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BUG: KMSAN: uninit-value in bond_neigh_setup+0xa4/0x110 drivers/net/bonding/bond_main.c:3745
CPU: 0 PID: 12160 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:kmsan_get_metadata+0x8/0x190 mm/kmsan/kmsan_shadow.c:180
Code: 19 e7 bb 48 c7 c6 68 19 e7 bb 4c 89 f2 31 c0 e8 60 50 4a ff 0f 0b 66 90 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 57 41 56 <53> 41 89 d6 48 89 fb 48 83 e3 fc 85 d2 48 0f 44 df 40 f6 c7 03 48
RSP: 0018:ffff9db301fef8d0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: ffff9b5a900100f4 RBX: ffff9b5a900100f4 RCX: ffffde27ca93eb80
RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff9b5b9d9580f4
RBP: ffff9db301fef8e0 R08: ffffde27c000000f R09: ffff9b5aafffb000
R10: 0000000000000003 R11: 0000000000000001 R12: ffff9b59eb192850
R13: ffff9b59eb192850 R14: ffff9b5b9d9580f4 R15: 0000000000000000
 kmsan_get_shadow_origin_ptr+0x81/0xb0 mm/kmsan/kmsan_shadow.c:159
 __msan_metadata_ptr_for_load_4+0x10/0x20 mm/kmsan/kmsan_instr.c:54
 security_inode_permission+0x66/0x210 security/security.c:1200
 inode_permission+0x1d8/0x790 fs/namei.c:457
 may_lookup fs/namei.c:1690 [inline]
 link_path_walk+0x248/0x2170 fs/namei.c:2071
 path_lookupat+0x169/0x1130 fs/namei.c:2304
 filename_lookup+0x328/0xbb0 fs/namei.c:2335
 user_path_at_empty+0x123/0x140 fs/namei.c:2615
 do_readlinkat+0x164/0x520 fs/stat.c:399
 __do_sys_readlink fs/stat.c:432 [inline]
 __se_sys_readlink+0x99/0xc0 fs/stat.c:429
 __x64_sys_readlink+0x4a/0x70 fs/stat.c:429
 do_syscall_64+0xb6/0x160 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f961c7ae577
Code: f0 ff ff 77 02 f3 c3 48 8b 15 bd 38 2b 00 f7 d8 64 89 02 83 c8 ff c3 90 90 90 90 90 90 90 90 90 90 90 90 b8 59 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 91 38 2b 00 31 d2 48 29 c2 64
RSP: 002b:00007fff12695e18 EFLAGS: 00000246 ORIG_RAX: 0000000000000059
RAX: ffffffffffffffda RBX: 0000000001e97250 RCX: 00007f961c7ae577
RDX: 0000000000000400 RSI: 00007fff12695e20 RDI: 00007fff12696300
RBP: 00007fff12696b40 R08: 00007fff12696b40 R09: 00007f961c802dc0
R10: 7665642f7379732f R11: 0000000000000246 R12: 00007fff12696300
R13: 0000000000000400 R14: 0000000001e97250 R15: 0000000001e9ce10

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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