[Bug 1786752] Re: Reference counter issue in 4.15 (nf_xfrm_me_harder / dst_release)

Hi
Do you find fix for this bug
I use latest kernel 4.19.8 and have same problem see down
i use pppoe with 1k+ users if i activate shaper with hfsc and imq machine crash and reboot
after stop shaper for test mashine only send in dmesg bug error mesg.

This is a Kernel BUG and need to by fix
if any need more info or debug i will send you.


[93408.910441] WARNING: CPU: 1 PID: 0 at include/net/dst.h:239 nf_xfrm_me_harder+0xe7/0x130 [nf_nat]
[93408.945500] Modules linked in: udp_diag unix_diag af_packet_diag sch_hfsc iptable_filter xt_IMQ iptable_mangle xt_addrtype xt_nat ipt_MASQUERADE iptable_nat nf_nat_ipv4 ip_tables bpfilter sch_fq_codel netconsole r8169 tg3 libphy igb i2c_algo_bit ixgb nf_nat_pptp nf_nat_proto_gre nf_conntrack_pptp nf_conntrack_proto_gre nf_nat_tftp nf_conntrack_tftp nf_nat_ftp nf_conntrack_ftp nf_nat nf_conntrack nf_defrag_ipv4 pppoe pptp gre pppox sha1_mb mcryptd sha1_ssse3 sha1_generic arc4 ppp_mppe ppp_generic slhc megaraid_sas [last unloaded: imq]
[93409.103093] CPU: 1 PID: 0 Comm: PDS/1 Tainted: G O 4.19.6 #1
[93409.124009] Hardware name: Supermicro Super Server/X11SSZ-F, BIOS 2.2b 02/12/2018
[93409.166624] RIP: 0010:nf_xfrm_me_harder+0xe7/0x130 [nf_nat]
[93409.188447] Code: 48 8b 5c 24 60 65 48 33 1c 25 28 00 00 00 75 53 48 83 c4 68 5b 5d 41 5c c3 85 c0 74 0d 8d 48 01 f0 0f b1 0a 74 86 85 c0 75 f3 <0f> 0b e9 7b ff ff ff 29 c6 31 d2 b9 20 00 48 00 4c 89 e7 e8 31 27
[93409.254096] RSP: 0018:ffff888454c83ce0 EFLAGS: 00010246
[93409.275791] RAX: 0000000000000000 RBX: ffffffff81e83f40 RCX: 00000000000098a2
[93409.297628] RDX: 0000000000000000 RSI: ffff88843c229480 RDI: 0000000000000038
[93409.319099] RBP: 0000000000000000 R08: 0000000000000038 R09: ffff8883e2811000
[93409.340547] R10: 0000000000000009 R11: 0000000000000000 R12: ffff8883e68d7a00
[93409.361901] R13: ffff888454c83db8 R14: ffff888454c9f64c R15: ffff888454c9f650
[93409.383419] FS: 0000000000000000(0000) GS:ffff888454c80000(0000) knlGS:0000000000000000
[93409.427294] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[93409.449919] CR2: 00007f864054e730 CR3: 0000000001e0a006 CR4: 00000000001606e0
[93409.472746] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[93409.495480] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[93409.518035] Call Trace:
[93409.539897] <IRQ>
[93409.561039] ? nf_nat_ipv4_manip_pkt+0x54/0x100 [nf_nat_ipv4]
[93409.582440] nf_nat_ipv4_out+0x78/0x90 [nf_nat_ipv4]
[93409.603476] nf_hook_slow+0x36/0xd0
[93409.623865] ip_output+0x9f/0xd0
[93409.643603] ? ip_fragment.constprop.5+0x70/0x70
[93409.663095] ip_forward+0x328/0x440
[93409.681987] ? ip_defrag.cold.3+0x22/0x22
[93409.700405] ip_rcv+0x8a/0xb0
[93409.718201] ? ip_rcv_finish_core.isra.0+0x340/0x340
[93409.735914] __netif_receive_skb_one_core+0x4b/0x70
[93409.753308] process_backlog+0x95/0x130
[93409.770199] net_rx_action+0x122/0x2d0
[93409.786744] __do_softirq+0xba/0x206
[93409.802880] irq_exit+0xae/0xf0
[93409.818424] call_function_single_interrupt+0xf/0x20
[93409.834147] </IRQ>
[93409.849337] RIP: 0010:mwait_idle+0x50/0x80
[93409.864491] Code: 0f ba e2 27 72 3a 31 d2 65 48 8b 04 25 40 4c 01 00 48 89 d1 0f 01 c8 48 8b 00 48 c1 e8 03 83 e0 01 75 2b 48 89 c1 fb 0f 01 c9 <65> 8b 05 69 b2 9e 7e 65 48 8b 04 25 40 4c 01 00 f0 80 60 02 df c3
[93409.913067] RSP: 0018:ffffc900000b3ed0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff04
[93409.946216] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
[93409.963281] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888454c9ef80
[93409.980003] RBP: ffffffff81e943a0 R08: 0000000000000000 R09: 000000000001e540
[93409.996513] R10: 0000fefbc9e70705 R11: 0000000000000001 R12: 0000000000000000
[93410.013011] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[93410.029583] do_idle+0x1c7/0x1e0
[93410.045584] cpu_startup_entry+0x6a/0x70
[93410.061835] start_secondary+0x165/0x190
[93410.077838] secondary_startup_64+0xa4/0xb0
[93410.093605] ---[ end trace 2bdcfd51408010e6 ]---
[93410.109465] dst_release: dst:00000000aa09d44e refcnt:-1
[167366.275640] WARNING: CPU: 1 PID: 0 at include/net/dst.h:239 nf_xfrm_me_harder+0xe7/0x130 [nf_nat]
[167366.309111] Modules linked in: udp_diag unix_diag af_packet_diag sch_hfsc iptable_filter xt_IMQ iptable_mangle xt_addrtype xt_nat ipt_MASQUERADE iptable_nat nf_nat_ipv4 ip_tables bpfilter sch_fq_codel netconsole r8169 tg3 libphy igb i2c_algo_bit ixgb nf_nat_pptp nf_nat_proto_gre nf_conntrack_pptp nf_conntrack_proto_gre nf_nat_tftp nf_conntrack_tftp nf_nat_ftp nf_conntrack_ftp nf_nat nf_conntrack nf_defrag_ipv4 pppoe pptp gre pppox sha1_mb mcryptd sha1_ssse3 sha1_generic arc4 ppp_mppe ppp_generic slhc megaraid_sas [last unloaded: imq]
[167366.464130] CPU: 1 PID: 0 Comm: PDS/1 Tainted: G W O 4.19.6 #1
[167366.485631] Hardware name: Supermicro Super Server/X11SSZ-F, BIOS 2.2b 02/12/2018
[167366.528653] RIP: 0010:nf_xfrm_me_harder+0xe7/0x130 [nf_nat]
[167366.550679] Code: 48 8b 5c 24 60 65 48 33 1c 25 28 00 00 00 75 53 48 83 c4 68 5b 5d 41 5c c3 85 c0 74 0d 8d 48 01 f0 0f b1 0a 74 86 85 c0 75 f3 <0f> 0b e9 7b ff ff ff 29 c6 31 d2 b9 20 00 48 00 4c 89 e7 e8 31 27
[167366.616853] RSP: 0018:ffff888454c83ce0 EFLAGS: 00010246
[167366.638487] RAX: 0000000000000000 RBX: ffffffff81e83f40 RCX: 00000000000078d8
[167366.681541] RDX: 0000000000000000 RSI: ffff88843043dc00 RDI: 0000000000000034
[167366.726519] RBP: 0000000000000000 R08: 0000000000000034 R09: ffff88843c0cb800
[167366.773419] R10: 0000000000000001 R11: 00000000a184220c R12: ffff8884233f9f00
[167366.822018] R13: ffff888454c83db8 R14: ffff888454c9f64c R15: ffff888454c9f650
[167366.872587] FS: 0000000000000000(0000) GS:ffff888454c80000(0000) knlGS:0000000000000000
[167366.924358] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[167366.950272] CR2: 00007f05086ba730 CR3: 0000000001e0a005 CR4: 00000000001606e0
[167367.001147] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[167367.051930] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[167367.102616] Call Trace:
[167367.127176] <IRQ>
[167367.150970] ? nf_nat_ipv4_manip_pkt+0x54/0x100 [nf_nat_ipv4]
[167367.174995] nf_nat_ipv4_out+0x78/0x90 [nf_nat_ipv4]
[167367.198776] nf_hook_slow+0x36/0xd0
[167367.221966] ip_output+0x9f/0xd0
[167367.244707] ? ip_fragment.constprop.5+0x70/0x70
[167367.267413] ip_forward+0x328/0x440
[167367.289531] ? ip_defrag.cold.3+0x22/0x22
[167367.311506] ip_rcv+0x8a/0xb0
[167367.333045] ? ip_rcv_finish_core.isra.0+0x340/0x340
[167367.354669] __netif_receive_skb_one_core+0x4b/0x70
[167367.375857] process_backlog+0x95/0x130
[167367.396512] net_rx_action+0x122/0x2d0
[167367.416657] __do_softirq+0xba/0x206
[167367.436252] irq_exit+0xae/0xf0
[167367.455217] call_function_single_interrupt+0xf/0x20
[167367.474067] </IRQ>
[167367.492164] RIP: 0010:mwait_idle+0x50/0x80
[167367.510058] Code: 0f ba e2 27 72 3a 31 d2 65 48 8b 04 25 40 4c 01 00 48 89 d1 0f 01 c8 48 8b 00 48 c1 e8 03 83 e0 01 75 2b 48 89 c1 fb 0f 01 c9 <65> 8b 05 69 b2 9e 7e 65 48 8b 04 25 40 4c 01 00 f0 80 60 02 df c3
[167367.563719] RSP: 0018:ffffc900000b3ed0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff04
[167367.599058] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
[167367.634529] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888454c9ef80
[167367.669999] RBP: ffffffff81e943a0 R08: 0000000000000000 R09: 000000000001e540
[167367.706047] R10: 0001c8c669f1f230 R11: 0000000000000001 R12: 0000000000000000
[167367.744336] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[167367.783856] do_idle+0x1c7/0x1e0
[167367.803883] cpu_startup_entry+0x6a/0x70
[167367.823888] start_secondary+0x165/0x190
[167367.843764] secondary_startup_64+0xa4/0xb0
[167367.863653] ---[ end trace 2bdcfd51408010e7 ]---
[167367.883692] dst_release: dst:00000000a44e0ec4 refcnt:-1
[252467.564184] WARNING: CPU: 2 PID: 0 at include/net/dst.h:239 nf_xfrm_me_harder+0xe7/0x130 [nf_nat]
[252467.605281] Modules linked in: udp_diag unix_diag af_packet_diag sch_hfsc iptable_filter xt_IMQ iptable_mangle xt_addrtype xt_nat ipt_MASQUERADE iptable_nat nf_nat_ipv4 ip_tables bpfilter sch_fq_codel netconsole r8169 tg3 libphy igb i2c_algo_bit ixgb nf_nat_pptp nf_nat_proto_gre nf_conntrack_pptp nf_conntrack_proto_gre nf_nat_tftp nf_conntrack_tftp nf_nat_ftp nf_conntrack_ftp nf_nat nf_conntrack nf_defrag_ipv4 pppoe pptp gre pppox sha1_mb mcryptd sha1_ssse3 sha1_generic arc4 ppp_mppe ppp_generic slhc megaraid_sas [last unloaded: imq]
[252467.790545] CPU: 2 PID: 0 Comm: PDS/2 Tainted: G W O 4.19.6 #1
[252467.815020] Hardware name: Supermicro Super Server/X11SSZ-F, BIOS 2.2b 02/12/2018
[252467.862847] RIP: 0010:nf_xfrm_me_harder+0xe7/0x130 [nf_nat]
[252467.886814] Code: 48 8b 5c 24 60 65 48 33 1c 25 28 00 00 00 75 53 48 83 c4 68 5b 5d 41 5c c3 85 c0 74 0d 8d 48 01 f0 0f b1 0a 74 86 85 c0 75 f3 <0f> 0b e9 7b ff ff ff 29 c6 31 d2 b9 20 00 48 00 4c 89 e7 e8 31 27
[252467.958250] RSP: 0018:ffff888454d03ce0 EFLAGS: 00010246
[252467.981527] RAX: 0000000000000000 RBX: ffffffff81e83f40 RCX: 00000000000042c0
[252468.027286] RDX: 0000000000000000 RSI: ffff8883d6739e40 RDI: 000000000000003c
[252468.073045] RBP: 0000000000000000 R08: 000000000000003c R09: ffff8883dd6c0000
[252468.119276] R10: 0000000000000001 R11: 00000000c6267cc9 R12: ffff8884233f9600
[252468.167556] R13: ffff888454d03db8 R14: ffff888454d1f64c R15: ffff888454d1f650
[252468.217830] FS: 0000000000000000(0000) GS:ffff888454d00000(0000) knlGS:0000000000000000
[252468.269423] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[252468.295296] CR2: 00007fe353cc1730 CR3: 0000000001e0a006 CR4: 00000000001606e0
[252468.346050] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[252468.396711] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[252468.447279] Call Trace:
[252468.471779] <IRQ>
[252468.495502] ? nf_nat_ipv4_manip_pkt+0x54/0x100 [nf_nat_ipv4]
[252468.519483] nf_nat_ipv4_out+0x78/0x90 [nf_nat_ipv4]
[252468.543220] nf_hook_slow+0x36/0xd0
[252468.566376] ip_output+0x9f/0xd0
[252468.589096] ? ip_fragment.constprop.5+0x70/0x70
[252468.611746] ip_forward+0x328/0x440
[252468.633842] ? ip_defrag.cold.3+0x22/0x22
[252468.655784] ip_rcv+0x8a/0xb0
[252468.677304] ? ip_rcv_finish_core.isra.0+0x340/0x340
[252468.698893] __netif_receive_skb_one_core+0x4b/0x70
[252468.720046] process_backlog+0x95/0x130
[252468.740681] net_rx_action+0x122/0x2d0
[252468.760788] __do_softirq+0xba/0x206
[252468.780328] irq_exit+0xae/0xf0
[252468.799242] call_function_single_interrupt+0xf/0x20
[252468.818051] </IRQ>
[252468.836129] RIP: 0010:mwait_idle+0x50/0x80
[252468.854017] Code: 0f ba e2 27 72 3a 31 d2 65 48 8b 04 25 40 4c 01 00 48 89 d1 0f 01 c8 48 8b 00 48 c1 e8 03 83 e0 01 75 2b 48 89 c1 fb 0f 01 c9 <65> 8b 05 69 b2 9e 7e 65 48 8b 04 25 40 4c 01 00 f0 80 60 02 df c3
[252468.907657] RSP: 0018:ffffc900000bbed0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff04
[252468.942894] RAX: 0000000000000000 RBX: 0000000000000002 RCX: 0000000000000000
[252468.978260] RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff888454d1ef80
[252469.013627] RBP: ffffffff81e943a0 R08: ffff888454d1b960 R09: 000000000001e540
[252469.049574] R10: 0002b0f8f8728b04 R11: 0000000000000001 R12: 0000000000000000
[252469.087768] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[252469.127132] do_idle+0x1c7/0x1e0
[252469.147082] cpu_startup_entry+0x6a/0x70
[252469.167010] start_secondary+0x165/0x190
[252469.186819] secondary_startup_64+0xa4/0xb0
[252469.206652] ---[ end trace 2bdcfd51408010e8 ]---
[252469.226646] dst_release: dst:00000000e410838d refcnt:-1
[254737.320656] WARNING: CPU: 0 PID: 0 at include/net/dst.h:239 nf_xfrm_me_harder+0xe7/0x130 [nf_nat]
[254737.361598] Modules linked in: udp_diag unix_diag af_packet_diag sch_hfsc iptable_filter xt_IMQ iptable_mangle xt_addrtype xt_nat ipt_MASQUERADE iptable_nat nf_nat_ipv4 ip_tables bpfilter sch_fq_codel netconsole r8169 tg3 libphy igb i2c_algo_bit ixgb nf_nat_pptp nf_nat_proto_gre nf_conntrack_pptp nf_conntrack_proto_gre nf_nat_tftp nf_conntrack_tftp nf_nat_ftp nf_conntrack_ftp nf_nat nf_conntrack nf_defrag_ipv4 pppoe pptp gre pppox sha1_mb mcryptd sha1_ssse3 sha1_generic arc4 ppp_mppe ppp_generic slhc megaraid_sas [last unloaded: imq]
[254737.546326] CPU: 0 PID: 0 Comm: PDS/0 Tainted: G W O 4.19.6 #1
[254737.570734] Hardware name: Supermicro Super Server/X11SSZ-F, BIOS 2.2b 02/12/2018
[254737.618470] RIP: 0010:nf_xfrm_me_harder+0xe7/0x130 [nf_nat]
[254737.642396] Code: 48 8b 5c 24 60 65 48 33 1c 25 28 00 00 00 75 53 48 83 c4 68 5b 5d 41 5c c3 85 c0 74 0d 8d 48 01 f0 0f b1 0a 74 86 85 c0 75 f3 <0f> 0b e9 7b ff ff ff 29 c6 31 d2 b9 20 00 48 00 4c 89 e7 e8 31 27
[254737.713703] RSP: 0018:ffff888454c03cb0 EFLAGS: 00010246
[254737.736957] RAX: 0000000000000000 RBX: ffffffff81e83f40 RCX: 00000000000078be
[254737.782676] RDX: 0000000000000000 RSI: ffff8883e2a560c0 RDI: 000000000000003c
[254737.828402] RBP: 0000000000000000 R08: 000000000000003c R09: ffff88841f67d800
[254737.874593] R10: 0000000000000001 R11: 0000000000000000 R12: ffff8883e50e0500
[254737.922847] R13: ffff888454c03d88 R14: ffff888454c1f64c R15: ffff888454c1f650
[254737.973069] FS: 0000000000000000(0000) GS:ffff888454c00000(0000) knlGS:0000000000000000
[254738.024670] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[254738.050529] CR2: 00007f76b6670730 CR3: 0000000001e0a006 CR4: 00000000001606f0
[254738.101269] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[254738.151916] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[254738.202466] Call Trace:
[254738.226958] <IRQ>
[254738.250700] ? nf_nat_ipv4_manip_pkt+0x54/0x100 [nf_nat_ipv4]
[254738.274685] nf_nat_ipv4_out+0x78/0x90 [nf_nat_ipv4]
[254738.298423] nf_hook_slow+0x36/0xd0
[254738.321582] ip_output+0x9f/0xd0
[254738.344317] ? ip_fragment.constprop.5+0x70/0x70
[254738.366982] ip_forward+0x328/0x440
[254738.389094] ? ip_defrag.cold.3+0x22/0x22
[254738.411064] ip_rcv+0x8a/0xb0
[254738.432586] ? ip_rcv_finish_core.isra.0+0x340/0x340
[254738.454192] __netif_receive_skb_one_core+0x4b/0x70
[254738.475360] process_backlog+0x95/0x130
[254738.495997] net_rx_action+0x122/0x2d0
[254738.516104] __do_softirq+0xba/0x206
[254738.535681] irq_exit+0xae/0xf0
[254738.554656] do_IRQ+0x72/0xc0
[254738.572996] common_interrupt+0xf/0xf
[254738.590876] </IRQ>
[254738.608002] RIP: 0010:mwait_idle+0x50/0x80
[254738.624949] Code: 0f ba e2 27 72 3a 31 d2 65 48 8b 04 25 40 4c 01 00 48 89 d1 0f 01 c8 48 8b 00 48 c1 e8 03 83 e0 01 75 2b 48 89 c1 fb 0f 01 c9 <65> 8b 05 69 b2 9e 7e 65 48 8b 04 25 40 4c 01 00 f0 80 60 02 df c3
[254738.675961] RSP: 0018:ffffffff81e03eb0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffffd4
[254738.709741] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
[254738.743461] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888454c1ef80
[254738.777184] RBP: ffffffff81e943a0 R08: ffffc90008137948 R09: 000000000001e540
[254738.812743] R10: 0002b72a62932bc1 R11: 0000000000000001 R12: 0000000000000000
[254738.849773] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[254738.888446] do_idle+0x1c7/0x1e0
[254738.907950] ? do_idle+0x2/0x1e0
[254738.927221] cpu_startup_entry+0x6a/0x70
[254738.946563] start_kernel+0x3d6/0x3f6
[254738.965869] secondary_startup_64+0xa4/0xb0
[254738.985115] ---[ end trace 2bdcfd51408010e9 ]---
[254739.004456] dst_release: dst:000000008c9d8929 refcnt:-1

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https://bugs.launchpad.net/bugs/1786752

Title:
Reference counter issue in 4.15 (nf_xfrm_me_harder / dst_release)

Status in linux package in Ubuntu:
Confirmed

Bug description:
Since upgrading from 14.04 to 18.04, we see very frequent warnings
about negative refcnts in dst_release:

[ 3117.882227] WARNING: CPU: 6 PID: 0 at /build/linux-I4R9hO/linux-4.15.0/include/net/dst.h:256 nf_xfrm_me_harder+0x127/0x140 [nf_nat]
[ 3117.882229] Modules linked in: xt_policy cls_u32 sch_sfq ip_vti ip_tunnel authenc echainiv xfrm6_mode_tunnel xfrm4_mode_tunnel xfrm4_tunnel tunnel4 ipcomp xfrm_ipcomp esp4 ah4 af_key nfnetlink_queue nfnetlink_log sch_htb xt_TPROXY xt_multiport veth nf_conntrack_netlink nfnetlink xfrm_user xfrm_algo br_netfilter bridge overlay macvlan 8021q garp mrp stp llc bonding algif_skcipher af_alg xt_hl ip6t_rt nf_conntrack_ipv6 nf_defrag_ipv6 ip6t_REJECT nf_reject_ipv6 xt_nat ipt_MASQUERADE nf_nat_masquerade_ipv4 dm_crypt iptable_nat nf_nat_ipv4 xt_DSCP xt_dscp xt_mark iptable_mangle xt_limit xt_tcpudp xt_addrtype intel_rapl sb_edac x86_pkg_temp_thermal intel_powerclamp coretemp nf_conntrack_ipv4 nf_defrag_ipv4 kvm_intel xt_conntrack kvm joydev input_leds ipt_REJECT nf_reject_ipv4 ftdi_sio usbserial ipmi_si
[ 3117.882265] irqbypass intel_cstate mei_me mei ioatdma acpi_pad intel_rapl_perf shpchp ipmi_devintf ipmi_msghandler acpi_power_meter lpc_ich mac_hid ip6table_filter ip6_tables nf_conntrack_netbios_ns nf_conntrack_broadcast nf_nat_ftp nf_nat nf_conntrack_ftp sch_fq_codel nf_conntrack iptable_filter ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear mgag200 ttm crct10dif_pclmul igb ixgbe crc32_pclmul drm_kms_helper hid_generic ghash_clmulni_intel syscopyarea i2c_algo_bit dca sysfillrect usbhid pcbc sysimgblt fb_sys_fops aesni_intel aes_x86_64 crypto_simd ahci glue_helper ptp hid mxm_wmi cryptd
[ 3117.882309] drm libahci megaraid_sas pps_core mdio wmi
[ 3117.882315] CPU: 6 PID: 0 Comm: swapper/6 Tainted: G W 4.15.0-30-generic #32-Ubuntu
[ 3117.882316] Hardware name: Intel Corporation S2600WT2R/S2600WT2R, BIOS SE5C610.86B.01.01.0022.062820171903 06/28/2017
[ 3117.882319] RIP: 0010:nf_xfrm_me_harder+0x127/0x140 [nf_nat]
[ 3117.882320] RSP: 0018:ffff88d77f3839f0 EFLAGS: 00010246
[ 3117.882322] RAX: 0000000000000000 RBX: ffffffff90de4000 RCX: 0000000000001924
[ 3117.882323] RDX: 0000000000000000 RSI: ffff88d749ae6400 RDI: ffff88d655e96600
[ 3117.882324] RBP: ffff88d77f383a68 R08: ffff88d7493dc000 R09: 0000000000000018
[ 3117.882324] R10: 0000000000000001 R11: ffff88e770dedc00 R12: ffff88d655e96600
[ 3117.882325] R13: ffff88d77f383ae8 R14: ffff88d7799ff200 R15: ffff88d7493dc000
[ 3117.882327] FS: 0000000000000000(0000) GS:ffff88d77f380000(0000) knlGS:0000000000000000
[ 3117.882327] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3117.882328] CR2: ffffffffff600400 CR3: 000000193de0a002 CR4: 00000000003606e0
[ 3117.882329] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3117.882330] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3117.882331] Call Trace:
[ 3117.882332] <IRQ>
[ 3117.882337] ? nf_nat_ipv4_fn+0x15b/0x200 [nf_nat_ipv4]
[ 3117.882339] nf_nat_ipv4_out+0xc5/0xe0 [nf_nat_ipv4]
[ 3117.882342] iptable_nat_ipv4_out+0x15/0x20 [iptable_nat]
[ 3117.882347] nf_hook_slow+0x48/0xc0
[ 3117.882353] ip_output+0xd2/0xe0
[ 3117.882355] ? ip_fragment.constprop.44+0x80/0x80
[ 3117.882357] ip_forward_finish+0x49/0x70
[ 3117.882359] ip_forward+0x366/0x440
[ 3117.882361] ? ip_frag_mem+0x20/0x20
[ 3117.882362] ip_rcv_finish+0x129/0x430
[ 3117.882364] ip_rcv+0x28f/0x3a0
[ 3117.882366] ? inet_del_offload+0x40/0x40
[ 3117.882372] __netif_receive_skb_core+0x432/0xb40
[ 3117.882379] ? handle_edge_irq+0x7c/0x190
[ 3117.882384] ? irq_exit+0x67/0xc0
[ 3117.882391] ? do_IRQ+0x82/0xd0
[ 3117.882393] __netif_receive_skb+0x18/0x60
[ 3117.882395] ? __netif_receive_skb+0x18/0x60
[ 3117.882397] netif_receive_skb_internal+0x37/0xd0
[ 3117.882398] napi_gro_receive+0xc5/0xf0
[ 3117.882407] ixgbe_clean_rx_irq+0x446/0xe30 [ixgbe]
[ 3117.882411] ixgbe_poll+0x256/0x710 [ixgbe]
[ 3117.882413] ? do_IRQ+0x82/0xd0
[ 3117.882415] net_rx_action+0x140/0x3a0
[ 3117.882418] __do_softirq+0xdf/0x2b2
[ 3117.882419] irq_exit+0xb6/0xc0
[ 3117.882421] do_IRQ+0x82/0xd0
[ 3117.882423] common_interrupt+0x84/0x84
[ 3117.882424] </IRQ>
[ 3117.882427] RIP: 0010:cpuidle_enter_state+0xa7/0x2f0
[ 3117.882428] RSP: 0018:ffff9e1a46413e68 EFLAGS: 00000246 ORIG_RAX: ffffffffffffffda
[ 3117.882430] RAX: ffff88d77f3a2880 RBX: 000002d5f0422d24 RCX: 000000000000001f
[ 3117.882430] RDX: 000002d5f0422d24 RSI: fffa51c90e2bb456 RDI: 0000000000000000
[ 3117.882431] RBP: ffff9e1a46413ea8 R08: 000000000000003c R09: 0000000000000007
[ 3117.882432] R10: ffff9e1a46413e38 R11: 0000000000000036 R12: ffffbe0a3fb82240
[ 3117.882432] R13: 0000000000000001 R14: ffffffff90d71c98 R15: 0000000000000000
[ 3117.882435] ? cpuidle_enter_state+0x97/0x2f0
[ 3117.882436] cpuidle_enter+0x17/0x20
[ 3117.882439] call_cpuidle+0x23/0x40
[ 3117.882441] do_idle+0x18c/0x1f0
[ 3117.882443] cpu_startup_entry+0x73/0x80
[ 3117.882446] start_secondary+0x1ab/0x200
[ 3117.882449] secondary_startup_64+0xa5/0xb0
[ 3117.882450] Code: ff ff ff eb cc 48 83 e7 fe 48 89 45 88 e8 b2 bb c7 cf 48 8b 45 88 eb 90 85 c0 74 0f 8d 50 01 f0 0f b1 11 0f 84 53 ff ff ff eb ed <0f> 0b e9 4a ff ff ff e8 7d 1d 4b cf 0f 1f 00 66 2e 0f 1f 84 00
[ 3117.882475] ---[ end trace 034946ae5013518a ]---
[ 3117.882481] dst_release: dst:00000000444c06c4 refcnt:-1

# uname -a
Linux server 4.15.0-30-generic #32-Ubuntu SMP Thu Jul 26 17:42:43 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

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