Created attachment 1069089 [details] vmcore-dmesg.txt My kernel (4.0.7-300.fc22) crashed with the trace below. abrt-kdump was able to get a trace, but when uploading via ABRT I get a "uReport data is invalid" error. Let me know if there's any way to provide more information (I've uploaded the data to retrace.fedoraproject.org using report_EmergencyAnalysis, FWIW). [123754.229846] BUG: unable to handle kernel NULL pointer dereference at 0000000000000031 [123754.229897] IP: [<ffffffff817051b4>] ipt_do_table+0x2e4/0x730 [123754.229932] PGD 0 [123754.229946] Oops: 0000 [#1] SMP [123754.229967] Modules linked in: uas usb_storage ccm rfcomm xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun nf_conntrack_netbios_ns nf_conntrack_broadcast ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_conntrack ebtable_nat ebtable_broute bridge ebtable_filter ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw bnep fuse snd_hda_codec_hdmi btrfs uvcvideo videobuf2_vmalloc videobuf2_core xor arc4 btusb bluetooth videobuf2_memops v4l2_common raid6_pq brcmsmac cordic brcmutil b43 mac80211 snd_hda_codec_idt snd_hda_codec_generic videodev media cfg80211 snd_hda_intel snd_hda_controller snd_hda_codec [123754.230446] coretemp ssb kvm_intel snd_hwdep mmc_core snd_seq snd_seq_device snd_pcm kvm bcma iTCO_wdt crc32c_intel snd_timer snd hp_wmi sparse_keymap iTCO_vendor_support rfkill lpc_ich soundcore i2c_i801 joydev wmi intel_ips mfd_core shpchp hp_accel acpi_cpufreq lis3lv02d input_polldev nfsd auth_rpcgss nfs_acl lockd grace sunrpc binfmt_misc i915 i2c_algo_bit drm_kms_helper drm 8021q garp stp serio_raw llc mrp r8169 mii video ecryptfs encrypted_keys trusted tpm [123754.230821] CPU: 0 PID: 343 Comm: transmission-gt Not tainted 4.0.7-300.fc22.x86_64 #1 [123754.230858] Hardware name: Hewlett-Packard HP Pavilion dm4 Notebook PC /146A, BIOS F.11 07/08/2010 [123754.230897] task: ffff8801970731b0 ti: ffff88000b110000 task.ti: ffff88000b110000 [123754.230929] RIP: 0010:[<ffffffff817051b4>] [<ffffffff817051b4>] ipt_do_table+0x2e4/0x730 [123754.230988] RSP: 0018:ffff88000b113948 EFLAGS: 00010246 [123754.231015] RAX: 0000000000000001 RBX: ffffc9001162b740 RCX: 0000000000000000 [123754.231045] RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff8801d333e000 [123754.231076] RBP: ffff88000b113a88 R08: ffff8801d1ca5cc0 R09: ffff880083e3bc00 [123754.231107] R10: ffff88000b113cb8 R11: 0000000000000000 R12: ffffc9001162b7b0 [123754.231137] R13: ffff880083e3bcb0 R14: ffffc9001162b740 R15: ffff880171266800 [123754.231168] FS: 00007f94ca3b9700(0000) GS:ffff8801dbc00000(0000) knlGS:0000000000000000 [123754.231202] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [123754.231227] CR2: 0000000000000031 CR3: 000000007109a000 CR4: 00000000000007f0 [123754.231257] Stack: [123754.231269] ffff8801d5003700 0000000000000246 ffff88000b1139b8 ffff88016d8fab40 [123754.231309] ffff8801d219be70 0000000000000003 ffff8801d333e000 ffff88016d8fa90c [123754.231349] ffff88016d8fa900 ffffc900216e2000 0000000100000000 ffff8801d276c600 [123754.231390] Call Trace: [123754.231412] [<ffffffffa09a5020>] ? iptable_nat_ipv4_fn+0x20/0x20 [iptable_nat] [123754.231446] [<ffffffff816b0880>] ? ip_forward_options+0x1c0/0x1c0 [123754.231476] [<ffffffff81707694>] iptable_filter_hook+0x34/0x70 [123754.231505] [<ffffffff816a358a>] nf_iterate+0xaa/0xc0 [123754.231529] [<ffffffff816b0880>] ? ip_forward_options+0x1c0/0x1c0 [123754.231557] [<ffffffff816a3624>] nf_hook_slow+0x84/0x130 [123754.231582] [<ffffffff816b0880>] ? ip_forward_options+0x1c0/0x1c0 [123754.231614] [<ffffffff816b3136>] __ip_local_out+0x76/0x80 [123754.231655] [<ffffffff816b315a>] ip_local_out_sk+0x1a/0x40 [123754.231681] [<ffffffff816b44ba>] ip_send_skb+0x1a/0x50 [123754.231708] [<ffffffff813a95f1>] ? csum_partial+0x11/0x20 [123754.231736] [<ffffffff816dcc75>] udp_send_skb+0x185/0x290 [123754.231762] [<ffffffff816ddb99>] udp_sendmsg+0x309/0xa10 [123754.231789] [<ffffffff8165707f>] ? kfree_skbmem+0x5f/0x70 [123754.231818] [<ffffffff81328262>] ? sock_has_perm+0x72/0x90 [123754.231846] [<ffffffff816ebe69>] inet_sendmsg+0x69/0xb0 [123754.231871] [<ffffffff81328373>] ? selinux_socket_sendmsg+0x23/0x30 [123754.231902] [<ffffffff8164e47f>] do_sock_sendmsg+0x9f/0xc0 [123754.233350] [<ffffffff8164fa89>] SYSC_sendto+0x199/0x200 [123754.234777] [<ffffffff81140acc>] ? __audit_syscall_entry+0xac/0x100 [123754.236198] [<ffffffff810226b5>] ? do_audit_syscall_entry+0x55/0x80 [123754.237638] [<ffffffff810239bb>] ? syscall_trace_enter_phase1+0x14b/0x1b0 [123754.239068] [<ffffffff81023d77>] ? syscall_trace_leave+0xc7/0x140 [123754.240534] [<ffffffff8165084e>] SyS_sendto+0xe/0x10 [123754.241865] [<ffffffff81789f09>] system_call_fastpath+0x12/0x17 [123754.243154] Code: c4 4c 01 f3 4c 39 e3 77 c7 41 8b 87 80 00 00 00 49 83 46 60 01 49 01 46 68 41 f6 87 91 00 00 00 01 0f 85 21 01 00 00 48 8b 43 08 <48> 83 78 30 00 0f 84 a9 00 00 00 48 89 45 98 48 8d 43 20 48 8d [123754.246161] RIP [<ffffffff817051b4>] ipt_do_table+0x2e4/0x730 [123754.247534] RSP <ffff88000b113948> [123754.248865] CR2: 0000000000000031
Please update your kernel to 4.1.6 and let us know if this recreates with that version. F22 has been on 4.1.y for some time now.
OK. But that's the first time I get this trace (maybe because ABRT fixed some some issues with SELinux recently), so I'm not sure I'll see it again.
I haven't seen it again on newer kernels.