------------[ cut here ]------------
kernel BUG at net/core/net-sysfs.c:1631!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 12175 Comm: syz-executor.1 Not tainted 5.1.0-rc5+ #70
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:netdev_release net/core/net-sysfs.c:1631 [inline]
RIP: 0010:netdev_release+0x92/0xb0 net/core/net-sysfs.c:1627
Code: 48 c1 ea 03 80 3c 02 00 75 29 48 8b bb 80 fa ff ff e8 72 af 21 fc 4c 89 ef e8 9a c2 f5 ff 5b 41 5c 41 5d 5d c3 e8 4e da e9 fb <0f> 0b e8 97 e9 21 fc eb 9c e8 f0 e9 21 fc eb d0 0f 1f 40 00 66 2e
RSP: 0018:ffff888056117730 EFLAGS: 00010246
RAX: 0000000000040000 RBX: ffff88808cd6f3e0 RCX: ffffc90008014000
RDX: 0000000000040000 RSI: ffffffff8586b262 RDI: 0000000000000001
RBP: ffff888056117748 R08: ffff888093df03c0 R09: ffff888093df0c60
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff88808cd6ee40 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fadd0c4c700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000625208 CR3: 000000009f986000 CR4: 00000000001406f0
Call Trace:
 device_release+0x7d/0x210 drivers/base/core.c:1064
 kobject_cleanup lib/kobject.c:662 [inline]
 kobject_release lib/kobject.c:691 [inline]
 kref_put include/linux/kref.h:67 [inline]
 kobject_put.cold+0x28f/0x2ec lib/kobject.c:708
 put_device+0x20/0x30 drivers/base/core.c:2205
 netdev_register_kobject+0x1a1/0x3c0 net/core/net-sysfs.c:1763
 register_netdevice+0x878/0xff0 net/core/dev.c:8713
 ip6gre_tunnel_locate+0x531/0x800 net/ipv6/ip6_gre.c:385
 ip6gre_tunnel_ioctl+0x4f2/0xab0 net/ipv6/ip6_gre.c:1276
 dev_ifsioc+0x257/0x990 net/core/dev_ioctl.c:322
 dev_ioctl+0x1cc/0xe30 net/core/dev_ioctl.c:513
 sock_ioctl+0x48b/0x610 net/socket.c:1102
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:509 [inline]
 do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:696
 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713
 __do_sys_ioctl fs/ioctl.c:720 [inline]
 __se_sys_ioctl fs/ioctl.c:718 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458c29
Code: ad b8 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 b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fadd0c4bc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fadd0c4bc90 RCX: 0000000000458c29
RDX: 0000000020000180 RSI: 00000000000089f1 RDI: 0000000000000003
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fadd0c4c6d4
R13: 00000000004c42bc R14: 00000000004d7ad8 R15: 0000000000000004
Modules linked in:
---[ end trace 3090be9b64acfaa9 ]---
RIP: 0010:netdev_release net/core/net-sysfs.c:1631 [inline]
RIP: 0010:netdev_release+0x92/0xb0 net/core/net-sysfs.c:1627
Code: 48 c1 ea 03 80 3c 02 00 75 29 48 8b bb 80 fa ff ff e8 72 af 21 fc 4c 89 ef e8 9a c2 f5 ff 5b 41 5c 41 5d 5d c3 e8 4e da e9 fb <0f> 0b e8 97 e9 21 fc eb 9c e8 f0 e9 21 fc eb d0 0f 1f 40 00 66 2e
RSP: 0018:ffff888056117730 EFLAGS: 00010246
RAX: 0000000000040000 RBX: ffff88808cd6f3e0 RCX: ffffc90008014000
RDX: 0000000000040000 RSI: ffffffff8586b262 RDI: 0000000000000001
RBP: ffff888056117748 R08: ffff888093df03c0 R09: ffff888093df0c60
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff88808cd6ee40 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fadd0c4c700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3897990000 CR3: 000000009f986000 CR4: 00000000001406e0