9pnet_virtio: no channels available for device (null)
==================================================================
BUG: KMSAN: uninit-value in ip_vs_lblc_check_expire+0xe62/0xf10 net/netfilter/ipvs/ip_vs_lblc.c:315
CPU: 0 PID: 17276 Comm: blkid Not tainted 4.17.0+ #22
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+0x188/0x2a0 mm/kmsan/kmsan.c:990
 __msan_warning_32+0x70/0xc0 mm/kmsan/kmsan_instr.c:640
 ip_vs_lblc_check_expire+0xe62/0xf10 net/netfilter/ipvs/ip_vs_lblc.c:315
 call_timer_fn+0x280/0x5d0 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0xd96/0x11b0 kernel/time/timer.c:1666
 run_timer_softirq+0x43/0x70 kernel/time/timer.c:1692
 __do_softirq+0x592/0x979 kernel/softirq.c:285
 invoke_softirq kernel/softirq.c:366 [inline]
 irq_exit+0x207/0x240 kernel/softirq.c:407
 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:868
 </IRQ>
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:32 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:73 [inline]
RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:114 [inline]
RIP: 0010:msan_get_shadow_origin_ptr+0x110/0x2e0 mm/kmsan/kmsan_instr.c:272
RSP: 0000:ffff88010af7fac0 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000202 RBX: ffffffff8b5ff000 RCX: 000000000000002e
RDX: 000062000cbfac7c RSI: 0000000000000001 RDI: ffffea000cbfac7c
RBP: ffff88010af7fb10 R08: 0000000001080001 R09: 0000000000000002
R10: 0000000000000000 R11: ffffffff818fe130 R12: 0000000000000004
R13: ffff88014172d7c0 R14: ffffffff8b5fe000 R15: ffffea000cbfac7c
 __msan_metadata_ptr_for_load_4+0x10/0x20 mm/kmsan/kmsan_instr.c:349
 __atomic_add_unless arch/x86/include/asm/atomic.h:267 [inline]
 atomic_add_unless include/linux/atomic.h:533 [inline]
 page_ref_add_unless include/linux/page_ref.h:157 [inline]
 get_page_unless_zero include/linux/mm.h:504 [inline]
 page_cache_get_speculative include/linux/pagemap.h:186 [inline]
 filemap_map_pages+0x525/0x1ac0 mm/filemap.c:2641
 do_fault_around mm/memory.c:3595 [inline]
 do_read_fault mm/memory.c:3629 [inline]
 do_fault mm/memory.c:3734 [inline]
 handle_pte_fault mm/memory.c:3965 [inline]
 __handle_mm_fault mm/memory.c:4089 [inline]
 handle_mm_fault+0x2f6b/0x7ed0 mm/memory.c:4126
 __do_page_fault+0xa8f/0x1830 arch/x86/mm/fault.c:1400
 do_page_fault+0x98/0xd0 arch/x86/mm/fault.c:1477
 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1169
RIP: 0033:0x7fc06efa49a0
RSP: 002b:00007ffdda67fda8 EFLAGS: 00010202
RAX: 00007ffdda67fdd0 RBX: 0000000000000003 RCX: 00007ffdda67fe98
RDX: 00007ffdda67fdb0 RSI: 00007fc06f2e4a50 RDI: 00007ffdda67ff22
RBP: 0000000000768040 R08: 00007ffdda67fe9c R09: 0000000000000000
R10: 0000000000000000 R11: 00007fc06ef91a30 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000003 R15: 0000000000000005

Uninit was created at:
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:256 [inline]
 kmsan_internal_alloc_meta_for_pages+0x146/0x700 mm/kmsan/kmsan.c:702
 kmsan_alloc_page+0x75/0xd0 mm/kmsan/kmsan_hooks.c:250
 __alloc_pages_nodemask+0xf7b/0x5cc0 mm/page_alloc.c:4404
 alloc_pages_current+0x6b1/0x970 mm/mempolicy.c:2093
 alloc_pages include/linux/gfp.h:494 [inline]
 kmalloc_order mm/slab_common.c:1148 [inline]
 kmalloc_order_trace+0xbb/0x390 mm/slab_common.c:1159
 kmalloc_large include/linux/slab.h:446 [inline]
 __kmalloc+0x335/0x350 mm/slub.c:3805
 kmalloc include/linux/slab.h:517 [inline]
 ip_vs_lblc_init_svc+0x57/0x310 net/netfilter/ipvs/ip_vs_lblc.c:355
 ip_vs_bind_scheduler+0xa9/0x1f0 net/netfilter/ipvs/ip_vs_sched.c:51
 ip_vs_add_service+0xa9d/0x1d90 net/netfilter/ipvs/ip_vs_ctl.c:1265
 do_ip_vs_set_ctl+0x2aa9/0x2cd0 net/netfilter/ipvs/ip_vs_ctl.c:2462
 nf_sockopt net/netfilter/nf_sockopt.c:106 [inline]
 nf_setsockopt+0x47c/0x4e0 net/netfilter/nf_sockopt.c:115
 ip_setsockopt+0x24b/0x2b0 net/ipv4/ip_sockglue.c:1251
 udp_setsockopt+0x108/0x1b0 net/ipv4/udp.c:2416
 ipv6_setsockopt+0x311/0x350 net/ipv6/ipv6_sockglue.c:917
 tcp_setsockopt+0x1c0/0x1f0 net/ipv4/tcp.c:2891
 sock_common_setsockopt+0x13b/0x170 net/core/sock.c:3039
 __sys_setsockopt+0x496/0x540 net/socket.c:1903
 __do_sys_setsockopt net/socket.c:1914 [inline]
 __se_sys_setsockopt net/socket.c:1911 [inline]
 __x64_sys_setsockopt+0x15c/0x1c0 net/socket.c:1911
 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
==================================================================