[ 94.277447][ T27] audit: type=1800 audit(1579580338.646:27): pid=9748 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 94.337568][ T27] audit: type=1800 audit(1579580338.646:28): pid=9748 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. [ 95.459588][ T27] audit: type=1800 audit(1579580339.886:29): pid=9748 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 [ 95.480642][ T27] audit: type=1800 audit(1579580339.886:30): pid=9748 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 '10.128.0.127' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 106.332971][ T9901] IPVS: ftp: loaded support on port[0] = 21 [ 106.384299][ T9903] netlink: 'syz-executor970': attribute type 1 has an invalid length. [ 106.392747][ T9903] A link change request failed with some changes committed already. Interface lo may have been left with an inconsistent configuration, please check. [ 106.489618][ T9905] netlink: 'syz-executor970': attribute type 1 has an invalid length. [ 106.498236][ T9905] netlink: 'syz-executor970': attribute type 1 has an invalid length. [ 106.506492][ T9905] netlink: 'syz-executor970': attribute type 1 has an invalid length. [ 106.514966][ T9905] netlink: 'syz-executor970': attribute type 1 has an invalid length. [ 106.523201][ T9905] netlink: 'syz-executor970': attribute type 1 has an invalid length. [ 106.531475][ T9905] netlink: 'syz-executor970': attribute type 1 has an invalid length. [ 106.540405][ T9905] netlink: 'syz-executor970': attribute type 1 has an invalid length. [ 106.548678][ T9905] netlink: 'syz-executor970': attribute type 1 has an invalid length. [ 106.556856][ T9905] netlink: 'syz-executor970': attribute type 1 has an invalid length. executing program [ 106.663108][ T9907] BUG: unable to handle page fault for address: ffff887fa01a4fff [ 106.671151][ T9907] #PF: supervisor read access in kernel mode [ 106.677119][ T9907] #PF: error_code(0x0000) - not-present page [ 106.683086][ T9907] PGD 0 P4D 0 [ 106.686473][ T9907] Oops: 0000 [#1] PREEMPT SMP KASAN [ 106.691830][ T9907] CPU: 0 PID: 9907 Comm: syz-executor970 Not tainted 5.5.0-rc7-syzkaller #0 [ 106.700595][ T9907] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 106.710672][ T9907] RIP: 0010:do_xdp_generic.part.0+0x479/0x1790 [ 106.710692][ T9907] 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 [ 106.738849][ T9907] RSP: 0018:ffffc90000f77770 EFLAGS: 00010246 [ 106.744933][ T9907] RAX: dffffc0000000000 RBX: ffff8880a0195000 RCX: ffffffff0000feff [ 106.752921][ T9907] RDX: 1ffff10ff40349ff RSI: ffff8880a862e8b0 RDI: 0000000000000005 [ 106.760889][ T9907] RBP: ffffc90000f778b0 R08: ffff888097fe6640 R09: ffffed1014032a5d [ 106.768861][ T9907] R10: ffffed1014032a5c R11: ffff8880a01952e3 R12: ffff887fa01a4fff [ 106.776846][ T9907] R13: 0000000000000100 R14: ffff8880a01a4fff R15: ffff8880a862e840 [ 106.784823][ T9907] FS: 00007f30fbd29700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 106.793879][ T9907] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 106.800467][ T9907] CR2: ffff887fa01a4fff CR3: 000000009118f000 CR4: 00000000001406f0 [ 106.808437][ T9907] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 106.816433][ T9907] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 106.824414][ T9907] Call Trace: [ 106.827714][ T9907] ? generic_xdp_tx+0x740/0x740 [ 106.832566][ T9907] ? rcu_read_lock_held+0x9c/0xb0 [ 106.837710][ T9907] do_xdp_generic+0x30/0x50 [ 106.842237][ T9907] tun_get_user+0x2bcd/0x3fc0 [ 106.846909][ T9907] ? __kasan_check_read+0x11/0x20 [ 106.851999][ T9907] ? aa_file_perm+0x617/0x1600 [ 106.856793][ T9907] ? tun_build_skb.isra.0+0x1470/0x1470 [ 106.862346][ T9907] ? rcu_read_lock_held+0x9c/0xb0 [ 106.867369][ T9907] ? __kasan_check_read+0x11/0x20 [ 106.872419][ T9907] tun_chr_write_iter+0xbd/0x156 [ 106.877367][ T9907] do_iter_readv_writev+0x5f8/0x8f0 [ 106.882569][ T9907] ? no_seek_end_llseek_size+0x70/0x70 [ 106.888036][ T9907] ? apparmor_file_permission+0x27/0x30 [ 106.893601][ T9907] ? rw_verify_area+0x126/0x360 [ 106.898474][ T9907] do_iter_write+0x184/0x610 [ 106.903081][ T9907] ? dup_iter+0x260/0x260 [ 106.907425][ T9907] vfs_writev+0x1b3/0x2f0 [ 106.911908][ T9907] ? vfs_iter_write+0xb0/0xb0 [ 106.917820][ T9907] ? __kasan_check_read+0x11/0x20 [ 106.922884][ T9907] ? ksys_dup3+0x3e0/0x3e0 [ 106.927349][ T9907] ? __fget_light+0x1a9/0x230 [ 106.932025][ T9907] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 106.938356][ T9907] do_writev+0x15b/0x330 [ 106.942958][ T9907] ? vfs_writev+0x2f0/0x2f0 [ 106.947462][ T9907] ? do_syscall_64+0x26/0x790 [ 106.952140][ T9907] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 106.958333][ T9907] ? do_syscall_64+0x26/0x790 [ 106.963024][ T9907] __x64_sys_writev+0x75/0xb0 [ 106.967713][ T9907] do_syscall_64+0xfa/0x790 [ 106.972208][ T9907] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 106.978098][ T9907] RIP: 0033:0x44d661 [ 106.981982][ T9907] Code: 75 14 b8 14 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 c4 cb fb ff c3 48 83 ec 08 e8 fa 2b 00 00 48 89 04 24 b8 14 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 43 2c 00 00 48 89 d0 48 83 c4 08 48 3d 01 [ 107.001741][ T9907] RSP: 002b:00007f30fbd28c50 EFLAGS: 00000293 ORIG_RAX: 0000000000000014 [ 107.012158][ T9907] RAX: ffffffffffffffda RBX: 00000000006dfc28 RCX: 000000000044d661 [ 107.020131][ T9907] RDX: 0000000000000001 RSI: 00007f30fbd28c60 RDI: 00000000000000f0 [ 107.028117][ T9907] RBP: 00000000006dfc20 R08: 0000000000000000 R09: 0000000000000013 [ 107.036092][ T9907] R10: 0000000000000000 R11: 0000000000000293 R12: 00000000006dfc2c [ 107.044059][ T9907] R13: 00007ffd55f3afff R14: 00007f30fbd299c0 R15: 0000000000000000 [ 107.052408][ T9907] Modules linked in: [ 107.056298][ T9907] CR2: ffff887fa01a4fff [ 107.060463][ T9907] ---[ end trace a35ec6f04a097ba5 ]--- [ 107.065932][ T9907] RIP: 0010:do_xdp_generic.part.0+0x479/0x1790 [ 107.072104][ T9907] 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 [ 107.091720][ T9907] RSP: 0018:ffffc90000f77770 EFLAGS: 00010246 [ 107.097787][ T9907] RAX: dffffc0000000000 RBX: ffff8880a0195000 RCX: ffffffff0000feff [ 107.105762][ T9907] RDX: 1ffff10ff40349ff RSI: ffff8880a862e8b0 RDI: 0000000000000005 [ 107.113833][ T9907] RBP: ffffc90000f778b0 R08: ffff888097fe6640 R09: ffffed1014032a5d [ 107.121806][ T9907] R10: ffffed1014032a5c R11: ffff8880a01952e3 R12: ffff887fa01a4fff [ 107.129777][ T9907] R13: 0000000000000100 R14: ffff8880a01a4fff R15: ffff8880a862e840 [ 107.137868][ T9907] FS: 00007f30fbd29700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 107.146823][ T9907] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 107.153409][ T9907] CR2: ffff887fa01a4fff CR3: 000000009118f000 CR4: 00000000001406f0 [ 107.161375][ T9907] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 107.169344][ T9907] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 107.177321][ T9907] Kernel panic - not syncing: Fatal exception in interrupt [ 107.186090][ T9907] Kernel Offset: disabled [ 107.190514][ T9907] Rebooting in 86400 seconds..