BUG: unable to handle page fault for address: ffff887f978c1fff
#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: 10204 Comm: syz-executor.0 Not tainted 5.5.0-rc7-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:136 [inline]
RIP: 0010:netif_receive_generic_xdp net/core/dev.c:4515 [inline]
RIP: 0010:do_xdp_generic.part.0+0x479/0x1790 net/core/dev.c:4613
Code: 03 48 89 85 f0 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 a5 78 ff ff ff 80 3c 02 00 48 89 8d c8 fe ff ff 0f 85 9e 10 00 00 <49> 8b 04 24 49 8d 7c 24 0c 48 ba 00 00 00 00 00 fc ff df 48 89 85
RSP: 0018:ffffc90001077770 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff8880978b2000 RCX: ffffffff0000feff
RDX: 1ffff10ff2f183ff RSI: ffff8880a897f130 RDI: 0000000000000005
RBP: ffffc900010778b0 R08: ffff888091e62100 R09: ffffed1012f1645d
R10: ffffed1012f1645c R11: ffff8880978b22e3 R12: ffff887f978c1fff
R13: 0000000000000100 R14: ffff8880978c1fff R15: ffff8880a897f0c0
FS:  00007f7fe9964700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff887f978c1fff CR3: 0000000091393000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 do_xdp_generic+0x30/0x50 net/core/dev.c:4608
 tun_get_user+0x2bcd/0x3fc0 drivers/net/tun.c:1935
 tun_chr_write_iter+0xbd/0x156 drivers/net/tun.c:2022
 call_write_iter include/linux/fs.h:1902 [inline]
 do_iter_readv_writev+0x5f8/0x8f0 fs/read_write.c:693
 do_iter_write fs/read_write.c:970 [inline]
 do_iter_write+0x184/0x610 fs/read_write.c:951
 vfs_writev+0x1b3/0x2f0 fs/read_write.c:1015
 do_writev+0x15b/0x330 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+0x75/0xb0 fs/read_write.c:1128
 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45b201
Code: 75 14 b8 14 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 e4 b7 fb ff c3 48 83 ec 08 e8 fa 2c 00 00 48 89 04 24 b8 14 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 43 2d 00 00 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007f7fe9963ba0 EFLAGS: 00000293 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 000000000000005e RCX: 000000000045b201
RDX: 0000000000000001 RSI: 00007f7fe9963c00 RDI: 00000000000000f0
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000000000a8 R11: 0000000000000293 R12: 00000000ffffffff
R13: 0000000000000b4c R14: 00000000004cc318 R15: 000000000075bf2c
Modules linked in:
CR2: ffff887f978c1fff
---[ end trace dd0b362dc4b7e77b ]---
RIP: 0010:is_multicast_ether_addr_64bits include/linux/etherdevice.h:136 [inline]
RIP: 0010:netif_receive_generic_xdp net/core/dev.c:4515 [inline]
RIP: 0010:do_xdp_generic.part.0+0x479/0x1790 net/core/dev.c:4613
Code: 03 48 89 85 f0 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 a5 78 ff ff ff 80 3c 02 00 48 89 8d c8 fe ff ff 0f 85 9e 10 00 00 <49> 8b 04 24 49 8d 7c 24 0c 48 ba 00 00 00 00 00 fc ff df 48 89 85
RSP: 0018:ffffc90001077770 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff8880978b2000 RCX: ffffffff0000feff
RDX: 1ffff10ff2f183ff RSI: ffff8880a897f130 RDI: 0000000000000005
RBP: ffffc900010778b0 R08: ffff888091e62100 R09: ffffed1012f1645d
R10: ffffed1012f1645c R11: ffff8880978b22e3 R12: ffff887f978c1fff
R13: 0000000000000100 R14: ffff8880978c1fff R15: ffff8880a897f0c0
FS:  00007f7fe9964700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff887f978c1fff CR3: 0000000091393000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400