[ 103.568394][ T28] audit: type=1800 audit(1580732113.860:27): pid=10017 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 103.594532][ T28] audit: type=1800 audit(1580732113.870:28): pid=10017 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 104.789816][ T28] audit: type=1800 audit(1580732115.150:29): pid=10017 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 104.810109][ T28] audit: type=1800 audit(1580732115.150:30): pid=10017 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.72' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 114.667119][T10170] IPVS: ftp: loaded support on port[0] = 21 [ 114.720570][T10170] BUG: unable to handle page fault for address: ffff887f9a038fff [ 114.728637][T10170] #PF: supervisor read access in kernel mode [ 114.734660][T10170] #PF: error_code(0x0000) - not-present page [ 114.740744][T10170] PGD 0 P4D 0 [ 114.744156][T10170] Oops: 0000 [#1] PREEMPT SMP KASAN [ 114.749339][T10170] CPU: 0 PID: 10170 Comm: syz-executor913 Not tainted 5.5.0-syzkaller #0 [ 114.757814][T10170] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 114.767875][T10170] RIP: 0010:do_xdp_generic.part.0+0x479/0x17a0 [ 114.774010][T10170] 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 [ 114.793756][T10170] RSP: 0018:ffffc90001ce7770 EFLAGS: 00010246 [ 114.799866][T10170] RAX: dffffc0000000000 RBX: ffff88809a029000 RCX: ffffffff0000feff [ 114.808032][T10170] RDX: 1ffff10ff34071ff RSI: ffff88809a708c30 RDI: 0000000000000005 [ 114.816015][T10170] RBP: ffffc90001ce78b0 R08: ffff8880a76e81c0 R09: ffffed101340525d [ 114.823986][T10170] R10: ffffed101340525c R11: ffff88809a0292e3 R12: ffff887f9a038fff [ 114.831992][T10170] R13: 0000000000000100 R14: ffff88809a038fff R15: ffff88809a708bc0 [ 114.840136][T10170] FS: 0000000000fc4880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 114.849055][T10170] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 114.855628][T10170] CR2: ffff887f9a038fff CR3: 00000000a27b5000 CR4: 00000000001406f0 [ 114.863614][T10170] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 114.871606][T10170] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 114.879579][T10170] Call Trace: [ 114.882864][T10170] ? generic_xdp_tx+0x740/0x740 [ 114.887719][T10170] ? rcu_read_lock_held+0x9c/0xb0 [ 114.892791][T10170] do_xdp_generic+0x30/0x50 [ 114.897278][T10170] tun_get_user+0x2bcd/0x4020 [ 114.901939][T10170] ? __kasan_check_read+0x11/0x20 [ 114.907108][T10170] ? aa_file_perm+0x617/0x1600 [ 114.911864][T10170] ? tun_build_skb.isra.0+0x1480/0x1480 [ 114.917396][T10170] ? rcu_read_lock_held+0x9c/0xb0 [ 114.922430][T10170] ? __kasan_check_read+0x11/0x20 [ 114.928142][T10170] tun_chr_write_iter+0xbd/0x156 [ 114.933123][T10170] do_iter_readv_writev+0x5f8/0x8f0 [ 114.938430][T10170] ? no_seek_end_llseek_size+0x70/0x70 [ 114.943873][T10170] ? apparmor_file_permission+0x27/0x30 [ 114.949406][T10170] ? rw_verify_area+0x126/0x360 [ 114.955218][T10170] do_iter_write+0x184/0x610 [ 114.959794][T10170] ? dup_iter+0x260/0x260 [ 114.964431][T10170] ? sendmsg_copy_msghdr+0x70/0x70 [ 114.969546][T10170] vfs_writev+0x1b3/0x2f0 [ 114.973858][T10170] ? vfs_iter_write+0xb0/0xb0 [ 114.978573][T10170] ? __do_sys_bpf+0x938/0x41e0 [ 114.983336][T10170] ? __fget_light+0x1ad/0x270 [ 114.987998][T10170] ? __fdget+0x1b/0x20 [ 114.992069][T10170] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 114.998303][T10170] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 115.004539][T10170] ? __fget_light+0x1ad/0x270 [ 115.009206][T10170] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 115.015441][T10170] do_writev+0x15b/0x330 [ 115.019815][T10170] ? vfs_writev+0x2f0/0x2f0 [ 115.024365][T10170] ? do_syscall_64+0x26/0x790 [ 115.029080][T10170] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 115.035237][T10170] ? do_syscall_64+0x26/0x790 [ 115.039913][T10170] __x64_sys_writev+0x75/0xb0 [ 115.044751][T10170] do_syscall_64+0xfa/0x790 [ 115.049248][T10170] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 115.055123][T10170] RIP: 0033:0x441660 [ 115.059059][T10170] 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 b1 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 [ 115.078854][T10170] RSP: 002b:00007fff807c0b38 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 115.087392][T10170] RAX: ffffffffffffffda RBX: 00007fff807c0b50 RCX: 0000000000441660 [ 115.096446][T10170] RDX: 0000000000000001 RSI: 00007fff807c0b80 RDI: 00000000000000f0 [ 115.104452][T10170] RBP: 0000000000000003 R08: 00000000bb1414ac R09: 00000000bb1414ac [ 115.112462][T10170] R10: 00000000bb1414ac R11: 0000000000000246 R12: 0000000000000000 [ 115.120429][T10170] R13: 0000000000402a50 R14: 0000000000000000 R15: 0000000000000000 [ 115.128525][T10170] Modules linked in: [ 115.132405][T10170] CR2: ffff887f9a038fff [ 115.136549][T10170] ---[ end trace 1598b1ce82b24fe9 ]--- [ 115.142009][T10170] RIP: 0010:do_xdp_generic.part.0+0x479/0x17a0 [ 115.148151][T10170] 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 [ 115.167874][T10170] RSP: 0018:ffffc90001ce7770 EFLAGS: 00010246 [ 115.173986][T10170] RAX: dffffc0000000000 RBX: ffff88809a029000 RCX: ffffffff0000feff [ 115.182018][T10170] RDX: 1ffff10ff34071ff RSI: ffff88809a708c30 RDI: 0000000000000005 [ 115.189979][T10170] RBP: ffffc90001ce78b0 R08: ffff8880a76e81c0 R09: ffffed101340525d [ 115.197936][T10170] R10: ffffed101340525c R11: ffff88809a0292e3 R12: ffff887f9a038fff [ 115.205924][T10170] R13: 0000000000000100 R14: ffff88809a038fff R15: ffff88809a708bc0 [ 115.213928][T10170] FS: 0000000000fc4880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 115.222851][T10170] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 115.229424][T10170] CR2: ffff887f9a038fff CR3: 00000000a27b5000 CR4: 00000000001406f0 [ 115.237517][T10170] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 115.245486][T10170] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 115.253487][T10170] Kernel panic - not syncing: Fatal exception in interrupt [ 115.261444][T10170] Kernel Offset: disabled [ 115.265873][T10170] Rebooting in 86400 seconds..