[ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ 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 '10.128.0.162' (ECDSA) to the list of known hosts. syzkaller login: [ 62.490264][ T6860] IPVS: ftp: loaded support on port[0] = 21 [ 62.494738][ T6864] IPVS: ftp: loaded support on port[0] = 21 [ 62.508676][ T6866] IPVS: ftp: loaded support on port[0] = 21 [ 62.515500][ T6867] IPVS: ftp: loaded support on port[0] = 21 [ 62.525515][ T6865] IPVS: ftp: loaded support on port[0] = 21 [ 62.534913][ T6868] 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 [ 69.282939][T10708] ------------[ cut here ]------------ [ 69.288444][T10708] kernel BUG at fs/inode.c:1668! executing program [ 69.329676][T10708] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 69.335784][T10708] CPU: 1 PID: 10708 Comm: syz-executor090 Not tainted 5.9.0-rc2-next-20200828-syzkaller #0 [ 69.345750][T10708] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.356428][T10708] RIP: 0010:iput+0x64/0x70 executing program [ 69.360854][T10708] Code: ff 83 e3 40 48 89 de e8 5a 71 ad ff 48 85 db 75 14 e8 b0 74 ad ff 48 89 ef e8 58 f7 ff ff 5b 5d e9 a1 74 ad ff e8 9c 74 ad ff <0f> 0b e8 f5 ef ed ff eb c5 0f 1f 00 41 56 41 55 41 54 55 48 89 fd [ 69.380549][T10708] RSP: 0018:ffffc9000dea7e10 EFLAGS: 00010293 [ 69.386622][T10708] RAX: 0000000000000000 RBX: 0000000000000040 RCX: ffffffff81c707d6 [ 69.394608][T10708] RDX: ffff8880a4486380 RSI: ffffffff81c707f4 RDI: 0000000000000007 [ 69.402584][T10708] RBP: ffff88809ab250c0 R08: 0000000000000001 R09: ffff8880a2ef4323 [ 69.410615][T10708] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 [ 69.418591][T10708] R13: ffff88809ab25020 R14: ffff88809ab250c0 R15: ffff88808ab5b950 executing program executing program [ 69.426568][T10708] FS: 000000000118c880(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 69.435582][T10708] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 69.442166][T10708] CR2: 00007fc13034ee78 CR3: 0000000095a09000 CR4: 00000000001506e0 [ 69.450138][T10708] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 69.458110][T10708] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 69.466096][T10708] Call Trace: [ 69.469393][T10708] __sock_release+0x20c/0x280 [ 69.474071][T10708] sock_close+0x18/0x20 executing program [ 69.478224][T10708] __fput+0x285/0x920 [ 69.482209][T10708] ? __sock_release+0x280/0x280 [ 69.487058][T10708] task_work_run+0xdd/0x190 [ 69.491560][T10708] exit_to_user_mode_prepare+0x195/0x1c0 [ 69.497190][T10708] syscall_exit_to_user_mode+0x59/0x2b0 [ 69.502736][T10708] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 69.508640][T10708] RIP: 0033:0x4058a1 executing program executing program [ 69.512542][T10708] 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 [ 69.532147][T10708] RSP: 002b:00007fffd550be30 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 [ 69.540568][T10708] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00000000004058a1 [ 69.548545][T10708] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 [ 69.556557][T10708] RBP: 0000000000000005 R08: 0000000120080522 R09: 0000000120080522 [ 69.564532][T10708] R10: 0000000120080522 R11: 0000000000000293 R12: 00000000006dbc4c [ 69.572586][T10708] R13: 0000000000000001 R14: 00000000006dbc40 R15: 0000000000000064 executing program executing program executing program [ 69.580555][T10708] Modules linked in: executing program executing program executing program executing program [ 69.671362][T10708] ---[ end trace 78eef8f3fcfab54a ]--- [ 69.695764][T10708] RIP: 0010:iput+0x64/0x70 executing program executing program executing program executing program executing program [ 69.713666][T10708] Code: ff 83 e3 40 48 89 de e8 5a 71 ad ff 48 85 db 75 14 e8 b0 74 ad ff 48 89 ef e8 58 f7 ff ff 5b 5d e9 a1 74 ad ff e8 9c 74 ad ff <0f> 0b e8 f5 ef ed ff eb c5 0f 1f 00 41 56 41 55 41 54 55 48 89 fd [ 69.755009][T10708] RSP: 0018:ffffc9000dea7e10 EFLAGS: 00010293 executing program executing program executing program executing program executing program executing program [ 69.850181][T10708] RAX: 0000000000000000 RBX: 0000000000000040 RCX: ffffffff81c707d6 [ 69.867508][T10708] RDX: ffff8880a4486380 RSI: ffffffff81c707f4 RDI: 0000000000000007 executing program executing program executing program [ 69.898143][T10708] RBP: ffff88809ab250c0 R08: 0000000000000001 R09: ffff8880a2ef4323 executing program executing program executing program [ 69.942543][T10708] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 [ 69.959572][T10708] R13: ffff88809ab25020 R14: ffff88809ab250c0 R15: ffff88808ab5b950 executing program executing program executing program executing program executing program executing program [ 70.017885][T10708] FS: 000000000118c880(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 executing program executing program [ 70.071805][T10708] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.084591][T10708] CR2: 00007fc13034ee78 CR3: 0000000095a09000 CR4: 00000000001506e0 [ 70.094269][T10708] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 executing program executing program executing program executing program executing program [ 70.138098][T10708] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 executing program executing program [ 70.242883][T10708] Kernel panic - not syncing: Fatal exception [ 70.250378][T10708] Kernel Offset: disabled [ 70.254705][T10708] Rebooting in 86400 seconds..