[ 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 '10.128.0.28' (ECDSA) to the list of known hosts. syzkaller login: [ 40.624361] IPVS: ftp: loaded support on port[0] = 21 executing program [ 40.773271] list_del corruption. prev->next should be ffff8880b52b6ae0, but was ffff8880a4478338 [ 40.782942] ------------[ cut here ]------------ [ 40.787704] kernel BUG at lib/list_debug.c:51! [ 40.792818] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 40.798350] CPU: 0 PID: 8140 Comm: syz-executor242 Not tainted 4.19.211-syzkaller #0 [ 40.807236] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 [ 40.816598] RIP: 0010:__list_del_entry_valid.cold+0xf/0x4a [ 40.822264] Code: e8 25 43 f7 ff 0f 0b 48 89 f1 48 c7 c7 a0 e2 b3 88 4c 89 e6 e8 11 43 f7 ff 0f 0b 48 89 ee 48 c7 c7 40 e4 b3 88 e8 00 43 f7 ff <0f> 0b 4c 89 ea 48 89 ee 48 c7 c7 80 e3 b3 88 e8 ec 42 f7 ff 0f 0b [ 40.841672] RSP: 0018:ffff8880b0c079d0 EFLAGS: 00010282 [ 40.847028] RAX: 0000000000000054 RBX: 0000000000000001 RCX: 0000000000000000 [ 40.854305] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1016180f2c [ 40.861577] RBP: ffff8880b52b6ae0 R08: 0000000000000054 R09: 0000000000000000 [ 40.869096] R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880b52ba2e0 [ 40.876488] R13: ffff8880b52ba2e0 R14: ffff8880b05bc600 R15: 0000000000000000 [ 40.883861] FS: 00005555558c7300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 40.892199] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 40.898269] CR2: 00007ff575e29fa8 CR3: 0000000009e6d000 CR4: 00000000003406f0 [ 40.905706] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 40.913196] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 40.920468] Call Trace: [ 40.923115] klist_dec_and_del+0x97/0x480 [ 40.927272] ? __device_link_free_srcu+0x110/0x110 [ 40.932199] klist_put+0x7a/0x150 [ 40.935646] device_del+0x162/0xaf0 [ 40.939384] ? klist_iter_exit+0xc/0x80 [ 40.943357] ? device_link_remove+0x100/0x100 [ 40.947849] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 40.952963] hci_conn_del_sysfs+0xdc/0x180 [ 40.957184] hci_conn_cleanup+0x24b/0x550 [ 40.961324] hci_conn_del+0x2a0/0x780 [ 40.965121] hci_conn_hash_flush+0x19c/0x260 [ 40.969521] ? vhci_close_dev+0x50/0x50 [ 40.973492] hci_dev_do_close+0x6bc/0x1020 [ 40.977729] ? hci_dev_open+0x250/0x250 [ 40.981849] ? hci_unregister_dev+0x35/0x460 [ 40.986266] ? fsnotify_first_mark+0x200/0x200 [ 40.990841] ? vhci_close_dev+0x50/0x50 [ 40.994809] hci_unregister_dev+0x14f/0x460 [ 40.999115] vhci_release+0x70/0xe0 [ 41.002725] __fput+0x2ce/0x890 [ 41.005999] task_work_run+0x148/0x1c0 [ 41.009962] do_exit+0xbf3/0x2be0 [ 41.013528] ? lock_downgrade+0x720/0x720 [ 41.017670] ? mm_update_next_owner+0x650/0x650 [ 41.022335] ? up_read+0x17/0x110 [ 41.025870] ? __do_page_fault+0x180/0xd60 [ 41.030094] do_group_exit+0x125/0x310 [ 41.033989] __x64_sys_exit_group+0x3a/0x50 [ 41.038755] do_syscall_64+0xf9/0x620 [ 41.042621] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 41.047892] RIP: 0033:0x7ff575dd3519 [ 41.051598] Code: Bad RIP value. [ 41.054945] RSP: 002b:00007ffca110e5b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 41.062643] RAX: ffffffffffffffda RBX: 00007ff575e5d390 RCX: 00007ff575dd3519 [ 41.070036] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 41.077301] RBP: 0000000000000001 R08: ffffffffffffffb8 R09: 00007ffca110e080 [ 41.084561] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff575e5d390 [ 41.091918] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 41.099318] Modules linked in: [ 41.102705] ---[ end trace 209878e20da47e23 ]--- [ 41.107477] RIP: 0010:__list_del_entry_valid.cold+0xf/0x4a [ 41.113154] Code: e8 25 43 f7 ff 0f 0b 48 89 f1 48 c7 c7 a0 e2 b3 88 4c 89 e6 e8 11 43 f7 ff 0f 0b 48 89 ee 48 c7 c7 40 e4 b3 88 e8 00 43 f7 ff <0f> 0b 4c 89 ea 48 89 ee 48 c7 c7 80 e3 b3 88 e8 ec 42 f7 ff 0f 0b [ 41.132595] RSP: 0018:ffff8880b0c079d0 EFLAGS: 00010282 [ 41.138069] RAX: 0000000000000054 RBX: 0000000000000001 RCX: 0000000000000000 [ 41.147751] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed1016180f2c [ 41.155061] RBP: ffff8880b52b6ae0 R08: 0000000000000054 R09: 0000000000000000 [ 41.162364] R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880b52ba2e0 [ 41.169677] R13: ffff8880b52ba2e0 R14: ffff8880b05bc600 R15: 0000000000000000 [ 41.178242] FS: 00005555558c7300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 41.186487] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 41.192412] CR2: 00007ff575dd34ef CR3: 0000000009e6d000 CR4: 00000000003406f0 [ 41.199817] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 41.207169] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 41.217000] Kernel panic - not syncing: Fatal exception [ 41.222599] Kernel Offset: disabled [ 41.226794] Rebooting in 86400 seconds..