list_add corruption. prev->next should be next (ffffffff8a1dca60), but was ffff8881bb9bfd70. (prev=ffff8881cc704b70). ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:28! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 12092 Comm: blkid Not tainted 4.20.0-rc6-next-20181210+ #164 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__list_add_valid.cold.2+0x23/0x2a lib/list_debug.c:26 Code: e8 00 1f d2 fd 0f 0b 48 89 d9 48 c7 c7 20 e6 80 88 e8 ef 1e d2 fd 0f 0b 48 89 f1 48 c7 c7 a0 e6 80 88 48 89 de e8 db 1e d2 fd <0f> 0b 90 90 90 90 90 55 48 89 e5 41 57 41 56 49 be 00 00 00 00 00 RSP: 0000:ffff8881dac06ce0 EFLAGS: 00010286 RAX: 0000000000000075 RBX: ffffffff8a1dca60 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff816621c5 RDI: 0000000000000005 RBP: ffff8881dac06cf8 R08: ffff8881ae40e100 R09: ffffed103b585020 R10: ffffed103b585020 R11: ffff8881dac28107 R12: ffff88818d130730 R13: ffff88818d1304c0 R14: ffffffff8a1dc820 R15: ffffffff8a1dcab0 FS: 0000000000000000(0000) GS:ffff8881dac00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc954300d90 CR3: 00000001bb95c000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_add include/linux/list.h:60 [inline] list_add_tail include/linux/list.h:93 [inline] neigh_alloc net/core/neighbour.c:395 [inline] ___neigh_create+0x14b7/0x2600 net/core/neighbour.c:553 __neigh_create+0x30/0x40 net/core/neighbour.c:640 ip6_finish_output2+0xa64/0x2940 net/ipv6/ip6_output.c:117 ip6_finish_output+0x58c/0xc60 net/ipv6/ip6_output.c:154 NF_HOOK_COND include/linux/netfilter.h:278 [inline] ip6_output+0x232/0x9d0 net/ipv6/ip6_output.c:171 dst_output include/net/dst.h:444 [inline] NF_HOOK include/linux/netfilter.h:289 [inline] ndisc_send_skb+0x1005/0x1560 net/ipv6/ndisc.c:491 ndisc_send_rs+0x134/0x6e0 net/ipv6/ndisc.c:685 addrconf_rs_timer+0x314/0x690 net/ipv6/addrconf.c:3840 call_timer_fn+0x272/0x920 kernel/time/timer.c:1325 expire_timers kernel/time/timer.c:1362 [inline] __run_timers+0x7e5/0xc70 kernel/time/timer.c:1681 run_timer_softirq+0x52/0xb0 kernel/time/timer.c:1694 __do_softirq+0x308/0xb7e kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x17f/0x1c0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807 RIP: 0010:rcu_dynticks_curr_cpu_in_eqs+0x11d/0x170 kernel/rcu/tree.c:306 Code: ba 00 00 00 00 00 fc ff df 41 89 45 c0 d1 e8 83 f0 01 48 c7 04 13 00 00 00 00 83 e0 01 48 8b 75 d8 65 48 33 34 25 28 00 00 00 <75> 45 48 83 c4 68 5b 41 5c 41 5d 41 5e 5d c3 89 85 78 ff ff ff e8 RSP: 0000:ffff88818cbf6e90 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 1ffff1103197edd3 RCX: 1ffff1103197edd7 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffff88818cbf6eb8 RBP: ffff88818cbf6f18 R08: ffffed103b585b60 R09: ffffed103b585b5f R10: ffffed103b585b5f R11: ffff8881dac2dafb R12: ffff8881dac2da40 R13: ffff88818cbf6ef8 R14: ffff8881dac2daf8 R15: ffff8881bcc17f77 rcu_is_watching+0x10/0x30 kernel/rcu/tree.c:932 rcu_read_unlock include/linux/rcupdate.h:657 [inline] is_bpf_text_address+0xe9/0x170 kernel/bpf/core.c:669 kernel_text_address+0x79/0xf0 kernel/extable.c:152 __kernel_text_address+0xd/0x40 kernel/extable.c:107 unwind_get_return_address+0x61/0xa0 arch/x86/kernel/unwind_frame.c:18 __save_stack_trace+0x8d/0xf0 arch/x86/kernel/stacktrace.c:45 save_stack_trace+0x1a/0x20 arch/x86/kernel/stacktrace.c:60 save_stack+0x43/0xd0 mm/kasan/common.c:73 set_track mm/kasan/common.c:85 [inline] kasan_kmalloc+0xcb/0xd0 mm/kasan/common.c:482 kasan_slab_alloc+0x12/0x20 mm/kasan/common.c:397 slab_post_alloc_hook mm/slab.h:444 [inline] slab_alloc mm/slab.c:3379 [inline] kmem_cache_alloc+0x11a/0x730 mm/slab.c:3539 vm_area_alloc+0x7a/0x1d0 kernel/fork.c:327 mmap_region+0x9d7/0x1cd0 mm/mmap.c:1756 do_mmap+0xa22/0x1230 mm/mmap.c:1559 do_mmap_pgoff include/linux/mm.h:2422 [inline] vm_mmap_pgoff+0x213/0x2c0 mm/util.c:350 vm_mmap+0x90/0xc0 mm/util.c:369 elf_map+0x10b/0x2b0 fs/binfmt_elf.c:378 load_elf_binary+0xeed/0x5620 fs/binfmt_elf.c:1011 search_binary_handler+0x17d/0x570 fs/exec.c:1656 exec_binprm fs/exec.c:1698 [inline] __do_execve_file.isra.35+0x178c/0x2760 fs/exec.c:1818 do_execveat_common fs/exec.c:1865 [inline] do_execve fs/exec.c:1882 [inline] __do_sys_execve fs/exec.c:1963 [inline] __se_sys_execve fs/exec.c:1958 [inline] __x64_sys_execve+0x8f/0xc0 fs/exec.c:1958 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f3d4be17207 Code: Bad RIP value. RSP: 002b:00007ffd7ae6ad78 EFLAGS: 00000206 ORIG_RAX: 000000000000003b RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 00007f3d4be17207 RDX: 00000000020c6880 RSI: 00007ffd7ae6ae70 RDI: 00007ffd7ae6be80 RBP: 0000000000625500 R08: 0000000000002988 R09: 0000000000002988 R10: 0000000000000000 R11: 0000000000000206 R12: 00000000020c6880 R13: 0000000000000007 R14: 00000000020b6250 R15: 0000000000000005 Modules linked in: ---[ end trace 8a821701cd5561fe ]--- RIP: 0010:__list_add_valid.cold.2+0x23/0x2a lib/list_debug.c:26 Code: e8 00 1f d2 fd 0f 0b 48 89 d9 48 c7 c7 20 e6 80 88 e8 ef 1e d2 fd 0f 0b 48 89 f1 48 c7 c7 a0 e6 80 88 48 89 de e8 db 1e d2 fd <0f> 0b 90 90 90 90 90 55 48 89 e5 41 57 41 56 49 be 00 00 00 00 00 RSP: 0000:ffff8881dac06ce0 EFLAGS: 00010286 RAX: 0000000000000075 RBX: ffffffff8a1dca60 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff816621c5 RDI: 0000000000000005 RBP: ffff8881dac06cf8 R08: ffff8881ae40e100 R09: ffffed103b585020 R10: ffffed103b585020 R11: ffff8881dac28107 R12: ffff88818d130730 R13: ffff88818d1304c0 R14: ffffffff8a1dc820 R15: ffffffff8a1dcab0 FS: 0000000000000000(0000) GS:ffff8881dac00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3d4be171dd CR3: 00000001bb95c000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400