[ 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... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.250' (ECDSA) to the list of known hosts. syzkaller login: [ 85.441473][ T8512] IPVS: ftp: loaded support on port[0] = 21 executing program [ 85.557734][ T8512] list_del corruption. prev->next should be ffff88801b11ec68, but was ffff88801b644040 [ 85.568276][ T8512] ------------[ cut here ]------------ [ 85.573768][ T8512] kernel BUG at lib/list_debug.c:51! [ 85.579374][ T8512] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 85.585546][ T8512] CPU: 1 PID: 8512 Comm: syz-executor819 Not tainted 5.10.0-rc7-syzkaller #0 [ 85.594434][ T8512] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 85.604711][ T8512] RIP: 0010:__list_del_entry_valid.cold+0xf/0x4a [ 85.611071][ T8512] Code: e8 fb 12 f7 ff 0f 0b 48 89 f1 48 c7 c7 40 94 9d 89 4c 89 e6 e8 e7 12 f7 ff 0f 0b 48 89 ee 48 c7 c7 e0 95 9d 89 e8 d6 12 f7 ff <0f> 0b 4c 89 ea 48 89 ee 48 c7 c7 20 95 9d 89 e8 c2 12 f7 ff 0f 0b [ 85.631132][ T8512] RSP: 0018:ffffc9000177f998 EFLAGS: 00010286 [ 85.637352][ T8512] RAX: 0000000000000054 RBX: 0000000000000001 RCX: 0000000000000000 [ 85.645435][ T8512] RDX: ffff8880189b8000 RSI: ffffffff8158c835 RDI: fffff520002eff25 [ 85.653444][ T8512] RBP: ffff88801b11ec68 R08: 0000000000000054 R09: ffff8880b9f30627 [ 85.661582][ T8512] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888011063068 [ 85.669782][ T8512] R13: ffff888011063068 R14: ffff88801b11ec60 R15: 0000000000000000 [ 85.677759][ T8512] FS: 0000000000000000(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 [ 85.686916][ T8512] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 85.693866][ T8512] CR2: 0000000020000200 CR3: 000000000b08e000 CR4: 00000000001506e0 [ 85.701901][ T8512] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 85.711049][ T8512] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 85.719481][ T8512] Call Trace: [ 85.723479][ T8512] klist_release+0x66/0x480 [ 85.728340][ T8512] ? __device_link_free_srcu+0x120/0x120 [ 85.734289][ T8512] klist_put+0xf7/0x1d0 [ 85.738840][ T8512] device_del+0x245/0xec0 [ 85.743169][ T8512] ? klist_iter_exit+0xc/0x80 [ 85.748029][ T8512] ? device_link_add_missing_supplier_links+0x370/0x370 [ 85.755530][ T8512] hci_conn_del_sysfs+0xdc/0x180 [ 85.760862][ T8512] hci_conn_cleanup+0x2e7/0x6c0 [ 85.765904][ T8512] hci_conn_del+0x2a0/0x790 [ 85.770428][ T8512] hci_conn_hash_flush+0x19c/0x260 [ 85.775540][ T8512] hci_dev_do_close+0x569/0x1110 [ 85.780601][ T8512] ? hci_dev_open+0x300/0x300 [ 85.785529][ T8512] ? do_raw_read_unlock+0x70/0x70 [ 85.790608][ T8512] ? try_to_grab_pending+0xd0/0xd0 [ 85.796480][ T8512] hci_unregister_dev+0x223/0xfe0 [ 85.802166][ T8512] ? fcntl_setlk+0xf10/0xf10 [ 85.806772][ T8512] vhci_release+0x70/0xe0 [ 85.811383][ T8512] __fput+0x285/0x920 [ 85.815831][ T8512] ? vhci_close_dev+0x50/0x50 [ 85.821106][ T8512] task_work_run+0xdd/0x190 [ 85.826132][ T8512] do_exit+0xb64/0x29b0 [ 85.831253][ T8512] ? mm_update_next_owner+0x7a0/0x7a0 [ 85.837127][ T8512] ? vfs_write+0x18e/0xa30 [ 85.841919][ T8512] do_group_exit+0x125/0x310 [ 85.846671][ T8512] __x64_sys_exit_group+0x3a/0x50 [ 85.851913][ T8512] do_syscall_64+0x2d/0x70 [ 85.856439][ T8512] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 85.862859][ T8512] RIP: 0033:0x445098 [ 85.866861][ T8512] Code: Unable to access opcode bytes at RIP 0x44506e. [ 85.873981][ T8512] RSP: 002b:00007ffeec93f2f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 85.882642][ T8512] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000445098 [ 85.890951][ T8512] RDX: 0000000000000001 RSI: 000000000000003c RDI: 0000000000000001 [ 85.899175][ T8512] RBP: 00000000004ccdf0 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 85.907543][ T8512] R10: 0000000000000015 R11: 0000000000000246 R12: 0000000000000001 [ 85.915701][ T8512] R13: 00000000006e0200 R14: 0000000000000000 R15: 0000000000000000 [ 85.923676][ T8512] Modules linked in: [ 85.928170][ T8512] ---[ end trace e0d5d8f0eda11654 ]--- [ 85.934124][ T8512] RIP: 0010:__list_del_entry_valid.cold+0xf/0x4a [ 85.940694][ T8512] Code: e8 fb 12 f7 ff 0f 0b 48 89 f1 48 c7 c7 40 94 9d 89 4c 89 e6 e8 e7 12 f7 ff 0f 0b 48 89 ee 48 c7 c7 e0 95 9d 89 e8 d6 12 f7 ff <0f> 0b 4c 89 ea 48 89 ee 48 c7 c7 20 95 9d 89 e8 c2 12 f7 ff 0f 0b [ 85.961562][ T8512] RSP: 0018:ffffc9000177f998 EFLAGS: 00010286 [ 85.967987][ T8512] RAX: 0000000000000054 RBX: 0000000000000001 RCX: 0000000000000000 [ 85.976377][ T8512] RDX: ffff8880189b8000 RSI: ffffffff8158c835 RDI: fffff520002eff25 [ 85.984803][ T8512] RBP: ffff88801b11ec68 R08: 0000000000000054 R09: ffff8880b9f30627 [ 85.993114][ T8512] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888011063068 [ 86.001753][ T8512] R13: ffff888011063068 R14: ffff88801b11ec60 R15: 0000000000000000 [ 86.010121][ T8512] FS: 0000000000000000(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 [ 86.019930][ T8512] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 86.027948][ T8512] CR2: 0000000020000200 CR3: 000000000b08e000 CR4: 00000000001506e0 [ 86.036987][ T8512] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 86.045039][ T8512] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 86.053535][ T8512] Kernel panic - not syncing: Fatal exception [ 86.061296][ T8512] Kernel Offset: disabled [ 86.066728][ T8512] Rebooting in 86400 seconds..