------------[ cut here ]------------ kernel BUG at net/core/net-sysfs.c:1631! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 21658 Comm: syz-executor.4 Not tainted 5.1.0-rc4+ #36 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 a2 7a 21 fc 4c 89 ef e8 2a c3 f5 ff 5b 41 5c 41 5d 5d c3 e8 4e ad e9 fb <0f> 0b e8 c7 b4 21 fc eb 9c e8 20 b5 21 fc eb d0 0f 1f 40 00 66 2e RSP: 0018:ffff8880610e79e8 EFLAGS: 00010246 RAX: 0000000000040000 RBX: ffff88806cb42060 RCX: ffffc9000e63f000 RDX: 0000000000040000 RSI: ffffffff8586e1b2 RDI: 0000000000000001 RBP: ffff8880610e7a00 R08: ffff8880a4410680 R09: ffff8880a4410f20 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88806cb41ac0 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f1bb8d4e700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffefacafbd0 CR3: 00000000a6222000 CR4: 00000000001406e0 DR0: 0000000020000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 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:8727 tun_set_iff drivers/net/tun.c:2843 [inline] __tun_chr_ioctl+0x21c9/0x3ee0 drivers/net/tun.c:3077 tun_chr_ioctl+0x2b/0x40 drivers/net/tun.c:3349 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: 0033:0x458da9 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:00007f1bb8d4dc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f1bb8d4dc90 RCX: 0000000000458da9 RDX: 0000000020000080 RSI: 00000000400454ca RDI: 0000000000000003 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1bb8d4e6d4 R13: 00000000004c341e R14: 00000000004d6860 R15: 0000000000000004 Modules linked in: ---[ end trace 10c572b8553debe8 ]--- 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 a2 7a 21 fc 4c 89 ef e8 2a c3 f5 ff 5b 41 5c 41 5d 5d c3 e8 4e ad e9 fb <0f> 0b e8 c7 b4 21 fc eb 9c e8 20 b5 21 fc eb d0 0f 1f 40 00 66 2e RSP: 0018:ffff8880610e79e8 EFLAGS: 00010246 RAX: 0000000000040000 RBX: ffff88806cb42060 RCX: ffffc9000e63f000 RDX: 0000000000040000 RSI: ffffffff8586e1b2 RDI: 0000000000000001 RBP: ffff8880610e7a00 R08: ffff8880a4410680 R09: ffff8880a4410f20 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88806cb41ac0 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f1bb8d4e700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f65a9c3edb8 CR3: 00000000a6222000 CR4: 00000000001406e0 DR0: 0000000020000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600