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Date: Tue, 14 Jul 2015 13:57:18 +0300 From: Denys Fedoryshchenko <nuclearcat@...learcat.com> To: Netdev <netdev@...r.kernel.org>, mostrows@...thlink.net Subject: 4.1.0, kernel panic, pppoe_release Here is panic message from netconsole. Please let me know if any additional information required. Jul 14 13:49:16 10.0.252.10 [76078.867822] BUG: unable to handle kernel Jul 14 13:49:16 10.0.252.10 NULL pointer dereference Jul 14 13:49:16 10.0.252.10 at 00000000000003f0 Jul 14 13:49:16 10.0.252.10 [76078.868280] IP: Jul 14 13:49:16 10.0.252.10 [<ffffffffa011e12a>] pppoe_release+0x56/0x142 [pppoe] Jul 14 13:49:16 10.0.252.10 [76078.868541] PGD 336e4a067 Jul 14 13:49:16 10.0.252.10 PUD 333f17067 Jul 14 13:49:16 10.0.252.10 PMD 0 Jul 14 13:49:16 10.0.252.10 Jul 14 13:49:16 10.0.252.10 [76078.868918] Oops: 0000 [#1] Jul 14 13:49:16 10.0.252.10 SMP Jul 14 13:49:16 10.0.252.10 Jul 14 13:49:16 10.0.252.10 [76078.869226] Modules linked in: Jul 14 13:49:16 10.0.252.10 netconsole Jul 14 13:49:16 10.0.252.10 configfs Jul 14 13:49:16 10.0.252.10 coretemp Jul 14 13:49:16 10.0.252.10 sch_fq Jul 14 13:49:16 10.0.252.10 cls_fw Jul 14 13:49:16 10.0.252.10 act_police Jul 14 13:49:16 10.0.252.10 cls_u32 Jul 14 13:49:16 10.0.252.10 sch_ingress Jul 14 13:49:16 10.0.252.10 sch_sfq Jul 14 13:49:16 10.0.252.10 sch_htb Jul 14 13:49:16 10.0.252.10 pppoe Jul 14 13:49:16 10.0.252.10 pppox Jul 14 13:49:16 10.0.252.10 ppp_generic Jul 14 13:49:16 10.0.252.10 slhc Jul 14 13:49:16 10.0.252.10 nf_nat_pptp Jul 14 13:49:16 10.0.252.10 nf_nat_proto_gre Jul 14 13:49:16 10.0.252.10 nf_conntrack_pptp Jul 14 13:49:16 10.0.252.10 nf_conntrack_proto_gre Jul 14 13:49:16 10.0.252.10 tun Jul 14 13:49:16 10.0.252.10 xt_REDIRECT Jul 14 13:49:16 10.0.252.10 nf_nat_redirect Jul 14 13:49:16 10.0.252.10 xt_set Jul 14 13:49:16 10.0.252.10 xt_TCPMSS Jul 14 13:49:16 10.0.252.10 ipt_REJECT Jul 14 13:49:16 10.0.252.10 nf_reject_ipv4 Jul 14 13:49:16 10.0.252.10 ts_bm Jul 14 13:49:16 10.0.252.10 xt_string Jul 14 13:49:16 10.0.252.10 xt_connmark Jul 14 13:49:16 10.0.252.10 xt_DSCP Jul 14 13:49:16 10.0.252.10 xt_mark Jul 14 13:49:16 10.0.252.10 xt_tcpudp Jul 14 13:49:16 10.0.252.10 iptable_mangle Jul 14 13:49:16 10.0.252.10 iptable_filter Jul 14 13:49:16 10.0.252.10 iptable_nat Jul 14 13:49:16 10.0.252.10 nf_conntrack_ipv4 Jul 14 13:49:16 10.0.252.10 nf_defrag_ipv4 Jul 14 13:49:16 10.0.252.10 nf_nat_ipv4 Jul 14 13:49:16 10.0.252.10 nf_nat Jul 14 13:49:16 10.0.252.10 nf_conntrack Jul 14 13:49:16 10.0.252.10 ip_tables Jul 14 13:49:16 10.0.252.10 x_tables Jul 14 13:49:16 10.0.252.10 ip_set_hash_ip Jul 14 13:49:16 10.0.252.10 ip_set Jul 14 13:49:16 10.0.252.10 nfnetlink Jul 14 13:49:16 10.0.252.10 8021q Jul 14 13:49:16 10.0.252.10 garp Jul 14 13:49:16 10.0.252.10 mrp Jul 14 13:49:16 10.0.252.10 stp Jul 14 13:49:16 10.0.252.10 llc Jul 14 13:49:16 10.0.252.10 [last unloaded: netconsole] Jul 14 13:49:16 10.0.252.10 Jul 14 13:49:16 10.0.252.10 [76078.873195] CPU: 3 PID: 2940 Comm: accel-pppd Not tainted 4.1.0-build-0074 #7 Jul 14 13:49:16 10.0.252.10 [76078.873396] Hardware name: HP ProLiant DL320e Gen8 v2, BIOS P80 04/02/2015 Jul 14 13:49:16 10.0.252.10 [76078.873598] task: ffff8800b1886ba0 ti: ffff8800b09f4000 task.ti: ffff8800b09f4000 Jul 14 13:49:16 10.0.252.10 [76078.873929] RIP: 0010:[<ffffffffa011e12a>] Jul 14 13:49:16 10.0.252.10 [<ffffffffa011e12a>] pppoe_release+0x56/0x142 [pppoe] Jul 14 13:49:16 10.0.252.10 [76078.874317] RSP: 0018:ffff8800b09f7e28 EFLAGS: 00010202 Jul 14 13:49:16 10.0.252.10 [76078.874512] RAX: 0000000000000000 RBX: ffff88032a214400 RCX: 0000000000000000 Jul 14 13:49:16 10.0.252.10 [76078.874709] RDX: 000000000000000d RSI: 00000000fffffe01 RDI: ffffffff8180d6da Jul 14 13:49:16 10.0.252.10 [76078.874906] RBP: ffff8800b09f7e68 R08: 0000000000000000 R09: 0000000000000000 Jul 14 13:49:16 10.0.252.10 [76078.875102] R10: ffff88031ef6a110 R11: 0000000000000293 R12: ffff88030f8d8fc0 Jul 14 13:49:16 10.0.252.10 [76078.875299] R13: ffff88030f8d8ff0 R14: ffff88033115ee40 R15: ffff8803394e4920 Jul 14 13:49:16 10.0.252.10 [76078.875499] FS: 00007f79b602c700(0000) GS:ffff880347460000(0000) knlGS:0000000000000000 Jul 14 13:49:16 10.0.252.10 [76078.875837] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Jul 14 13:49:16 10.0.252.10 [76078.876036] CR2: 00000000000003f0 CR3: 0000000335425000 CR4: 00000000001407e0 Jul 14 13:49:16 10.0.252.10 [76078.876239] Stack: Jul 14 13:49:16 10.0.252.10 [76078.876434] ffff88033ac45c80 Jul 14 13:49:16 10.0.252.10 0000000000000000 Jul 14 13:49:16 10.0.252.10 0000000100000000 Jul 14 13:49:16 10.0.252.10 ffff88030f8d8fc0 Jul 14 13:49:16 10.0.252.10 Jul 14 13:49:16 10.0.252.10 [76078.877001] ffffffffa0120260 Jul 14 13:49:16 10.0.252.10 ffff88030f8d8ff0 Jul 14 13:49:16 10.0.252.10 ffff88033115ee40 Jul 14 13:49:16 10.0.252.10 ffff8803394e4920 Jul 14 13:49:16 10.0.252.10 Jul 14 13:49:16 10.0.252.10 [76078.877564] ffff8800b09f7e88 Jul 14 13:49:16 10.0.252.10 ffffffff81809e2e Jul 14 13:49:16 10.0.252.10 ffff88031ef6a100 Jul 14 13:49:16 10.0.252.10 0000000000000008 Jul 14 13:49:16 10.0.252.10 Jul 14 13:49:16 10.0.252.10 [76078.878128] Call Trace: Jul 14 13:49:16 10.0.252.10 [76078.878327] [<ffffffff81809e2e>] sock_release+0x1a/0x78 Jul 14 13:49:16 10.0.252.10 [76078.878528] [<ffffffff81809e99>] sock_close+0xd/0x11 Jul 14 13:49:16 10.0.252.10 [76078.878728] [<ffffffff81150395>] __fput+0xdf/0x193 Jul 14 13:49:16 10.0.252.10 [76078.878926] [<ffffffff81150477>] ____fput+0x9/0xb Jul 14 13:49:16 10.0.252.10 [76078.879124] [<ffffffff810cfa95>] task_work_run+0x85/0x9c Jul 14 13:49:16 10.0.252.10 [76078.879326] [<ffffffff81002979>] do_notify_resume+0x40/0x4e Jul 14 13:49:16 10.0.252.10 [76078.879527] [<ffffffff818a4a0a>] int_signal+0x12/0x17 Jul 14 13:49:16 10.0.252.10 [76078.879726] Code: Jul 14 13:49:16 10.0.252.10 48 Jul 14 13:49:16 10.0.252.10 8b Jul 14 13:49:16 10.0.252.10 83 Jul 14 13:49:16 10.0.252.10 e0 Jul 14 13:49:16 10.0.252.10 00 Jul 14 13:49:16 10.0.252.10 00 Jul 14 13:49:16 10.0.252.10 00 Jul 14 13:49:16 10.0.252.10 a8 Jul 14 13:49:16 10.0.252.10 01 Jul 14 13:49:16 10.0.252.10 74 Jul 14 13:49:16 10.0.252.10 12 Jul 14 13:49:16 10.0.252.10 48 Jul 14 13:49:16 10.0.252.10 89 Jul 14 13:49:16 10.0.252.10 df Jul 14 13:49:16 10.0.252.10 e8 Jul 14 13:49:16 10.0.252.10 87 Jul 14 13:49:16 10.0.252.10 f9 Jul 14 13:49:16 10.0.252.10 6e Jul 14 13:49:16 10.0.252.10 e1 Jul 14 13:49:16 10.0.252.10 b8 Jul 14 13:49:16 10.0.252.10 f7 Jul 14 13:49:16 10.0.252.10 ff Jul 14 13:49:16 10.0.252.10 ff Jul 14 13:49:16 10.0.252.10 ff Jul 14 13:49:16 10.0.252.10 e9 Jul 14 13:49:16 10.0.252.10 eb Jul 14 13:49:16 10.0.252.10 00 Jul 14 13:49:16 10.0.252.10 00 Jul 14 13:49:16 10.0.252.10 00 Jul 14 13:49:16 10.0.252.10 8a Jul 14 13:49:16 10.0.252.10 43 Jul 14 13:49:16 10.0.252.10 12 Jul 14 13:49:16 10.0.252.10 a8 Jul 14 13:49:16 10.0.252.10 0b Jul 14 13:49:16 10.0.252.10 74 Jul 14 13:49:16 10.0.252.10 1c Jul 14 13:49:16 10.0.252.10 48 Jul 14 13:49:16 10.0.252.10 8b Jul 14 13:49:16 10.0.252.10 83 Jul 14 13:49:16 10.0.252.10 b0 Jul 14 13:49:16 10.0.252.10 02 Jul 14 13:49:16 10.0.252.10 00 Jul 14 13:49:16 10.0.252.10 00 Jul 14 13:49:16 10.0.252.10 Jul 14 13:49:16 10.0.252.10 8b Jul 14 13:49:16 10.0.252.10 80 Jul 14 13:49:16 10.0.252.10 f0 Jul 14 13:49:16 10.0.252.10 03 Jul 14 13:49:16 10.0.252.10 00 Jul 14 13:49:16 10.0.252.10 00 Jul 14 13:49:16 10.0.252.10 65 Jul 14 13:49:16 10.0.252.10 ff Jul 14 13:49:16 10.0.252.10 08 Jul 14 13:49:16 10.0.252.10 48 Jul 14 13:49:16 10.0.252.10 c7 Jul 14 13:49:16 10.0.252.10 83 Jul 14 13:49:16 10.0.252.10 b0 Jul 14 13:49:16 10.0.252.10 02 Jul 14 13:49:16 10.0.252.10 00 Jul 14 13:49:16 10.0.252.10 00 Jul 14 13:49:16 10.0.252.10 00 Jul 14 13:49:16 10.0.252.10 00 Jul 14 13:49:16 10.0.252.10 00 Jul 14 13:49:16 10.0.252.10 00 Jul 14 13:49:16 10.0.252.10 Jul 14 13:49:16 10.0.252.10 [76078.883913] RIP Jul 14 13:49:16 10.0.252.10 [<ffffffffa011e12a>] pppoe_release+0x56/0x142 [pppoe] Jul 14 13:49:16 10.0.252.10 [76078.884171] RSP <ffff8800b09f7e28> Jul 14 13:49:16 10.0.252.10 [76078.884368] CR2: 00000000000003f0 Jul 14 10:49:16 10.0.252.10 kernel: [76078.867822] BUG: unable to handle kernel NULL pointer dereference at 00000000000003f0 Jul 14 10:49:16 10.0.252.10 kernel: [76078.868280] IP: [<ffffffffa011e12a>] pppoe_release+0x56/0x142 [pppoe] Jul 14 10:49:16 10.0.252.10 kernel: [76078.868541] PGD 336e4a067 PUD 333f17067 PMD 0 Jul 14 10:49:16 10.0.252.10 kernel: [76078.868918] Oops: 0000 [#1] SMP Jul 14 10:49:16 10.0.252.10 kernel: [76078.869226] Modules linked in: netconsole configfs coretemp sch_fq cls_fw act_police cls_u32 sch_ingress sch_sfq sch_htb pppoe pppox ppp_generic slhc nf_nat_pptp nf_nat_proto_gre nf_conntrack_pptp nf_conntrack_proto_gre tun Jul 14 10:49:16 10.0.252.10 kernel: [76078.873195] CPU: 3 PID: 2940 Comm: accel-pppd Not tainted 4.1.0-build-0074 #7 Jul 14 10:49:16 10.0.252.10 kernel: [76078.873396] Hardware name: HP ProLiant DL320e Gen8 v2, BIOS P80 04/02/2015 Jul 14 10:49:16 10.0.252.10 kernel: [76078.873598] task: ffff8800b1886ba0 ti: ffff8800b09f4000 task.ti: ffff8800b09f4000 Jul 14 10:49:16 10.0.252.10 kernel: [76078.873929] RIP: 0010:[<ffffffffa011e12a>] [<ffffffffa011e12a>] pppoe_release+0x56/0x142 [pppoe] Jul 14 10:49:16 10.0.252.10 kernel: [76078.874317] RSP: 0018:ffff8800b09f7e28 EFLAGS: 00010202 Jul 14 10:49:16 10.0.252.10 kernel: [76078.874512] RAX: 0000000000000000 RBX: ffff88032a214400 RCX: 0000000000000000 Jul 14 10:49:16 10.0.252.10 kernel: [76078.874709] RDX: 000000000000000d RSI: 00000000fffffe01 RDI: ffffffff8180d6da Jul 14 10:49:16 10.0.252.10 kernel: [76078.874906] RBP: ffff8800b09f7e68 R08: 0000000000000000 R09: 0000000000000000 Jul 14 10:49:16 10.0.252.10 kernel: [76078.875102] R10: ffff88031ef6a110 R11: 0000000000000293 R12: ffff88030f8d8fc0 Jul 14 10:49:16 10.0.252.10 kernel: [76078.875299] R13: ffff88030f8d8ff0 R14: ffff88033115ee40 R15: ffff8803394e4920 Jul 14 10:49:16 10.0.252.10 kernel: [76078.875499] FS: 00007f79b602c700(0000) GS:ffff880347460000(0000) knlGS:0000000000000000 Jul 14 10:49:16 10.0.252.10 kernel: [76078.875837] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Jul 14 10:49:16 10.0.252.10 kernel: [76078.876036] CR2: 00000000000003f0 CR3: 0000000335425000 CR4: 00000000001407e0 Jul 14 10:49:16 10.0.252.10 kernel: [76078.876239] Stack: Jul 14 10:49:16 10.0.252.10 kernel: [76078.876434] ffff88033ac45c80 0000000000000000 0000000100000000 ffff88030f8d8fc0 Jul 14 10:49:16 10.0.252.10 kernel: [76078.877001] ffffffffa0120260 ffff88030f8d8ff0 ffff88033115ee40 ffff8803394e4920 Jul 14 10:49:16 10.0.252.10 kernel: [76078.877564] ffff8800b09f7e88 ffffffff81809e2e ffff88031ef6a100 0000000000000008 Jul 14 10:49:16 10.0.252.10 kernel: [76078.878128] Call Trace: Jul 14 10:49:16 10.0.252.10 kernel: [76078.878327] [<ffffffff81809e2e>] sock_release+0x1a/0x78 Jul 14 10:49:16 10.0.252.10 kernel: [76078.878528] [<ffffffff81809e99>] sock_close+0xd/0x11 Jul 14 10:49:16 10.0.252.10 kernel: [76078.878728] [<ffffffff81150395>] __fput+0xdf/0x193 Jul 14 10:49:16 10.0.252.10 kernel: [76078.878926] [<ffffffff81150477>] ____fput+0x9/0xb Jul 14 10:49:16 10.0.252.10 kernel: [76078.879124] [<ffffffff810cfa95>] task_work_run+0x85/0x9c Jul 14 10:49:16 10.0.252.10 kernel: [76078.879326] [<ffffffff81002979>] do_notify_resume+0x40/0x4e Jul 14 10:49:16 10.0.252.10 kernel: [76078.879527] [<ffffffff818a4a0a>] int_signal+0x12/0x17 Jul 14 10:49:16 10.0.252.10 kernel: [76078.879726] Code: 48 8b 83 e0 00 00 00 a8 01 74 12 48 89 df e8 87 f9 6e e1 b8 f7 ff ff ff e9 eb 00 00 00 8a 43 12 a8 0b 74 1c 48 8b 83 b0 02 00 00 <48> 8b 80 f0 03 00 00 65 ff 08 48 c7 83 b0 02 00 00 00 00 00 00 Jul 14 10:49:16 10.0.252.10 kernel: [76078.883913] RIP [<ffffffffa011e12a>] pppoe_release+0x56/0x142 [pppoe] Jul 14 10:49:16 10.0.252.10 kernel: [76078.884171] RSP <ffff8800b09f7e28> Jul 14 10:49:16 10.0.252.10 kernel: [76078.884368] CR2: 00000000000003f0 Jul 14 13:49:16 10.0.252.10 [76078.884972] ---[ end trace 7fa41f8b4758f1fa ]--- Jul 14 10:49:16 10.0.252.10 accel-pppd: pppoe: discard PADR packet (incorrect AC-Cookie) Jul 14 10:49:17 10.0.252.10 kernel: [76078.884972] ---[ end trace 7fa41f8b4758f1fa ]--- Jul 14 13:49:17 10.0.252.10 [76078.936849] Kernel panic - not syncing: Fatal exception Jul 14 13:49:17 10.0.252.10 [76078.937054] Kernel Offset: disabled -- To 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