BUG: unable to handle page fault for address: 000000010000201b
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0 
Oops: 0000 [#1] PREEMPT SMP
CPU: 1 PID: 30192 Comm: syz-executor.5 Not tainted 5.9.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:vxlan_offload_rx_ports+0xe3/0x1d0 drivers/net/vxlan.c:3262
Code: 00 ff 4c 89 f7 e8 bd 74 e2 00 44 89 e0 48 83 c0 02 4d 8b 7c c5 00 4d 85 ff 75 0f eb 3d e8 55 1c 8e 00 4d 8b 3f 4d 85 ff 74 30 <41> 8b 87 1c 20 00 00 49 8b 77 10 48 8b 7d d0 25 00 40 00 00 83 f8
RSP: 0018:ffffc9000224fc50 EFLAGS: 00010206
RAX: 0000000000000002 RBX: 0000000000000000 RCX: 00000000260a2b78
RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffff88810ec48810
RBP: ffffc9000224fc80 R08: 0000000000000001 R09: 0000000000000001
R10: ffff88810b5fc600 R11: 464058153e8aa3c1 R12: 0000000000000000
R13: ffff88810ec48000 R14: ffff88810ec48810 R15: 00000000ffffffff
FS:  0000000000000000(0000) GS:ffff88812c100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000010000201b CR3: 000000012ac70000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 vxlan_netdevice_event+0x23a/0x250 drivers/net/vxlan.c:4524
 notifier_call_chain+0x2f/0x90 kernel/notifier.c:83
 call_netdevice_notifiers_extack net/core/dev.c:2045 [inline]
 call_netdevice_notifiers net/core/dev.c:2059 [inline]
 rollback_registered_many+0x267/0x4e0 net/core/dev.c:9284
 rollback_registered+0x51/0x90 net/core/dev.c:9329
 unregister_netdevice_queue+0x6e/0xb0 net/core/dev.c:10410
 unregister_netdevice include/linux/netdevice.h:2774 [inline]
 __tun_detach+0x486/0x4f0 drivers/net/tun.c:691
 tun_detach drivers/net/tun.c:708 [inline]
 tun_chr_close+0x40/0xa0 drivers/net/tun.c:3408
 __fput+0xaa/0x250 fs/file_table.c:281
 task_work_run+0x68/0xb0 kernel/task_work.c:141
 exit_task_work include/linux/task_work.h:25 [inline]
 do_exit+0x3e1/0xcc0 kernel/exit.c:806
 do_group_exit+0x42/0xb0 kernel/exit.c:903
 __do_sys_exit_group kernel/exit.c:914 [inline]
 __se_sys_exit_group kernel/exit.c:912 [inline]
 __x64_sys_exit_group+0xf/0x10 kernel/exit.c:912
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45ce79
Code: Bad RIP value.
RSP: 002b:00007ffc286d5c98 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000045ce79
RDX: 00000000004168d1 RSI: 00000000016a85f0 RDI: 0000000000000043
RBP: 00000000004c2b1b R08: 000000000000000b R09: 0000000000000000
R10: 0000000002f63940 R11: 0000000000000246 R12: 000000000000000e
R13: 00007ffc286d5de0 R14: 000000000003964d R15: 00007ffc286d5df0
Modules linked in:
CR2: 000000010000201b
---[ end trace c5d7f8c9873c38b2 ]---
RIP: 0010:vxlan_offload_rx_ports+0xe3/0x1d0 drivers/net/vxlan.c:3262
Code: 00 ff 4c 89 f7 e8 bd 74 e2 00 44 89 e0 48 83 c0 02 4d 8b 7c c5 00 4d 85 ff 75 0f eb 3d e8 55 1c 8e 00 4d 8b 3f 4d 85 ff 74 30 <41> 8b 87 1c 20 00 00 49 8b 77 10 48 8b 7d d0 25 00 40 00 00 83 f8
RSP: 0018:ffffc9000224fc50 EFLAGS: 00010206
RAX: 0000000000000002 RBX: 0000000000000000 RCX: 00000000260a2b78
RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffff88810ec48810
RBP: ffffc9000224fc80 R08: 0000000000000001 R09: 0000000000000001
R10: ffff88810b5fc600 R11: 464058153e8aa3c1 R12: 0000000000000000
R13: ffff88810ec48000 R14: ffff88810ec48810 R15: 00000000ffffffff
FS:  0000000000000000(0000) GS:ffff88812c100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000010000201b CR3: 000000012ac70000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400