====================================== | [ 2.858195] 8021q: 802.1Q VLAN Support v1.8 | [ 3.272945] GACT probability NOT on | [ 3.274450] tc (381) used greatest stack depth: 11992 bytes left | [ 228.442738] Oops: general protection fault, probably for non-canonical address 0xdead000000000122: 0000 [#1] PREEMPT SMP NOPTI [ 228.442948] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 228.443054] RIP: 0010:neigh_flush_dev.isra.0 (./include/linux/list.h:988 ./include/linux/rculist.h:516 net/core/neighbour.c:384) [ 228.443113] Code: 89 d6 48 83 ed 10 0f 84 08 01 00 00 48 8b 5d 10 45 84 f6 74 0d 80 bd 9c 00 00 00 00 0f 88 e0 00 00 00 48 8b 45 00 48 8b 55 08 <48> 89 02 48 85 c0 74 04 48 89 50 08 48 8b 45 10 48 8b 55 18 4c 89 All code ======== 0: 89 d6 mov %edx,%esi 2: 48 83 ed 10 sub $0x10,%rbp 6: 0f 84 08 01 00 00 je 0x114 c: 48 8b 5d 10 mov 0x10(%rbp),%rbx 10: 45 84 f6 test %r14b,%r14b 13: 74 0d je 0x22 15: 80 bd 9c 00 00 00 00 cmpb $0x0,0x9c(%rbp) 1c: 0f 88 e0 00 00 00 js 0x102 22: 48 8b 45 00 mov 0x0(%rbp),%rax 26: 48 8b 55 08 mov 0x8(%rbp),%rdx 2a:* 48 89 02 mov %rax,(%rdx) <-- trapping instruction 2d: 48 85 c0 test %rax,%rax 30: 74 04 je 0x36 32: 48 89 50 08 mov %rdx,0x8(%rax) 36: 48 8b 45 10 mov 0x10(%rbp),%rax 3a: 48 8b 55 18 mov 0x18(%rbp),%rdx 3e: 4c rex.WR 3f: 89 .byte 0x89 Code starting with the faulting instruction =========================================== 0: 48 89 02 mov %rax,(%rdx) 3: 48 85 c0 test %rax,%rax 6: 74 04 je 0xc 8: 48 89 50 08 mov %rdx,0x8(%rax) c: 48 8b 45 10 mov 0x10(%rbp),%rax 10: 48 8b 55 18 mov 0x18(%rbp),%rdx 14: 4c rex.WR 15: 89 .byte 0x89 [ 228.443267] RSP: 0018:ffffb8440140b658 EFLAGS: 00010246 [ 228.443316] RAX: 0000000000000000 RBX: ffff96e482cda010 RCX: 0000000000001388 [ 228.443388] RDX: dead000000000122 RSI: 0000000000000286 RDI: ffff96e4bed9d070 [ 228.443462] RBP: ffff96e482cdbe00 R08: ffff96e482de0f3c R09: ffff96e4bed9cf40 [ 228.443534] R10: ffff96e4bed9cf58 R11: 00000000000000b3 R12: ffffffffbb02cbc0 [ 228.443605] R13: dead000000000122 R14: 0000000000000000 R15: ffff96e483d62a40 [ 228.443681] FS: 00007f9553b35800(0000) GS:ffff96e4bed80000(0000) knlGS:0000000000000000 [ 228.443762] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 228.443822] CR2: 00000000004e2ac8 CR3: 00000000012c4003 CR4: 0000000000772ef0 [ 228.443895] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 228.443968] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 228.444033] PKRU: 55555554 [ 228.444061] Call Trace: [ 228.444088] [ 228.444120] ? die_addr (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:460) [ 228.444163] ? exc_general_protection (arch/x86/kernel/traps.c:748 arch/x86/kernel/traps.c:693) [ 228.444213] ? asm_exc_general_protection (./arch/x86/include/asm/idtentry.h:617) [ 228.444268] ? neigh_flush_dev.isra.0 (./include/linux/list.h:988 ./include/linux/rculist.h:516 net/core/neighbour.c:384) [ 228.444319] ? neigh_flush_dev.isra.0 (net/core/neighbour.c:380) [ 228.444370] __neigh_ifdown.isra.0 (net/core/neighbour.c:425) [ 228.444421] neigh_ifdown (net/core/neighbour.c:445) [ 228.444461] addrconf_ifdown.isra.0 (./include/net/addrconf.h:330 net/ipv6/addrconf.c:3860) [ 228.444515] ? pneigh_queue_purge (./include/linux/skbuff.h:2138 ./include/linux/skbuff.h:2444 net/core/neighbour.c:365) [ 228.444563] addrconf_notify (net/ipv6/addrconf.c:3815) [ 228.444605] notifier_call_chain (kernel/notifier.c:93) [ 228.444647] __dev_notify_flags (net/core/dev.c:8994) [ 228.444687] dev_change_flags (net/core/dev.c:9029) [ 228.444722] do_setlink (net/core/rtnetlink.c:2975) [ 228.444763] ? __nla_validate_parse (./include/net/netlink.h:1267 (discriminator 1) lib/nlattr.c:622 (discriminator 1)) [ 228.444819] __rtnl_newlink (net/core/rtnetlink.c:3771) [ 228.444862] ? __kmalloc_cache_noprof (./include/linux/kernel.h:73 ./include/linux/sched/mm.h:321 mm/slub.c:4036 mm/slub.c:4114 mm/slub.c:4290) [ 228.444917] ? rtnl_newlink (net/core/rtnetlink.c:3815) [ 228.444958] rtnl_newlink (net/core/rtnetlink.c:3819) [ 228.444998] rtnetlink_rcv_msg (net/core/rtnetlink.c:6721) [ 228.445039] ? get_page_from_freelist (mm/page_alloc.c:1035 mm/page_alloc.c:1535 mm/page_alloc.c:1545 mm/page_alloc.c:3457) [ 228.445095] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6615) [ 228.445137] netlink_rcv_skb (net/netlink/af_netlink.c:2551) [ 228.445184] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) [ 228.445224] netlink_sendmsg (net/netlink/af_netlink.c:1901) [ 228.445263] ____sys_sendmsg (net/socket.c:729 net/socket.c:744 net/socket.c:2607) [ 228.445305] ? copy_msghdr_from_user (net/socket.c:2547) [ 228.445362] ___sys_sendmsg (net/socket.c:2663) [ 228.445404] ? do_wp_page (./include/linux/mmu_notifier.h:468 mm/memory.c:3460 mm/memory.c:3745) [ 228.445447] ? __pte_offset_map (./include/linux/pgtable.h:324 ./include/linux/pgtable.h:594 mm/pgtable-generic.c:289) [ 228.445487] ? __pte_offset_map (./include/linux/pgtable.h:324 ./include/linux/pgtable.h:594 mm/pgtable-generic.c:289) [ 228.445528] ? fsnotify_grab_connector (fs/notify/mark.c:696) [ 228.445583] ? fsnotify_destroy_marks (fs/notify/mark.c:923) [ 228.445633] __sys_sendmsg (./include/linux/file.h:35 net/socket.c:2692) [ 228.445673] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 228.445721] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 228.445772] RIP: 0033:0x7f9553d417b7 [ 228.445810] Code: 0a 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10 All code ======== 0: 0a 00 or (%rax),%al 2: f7 d8 neg %eax 4: 64 89 02 mov %eax,%fs:(%rdx) 7: 48 c7 c0 ff ff ff ff mov $0xffffffffffffffff,%rax e: eb b9 jmp 0xffffffffffffffc9 10: 0f 1f 00 nopl (%rax) 13: f3 0f 1e fa endbr64 17: 64 8b 04 25 18 00 00 mov %fs:0x18,%eax 1e: 00 1f: 85 c0 test %eax,%eax 21: 75 10 jne 0x33 23: b8 2e 00 00 00 mov $0x2e,%eax 28: 0f 05 syscall 2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction 30: 77 51 ja 0x83 32: c3 ret 33: 48 83 ec 28 sub $0x28,%rsp 37: 89 54 24 1c mov %edx,0x1c(%rsp) 3b: 48 89 74 24 10 mov %rsi,0x10(%rsp) Code starting with the faulting instruction =========================================== 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 6: 77 51 ja 0x59 8: c3 ret 9: 48 83 ec 28 sub $0x28,%rsp d: 89 54 24 1c mov %edx,0x1c(%rsp) 11: 48 89 74 24 10 mov %rsi,0x10(%rsp) [ 228.445969] RSP: 002b:00007ffdb8641f68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 228.446042] RAX: ffffffffffffffda RBX: 00007ffdb8642690 RCX: 00007f9553d417b7 [ 228.446112] RDX: 0000000000000000 RSI: 00007ffdb8641fd0 RDI: 0000000000000005 [ 228.446182] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078 [ 228.446252] R10: 00007f9553bffef8 R11: 0000000000000246 R12: 0000000000000003 Finger prints: neigh_ifdown:addrconf_notify:notifier_call_chain:__dev_notify_flags:dev_change_flags