Warning: Permanently added '10.128.10.31' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 82.232980][ T9871] IPVS: ftp: loaded support on port[0] = 21 [ 82.281073][ T9871] BUG: unable to handle page fault for address: ffff887f927affff [ 82.288955][ T9871] #PF: supervisor read access in kernel mode [ 82.294917][ T9871] #PF: error_code(0x0000) - not-present page [ 82.301139][ T9871] PGD 0 P4D 0 [ 82.304501][ T9871] Oops: 0000 [#1] PREEMPT SMP KASAN [ 82.309751][ T9871] CPU: 0 PID: 9871 Comm: syz-executor878 Not tainted 5.6.0-rc1-syzkaller #0 [ 82.320492][ T9871] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 82.330547][ T9871] RIP: 0010:do_xdp_generic.part.0+0x479/0x17a0 [ 82.336690][ T9871] 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 ac 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 [ 82.356281][ T9871] RSP: 0018:ffffc90008217770 EFLAGS: 00010246 [ 82.362342][ T9871] RAX: dffffc0000000000 RBX: ffff8880927a0000 RCX: ffffffff0000feff [ 82.370375][ T9871] RDX: 1ffff10ff24f5fff RSI: ffff8880927f0230 RDI: 0000000000000005 [ 82.378830][ T9871] RBP: ffffc900082178b0 R08: ffff888093316200 R09: ffffed10124f405d [ 82.386801][ T9871] R10: ffffed10124f405c R11: ffff8880927a02e3 R12: ffff887f927affff [ 82.394934][ T9871] R13: 0000000000000100 R14: ffff8880927affff R15: ffff8880927f01c0 [ 82.402896][ T9871] FS: 00000000022a9880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 82.411919][ T9871] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 82.418521][ T9871] CR2: ffff887f927affff CR3: 0000000096671000 CR4: 00000000001406f0 [ 82.426482][ T9871] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 82.434458][ T9871] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 82.442703][ T9871] Call Trace: [ 82.445997][ T9871] ? generic_xdp_tx+0x740/0x740 [ 82.451193][ T9871] ? rcu_read_lock_held+0x9c/0xb0 [ 82.456217][ T9871] do_xdp_generic+0x30/0x50 [ 82.460720][ T9871] tun_get_user+0x2bcd/0x4020 [ 82.465417][ T9871] ? __kasan_check_read+0x11/0x20 [ 82.470432][ T9871] ? aa_file_perm+0x617/0x1600 [ 82.475190][ T9871] ? tun_build_skb.isra.0+0x1480/0x1480 [ 82.481606][ T9871] ? rcu_read_lock_held+0x9c/0xb0 [ 82.486703][ T9871] ? __kasan_check_read+0x11/0x20 [ 82.492224][ T9871] tun_chr_write_iter+0xbd/0x156 [ 82.497264][ T9871] do_iter_readv_writev+0x5f8/0x8f0 [ 82.502565][ T9871] ? no_seek_end_llseek_size+0x70/0x70 [ 82.508015][ T9871] ? apparmor_file_permission+0x27/0x30 [ 82.513566][ T9871] ? rw_verify_area+0x126/0x360 [ 82.518432][ T9871] do_iter_write+0x184/0x610 [ 82.523012][ T9871] ? dup_iter+0x260/0x260 [ 82.527330][ T9871] ? sendmsg_copy_msghdr+0x70/0x70 [ 82.532434][ T9871] vfs_writev+0x1b3/0x2f0 [ 82.536761][ T9871] ? vfs_iter_write+0xb0/0xb0 [ 82.541432][ T9871] ? __do_sys_bpf+0x938/0x41e0 [ 82.546189][ T9871] ? __fget_light+0x1ad/0x270 [ 82.550894][ T9871] ? __fdget+0x1b/0x20 [ 82.554951][ T9871] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 82.561270][ T9871] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 82.567500][ T9871] ? __fget_light+0x1ad/0x270 [ 82.572161][ T9871] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 82.578520][ T9871] do_writev+0x15b/0x330 [ 82.582754][ T9871] ? vfs_writev+0x2f0/0x2f0 [ 82.587249][ T9871] ? do_syscall_64+0x26/0x790 [ 82.591913][ T9871] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 82.597969][ T9871] ? do_syscall_64+0x26/0x790 [ 82.602635][ T9871] __x64_sys_writev+0x75/0xb0 [ 82.607304][ T9871] do_syscall_64+0xfa/0x790 [ 82.611799][ T9871] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 82.617686][ T9871] RIP: 0033:0x4416c0 [ 82.621598][ T9871] Code: 05 48 3d 01 f0 ff ff 0f 83 fd 0e fc ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 83 3d 51 99 29 00 00 75 14 b8 14 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 d4 0e fc ff c3 48 83 ec 08 e8 7a 2b 00 00 [ 82.641374][ T9871] RSP: 002b:00007ffd5d616308 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 82.649772][ T9871] RAX: ffffffffffffffda RBX: 00007ffd5d616320 RCX: 00000000004416c0 [ 82.657775][ T9871] RDX: 0000000000000001 RSI: 00007ffd5d616350 RDI: 00000000000000f0 [ 82.665732][ T9871] RBP: 0000000000000003 R08: 00000000bb1414ac R09: 00000000bb1414ac [ 82.673740][ T9871] R10: 00000000bb1414ac R11: 0000000000000246 R12: 0000000000000000 [ 82.681793][ T9871] R13: 0000000000402ab0 R14: 0000000000000000 R15: 0000000000000000 [ 82.689893][ T9871] Modules linked in: [ 82.693782][ T9871] CR2: ffff887f927affff [ 82.697927][ T9871] ---[ end trace 6270fb21d77867fc ]--- [ 82.703463][ T9871] RIP: 0010:do_xdp_generic.part.0+0x479/0x17a0 [ 82.709595][ T9871] 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 ac 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 [ 82.729181][ T9871] RSP: 0018:ffffc90008217770 EFLAGS: 00010246 [ 82.735235][ T9871] RAX: dffffc0000000000 RBX: ffff8880927a0000 RCX: ffffffff0000feff [ 82.743194][ T9871] RDX: 1ffff10ff24f5fff RSI: ffff8880927f0230 RDI: 0000000000000005 [ 82.751209][ T9871] RBP: ffffc900082178b0 R08: ffff888093316200 R09: ffffed10124f405d [ 82.760016][ T9871] R10: ffffed10124f405c R11: ffff8880927a02e3 R12: ffff887f927affff [ 82.767989][ T9871] R13: 0000000000000100 R14: ffff8880927affff R15: ffff8880927f01c0 [ 82.775948][ T9871] FS: 00000000022a9880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 82.784866][ T9871] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 82.791437][ T9871] CR2: ffff887f927affff CR3: 0000000096671000 CR4: 00000000001406f0 [ 82.799501][ T9871] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 82.807467][ T9871] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 82.815576][ T9871] Kernel panic - not syncing: Fatal exception in interrupt [ 82.824063][ T9871] Kernel Offset: disabled [ 82.828403][ T9871] Rebooting in 86400 seconds..