ADDR_EQUAL (nameserver, &nameservers[i]) == FALSE' failed Apr 13 15:11:03 infinity kernel: INFO: rcu_sched self-detected stall on CPU { 1} (t=60000 jiffies) Apr 13 15:11:03 infinity kernel: Pid: 819, comm: btrfs-endio-2 Tainted: G D 3.4.0-rc2-wl-00669-g502ad46 #110 Apr 13 15:11:03 infinity kernel: Call Trace: Apr 13 15:11:03 infinity kernel: [] __rcu_pending+0xc2/0x3c4 Apr 13 15:11:03 infinity kernel: [] rcu_pending+0x29/0x5a Apr 13 15:11:03 infinity kernel: [] rcu_check_callbacks+0x57/0x76 Apr 13 15:11:03 infinity kernel: [] update_process_times+0x3f/0x76 Apr 13 15:11:03 infinity kernel: [] tick_sched_timer+0x70/0x90 Apr 13 15:11:03 infinity kernel: [] __run_hrtimer+0xad/0x151 Apr 13 15:11:03 infinity kernel: [] ? tick_nohz_handler+0xce/0xce Apr 13 15:11:03 infinity kernel: [] hrtimer_interrupt+0xe0/0x19d Apr 13 15:11:03 infinity kernel: [] smp_apic_timer_interrupt+0x77/0x8a Apr 13 15:11:03 infinity kernel: [] apic_timer_interrupt+0x67/0x70 Apr 13 15:11:03 infinity kernel: [] ? do_raw_spin_lock+0x17/0x1d Apr 13 15:11:03 infinity kernel: [] _raw_spin_lock+0xe/0x10 Apr 13 15:11:03 infinity kernel: [] find_workspace+0x7c/0x190 [btrfs] Apr 13 15:11:03 infinity kernel: [] ? __crc32c_le+0x10/0x12 Apr 13 15:11:03 infinity kernel: [] ? chksum_update+0x19/0x24 Apr 13 15:11:03 infinity kernel: [] btrfs_decompress_biovec+0x2b/0x7c [btrfs] Apr 13 15:11:03 infinity kernel: [] end_compressed_bio_read+0x10f/0x19d [btrfs] Apr 13 15:11:03 infinity kernel: [] bio_endio+0x2d/0x2f Apr 13 15:11:03 infinity kernel: [] end_workqueue_fn+0x38/0x3d [btrfs] Apr 13 15:11:03 infinity kernel: [] worker_loop+0x16e/0x4a2 [btrfs] Apr 13 15:11:03 infinity kernel: [] ? btrfs_queue_worker+0x281/0x281 [btrfs] Apr 13 15:11:03 infinity kernel: [] kthread+0x8b/0x93 Apr 13 15:11:03 infinity kernel: [] kernel_thread_helper+0x4/0x10 Apr 13 15:11:03 infinity kernel: [] ? kthread_freezable_should_stop+0x48/0x48 Apr 13 15:11:03 infinity kernel: [] ? gs_change+0xb/0xb