BUG: unable to handle kernel paging request at ffffebe000000000 IP: [] kmem_cache_free+0x69/0x1e0 PGD 0 Oops: 0000 [#1] SMP Modules linked in: bnep bluetooth binfmt_misc nvidia(POE) snd_usb_audio wl(POE) snd_usbmidi_lib snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device snd_timer snd soundcore input_leds joydev kvm serio_raw drm k10temp cfg80211 edac_core i2c_piix4 edac_mce_amd asus_atk0110 shpchp wmi mac_hid parport_pc ppdev lp parport autofs4 hid_generic uas usb_storage pata_acpi hid_logitech_hidpp hid_logitech_dj usbhid hid psmouse pata_atiixp ahci libahci r8169 mii CPU: 0 PID: 1649 Comm: pulseaudio Tainted: P OE 4.2.0-15-generic #17-Ubuntu Hardware name: ASUSTeK Computer INC. CM1630/CM1630, BIOS 0304 05/20/2010 task: ffff8800c2e49900 ti: ffff8800c2d30000 task.ti: ffff8800c2d30000 RIP: 0010:[] [] kmem_cache_free+0x69/0x1e0 RSP: 0018:ffff8800c2d33dd8 EFLAGS: 00010286 RAX: 000001e000000000 RBX: 0000000000000000 RCX: 00007f0dffffd000 RDX: 000077ff80000000 RSI: 0000000000000000 RDI: ffff88012b089400 RBP: ffff8800c2d33df8 R08: 0000000000000000 R09: ffffffff81243e9c R10: ffffebe000000000 R11: 0000000000000220 R12: ffff88012b089400 R13: ffff8800c34eb5e8 R14: 0000000000000000 R15: ffff880129de86d8 FS: 00007f0e12cc27c0(0000) GS:ffff88012fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffebe000000000 CR3: 00000000c2cf8000 CR4: 00000000000006f0 Stack: 0000000000000000 0000000000000000 ffff8800c34eb5a8 ffff8800c34eb5e8 ffff8800c2d33e28 ffffffff81243e9c 0000000000000008 ffff8800c34eb5a8 0000000000000045 0000000000000000 ffff8800c2d33e58 ffffffff81243ee4 Call Trace: [] ep_unregister_pollwait.isra.7+0x6c/0x90 [] ep_remove+0x24/0xd0 [] eventpoll_release_file+0x5e/0xa0 [] __fput+0x1e6/0x220 [] ____fput+0xe/0x10 [] task_work_run+0x85/0xb0 [] do_notify_resume+0x69/0x70 [] int_signal+0x12/0x17 Code: ff 77 00 00 49 ba 00 00 00 00 00 ea ff ff 48 01 d8 48 0f 42 15 79 54 a3 00 4c 8b 4d 08 48 01 d0 48 c1 e8 0c 48 c1 e0 06 49 01 c2 <49> 8b 02 f6 c4 80 0f 85 5f 01 00 00 48 8b 37 65 48 8b 56 08 65 RIP [] kmem_cache_free+0x69/0x1e0 RSP CR2: ffffebe000000000 ---[ end trace 4ca65a91d7c5d2f6 ]---