A link change request failed with some changes committed already. Interface lo may have been left with an inconsistent configuration, please check. BUG: unable to handle page fault for address: ffff887f947ac7ff #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: 10633 Comm: syz-executor896 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:ffffc900018f7770 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff88809479c800 RCX: ffffffff0000feff RDX: 1ffff10ff28f58ff RSI: ffff888095103730 RDI: 0000000000000005 RBP: ffffc900018f78b0 R08: ffff888096ce2100 R09: ffffed10128f395d R10: ffffed10128f395c R11: ffff88809479cae3 R12: ffff887f947ac7ff R13: 0000000000000100 R14: ffff8880947ac7ff R15: ffff8880951036c0 FS: 00007f0307a67700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff887f947ac7ff CR3: 0000000093911000 CR4: 00000000001406e0 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: 0033:0x44dbe1 Code: 75 14 b8 14 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 b4 ca fb ff c3 48 83 ec 08 e8 3a 2c 00 00 48 89 04 24 b8 14 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 83 2c 00 00 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007f0307a66c70 EFLAGS: 00000293 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 00000000006e0c68 RCX: 000000000044dbe1 RDX: 0000000000000001 RSI: 00007f0307a66c80 RDI: 00000000000000f0 RBP: 00000000006e0c60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 00000000006e0c6c R13: 00007ffe257e5f9f R14: 00007f0307a679c0 R15: 20c49ba5e353f7cf Modules linked in: CR2: ffff887f947ac7ff ---[ end trace 1c25dac2df4d71dd ]--- 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:ffffc900018f7770 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff88809479c800 RCX: ffffffff0000feff RDX: 1ffff10ff28f58ff RSI: ffff888095103730 RDI: 0000000000000005 RBP: ffffc900018f78b0 R08: ffff888096ce2100 R09: ffffed10128f395d R10: ffffed10128f395c R11: ffff88809479cae3 R12: ffff887f947ac7ff R13: 0000000000000100 R14: ffff8880947ac7ff R15: ffff8880951036c0 FS: 00007f0307a67700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff887f947ac7ff CR3: 0000000093911000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400