BUG: unable to handle page fault for address: ffff887fa2809fff
#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: 1 PID: 8946 Comm: syz-executor919 Not tainted 5.5.0-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+0x566/0x11d0 net/core/dev.c:4565
Code: 74 08 48 89 df e8 fa 3a 50 fb 4c 89 33 48 8b 9d 60 ff ff ff 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 3a 3a 50 fb <48> 8b 33 83 e6 01 31 ff 48 89 b5 f0 fe ff ff e8 f6 35 13 fb 48 89
RSP: 0018:ffffc90000e77958 EFLAGS: 00010246
RAX: 1ffff10ff45013ff RBX: ffff887fa2809fff RCX: 0000000000000100
RDX: ffff88809d6cb470 RSI: 0000000000000000 RDI: ffffc90000e77a88
RBP: ffffc90000e77a78 R08: ffffffff8663cee3 R09: ffffed10144ff45d
R10: ffffed10144ff45d R11: 0000000000000000 R12: ffff88809d6cb4c8
R13: ffff88809d6cb400 R14: ffff8880a27fa000 R15: dffffc0000000000
FS:  0000000002065880(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff887fa2809fff CR3: 000000008cf00000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 do_xdp_generic+0x39/0x110 net/core/dev.c:4663
 tun_get_user+0x1d9d/0x3790 drivers/net/tun.c:1935
 tun_chr_write_iter+0xac/0x130 drivers/net/tun.c:2026
 do_iter_readv_writev+0x651/0x8e0 include/linux/fs.h:1896
 do_iter_write+0x180/0x590 fs/read_write.c:970
 vfs_writev fs/read_write.c:1015 [inline]
 do_writev+0x239/0x490 fs/read_write.c:1058
 __do_sys_writev fs/read_write.c:1131 [inline]
 __se_sys_writev fs/read_write.c:1128 [inline]
 __x64_sys_writev+0x7d/0x90 fs/read_write.c:1128
 do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x441f50
Code: 05 48 3d 01 f0 ff ff 0f 83 5d 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 83 3d c1 90 29 00 00 75 14 b8 14 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 34 09 fc ff c3 48 83 ec 08 e8 ba 2b 00 00
RSP: 002b:00007ffcfb97f858 EFLAGS: 00000246 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 00007ffcfb97f870 RCX: 0000000000441f50
RDX: 0000000000000001 RSI: 00007ffcfb97f8a0 RDI: 00000000000000f0
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000004
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000001109b
R13: 0000000000402da0 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
CR2: ffff887fa2809fff
---[ end trace a5490c9adf7efeff ]---
RIP: 0010:is_multicast_ether_addr_64bits include/linux/etherdevice.h:135 [inline]
RIP: 0010:netif_receive_generic_xdp+0x566/0x11d0 net/core/dev.c:4565
Code: 74 08 48 89 df e8 fa 3a 50 fb 4c 89 33 48 8b 9d 60 ff ff ff 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 3a 3a 50 fb <48> 8b 33 83 e6 01 31 ff 48 89 b5 f0 fe ff ff e8 f6 35 13 fb 48 89
RSP: 0018:ffffc90000e77958 EFLAGS: 00010246
RAX: 1ffff10ff45013ff RBX: ffff887fa2809fff RCX: 0000000000000100
RDX: ffff88809d6cb470 RSI: 0000000000000000 RDI: ffffc90000e77a88
RBP: ffffc90000e77a78 R08: ffffffff8663cee3 R09: ffffed10144ff45d
R10: ffffed10144ff45d R11: 0000000000000000 R12: ffff88809d6cb4c8
R13: ffff88809d6cb400 R14: ffff8880a27fa000 R15: dffffc0000000000
FS:  0000000002065880(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff887fa2809fff CR3: 000000008cf00000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400