[ 92.504492][ T27] audit: type=1800 audit(1579601898.678:26): pid=9462 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 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. [ 93.645564][ T27] kauditd_printk_skb: 2 callbacks suppressed [ 93.645576][ T27] audit: type=1800 audit(1579601899.828:29): pid=9462 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 [ 93.672387][ T27] audit: type=1800 audit(1579601899.828:30): pid=9462 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 '10.128.0.79' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 105.022511][ T9616] IPVS: ftp: loaded support on port[0] = 21 [ 105.069020][ T9616] netlink: 'syz-executor094': attribute type 1 has an invalid length. [ 105.077414][ T9616] netlink: 'syz-executor094': attribute type 1 has an invalid length. [ 105.086438][ T9616] netlink: 'syz-executor094': attribute type 1 has an invalid length. [ 105.094692][ T9616] netlink: 'syz-executor094': attribute type 1 has an invalid length. [ 105.103139][ T9616] netlink: 'syz-executor094': attribute type 1 has an invalid length. [ 105.111421][ T9616] netlink: 'syz-executor094': attribute type 1 has an invalid length. [ 105.119642][ T9616] netlink: 'syz-executor094': attribute type 1 has an invalid length. [ 105.127798][ T9616] netlink: 'syz-executor094': attribute type 1 has an invalid length. [ 105.136063][ T9616] netlink: 'syz-executor094': attribute type 1 has an invalid length. [ 105.144466][ T9616] netlink: 'syz-executor094': attribute type 1 has an invalid length. [ 105.153204][ T9616] BUG: unable to handle page fault for address: ffff887f8ed87fff [ 105.161003][ T9616] #PF: supervisor read access in kernel mode [ 105.166960][ T9616] #PF: error_code(0x0000) - not-present page [ 105.172913][ T9616] PGD 0 P4D 0 [ 105.176278][ T9616] Oops: 0000 [#1] PREEMPT SMP KASAN [ 105.181451][ T9616] CPU: 1 PID: 9616 Comm: syz-executor094 Not tainted 5.5.0-rc7-syzkaller #0 [ 105.190152][ T9616] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 105.200227][ T9616] RIP: 0010:do_xdp_generic.part.0+0x479/0x1790 [ 105.206369][ T9616] 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 [ 105.225951][ T9616] RSP: 0018:ffffc90001f27770 EFLAGS: 00010246 [ 105.232006][ T9616] RAX: dffffc0000000000 RBX: ffff88808ed78000 RCX: ffffffff0000feff [ 105.239967][ T9616] RDX: 1ffff10ff1db0fff RSI: ffff8880a4fde9f0 RDI: 0000000000000005 [ 105.248032][ T9616] RBP: ffffc90001f278b0 R08: ffff88809e030600 R09: ffffed1011daf05d [ 105.256781][ T9616] R10: ffffed1011daf05c R11: ffff88808ed782e3 R12: ffff887f8ed87fff [ 105.264735][ T9616] R13: 0000000000000100 R14: ffff88808ed87fff R15: ffff8880a4fde980 [ 105.272698][ T9616] FS: 0000000001660880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 105.281629][ T9616] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 105.288190][ T9616] CR2: ffff887f8ed87fff CR3: 0000000095e2c000 CR4: 00000000001406e0 [ 105.296138][ T9616] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 105.304092][ T9616] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 105.312050][ T9616] Call Trace: [ 105.315329][ T9616] ? generic_xdp_tx+0x740/0x740 [ 105.320185][ T9616] ? rcu_read_lock_held+0x9c/0xb0 [ 105.325201][ T9616] do_xdp_generic+0x30/0x50 [ 105.329690][ T9616] tun_get_user+0x2bcd/0x3fc0 [ 105.334348][ T9616] ? __kasan_check_read+0x11/0x20 [ 105.339353][ T9616] ? aa_file_perm+0x617/0x1600 [ 105.344096][ T9616] ? tun_build_skb.isra.0+0x1470/0x1470 [ 105.349663][ T9616] ? rcu_read_lock_held+0x9c/0xb0 [ 105.354736][ T9616] ? __kasan_check_read+0x11/0x20 [ 105.359764][ T9616] tun_chr_write_iter+0xbd/0x156 [ 105.364684][ T9616] do_iter_readv_writev+0x5f8/0x8f0 [ 105.369883][ T9616] ? no_seek_end_llseek_size+0x70/0x70 [ 105.375325][ T9616] ? apparmor_file_permission+0x27/0x30 [ 105.380887][ T9616] ? rw_verify_area+0x126/0x360 [ 105.385718][ T9616] do_iter_write+0x184/0x610 [ 105.390300][ T9616] ? dup_iter+0x260/0x260 [ 105.394607][ T9616] ? sendmsg_copy_msghdr+0x70/0x70 [ 105.399699][ T9616] vfs_writev+0x1b3/0x2f0 [ 105.404016][ T9616] ? vfs_iter_write+0xb0/0xb0 [ 105.408670][ T9616] ? bpf_prog_new_fd+0x51/0x60 [ 105.413434][ T9616] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 105.419651][ T9616] ? __do_sys_bpf+0x751/0x3810 [ 105.424393][ T9616] ? __fget_light+0x1a9/0x230 [ 105.429056][ T9616] ? __fdget+0x1b/0x20 [ 105.433103][ T9616] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 105.439319][ T9616] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 105.445535][ T9616] ? __fget_light+0x1a9/0x230 [ 105.450192][ T9616] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 105.456410][ T9616] do_writev+0x15b/0x330 [ 105.460644][ T9616] ? vfs_writev+0x2f0/0x2f0 [ 105.465139][ T9616] ? do_syscall_64+0x26/0x790 [ 105.469804][ T9616] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 105.475846][ T9616] ? do_syscall_64+0x26/0x790 [ 105.480535][ T9616] __x64_sys_writev+0x75/0xb0 [ 105.485218][ T9616] do_syscall_64+0xfa/0x790 [ 105.489724][ T9616] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 105.495592][ T9616] RIP: 0033:0x4458f0 [ 105.499471][ T9616] Code: 05 48 3d 01 f0 ff ff 0f 83 1d d3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 83 3d 41 57 29 00 00 75 14 b8 14 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 f4 d2 fb ff c3 48 83 ec 08 e8 7a 2b 00 00 [ 105.519064][ T9616] RSP: 002b:00007fffd0c36c18 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 105.527451][ T9616] RAX: ffffffffffffffda RBX: 00007fffd0c36c30 RCX: 00000000004458f0 [ 105.535428][ T9616] RDX: 0000000000000001 RSI: 00007fffd0c36c60 RDI: 00000000000000f0 [ 105.543376][ T9616] RBP: 00007fffd0c36c20 R08: 0000000000000000 R09: 00000000bb1414ac [ 105.551330][ T9616] R10: 00000000bb1414ac R11: 0000000000000246 R12: 0000000000000003 [ 105.559351][ T9616] R13: 00007fffd0c36c28 R14: 0000000000000000 R15: 0000000000000000 [ 105.567334][ T9616] Modules linked in: [ 105.571215][ T9616] CR2: ffff887f8ed87fff [ 105.575353][ T9616] ---[ end trace 3f32f6a895197f7a ]--- [ 105.580799][ T9616] RIP: 0010:do_xdp_generic.part.0+0x479/0x1790 [ 105.586977][ T9616] 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 [ 105.606562][ T9616] RSP: 0018:ffffc90001f27770 EFLAGS: 00010246 [ 105.612619][ T9616] RAX: dffffc0000000000 RBX: ffff88808ed78000 RCX: ffffffff0000feff [ 105.620568][ T9616] RDX: 1ffff10ff1db0fff RSI: ffff8880a4fde9f0 RDI: 0000000000000005 [ 105.628516][ T9616] RBP: ffffc90001f278b0 R08: ffff88809e030600 R09: ffffed1011daf05d [ 105.636487][ T9616] R10: ffffed1011daf05c R11: ffff88808ed782e3 R12: ffff887f8ed87fff [ 105.644448][ T9616] R13: 0000000000000100 R14: ffff88808ed87fff R15: ffff8880a4fde980 [ 105.652398][ T9616] FS: 0000000001660880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 105.661300][ T9616] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 105.667957][ T9616] CR2: ffff887f8ed87fff CR3: 0000000095e2c000 CR4: 00000000001406e0 [ 105.675907][ T9616] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 105.683853][ T9616] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 105.691814][ T9616] Kernel panic - not syncing: Fatal exception in interrupt [ 105.700477][ T9616] Kernel Offset: disabled [ 105.704806][ T9616] Rebooting in 86400 seconds..