BUG: unable to handle page fault for address: ffff887fa3393fff #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: 8710 Comm: syz-executor453 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+0x56c/0x11b0 net/core/dev.c:4515 Code: 74 08 48 89 df e8 04 41 60 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 44 40 60 fb <48> 8b 33 83 e6 01 31 ff 48 89 b5 f0 fe ff ff e8 80 00 24 fb 48 89 RSP: 0018:ffffc90000ef7958 EFLAGS: 00010246 RAX: 1ffff10ff46727ff RBX: ffff887fa3393fff RCX: 0000000000000100 RDX: ffff88809d819330 RSI: 0000000000000000 RDI: ffffc90000ef7a88 RBP: ffffc90000ef7a78 R08: ffffffff86527ef6 R09: ffffed101467085d R10: ffffed101467085d R11: 0000000000000000 R12: ffff88809d819388 R13: ffff88809d8192c0 R14: ffff8880a3384000 R15: dffffc0000000000 FS: 000000000206f880(0000) GS:ffff8880aec00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff887fa3393fff CR3: 0000000093920000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_xdp_generic+0x39/0x110 net/core/dev.c:4613 tun_get_user+0x1dfb/0x37b0 drivers/net/tun.c:1935 tun_chr_write_iter+0xac/0x130 drivers/net/tun.c:2022 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: 0033:0x442540 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 f1 8a 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:00007ffc069a5428 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 00007ffc069a5440 RCX: 0000000000442540 RDX: 0000000000000001 RSI: 00007ffc069a5470 RDI: 00000000000000f0 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000004 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000109e2 R13: 0000000000403390 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: CR2: ffff887fa3393fff ---[ end trace 78c0a8aecc5845e5 ]--- RIP: 0010:is_multicast_ether_addr_64bits include/linux/etherdevice.h:136 [inline] RIP: 0010:netif_receive_generic_xdp+0x56c/0x11b0 net/core/dev.c:4515 Code: 74 08 48 89 df e8 04 41 60 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 44 40 60 fb <48> 8b 33 83 e6 01 31 ff 48 89 b5 f0 fe ff ff e8 80 00 24 fb 48 89 RSP: 0018:ffffc90000ef7958 EFLAGS: 00010246 RAX: 1ffff10ff46727ff RBX: ffff887fa3393fff RCX: 0000000000000100 RDX: ffff88809d819330 RSI: 0000000000000000 RDI: ffffc90000ef7a88 RBP: ffffc90000ef7a78 R08: ffffffff86527ef6 R09: ffffed101467085d R10: ffffed101467085d R11: 0000000000000000 R12: ffff88809d819388 R13: ffff88809d8192c0 R14: ffff8880a3384000 R15: dffffc0000000000 FS: 000000000206f880(0000) GS:ffff8880aec00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff887fa3393fff CR3: 0000000093920000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400