Exception in xfrm_selector_match() on PowerPC64LE platform due to corrupt struct sock

Issue

System crashes with the following kernel messages on PowerPC64LE platform:

[237871.737455] Unable to handle kernel paging request for data at address 0x000000d4
[237871.737456] Faulting instruction address: 0xc0000000008a2d50
[237871.737458] Oops: Kernel access of bad area, sig: 11 [#1]
[237871.737460] SMP NR_CPUS=2048 NUMA pSeries
[237871.737485] Modules linked in: tcp_diag inet_diag iptable_filter bridge stp llc binfmt_misc team_mode_activebackup team nls_utf8 isofs loop ext4 mbcache jbd2 pseries_rng dm_service_time ses enclosure sg nfsd auth_rpcgss nfs_acl lockd grace sunrpc dm_multipath ip_tables xfs sr_mod sd_mod cdrom lpfc bnx2x ipr libata tg3 crc_t10dif crct10dif_generic scsi_transport_fc mdio ptp scsi_tgt pps_core crct10dif_common libcrc32c dm_mirror dm_region_hash dm_log dm_mod
[237871.737488] CPU: 54 PID: 0 Comm: swapper/54 Not tainted 3.10.0-327.el7.ppc64le #1
[237871.737490] task: c000003e56293900 ti: c000007c9fe00000 task.ti: c000003e56300000
[237871.737491] NIP: c0000000008a2d50 LR: c0000000008a4824 CTR: c000000000402310
[237871.737492] REGS: c000007c9fe03370 TRAP: 0300   Not tainted  (3.10.0-327.el7.ppc64le)
[237871.737497] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE>  CR: 24882082  XER: 00000000
[237871.737521] CFAR: c000000000009368 DAR: 00000000000000d4 DSISR: 40000000 SOFTE: 1
                GPR00: c0000000008a4824 c000007c9fe035f0 c000000001123130 00000000000000aa
                GPR04: c000007c9fe03660 000000000000000a c000007c9fe036a0 c000003de49d2400
                GPR08: c0000053d4fc28b8 0000000000000002 0000000000000300 cf9104feff94be9a
                GPR12: c000000000402310 c000000007b2e600 000000000000000a c000007c344f9a80
                GPR16: c000003e4528d200 0000000000000000 0000000000010000 0000000000020000
                GPR20: 0000000000000000 0000000000000000 000000000000dd86 000000000000003a
                GPR24: c00000000153f530 0000000000000000 c00000000110f800 000000000000000e
                GPR28: c000000001110c74 c000003e4a6bcf00 c000007c9fe03660 00000000000000aa
[237871.737527] NIP [c0000000008a2d50] xfrm_selector_match+0x80/0x5c0
[237871.737529] LR [c0000000008a4824] __xfrm_policy_check+0x454/0xfb0
[237871.737529] Call Trace:
[237871.737532] [c000007c9fe03640] [c0000000008a4824] __xfrm_policy_check+0x454/0xfb0
[237871.737536] [c000007c9fe037f0] [c0000000008f7df0] rawv6_rcv+0x50/0x440
[237871.737539] [c000007c9fe03830] [c0000000008f8338] raw6_local_deliver+0x158/0x330
[237871.737542] [c000007c9fe038c0] [c0000000008cb194] ip6_input_finish+0xe4/0x5b0
[237871.737544] [c000007c9fe03930] [c0000000008cbee0] ip6_mc_input+0x110/0x330
[237871.737549] [c000007c9fe039b0] [c0000000008cba24] ipv6_rcv+0x3c4/0x6b0
[237871.737553] [c000007c9fe03a40] [c0000000007b5914] __netif_receive_skb_core+0x7b4/0x9d0
[237871.737556] [c000007c9fe03b30] [c0000000007b69bc] netif_receive_skb+0x4c/0x110
[237871.737559] [c000007c9fe03b70] [c0000000007bb6e0] napi_gro_receive+0x130/0x4f0
[237871.737564] [c000007c9fe03bd0] [d0000000334dbab8] tg3_rx+0x458/0x9b0 [tg3]
[237871.737568] [c000007c9fe03cf0] [d0000000334e74f8] tg3_poll_work+0x348/0xa50 [tg3]
[237871.737574] [c000007c9fe03da0] [d0000000334e7d40] tg3_poll_msix+0x140/0x260 [tg3]
[237871.737576] [c000007c9fe03df0] [c0000000007baf38] net_rx_action+0x268/0x4e0
[237871.737580] [c000007c9fe03ea0] [c0000000000de734] __do_softirq+0x154/0x380
237871.737584] [c000007c9fe03f90] [c000000000024fb8] call_do_softirq+0x14/0x24
[237871.737587] [c000007c9fdffea0] [c000000000011760] do_softirq+0x120/0x170
[237871.737589] [c000007c9fdffee0] [c0000000000decb4] irq_exit+0x1e4/0x1f0
[237871.737593] [c000007c9fdfff20] [c000000000011354] __do_irq+0x94/0x190
[237871.737596] [c000007c9fdfff90] [c000000000024fdc] call_do_irq+0x14/0x24
[237871.737598] [c000003e563039e0] [c0000000000114e4] do_IRQ+0x94/0x110
[237871.737602] [c000003e56303a30] [c000000000002794] hardware_interrupt_common+0x114/0x180
[237871.737607] --- Exception: 501 at plpar_hcall_norets+0x8c/0xdc
                    LR = dedicated_cede_loop+0xf8/0x150
[237871.737610] [c000003e56303d20] [0000000000000000]           (null) (unreliable)
[237871.737613] [c000003e56303da0] [c00000000074d33c] cpuidle_idle_call+0x11c/0x3d0
[237871.737615] [c000003e56303e10] [c000000000096148] pseries_lpar_idle+0x18/0x60
[237871.737617] [c000003e56303e70] [c000000000018138] arch_cpu_idle+0x68/0x160
[237871.737619] [c000003e56303ea0] [c00000000015d670] cpu_startup_entry+0x290/0x300
[237871.737621] [c000003e56303f20] [c00000000004be00] start_secondary+0x310/0x340
[237871.737624] [c000003e56303f90] [c000000000009a6c] start_secondary_prolog+0x10/0x14
[237871.737625] Instruction dump:
[237871.737628] e8010010 eb41ffd0 eb61ffd8 eb81ffe0 7c0803a6 eba1ffe8 ebc1fff0 ebe1fff8
[237871.737631] 4e800020 60000000 60000000 60420000 <8923002a> 3b840014 7d252e70 553d06fe
[237871.737642] ---[ end trace df8d2ece62bdf058 ]---