[ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.4' (ECDSA) to the list of known hosts. syzkaller login: [ 63.977093][ T6865] IPVS: ftp: loaded support on port[0] = 21 [ 63.982143][ T6859] IPVS: ftp: loaded support on port[0] = 21 [ 63.986778][ T6863] IPVS: ftp: loaded support on port[0] = 21 [ 63.995415][ T6864] IPVS: ftp: loaded support on port[0] = 21 [ 64.006419][ T6866] IPVS: ftp: loaded support on port[0] = 21 [ 64.017737][ T6867] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 73.453941][T10842] ------------[ cut here ]------------ [ 73.453944][T10844] ------------[ cut here ]------------ [ 73.453959][T10844] kernel BUG at fs/inode.c:1668! [ 73.459893][T10839] ------------[ cut here ]------------ [ 73.467344][T10844] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 73.470587][T10863] ------------[ cut here ]------------ [ 73.476485][T10844] CPU: 0 PID: 10844 Comm: syz-executor067 Not tainted 5.9.0-rc1-syzkaller #0 [ 73.476492][T10844] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.476510][T10844] RIP: 0010:iput+0x64/0x70 [ 73.476528][T10844] Code: ff 83 e3 40 48 89 de e8 3a d9 ad ff 48 85 db 75 14 e8 90 dc ad ff 48 89 ef e8 58 f7 ff ff 5b 5d e9 81 dc ad ff e8 7c dc ad ff <0f> 0b e8 05 f5 ed ff eb c5 0f 1f 00 41 56 41 55 41 54 55 48 89 fd [ 73.484176][T10833] ------------[ cut here ]------------ [ 73.488809][T10844] RSP: 0018:ffffc9000e367e10 EFLAGS: 00010293 [ 73.497548][T10833] ODEBUG: free active (active state 1) object type: rcu_head hint: 0x0 [ 73.507583][T10844] RAX: 0000000000000000 RBX: 0000000000000040 RCX: ffffffff81c66276 [ 73.512387][T10833] WARNING: CPU: 1 PID: 10833 at lib/debugobjects.c:485 debug_print_object+0x160/0x250 [ 73.531589][T10844] RDX: ffff888095df42c0 RSI: ffffffff81c66294 RDI: 0000000000000007 [ 73.537038][T10833] Kernel panic - not syncing: panic_on_warn set ... [ 73.543086][T10844] RBP: ffff888089d03600 R08: 0000000000000001 R09: ffff88809639c5e3 [ 73.591239][T10844] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 [ 73.599211][T10844] R13: ffff888089d03560 R14: ffff888089d03600 R15: ffff88808721bb48 [ 73.607305][T10844] FS: 0000000002489880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 73.616227][T10844] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 73.622795][T10844] CR2: 00007fd1a2dab000 CR3: 000000008cb9f000 CR4: 00000000001506f0 [ 73.630763][T10844] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 73.638714][T10844] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 73.646662][T10844] Call Trace: [ 73.649943][T10844] __sock_release+0x20c/0x280 [ 73.654623][T10844] sock_close+0x18/0x20 [ 73.658776][T10844] __fput+0x285/0x920 [ 73.662752][T10844] ? __sock_release+0x280/0x280 [ 73.667589][T10844] task_work_run+0xdd/0x190 [ 73.672079][T10844] exit_to_user_mode_prepare+0x195/0x1c0 [ 73.677691][T10844] syscall_exit_to_user_mode+0x59/0x2b0 [ 73.683233][T10844] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 73.689104][T10844] RIP: 0033:0x405881 [ 73.692980][T10844] Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 04 19 00 00 c3 48 83 ec 08 e8 6a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 b3 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 [ 73.712563][T10844] RSP: 002b:00007ffca88287b0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 [ 73.720952][T10844] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000405881 [ 73.728901][T10844] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 [ 73.737459][T10844] RBP: 0000000000000005 R08: 0000000120080522 R09: 0000000120080522 [ 73.746222][T10844] R10: 00007ffca88287d0 R11: 0000000000000293 R12: 00000000006dbc4c [ 73.754176][T10844] R13: 000000000000002d R14: 0000000000000064 R15: 0000000000000000 [ 73.762128][T10844] Modules linked in: [ 73.767303][T10833] Kernel Offset: disabled [ 73.771678][T10833] Rebooting in 86400 seconds..