Happened to me on a 2012 Mac Mini. Have been running 14.04 for the past few years with very few issues and going back to 4.4.0-112-generic #135~14.04.1 fixes the issues I had.
------------------------------------------------------- Feb 9 10:57:56 mini1 udisksd[2155]: Acquired the name org.freedesktop.UDisks2 on the system message bus Feb 9 10:58:08 mini1 kernel: [ 43.098930] BUG: unable to handle kernel NULL pointer dereference at 0000000000000020 Feb 9 10:58:08 mini1 kernel: [ 43.098970] IP: [<ffffffff813f6d54>] csum_and_copy_from_iter+0x14/0x4a0 Feb 9 10:58:08 mini1 kernel: [ 43.099000] PGD 800000004e95b067 PUD 4e9a9067 PMD 0 Feb 9 10:58:08 mini1 kernel: [ 43.099023] Oops: 0000 [#1] SMP Feb 9 10:58:08 mini1 kernel: [ 43.099040] Modules linked in: autofs4 nfsd auth_rpcgss nfs_acl nfs rfcomm bnep lockd grace sunrpc fscache b43 mac80211 cfg80211 ssb ir_sharp_decoder ir_lirc_codec ir_sanyo_decoder ir_jvc_decoder ir_rc5_decoder lirc_dev ir_rc6_decoder ir_mce_kbd_decoder ir_nec_decoder ir_sony_decoder ir_xmp_decoder rc_rc6_mce btusb applesmc btrtl mceusb btbcm btintel input_polldev rc_core intel_rapl bluetooth snd_hda_codec_hdmi x86_pkg_temp_thermal intel_powerclamp hid_appleir coretemp input_leds joydev snd_hda_codec_cirrus snd_hda_codec_generic kvm_intel snd_hda_intel kvm snd_hda_codec snd_hda_core snd_hwdep irqbypass i915 snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq crct10dif_pclmul snd_seq_device drm_kms_helper drm i2c_algo_bit crc32_pclmul snd_timer ghash_clmulni_intel fb_sys_fops syscopyarea sysfillrect snd sysimgblt soundcore apple_gmux bcma parport_pc cryptd ppdev mei_me apple_bl lp video mei shpchp mac_hid lpc_ich parport hid_generic usbhid hid firewire_ohci tg3 ahci firewire_core sdhci_pci libahci ptp sdhci crc_itu_t pps_core fjes Feb 9 10:58:08 mini1 kernel: [ 43.099613] CPU: 3 PID: 2277 Comm: ping Not tainted 4.4.0-113-generic #136~14.04.1-Ubuntu Feb 9 10:58:08 mini1 kernel: [ 43.099654] Hardware name: Apple Inc. Macmini5,1/Mac-8ED6AF5B48C039E1, BIOS MM51.88Z.0075.B00.1106271442 06/27/2011 Feb 9 10:58:08 mini1 kernel: [ 43.099714] task: ffff880058a48000 ti: ffff88004ea5c000 task.ti: ffff88004ea5c000 Feb 9 10:58:08 mini1 kernel: [ 43.099757] RIP: 0010:[<ffffffff813f6d54>] [<ffffffff813f6d54>] csum_and_copy_from_iter+0x14/0x4a0 Feb 9 10:58:08 mini1 kernel: [ 43.099816] RSP: 0018:ffff88004ea5f980 EFLAGS: 00010282 Feb 9 10:58:08 mini1 kernel: [ 43.099847] RAX: 0000000000000000 RBX: 0000000000000010 RCX: 0000000000000010 Feb 9 10:58:08 mini1 kernel: [ 43.099890] RDX: ffff88004ea5f9f4 RSI: 0000000000000040 RDI: ffff88005dbfc024 Feb 9 10:58:08 mini1 kernel: [ 43.099931] RBP: ffff88004ea5f9e0 R08: 0000000000000000 R09: ffff88004e96cc00 Feb 9 10:58:08 mini1 kernel: [ 43.099974] R10: ffff88005dbfc024 R11: 0000000000000040 R12: 0000000000000040 Feb 9 10:58:08 mini1 kernel: [ 43.100015] R13: 0000000000000000 R14: ffff880058a48920 R15: ffff88005dbfc024 Feb 9 10:58:08 mini1 kernel: [ 43.100059] FS: 00007f4c9232b740(0000) GS:ffff8801002c0000(0000) knlGS:0000000000000000 Feb 9 10:58:08 mini1 kernel: [ 43.100106] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Feb 9 10:58:08 mini1 kernel: [ 43.100141] CR2: 0000000000000020 CR3: 000000004e96e000 CR4: 0000000000060670 Feb 9 10:58:08 mini1 kernel: [ 43.100182] Stack: Feb 9 10:58:08 mini1 kernel: [ 43.100197] ffffffff816ff48e ffff88004e96cc00 ffff88004ea5fa0f 00000000024000c0 Feb 9 10:58:08 mini1 kernel: [ 43.100249] 00000000000001c0 00000000ffffffff ffff88004ea5f9f0 ffff88004e96cc00 Feb 9 10:58:08 mini1 kernel: [ 43.100300] 0000000000000040 0000000000000000 ffff880058a48920 ffff88005dbfc024 Feb 9 10:58:08 mini1 kernel: [ 43.100350] Call Trace: Feb 9 10:58:08 mini1 kernel: [ 43.100371] [<ffffffff816ff48e>] ? __alloc_skb+0x7e/0x280 Feb 9 10:58:08 mini1 kernel: [ 43.100409] [<ffffffff81752f17>] ip_generic_getfrag+0x47/0xd0 Feb 9 10:58:08 mini1 kernel: [ 43.100446] [<ffffffff8177aecd>] raw_getfrag+0xad/0x100 Feb 9 10:58:08 mini1 kernel: [ 43.100481] [<ffffffff817547a2>] __ip_append_data.isra.46+0x832/0xa30 Feb 9 10:58:08 mini1 kernel: [ 43.100520] [<ffffffff8177ae20>] ? raw_recvmsg+0x1b0/0x1b0 Feb 9 10:58:08 mini1 kernel: [ 43.100557] [<ffffffff81752e17>] ? ip_setup_cork+0xc7/0x120 Feb 9 10:58:08 mini1 kernel: [ 43.100592] [<ffffffff8177ae20>] ? raw_recvmsg+0x1b0/0x1b0 Feb 9 10:58:08 mini1 kernel: [ 43.100628] [<ffffffff817553f3>] ip_append_data+0x83/0xf0 Feb 9 10:58:08 mini1 kernel: [ 43.100663] [<ffffffff8177bb4e>] raw_sendmsg+0x71e/0xb60 Feb 9 10:58:08 mini1 kernel: [ 43.100699] [<ffffffff8138a528>] ? aa_sk_perm+0x78/0x230 Feb 9 10:58:08 mini1 kernel: [ 43.100734] [<ffffffff8138aded>] ? aa_sock_msg_perm+0x5d/0x140 Feb 9 10:58:08 mini1 kernel: [ 43.100771] [<ffffffff8178b01d>] inet_sendmsg+0x6d/0xa0 Feb 9 10:58:08 mini1 kernel: [ 43.100806] [<ffffffff816f6b8e>] sock_sendmsg+0x3e/0x50 Feb 9 10:58:08 mini1 kernel: [ 43.100840] [<ffffffff816f74c6>] ___sys_sendmsg+0x276/0x290 Feb 9 10:58:08 mini1 kernel: [ 43.100876] [<ffffffff81197537>] ? lru_cache_add_active_or_unevictable+0x27/0x90 Feb 9 10:58:08 mini1 kernel: [ 43.100924] [<ffffffff811b79be>] ? handle_pte_fault+0xbae/0x1440 Feb 9 10:58:08 mini1 kernel: [ 43.100963] [<ffffffff818195ae>] ? _raw_spin_unlock_bh+0x1e/0x20 Feb 9 10:58:08 mini1 kernel: [ 43.101003] [<ffffffff816f7e22>] __sys_sendmsg+0x42/0x80 Feb 9 10:58:08 mini1 kernel: [ 43.101038] [<ffffffff816f7e72>] SyS_sendmsg+0x12/0x20 Feb 9 10:58:08 mini1 kernel: [ 43.101072] [<ffffffff81819b5f>] entry_SYSCALL_64_fastpath+0x1c/0x97 Feb 9 10:58:08 mini1 kernel: [ 43.101110] Code: e7 e8 04 ec 01 00 48 89 d8 e9 5d fe ff ff 66 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 89 cb 48 83 ec 38 <4c> 8b 61 10 48 89 55 c0 4c 39 e6 4c 0f 46 e6 4d 85 e4 0f 84 f2 Feb 9 10:58:08 mini1 kernel: [ 43.101341] RIP [<ffffffff813f6d54>] csum_and_copy_from_iter+0x14/0x4a0 Feb 9 10:58:08 mini1 kernel: [ 43.101386] RSP <ffff88004ea5f980> Feb 9 10:58:08 mini1 kernel: [ 43.101408] CR2: 0000000000000020 Feb 9 10:58:08 mini1 kernel: [ 43.109948] ---[ end trace 20d7163eb1bfbc83 ]--- ------------------------------------------------------- -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1748708 Title: Ping hangs with kernel oops To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-meta-lts-xenial/+bug/1748708/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
