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BUG: KMSAN: uninit-value in bond_neigh_setup+0xa4/0x110 drivers/net/bonding/bond_main.c:3745
CPU: 0 PID: 23950 Comm: syz-executor.0 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_slab_free+0x8c/0xb0 mm/kmsan/kmsan_hooks.c:111
Code: 00 00 b9 03 00 00 00 e8 32 ea ff ff be ff ff ff ff 65 0f c1 35 a5 c8 17 54 ff ce 75 1a e8 9c 93 32 ff 4c 89 7d e0 ff 75 e0 9d <48> 83 c4 10 5b 41 5e 41 5f 5d c3 0f 0b 48 c7 c7 af 16 27 b9 31 c0
RSP: 0018:ffffa5e9c588f380 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 7ae3953250febf00 RBX: ffff9ffaef806e00 RCX: 0000000000000081
RDX: 0000000000000080 RSI: 0000000000000000 RDI: ffff9ffa0848a400
RBP: ffffa5e9c588f3a8 R08: ffffd1d64000000f R09: ffff9ffaefffb000
R10: 0000000000000014 R11: ffffffffab663cc0 R12: 0000000000000000
R13: ffff9ffa0848a400 R14: ffff9ffa0848a400 R15: 0000000000000246
 slab_free_freelist_hook mm/slub.c:1458 [inline]
 slab_free mm/slub.c:3021 [inline]
 kfree+0x8ce/0x3090 mm/slub.c:3974
 skb_free_head net/core/skbuff.c:591 [inline]
 skb_release_data+0x7de/0xa00 net/core/skbuff.c:611
 skb_release_all net/core/skbuff.c:665 [inline]
 __kfree_skb+0x90/0x240 net/core/skbuff.c:679
 kfree_skb+0x2d3/0x340 net/core/skbuff.c:697
 sctp_ulpevent_free+0x3de/0x4c0 net/sctp/ulpevent.c:1168
 sctp_queue_purge_ulpevents+0x141/0x220 net/sctp/ulpevent.c:1183
 sctp_ulpq_tail_event+0x57e/0xf60 net/sctp/ulpqueue.c:263
 do_ulpq_tail_event+0x169/0x200 net/sctp/stream_interleave.c:1305
 sctp_ulpevent_nofity_peer_addr_change+0xe9a/0xfe0 net/sctp/ulpevent.c:352
 sctp_assoc_set_primary net/sctp/associola.c:435 [inline]
 sctp_assoc_add_peer+0x1b0f/0x2120 net/sctp/associola.c:722
 sctp_connect_new_asoc+0x69a/0xc20 net/sctp/socket.c:1078
 __sctp_connect+0xb7d/0x1f20 net/sctp/socket.c:1176
 sctp_connect net/sctp/socket.c:4895 [inline]
 sctp_inet_connect+0x2dd/0x330 net/sctp/socket.c:4910
 __sys_connect_file net/socket.c:1844 [inline]
 __sys_connect+0x6f3/0x770 net/socket.c:1861
 __do_sys_connect net/socket.c:1872 [inline]
 __se_sys_connect+0x8d/0xb0 net/socket.c:1869
 __x64_sys_connect+0x4a/0x70 net/socket.c:1869
 do_syscall_64+0xb6/0x160 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45a919
Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f3bc6effc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a919
RDX: 000000000000001c RSI: 0000000020000080 RDI: 0000000000000004
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3bc6f006d4
R13: 00000000004c10ab R14: 00000000004d4e98 R15: 00000000ffffffff

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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