BUG: unable to handle page fault for address: ffff887fa38ea7ff #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: 20899 Comm: syz-executor.0 Not tainted 5.6.0-rc1-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:4570 [inline] RIP: 0010:do_xdp_generic.part.0+0x499/0x18e0 net/core/dev.c:4668 Code: ff 48 c1 ea 03 48 89 85 e8 fe ff ff 4c 89 f8 4c 29 f0 48 89 45 80 48 b8 00 00 00 00 00 fc ff df 80 3c 02 00 0f 85 9c 11 00 00 <48> 8b 03 48 8d 7b 0c 48 ba 00 00 00 00 00 fc ff df 48 89 85 d8 fe RSP: 0018:ffffc90001ba7770 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff887fa38ea7ff RCX: 00000000ffff0101 RDX: 1ffff10ff471d4ff RSI: ffffffff863926b0 RDI: 0000000000000005 RBP: ffffc90001ba78b0 R08: ffff888094606040 R09: ffffed101471b55d R10: ffffed101471b55c R11: ffff8880a38daae3 R12: ffff8880a20eb200 R13: 0000000000000000 R14: 0000000000000100 R15: ffff8880a38da900 FS: 00007fda2cb31700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff887fa38ea7ff CR3: 0000000068e6a000 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:4663 tun_get_user+0x2bcd/0x4020 drivers/net/tun.c:1935 tun_chr_write_iter+0xbd/0x156 drivers/net/tun.c:2026 call_write_iter include/linux/fs.h:1901 [inline] do_iter_readv_writev+0x5f8/0x8f0 fs/read_write.c:693 do_iter_write fs/read_write.c:998 [inline] do_iter_write+0x184/0x610 fs/read_write.c:979 vfs_writev+0x1b3/0x2f0 fs/read_write.c:1071 do_writev+0x15b/0x330 fs/read_write.c:1114 __do_sys_writev fs/read_write.c:1187 [inline] __se_sys_writev fs/read_write.c:1184 [inline] __x64_sys_writev+0x75/0xb0 fs/read_write.c:1184 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45c571 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:00007fda2cb30ba0 EFLAGS: 00000293 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 0000000000000026 RCX: 000000000045c571 RDX: 0000000000000001 RSI: 00007fda2cb30c00 RDI: 00000000000000f0 RBP: 000000000076bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 00007fda2cb319d0 R11: 0000000000000293 R12: 00000000ffffffff R13: 0000000000000b81 R14: 00000000004cd93f R15: 000000000076bf2c Modules linked in: CR2: ffff887fa38ea7ff ---[ end trace dcf4050a1e8a7226 ]--- RIP: 0010:is_multicast_ether_addr_64bits include/linux/etherdevice.h:135 [inline] RIP: 0010:netif_receive_generic_xdp net/core/dev.c:4570 [inline] RIP: 0010:do_xdp_generic.part.0+0x499/0x18e0 net/core/dev.c:4668 Code: ff 48 c1 ea 03 48 89 85 e8 fe ff ff 4c 89 f8 4c 29 f0 48 89 45 80 48 b8 00 00 00 00 00 fc ff df 80 3c 02 00 0f 85 9c 11 00 00 <48> 8b 03 48 8d 7b 0c 48 ba 00 00 00 00 00 fc ff df 48 89 85 d8 fe RSP: 0018:ffffc90001ba7770 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff887fa38ea7ff RCX: 00000000ffff0101 RDX: 1ffff10ff471d4ff RSI: ffffffff863926b0 RDI: 0000000000000005 RBP: ffffc90001ba78b0 R08: ffff888094606040 R09: ffffed101471b55d R10: ffffed101471b55c R11: ffff8880a38daae3 R12: ffff8880a20eb200 R13: 0000000000000000 R14: 0000000000000100 R15: ffff8880a38da900 FS: 00007fda2cb31700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff887fa38ea7ff CR3: 0000000068e6a000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400