RDX: 0000000000000000 RSI: 0000000020b3dfc8 RDI: 0000000000000013
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000014
R13: 000000000000053d R14: 00000000006fbe58 R15: 000000000000001f
==================================================================
BUG: KMSAN: uninit-value in pcpu_addr_in_chunk mm/percpu.c:208 [inline]
BUG: KMSAN: uninit-value in pcpu_chunk_addr_search mm/percpu.c:1308 [inline]
BUG: KMSAN: uninit-value in free_percpu+0x2b8/0xb20 mm/percpu.c:1723
CPU: 1 PID: 9968 Comm: udevd Not tainted 4.17.0-rc3+ #88
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x185/0x1d0 lib/dump_stack.c:113
 kmsan_report+0x142/0x240 mm/kmsan/kmsan.c:1067
 __msan_warning_32+0x6c/0xb0 mm/kmsan/kmsan_instr.c:683
 pcpu_addr_in_chunk mm/percpu.c:208 [inline]
 pcpu_chunk_addr_search mm/percpu.c:1308 [inline]
 free_percpu+0x2b8/0xb20 mm/percpu.c:1723
 ip6_dst_destroy+0x157/0x750 net/ipv6/route.c:398
 dst_destroy+0x209/0x7a0 net/core/dst.c:131
 dst_destroy_rcu+0x46/0x50 net/core/dst.c:153
 __rcu_reclaim kernel/rcu/rcu.h:178 [inline]
 rcu_do_batch kernel/rcu/tree.c:2675 [inline]
 invoke_rcu_callbacks kernel/rcu/tree.c:2930 [inline]
 __rcu_process_callbacks kernel/rcu/tree.c:2897 [inline]
 rcu_process_callbacks+0x1729/0x2020 kernel/rcu/tree.c:2914
 __do_softirq+0x56d/0x93d kernel/softirq.c:285
 invoke_softirq kernel/softirq.c:365 [inline]
 irq_exit+0x202/0x240 kernel/softirq.c:405
 exiting_irq+0xe/0x10 arch/x86/include/asm/apic.h:525
 smp_apic_timer_interrupt+0x64/0x90 arch/x86/kernel/apic/apic.c:1055
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:863
 </IRQ>
RIP: 0010:my_virt_addr_valid mm/kmsan/kmsan_instr.c:122 [inline]
RIP: 0010:msan_get_shadow_origin_ptr+0x96/0x230 mm/kmsan/kmsan_instr.c:256
RSP: 0018:ffff8801a753f280 EFLAGS: 00000287 ORIG_RAX: ffffffffffffff13
RAX: ffffea008cbd08c0 RBX: ffffffff8b588000 RCX: ffff880000000000
RDX: 0000780000000000 RSI: 0000000000000008 RDI: ffffea000cbd08c0
RBP: ffff8801a753f2b0 R08: 0000000000000000 R09: 0000000000000002
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffffea000cbd08a0 R14: ffffffff8b587000 R15: ffffea000cbd08c0
 __msan_metadata_ptr_for_load_8+0x10/0x20 mm/kmsan/kmsan_instr.c:321
 compound_head include/linux/page-flags.h:142 [inline]
 PageAnon include/linux/page-flags.h:413 [inline]
 zap_pte_range mm/memory.c:1327 [inline]
 zap_pmd_range mm/memory.c:1441 [inline]
 zap_pud_range mm/memory.c:1470 [inline]
 zap_p4d_range mm/memory.c:1491 [inline]
 unmap_page_range+0x1b0c/0x3be0 mm/memory.c:1512
 unmap_single_vma+0x45b/0x5f0 mm/memory.c:1557
 unmap_vmas+0x1f4/0x360 mm/memory.c:1587
 exit_mmap+0x3da/0x950 mm/mmap.c:3047
 __mmput+0x16c/0x610 kernel/fork.c:962
 mmput+0xab/0xf0 kernel/fork.c:983
 exec_mmap fs/exec.c:1044 [inline]
 flush_old_exec+0x1adb/0x2170 fs/exec.c:1276
 load_elf_binary+0x134a/0x8f70 fs/binfmt_elf.c:869
 search_binary_handler+0x2ef/0xac0 fs/exec.c:1653
 exec_binprm fs/exec.c:1695 [inline]
 do_execveat_common+0x22e4/0x2da0 fs/exec.c:1817
 do_execve fs/exec.c:1862 [inline]
 __do_sys_execve fs/exec.c:1943 [inline]
 __se_sys_execve fs/exec.c:1938 [inline]
 __x64_sys_execve+0x127/0x180 fs/exec.c:1938
 do_syscall_64+0x154/0x220 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f62621a1207
RSP: 002b:00007ffc2ed71a58 EFLAGS: 00000202 ORIG_RAX: 000000000000003b
RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 00007f62621a1207
RDX: 0000000001843220 RSI: 00007ffc2ed71b50 RDI: 00007ffc2ed72b60
RBP: 0000000000625500 R08: 0000000000001198 R09: 0000000000001198
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000001843220
R13: 0000000000000007 R14: 0000000001832250 R15: 0000000000000005

Uninit was stored to memory at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:278 [inline]
 kmsan_save_stack mm/kmsan/kmsan.c:293 [inline]
 kmsan_internal_chain_origin+0x12b/0x210 mm/kmsan/kmsan.c:684
 __msan_chain_origin+0x69/0xc0 mm/kmsan/kmsan_instr.c:528
 ip6_dst_alloc net/ipv6/route.c:379 [inline]
 icmp6_dst_alloc+0x674/0xc60 net/ipv6/route.c:2456
 ndisc_send_skb+0x343/0x1360 net/ipv6/ndisc.c:471
 ndisc_send_rs+0xbc5/0xbf0 net/ipv6/ndisc.c:685
 addrconf_rs_timer+0x63e/0xc80 net/ipv6/addrconf.c:3794
 call_timer_fn+0x26a/0x5a0 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0xda7/0x11c0 kernel/time/timer.c:1666
 run_timer_softirq+0x43/0x70 kernel/time/timer.c:1692
 __do_softirq+0x56d/0x93d kernel/softirq.c:285
Local variable description: ----flags.i.i.i.i@_raw_spin_lock_irqsave
Variable was created at:
 _raw_spin_lock_irqsave+0x45/0xf0 kernel/locking/spinlock.c:150
 hrtimer_interrupt+0x107/0x13c0 kernel/time/hrtimer.c:1499
==================================================================