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BUG: KMSAN: uninit-value in bond_neigh_setup+0xa4/0x110 drivers/net/bonding/bond_main.c:3745
CPU: 1 PID: 5319 Comm: udevd Not tainted 5.5.0-rc1-syzkaller #0
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+0x1c9/0x220 lib/dump_stack.c:118
 kmsan_report+0xf8/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x58/0xa0 mm/kmsan/kmsan_instr.c:215
 bond_neigh_setup+0xa4/0x110 drivers/net/bonding/bond_main.c:3745
 bond_neigh_init+0x216/0x4b0 drivers/net/bonding/bond_main.c:3716
 ___neigh_create+0x15f1/0x2e20 net/core/neighbour.c:613
 __neigh_create+0xbd/0xd0 net/core/neighbour.c:674
 ip6_finish_output2+0x149a/0x2670 net/ipv6/ip6_output.c:113
 __ip6_finish_output+0x83d/0x8f0 net/ipv6/ip6_output.c:142
 ip6_finish_output+0x2db/0x420 net/ipv6/ip6_output.c:152
 NF_HOOK_COND include/linux/netfilter.h:296 [inline]
 ip6_output+0x60a/0x770 net/ipv6/ip6_output.c:175
 dst_output include/net/dst.h:436 [inline]
 NF_HOOK include/linux/netfilter.h:307 [inline]
 mld_sendpack+0xebd/0x13d0 net/ipv6/mcast.c:1682
 mld_send_cr net/ipv6/mcast.c:1978 [inline]
 mld_ifc_timer_expire+0x1181/0x1790 net/ipv6/mcast.c:2477
 call_timer_fn+0x232/0x530 kernel/time/timer.c:1404
 expire_timers kernel/time/timer.c:1449 [inline]
 __run_timers+0xd60/0x1270 kernel/time/timer.c:1773
 run_timer_softirq+0x2d/0x50 kernel/time/timer.c:1786
 __do_softirq+0x4a1/0x83a kernel/softirq.c:293
 invoke_softirq kernel/softirq.c:375 [inline]
 irq_exit+0x230/0x280 kernel/softirq.c:416
 exiting_irq+0xe/0x10 arch/x86/include/asm/apic.h:536
 smp_apic_timer_interrupt+0x48/0x70 arch/x86/kernel/apic/apic.c:1140
 apic_timer_interrupt+0x2e/0x40 arch/x86/entry/entry_64.S:834
 </IRQ>
RIP: 0010:finish_lock_switch+0x2b/0x40 kernel/sched/core.c:3130
Code: 48 89 e5 53 48 89 fb e8 23 5b a1 00 8b b8 88 0c 00 00 48 8b 00 48 85 c0 75 12 48 89 df e8 ad 54 a1 00 c6 00 00 c6 03 00 fb 5b <5d> c3 e8 5e 5a a1 00 eb e7 66 90 66 2e 0f 1f 84 00 00 00 00 00 55
RSP: 0018:ffffb64a4204fae0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: ffff91fd5fd23cc0 RBX: ffff91fb6e4f0000 RCX: ffffe89545ef5470
RDX: ffff91fd5fc3ccc0 RSI: 0000000000000000 RDI: ffff91fc6fddbcc0
RBP: ffffb64a4204fae0 R08: ffffe8954000000f R09: ffff91fc6fffb000
R10: 0000000000000004 R11: 0000000000000000 R12: 0000000000000001
R13: ffff91fc65356550 R14: ffff91fc65355b80 R15: ffff91fc6fddbcc0
 finish_task_switch+0xfa/0x2d0 kernel/sched/core.c:3235
 context_switch kernel/sched/core.c:3399 [inline]
 __schedule+0x71f/0x7f0 kernel/sched/core.c:4098
 schedule+0x1eb/0x340 kernel/sched/core.c:4172
 schedule_hrtimeout_range_clock+0x2d5/0x9f0 kernel/time/hrtimer.c:2121
 schedule_hrtimeout_range+0x97/0xb0 kernel/time/hrtimer.c:2175
 ep_poll fs/eventpoll.c:1894 [inline]
 do_epoll_wait+0x15ca/0x1990 fs/eventpoll.c:2273
 __do_sys_epoll_wait fs/eventpoll.c:2283 [inline]
 __se_sys_epoll_wait+0xb3/0xe0 fs/eventpoll.c:2280
 __x64_sys_epoll_wait+0x56/0x70 fs/eventpoll.c:2280
 do_syscall_64+0xb6/0x160 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f458a59c943
Code: 00 31 d2 48 29 c2 64 89 11 48 83 c8 ff eb ea 90 90 90 90 90 90 90 90 83 3d b5 dc 2a 00 00 75 13 49 89 ca b8 e8 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 34 c3 48 83 ec 08 e8 3b c4 00 00 48 89 04 24
RSP: 002b:00007ffdd1425ba8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8
RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 00007f458a59c943
RDX: 0000000000000008 RSI: 00007ffdd1425ca0 RDI: 000000000000000a
RBP: 0000000000cc6cd0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000003
R13: 0000000000000000 R14: 0000000000cc6d40 R15: 0000000000cc1250

Local variable ----parms@bond_neigh_init created at:
 bond_neigh_init+0x8c/0x4b0 drivers/net/bonding/bond_main.c:3707
 bond_neigh_init+0x8c/0x4b0 drivers/net/bonding/bond_main.c:3707
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