[ 81.945709][ T27] audit: type=1800 audit(1581252019.184:27): pid=10580 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 81.978946][ T27] audit: type=1800 audit(1581252019.194:28): pid=10580 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. [ 82.894177][ T27] audit: type=1800 audit(1581252020.174:29): pid=10580 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 [ 82.915124][ T27] audit: type=1800 audit(1581252020.174:30): pid=10580 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 '10.128.10.8' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 91.699883][T10735] IPVS: ftp: loaded support on port[0] = 21 [ 91.754138][T10735] BUG: unable to handle page fault for address: ffff887f99f077ff [ 91.761903][T10735] #PF: supervisor read access in kernel mode [ 91.767890][T10735] #PF: error_code(0x0000) - not-present page [ 91.774286][T10735] PGD 0 P4D 0 [ 91.777668][T10735] Oops: 0000 [#1] PREEMPT SMP KASAN [ 91.782857][T10735] CPU: 0 PID: 10735 Comm: syz-executor817 Not tainted 5.5.0-syzkaller #0 [ 91.791387][T10735] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 91.801477][T10735] RIP: 0010:do_xdp_generic.part.0+0x479/0x17a0 [ 91.807635][T10735] 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 [ 91.827542][T10735] RSP: 0018:ffffc900067ef770 EFLAGS: 00010246 [ 91.833681][T10735] RAX: dffffc0000000000 RBX: ffff888099ef7800 RCX: ffffffff0000feff [ 91.841652][T10735] RDX: 1ffff10ff33e0eff RSI: ffff88809800daf0 RDI: 0000000000000005 [ 91.849754][T10735] RBP: ffffc900067ef8b0 R08: ffff88809b8de3c0 R09: ffffed10133def5d [ 91.857735][T10735] R10: ffffed10133def5c R11: ffff888099ef7ae3 R12: ffff887f99f077ff [ 91.865859][T10735] R13: 0000000000000100 R14: ffff888099f077ff R15: ffff88809800da80 [ 91.873843][T10735] FS: 0000000002521880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 91.882903][T10735] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 91.889497][T10735] CR2: ffff887f99f077ff CR3: 00000000912d6000 CR4: 00000000001406f0 [ 91.897657][T10735] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 91.905622][T10735] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 91.913591][T10735] Call Trace: [ 91.916934][T10735] ? generic_xdp_tx+0x740/0x740 [ 91.921798][T10735] ? rcu_read_lock_held+0x9c/0xb0 [ 91.926843][T10735] do_xdp_generic+0x30/0x50 [ 91.931490][T10735] tun_get_user+0x2bcd/0x4020 [ 91.936192][T10735] ? __kasan_check_read+0x11/0x20 [ 91.941225][T10735] ? aa_file_perm+0x617/0x1600 [ 91.946057][T10735] ? tun_build_skb.isra.0+0x1480/0x1480 [ 91.951621][T10735] ? rcu_read_lock_held+0x9c/0xb0 [ 91.956656][T10735] ? __kasan_check_read+0x11/0x20 [ 91.961691][T10735] tun_chr_write_iter+0xbd/0x156 [ 91.966920][T10735] do_iter_readv_writev+0x5f8/0x8f0 [ 91.972137][T10735] ? no_seek_end_llseek_size+0x70/0x70 [ 91.978652][T10735] ? apparmor_file_permission+0x27/0x30 [ 91.984323][T10735] ? rw_verify_area+0x126/0x360 [ 91.989287][T10735] do_iter_write+0x184/0x610 [ 91.993888][T10735] ? dup_iter+0x260/0x260 [ 91.998224][T10735] ? sendmsg_copy_msghdr+0x70/0x70 [ 92.003389][T10735] vfs_writev+0x1b3/0x2f0 [ 92.007711][T10735] ? vfs_iter_write+0xb0/0xb0 [ 92.012425][T10735] ? __do_sys_bpf+0x938/0x41e0 [ 92.017252][T10735] ? __fget_light+0x1ad/0x270 [ 92.022080][T10735] ? __fdget+0x1b/0x20 [ 92.026155][T10735] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 92.032441][T10735] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 92.038715][T10735] ? __fget_light+0x1ad/0x270 [ 92.043393][T10735] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 92.049803][T10735] do_writev+0x15b/0x330 [ 92.054079][T10735] ? vfs_writev+0x2f0/0x2f0 [ 92.058728][T10735] ? do_syscall_64+0x26/0x790 [ 92.063405][T10735] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 92.069514][T10735] ? do_syscall_64+0x26/0x790 [ 92.074417][T10735] __x64_sys_writev+0x75/0xb0 [ 92.079129][T10735] do_syscall_64+0xfa/0x790 [ 92.083635][T10735] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 92.089783][T10735] RIP: 0033:0x4416c0 [ 92.093724][T10735] 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 [ 92.113616][T10735] RSP: 002b:00007ffec00e4b68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 92.122029][T10735] RAX: ffffffffffffffda RBX: 00007ffec00e4b80 RCX: 00000000004416c0 [ 92.130240][T10735] RDX: 0000000000000001 RSI: 00007ffec00e4bb0 RDI: 00000000000000f0 [ 92.138319][T10735] RBP: 0000000000000003 R08: 00000000bb1414ac R09: 00000000bb1414ac [ 92.146312][T10735] R10: 00000000bb1414ac R11: 0000000000000246 R12: 0000000000000000 [ 92.154481][T10735] R13: 0000000000402ab0 R14: 0000000000000000 R15: 0000000000000000 [ 92.162556][T10735] Modules linked in: [ 92.166531][T10735] CR2: ffff887f99f077ff [ 92.170784][T10735] ---[ end trace a10e82c3779c6ead ]--- [ 92.176258][T10735] RIP: 0010:do_xdp_generic.part.0+0x479/0x17a0 [ 92.182410][T10735] 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 [ 92.202252][T10735] RSP: 0018:ffffc900067ef770 EFLAGS: 00010246 [ 92.208323][T10735] RAX: dffffc0000000000 RBX: ffff888099ef7800 RCX: ffffffff0000feff [ 92.216450][T10735] RDX: 1ffff10ff33e0eff RSI: ffff88809800daf0 RDI: 0000000000000005 [ 92.224426][T10735] RBP: ffffc900067ef8b0 R08: ffff88809b8de3c0 R09: ffffed10133def5d [ 92.232537][T10735] R10: ffffed10133def5c R11: ffff888099ef7ae3 R12: ffff887f99f077ff [ 92.240625][T10735] R13: 0000000000000100 R14: ffff888099f077ff R15: ffff88809800da80 [ 92.249490][T10735] FS: 0000000002521880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 92.258644][T10735] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 92.265330][T10735] CR2: ffff887f99f077ff CR3: 00000000912d6000 CR4: 00000000001406f0 [ 92.274129][T10735] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 92.282222][T10735] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 92.290333][T10735] Kernel panic - not syncing: Fatal exception in interrupt [ 92.299257][T10735] Kernel Offset: disabled [ 92.303609][T10735] Rebooting in 86400 seconds..