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BUG: KMSAN: uninit-value in __list_del_entry_valid+0x2da/0x440 lib/list_debug.c:51
CPU: 0 PID: 14499 Comm: syz-executor2 Not tainted 4.17.0+ #9
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:1125
 __msan_warning_32+0x70/0xc0 mm/kmsan/kmsan_instr.c:620
 __list_del_entry_valid+0x2da/0x440 lib/list_debug.c:51
 __list_del_entry include/linux/list.h:117 [inline]
 list_move include/linux/list.h:170 [inline]
 pick_next_task_fair+0x20d7/0x2530 kernel/sched/fair.c:6968
 pick_next_task+0x1ba/0x420 kernel/sched/core.c:3368
 __schedule+0x20f/0x770 kernel/sched/core.c:3498
 preempt_schedule_common kernel/sched/core.c:3648 [inline]
 _cond_resched+0x5e/0xd0 kernel/sched/core.c:4999
 prepare_alloc_pages mm/page_alloc.c:4324 [inline]
 __alloc_pages_nodemask+0x457/0x5cc0 mm/page_alloc.c:4365
 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_huge_pmd_anonymous_page mm/huge_memory.c:564 [inline]
 do_huge_pmd_anonymous_page+0xefa/0x2540 mm/huge_memory.c:728
 create_huge_pmd mm/memory.c:3856 [inline]
 __handle_mm_fault mm/memory.c:4060 [inline]
 handle_mm_fault+0x44ca/0x7ed0 mm/memory.c:4126
 __do_page_fault+0xec6/0x1a10 arch/x86/mm/fault.c:1400
 do_page_fault+0xb7/0x250 arch/x86/mm/fault.c:1477
 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1163
RIP: 0033:0x43cec9
RSP: 002b:0000000000a3e978 EFLAGS: 00010202
RAX: 0000000020296ff8 RBX: 0000000000000000 RCX: 0030656c69662f2e
RDX: 0000000000000008 RSI: 00000000007303b0 RDI: 0000000020296ff8
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000a3e940 R11: 0000000000000246 R12: 00000000000439b8
R13: 0000000000000002 R14: 000000000072c920 R15: 0000000000000001

Uninit was stored to memory at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:282 [inline]
 kmsan_save_stack mm/kmsan/kmsan.c:297 [inline]
 kmsan_internal_chain_origin+0x12b/0x210 mm/kmsan/kmsan.c:689
 __msan_chain_origin+0x69/0xc0 mm/kmsan/kmsan_instr.c:464
 __list_add include/linux/list.h:63 [inline]
 list_add include/linux/list.h:79 [inline]
 account_entity_enqueue kernel/sched/fair.c:2652 [inline]
 enqueue_entity kernel/sched/fair.c:4176 [inline]
 enqueue_task_fair+0x28c9/0x4490 kernel/sched/fair.c:5359
 enqueue_task kernel/sched/core.c:751 [inline]
 activate_task kernel/sched/core.c:770 [inline]
 ttwu_activate kernel/sched/core.c:1658 [inline]
 ttwu_do_activate kernel/sched/core.c:1717 [inline]
 ttwu_queue kernel/sched/core.c:1862 [inline]
 try_to_wake_up+0x162f/0x2260 kernel/sched/core.c:2075
 wake_up_process+0x34/0x40 kernel/sched/core.c:2148
 hrtimer_wakeup+0xac/0x100 kernel/time/hrtimer.c:1647
 __run_hrtimer kernel/time/hrtimer.c:1398 [inline]
 __hrtimer_run_queues+0xc54/0x1630 kernel/time/hrtimer.c:1460
 hrtimer_interrupt+0x451/0x13c0 kernel/time/hrtimer.c:1518
 local_apic_timer_interrupt+0x6b/0x250 arch/x86/kernel/apic/apic.c:1025
 smp_apic_timer_interrupt+0x5a/0x90 arch/x86/kernel/apic/apic.c:1053

Local variable description: ----t.i.i@__se_sys_nanosleep
Variable was created at:
 __se_sys_nanosleep+0x5f/0x6a0 kernel/time/hrtimer.c:1762
 __x64_sys_nanosleep+0x92/0xc0 kernel/time/hrtimer.c:1762
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