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BUG: KMSAN: uninit-value in __rmqueue_pcplist mm/page_alloc.c:2942 [inline]
BUG: KMSAN: uninit-value in rmqueue_pcplist mm/page_alloc.c:2971 [inline]
BUG: KMSAN: uninit-value in rmqueue mm/page_alloc.c:2993 [inline]
BUG: KMSAN: uninit-value in get_page_from_freelist+0x5f24/0xb740 mm/page_alloc.c:3352
CPU: 1 PID: 4533 Comm: syz-executor3 Not tainted 4.17.0+ #8
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+0x188/0x2a0 mm/kmsan/kmsan.c:1122
 __msan_warning_32+0x70/0xc0 mm/kmsan/kmsan_instr.c:620
 __rmqueue_pcplist mm/page_alloc.c:2942 [inline]
 rmqueue_pcplist mm/page_alloc.c:2971 [inline]
 rmqueue mm/page_alloc.c:2993 [inline]
 get_page_from_freelist+0x5f24/0xb740 mm/page_alloc.c:3352
 __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]
 __vmalloc_area_node mm/vmalloc.c:1699 [inline]
 __vmalloc_node_range+0x83c/0x1170 mm/vmalloc.c:1759
 __vmalloc_node mm/vmalloc.c:1804 [inline]
 __vmalloc_node_flags mm/vmalloc.c:1818 [inline]
 vzalloc+0xd8/0xf0 mm/vmalloc.c:1857
 alloc_counters+0x99/0x920 net/ipv6/netfilter/ip6_tables.c:819
 copy_entries_to_user net/ipv6/netfilter/ip6_tables.c:841 [inline]
 get_entries net/ipv6/netfilter/ip6_tables.c:1044 [inline]
 do_ip6t_get_ctl+0x843/0x1130 net/ipv6/netfilter/ip6_tables.c:1712
 nf_sockopt net/netfilter/nf_sockopt.c:104 [inline]
 nf_getsockopt+0x481/0x4e0 net/netfilter/nf_sockopt.c:122
 ipv6_getsockopt+0x25b/0x480 net/ipv6/ipv6_sockglue.c:1370
 tcp_getsockopt+0x1c6/0x1f0 net/ipv4/tcp.c:3349
 sock_common_getsockopt+0x13f/0x180 net/core/sock.c:2998
 __sys_getsockopt+0x48c/0x550 net/socket.c:1940
 __do_sys_getsockopt net/socket.c:1951 [inline]
 __se_sys_getsockopt net/socket.c:1948 [inline]
 __x64_sys_getsockopt+0x15d/0x1c0 net/socket.c:1948
 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45861a
RSP: 002b:0000000000a3e328 EFLAGS: 00000216 ORIG_RAX: 0000000000000037
RAX: ffffffffffffffda RBX: 0000000000a3e350 RCX: 000000000045861a
RDX: 0000000000000041 RSI: 0000000000000029 RDI: 0000000000000013
RBP: 0000000000704d60 R08: 0000000000a3e34c R09: 0000000000004000
R10: 0000000000a3e450 R11: 0000000000000216 R12: 0000000000000013
R13: 0000000000000000 R14: 0000000000000029 R15: 0000000000703260

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:686
 __msan_chain_origin+0x69/0xc0 mm/kmsan/kmsan_instr.c:464
 __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:2774
 free_unref_page mm/page_alloc.c:2794 [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:291 [inline]
 tlb_finish_mmu+0x3f7/0x5c0 mm/memory.c:434
 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
 get_signal+0x1405/0x1ec0 kernel/signal.c:2482
 do_signal+0xb8/0x1d20 arch/x86/kernel/signal.c:810
 exit_to_usermode_loop arch/x86/entry/common.c:162 [inline]
 prepare_exit_to_usermode+0x271/0x3a0 arch/x86/entry/common.c:196
 syscall_return_slowpath+0xe9/0x710 arch/x86/entry/common.c:265
 do_syscall_64+0x1ad/0x230 arch/x86/entry/common.c:290
 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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