list_add corruption. next->prev should be prev (0000000001fccb4d), but was 00000000c794eda1. (next=000000002790ae59).
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:25!
invalid opcode: 0000 [#1] SMP PTI
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 2255 Comm: udevd Not tainted 4.16.0+ #87
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__list_add_valid+0x275/0x450 lib/list_debug.c:23
RSP: 0000:ffff8801cc32ef80 EFLAGS: 00010086
RAX: 0000000000000075 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88021fd30418
RBP: ffff8801cc32efe8 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000000 R12: ffffea000ac425e0
R13: ffffea000b080be0 R14: 0000000000000000 R15: ffffffff8b314000
FS:  0000000000000000(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000008 CR3: 000000000aa30000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __list_add include/linux/list.h:60 [inline]
 list_add include/linux/list.h:79 [inline]
 __free_one_page+0x1483/0x1800 mm/page_alloc.c:915
 free_pcppages_bulk+0x785/0xe60 mm/page_alloc.c:1168
 free_unref_page_commit+0x36a/0x530 mm/page_alloc.c:2678
 free_unref_page mm/page_alloc.c:2695 [inline]
 __free_pages+0x1b9/0x240 mm/page_alloc.c:4321
 kmsan_free_page+0x197/0x2e0 mm/kmsan/kmsan.c:938
 free_pages_prepare mm/page_alloc.c:1035 [inline]
 free_pcp_prepare mm/page_alloc.c:1099 [inline]
 free_unref_page_prepare+0x22f/0x620 mm/page_alloc.c:2641
 free_unref_page_list+0x27e/0x8b0 mm/page_alloc.c:2711
 release_pages+0x1657/0x1670 mm/swap.c:792
 free_pages_and_swap_cache+0x55b/0x580 mm/swap_state.c:322
 tlb_flush_mmu_free mm/memory.c:259 [inline]
 tlb_flush_mmu mm/memory.c:268 [inline]
 arch_tlb_finish_mmu mm/memory.c:283 [inline]
 tlb_finish_mmu+0x290/0x5c0 mm/memory.c:433
 exit_mmap+0x498/0x950 mm/mmap.c:3040
 __mmput+0x16c/0x610 kernel/fork.c:961
 mmput+0xab/0xf0 kernel/fork.c:982
 exit_mm+0x6ed/0x7a0 kernel/exit.c:545
 do_exit+0xc01/0x38d0 kernel/exit.c:854
 do_group_exit+0x1a0/0x360 kernel/exit.c:970
 get_signal+0x1320/0x1f20 kernel/signal.c:2469
 do_signal+0xb8/0x1c80 arch/x86/kernel/signal.c:809
 exit_to_usermode_loop arch/x86/entry/common.c:162 [inline]
 prepare_exit_to_usermode+0x271/0x3a0 arch/x86/entry/common.c:196
 retint_user+0x8/0x8
RIP: 0033:0x7f187aba9b10
RSP: 002b:00007ffcd06eff48 EFLAGS: 00010202
RAX: 0000000000000008 RBX: 00000000010c1070 RCX: 0000000000000030
RDX: 0000000000000008 RSI: 0000000000000000 RDI: 0000000000000009
RBP: 0000000000000009 R08: 00000000010c1800 R09: 0000000000000000
R10: 00000000010c1250 R11: 00007f187ac0dc81 R12: 00000000010c1090
R13: 00000000010c1070 R14: ffffffffffffffff R15: 00000000010c1250
Code: 87 80 0c 00 00 00 00 00 00 41 c7 87 20 03 00 00 00 00 00 00 48 c7 c7 68 f6 82 8a 31 c0 48 89 d6 4c 89 ea 4c 89 e1 e8 fb ac 51 fd <0f> 0b 66 0f 1f 84 00 00 00 00 00 eb fe 48 8b 7d c8 e8 c5 88 cb 
RIP: __list_add_valid+0x275/0x450 lib/list_debug.c:23 RSP: ffff8801cc32ef80
---[ end trace 88c8f4d5a68318f2 ]---