BUG: unable to handle page fault for address: ffff887fa6072fff
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0 
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 2862 Comm: syz-executor.1 Not tainted 5.6.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:is_multicast_ether_addr_64bits include/linux/etherdevice.h:135 [inline]
RIP: 0010:netif_receive_generic_xdp net/core/dev.c:4554 [inline]
RIP: 0010:do_xdp_generic.part.0+0x45f/0x1780 net/core/dev.c:4652
Code: 4c 89 f8 4c 29 f0 4c 89 ac 24 b0 00 00 00 48 89 84 24 b8 00 00 00 48 b8 00 00 00 00 00 fc ff df 80 3c 02 00 0f 85 bd 10 00 00 <49> 8b 45 00 49 8d 7d 0c 48 ba 00 00 00 00 00 fc ff df 48 89 44 24
RSP: 0018:ffffc90001647968 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff8880a6072fff RCX: 00000000ffff0101
RDX: 1ffff10ff4c0e5ff RSI: ffffffff860e4910 RDI: 0000000000000005
RBP: ffff88808cd5ed00 R08: ffff88805c5ca5c0 R09: ffffed1014c0c65d
R10: ffffed1014c0c65c R11: ffff8880a60632e3 R12: ffffc90000ea2000
R13: ffff887fa6072fff R14: 0000000000000100 R15: ffff8880a6063100
FS:  00007f9344dd9700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff887fa6072fff CR3: 000000009caba000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 do_xdp_generic+0x2b/0x40 net/core/dev.c:4647
 tun_get_user+0x2917/0x3be0 drivers/net/tun.c:1935
 tun_chr_write_iter+0xb0/0x147 drivers/net/tun.c:2026
 call_write_iter include/linux/fs.h:1901 [inline]
 new_sync_write+0x49c/0x700 fs/read_write.c:483
 __vfs_write+0xc9/0x100 fs/read_write.c:496
 vfs_write+0x262/0x5c0 fs/read_write.c:558
 ksys_write+0x127/0x250 fs/read_write.c:611
 do_syscall_64+0xf6/0x790 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45c4a9
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:00007f9344dd8c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f9344dd96d4 RCX: 000000000045c4a9
RDX: 000000000000003b RSI: 0000000020000280 RDI: 0000000000000003
RBP: 000000000076bfc0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000d0b R14: 00000000004cefab R15: 000000000076bfcc
Modules linked in:
CR2: ffff887fa6072fff
---[ end trace a3b8a53104213903 ]---
RIP: 0010:is_multicast_ether_addr_64bits include/linux/etherdevice.h:135 [inline]
RIP: 0010:netif_receive_generic_xdp net/core/dev.c:4554 [inline]
RIP: 0010:do_xdp_generic.part.0+0x45f/0x1780 net/core/dev.c:4652
Code: 4c 89 f8 4c 29 f0 4c 89 ac 24 b0 00 00 00 48 89 84 24 b8 00 00 00 48 b8 00 00 00 00 00 fc ff df 80 3c 02 00 0f 85 bd 10 00 00 <49> 8b 45 00 49 8d 7d 0c 48 ba 00 00 00 00 00 fc ff df 48 89 44 24
RSP: 0018:ffffc90001647968 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff8880a6072fff RCX: 00000000ffff0101
RDX: 1ffff10ff4c0e5ff RSI: ffffffff860e4910 RDI: 0000000000000005
RBP: ffff88808cd5ed00 R08: ffff88805c5ca5c0 R09: ffffed1014c0c65d
R10: ffffed1014c0c65c R11: ffff8880a60632e3 R12: ffffc90000ea2000
R13: ffff887fa6072fff R14: 0000000000000100 R15: ffff8880a6063100
FS:  00007f9344dd9700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff887fa6072fff CR3: 000000009caba000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400