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BUG: KMSAN: uninit-value in __rmqueue_pcplist mm/page_alloc.c:2964 [inline]
BUG: KMSAN: uninit-value in rmqueue_pcplist mm/page_alloc.c:2993 [inline]
BUG: KMSAN: uninit-value in rmqueue mm/page_alloc.c:3015 [inline]
BUG: KMSAN: uninit-value in get_page_from_freelist+0x5f24/0xb740 mm/page_alloc.c:3359
CPU: 0 PID: 6739 Comm: blkid Not tainted 4.17.0-rc5+ #1
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x185/0x1d0 lib/dump_stack.c:113
 kmsan_report+0x149/0x260 mm/kmsan/kmsan.c:1084
 __msan_warning_32+0x6e/0xc0 mm/kmsan/kmsan_instr.c:685
 __rmqueue_pcplist mm/page_alloc.c:2964 [inline]
 rmqueue_pcplist mm/page_alloc.c:2993 [inline]
 rmqueue mm/page_alloc.c:3015 [inline]
 get_page_from_freelist+0x5f24/0xb740 mm/page_alloc.c:3359
 __alloc_pages_nodemask+0x792/0x5cc0 mm/page_alloc.c:4371
 alloc_pages_current+0x6b1/0x970 mm/mempolicy.c:2093
 alloc_pages include/linux/gfp.h:494 [inline]
 pte_alloc_one+0x56/0x100 arch/x86/mm/pgtable.c:30
 do_fault_around mm/memory.c:3586 [inline]
 do_read_fault mm/memory.c:3627 [inline]
 do_fault mm/memory.c:3732 [inline]
 handle_pte_fault mm/memory.c:3963 [inline]
 __handle_mm_fault mm/memory.c:4087 [inline]
 handle_mm_fault+0x2e88/0x7ec0 mm/memory.c:4124
 __do_page_fault+0xec6/0x1a10 arch/x86/mm/fault.c:1400
 do_page_fault+0xd3/0x260 arch/x86/mm/fault.c:1477
 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1160
RIP: 0033:0x7fed7a632f84
RSP: 002b:00007ffdf95db040 EFLAGS: 00010206
RAX: 00007fed7a0762b8 RBX: 00007fed7a8489a8 RCX: 00007fed7a6401d7
RDX: 0000000000000000 RSI: 0000000000000010 RDI: 00007fed7a8489a8
RBP: 00007ffdf95db1b0 R08: 0000000070000029 R09: 000000006ffffdff
R10: 000000006ffffeff R11: 0000000000000206 R12: 00007ffdf95db298
R13: 000000006fffff48 R14: 00007ffdf95daf00 R15: 00007ffdf95daea0

Uninit was stored to memory at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:279 [inline]
 kmsan_save_stack mm/kmsan/kmsan.c:294 [inline]
 kmsan_internal_chain_origin+0x12b/0x210 mm/kmsan/kmsan.c:685
 __msan_chain_origin+0x69/0xc0 mm/kmsan/kmsan_instr.c:529
 __write_once_size include/linux/compiler.h:224 [inline]
 __list_add include/linux/list.h:66 [inline]
 list_add include/linux/list.h:79 [inline]
 free_unref_page_commit+0x4bc/0x4d0 mm/page_alloc.c:2796
 free_unref_page mm/page_alloc.c:2816 [inline]
 __free_pages mm/page_alloc.c:4440 [inline]
 free_pages+0x290/0x320 mm/page_alloc.c:4452
 arch_tlb_finish_mmu mm/memory.c:290 [inline]
 tlb_finish_mmu+0x3f7/0x5c0 mm/memory.c:433
 exit_mmap+0x539/0x980 mm/mmap.c:3107
 __mmput+0x158/0x600 kernel/fork.c:962
 mmput+0xab/0xf0 kernel/fork.c:983
 exit_mm+0x6ed/0x7a0 kernel/exit.c:545
 do_exit+0xc12/0x3930 kernel/exit.c:854
 do_group_exit+0x1a0/0x360 kernel/exit.c:970
 __do_sys_exit_group+0x21/0x30 kernel/exit.c:981
 __se_sys_exit_group+0x14/0x20 kernel/exit.c:979
 __x64_sys_exit_group+0x4c/0x50 kernel/exit.c:979
 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
Local variable description: ----tlb@exit_mmap
Variable was created at:
 exit_mmap+0x47/0x980 mm/mmap.c:3051
 __mmput+0x158/0x600 kernel/fork.c:962
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