------------[ cut here ]------------
proc_dir_entry 'dev_snmp6/hsr1' already registered
WARNING: CPU: 0 PID: 8621 at fs/proc/generic.c:363 proc_register+0x2e6/0x480 fs/proc/generic.c:362
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 8621 Comm: syz-executor.2 Not tainted 5.6.0-rc3-syzkaller #0
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+0x128/0x182 lib/dump_stack.c:118
 panic+0x22a/0x4e3 kernel/panic.c:221
 __warn.cold.10+0x25/0x26 kernel/panic.c:582
 report_bug+0x1ad/0x270 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 do_error_trap+0x123/0x210 arch/x86/kernel/traps.c:267
 do_invalid_op+0x31/0x40 arch/x86/kernel/traps.c:286
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
RIP: 0010:proc_register+0x2e6/0x480 fs/proc/generic.c:362
Code: 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 8c 01 00 00 48 8b b5 d0 00 00 00 48 c7 c7 e0 bb 77 87 e8 b6 06 78 ff <0f> 0b 48 c7 c7 60 48 ca 88 e8 5c ae 58 05 4c 89 ea 48 b8 00 00 00
RSP: 0018:ffffc90004326d40 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffff8880a784e700 RCX: 0000000000000000
RDX: 0000000000000002 RSI: 0000000000000008 RDI: ffffffff8b6864a0
RBP: ffff88809eb99e00 R08: ffffed1015d06661 R09: ffffed1015d06661
R10: ffffed1015d06660 R11: ffff8880ae833307 R12: ffffed1014f09cfb
R13: ffff8880a784e78c R14: ffff8880a784e7d0 R15: ffff88808cdfc700
 proc_create_single_data+0xba/0x110 fs/proc/generic.c:622
 snmp6_register_dev+0xa7/0x130 net/ipv6/proc.c:254
 ipv6_add_dev+0x4b3/0xed0 net/ipv6/addrconf.c:406
 addrconf_notify+0x4d1/0x1ea0 net/ipv6/addrconf.c:3491
 notifier_call_chain+0x86/0x150 kernel/notifier.c:83
 call_netdevice_notifiers_extack net/core/dev.c:1960 [inline]
 call_netdevice_notifiers net/core/dev.c:1974 [inline]
 register_netdevice+0x60b/0xec0 net/core/dev.c:9400
 hsr_dev_finalize+0x4e0/0x6d2 net/hsr/hsr_device.c:486
 hsr_newlink+0x221/0x430 net/hsr/hsr_netlink.c:77
 __rtnl_newlink+0xbe9/0x1250 net/core/rtnetlink.c:3319
 rtnl_newlink+0x5c/0x80 net/core/rtnetlink.c:3377
 rtnetlink_rcv_msg+0x346/0x8c0 net/core/rtnetlink.c:5440
 netlink_rcv_skb+0x119/0x340 net/netlink/af_netlink.c:2478
 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline]
 netlink_unicast+0x434/0x630 net/netlink/af_netlink.c:1329
 netlink_sendmsg+0x714/0xc60 net/netlink/af_netlink.c:1918
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xac/0xe0 net/socket.c:672
 ____sys_sendmsg+0x54e/0x750 net/socket.c:2343
 ___sys_sendmsg+0xe4/0x160 net/socket.c:2397
 __sys_sendmsg+0xce/0x170 net/socket.c:2430
 do_syscall_64+0xc6/0x5e0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45c829
Code: 0d b7 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 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f33b6a99c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000500ce0 RCX: 000000000045c829
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000003
RBP: 000000000078c0e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000a04 R14: 00000000004ccbcc R15: 00007f33b6a9a6d4
Kernel Offset: disabled
Rebooting in 86400 seconds..