[ 6653.419840] ------------[ cut here ]------------ [ 6653.420547] kernel BUG at drivers/net/xen-netback/netback.c:540! [ 6653.421246] invalid opcode: 0000 [#1] SMP [ 6653.421957] Modules linked in: md5 i915 cfbfillrect cfbimgblt i2c_algo_bit cfbcopyarea drm_kms_helper drm xhci_hcd 8139too mii i2c_i801 i2c_core [ 6653.423482] CPU: 0 PID: 4939 Comm: vif5.0 Not tainted 3.14.5-hardened-r2 #1 [ 6653.424257] Hardware name: iEi B199/B199, BIOS B199AR23 09/17/2013 [ 6653.425037] task: ffff880119486c80 ti: ffff880119487198 task.ti: ffff880119487198 [ 6653.425827] RIP: e030:[] [] xenvif_rx_action+0x811/0x820 [ 6653.426637] RSP: e02b:ffff8800d32cdd98 EFLAGS: 00010297 [ 6653.427445] RAX: 0000000000000001 RBX: ffff8800d3330740 RCX: 3fffffffffffff00 [ 6653.428278] RDX: 0000000000000013 RSI: ffff8800d5153388 RDI: 0000000000000000 [ 6653.429115] RBP: 0000000000000011 R08: ffff8800d32cddd4 R09: 0000000000000001 [ 6653.429957] R10: 0000160000000000 R11: ffff8800d3330740 R12: 0000000000000011 [ 6653.430796] R13: ffff8800d5153388 R14: ffff8800d32cddd4 R15: ffff8800d3330740 [ 6653.431649] FS: 00007fc94120d700(0000) GS:ffff88011ee00000(0000) knlGS:0000000000000000 [ 6653.432520] CS: e033 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 6653.433394] CR2: 00007f986cc730a0 CR3: 00000000d0aa5000 CR4: 0000000000042660 [ 6653.434295] Stack: [ 6653.435186] ffff8800d32cddd4 ffff88011ee0f180 ffff8800d32cdde8 000000121a2b15aa [ 6653.436113] 0002b7e200000011 ffff8800d3337258 0000000000000000 0000000081098185 [ 6653.437053] ffff8800d32cddd8 ffff8800d32cddd8 ffff8800d51538c8 ffff8800d51538c8 [ 6653.437997] Call Trace: [ 6653.438925] [] ? xenvif_kthread+0x4c/0x1c0 [ 6653.439868] [] ? __wake_up_sync+0x10/0x10 [ 6653.440817] [] ? xenvif_stop_queue+0x50/0x50 [ 6653.441772] [] ? kthread+0xbc/0xe0 [ 6653.442735] [] ? sched_clock+0x5/0x10 [ 6653.443694] [] ? kthread_should_park+0x10/0x20 [ 6653.444656] [] ? kthread_freezable_should_stop+0x60/0x60 [ 6653.445637] [] ? ret_from_fork+0x74/0xa0 [ 6653.446627] [] ? kthread_freezable_should_stop+0x60/0x60 [ 6653.447627] Code: 00 c7 42 0c 00 00 00 00 e9 7c fe ff ff c6 44 24 20 00 e9 a3 f9 ff ff 83 c8 03 e9 1c fb ff ff 31 ed b8 04 00 00 00 e9 f5 fa ff ff <0f> 0b 0f 0b 0f 0b 66 0f 1f 84 00 00 00 00 00 44 8b 87 98 00 00 [ 6653.449830] RIP [] xenvif_rx_action+0x811/0x820 [ 6653.450913] RSP [ 6653.624856] ---[ end trace 5d9a58b0d1c65342 ]--- [ 7006.778776] BUG: unable to handle kernel NULL pointer dereference at (nil) [ 7006.779951] IP: [] exit_creds+0x12/0x60 [ 7006.781106] PGD 0 [ 7006.782239] Oops: 0000 [#2] SMP [ 7006.783381] Modules linked in: md5 i915 cfbfillrect cfbimgblt i2c_algo_bit cfbcopyarea drm_kms_helper drm xhci_hcd 8139too mii i2c_i801 i2c_core [ 7006.785786] CPU: 7 PID: 56 Comm: xenwatch Tainted: G D 3.14.5-hardened-r2 #1 [ 7006.787009] Hardware name: iEi B199/B199, BIOS B199AR23 09/17/2013 [ 7006.788252] task: ffff88011a3e0f80 ti: ffff88011a3e1498 task.ti: ffff88011a3e1498 [ 7006.789507] RIP: e030:[] [] exit_creds+0x12/0x60 [ 7006.790783] RSP: e02b:ffff880119c63d68 EFLAGS: 00010287 [ 7006.792049] RAX: 0000000000000000 RBX: ffff880119486c80 RCX: 0000000000000020 [ 7006.793328] RDX: 0000000000000001 RSI: 0000000080000200 RDI: 0000000000000000 [ 7006.794609] RBP: 0000000000000000 R08: 0000000080000200 R09: ffff88011a578000 [ 7006.795898] R10: 000000000000000e R11: 0000000000000000 R12: ffffffff813c0d70 [ 7006.797179] R13: 0000000000000020 R14: ffff8800d4226880 R15: 0000000000000000 [ 7006.798455] FS: 00007f0ce67f2700(0000) GS:ffff88011efc0000(0000) knlGS:0000000000000000 [ 7006.799733] CS: e033 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 7006.801013] CR2: 0000000000000000 CR3: 00000000d47ea000 CR4: 0000000000042660 [ 7006.802294] Stack: [ 7006.803550] ffff880119486c80 ffffffff8106b3bc ffff880119c63d78 ffff880119486c80 [ 7006.804816] 0000000000000000 ffffffff8108fddc 0000000000000020 ffffffff00000000 [ 7006.806077] 0000000000000020 ffff8800d3330740 0000000000000020 ffffffff814845b4 [ 7006.807329] Call Trace: [ 7006.808565] [] ? __put_task_struct+0x3c/0x110 [ 7006.809802] [] ? kthread_stop+0x5c/0x70 [ 7006.811025] [] ? xenvif_disconnect+0x24/0x70 [ 7006.812240] [] ? set_backend_state+0x103/0x920 [ 7006.813453] [] ? xenbus_read_driver_state+0x26/0x40 [ 7006.814683] [] ? xs_watch+0x60/0x60 [ 7006.815905] [] ? xenwatch_thread+0x82/0x140 [ 7006.817130] [] ? __wake_up_sync+0x10/0x10 [ 7006.818333] [] ? kthread+0xbc/0xe0 [ 7006.819529] [] ? sched_clock+0x5/0x10 [ 7006.820714] [] ? kthread_should_park+0x10/0x20 [ 7006.821887] [] ? kthread_freezable_should_stop+0x60/0x60 [ 7006.823054] [] ? ret_from_fork+0x74/0xa0 [ 7006.824216] [] ? kthread_freezable_should_stop+0x60/0x60 [ 7006.825377] Code: 0f 85 72 fe ff ff 85 c0 0f 84 8e fe ff ff e9 65 fe ff ff 0f 0b 0f 0b 66 90 53 48 89 fb 48 8b 87 e8 06 00 00 48 8b bf 50 06 00 00 <8b> 00 48 c7 83 50 06 00 00 00 00 00 00 f0 ff 0f 74 1c 48 8b bb [ 7006.827940] RIP [] exit_creds+0x12/0x60 [ 7006.829167] RSP [ 7006.830389] CR2: 0000000000000000 [ 7006.831605] ---[ end trace 5d9a58b0d1c65343 ]--- [ 7006.832975] xenbr0: port 6(vif5.0) entered disabled state