[ 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... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.43' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 55.605706][ T6814] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN [ 55.617532][ T6814] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 55.626036][ T6814] CPU: 0 PID: 6814 Comm: syz-executor235 Not tainted 5.8.0-rc2-next-20200626-syzkaller #0 [ 55.635914][ T6814] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.645984][ T6814] RIP: 0010:__queue_work+0x39a/0xff0 [ 55.651445][ T6814] Code: 0a 9e 06 48 89 d8 48 c1 e8 03 80 3c 28 00 0f 85 f6 0b 00 00 48 8b 3b e8 e4 08 9e 06 eb 26 e8 bd f5 27 00 48 89 d8 48 c1 e8 03 <80> 3c 28 00 0f 85 ae 0b 00 00 4c 8b 2b e8 a4 f5 27 00 4c 89 ef e8 [ 55.671229][ T6814] RSP: 0018:ffffc9000193fb30 EFLAGS: 00010046 [ 55.677272][ T6814] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff814b6ec8 [ 55.685219][ T6814] RDX: ffff888097300540 RSI: ffffffff814bf443 RDI: 0000000000000005 [ 55.693264][ T6814] RBP: dffffc0000000000 R08: 0000000000000001 R09: ffff8880961c8b5f [ 55.701223][ T6814] R10: 000000007fffffff R11: 0000000000000000 R12: ffff8880961c8b58 [ 55.709227][ T6814] R13: 0000000000000000 R14: ffff88809a114800 R15: 0000000000000040 [ 55.717284][ T6814] FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 55.726202][ T6814] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 55.732813][ T6814] CR2: 0000563adfee86e0 CR3: 0000000009a79000 CR4: 00000000001506f0 [ 55.740760][ T6814] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 55.748702][ T6814] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 55.756644][ T6814] Call Trace: [ 55.759931][ T6814] ? lockdep_hardirqs_off+0x66/0xa0 [ 55.765129][ T6814] queue_work_on+0x18b/0x200 [ 55.769695][ T6814] hci_adv_monitors_clear+0x150/0x1d0 [ 55.775049][ T6814] ? hci_add_adv_instance+0x7e0/0x7e0 [ 55.780395][ T6814] ? hci_adv_instances_clear+0x1ce/0x370 [ 55.785997][ T6814] ? hci_smp_irks_clear+0x1d/0x1b0 [ 55.791102][ T6814] ? vhci_close_dev+0x50/0x50 [ 55.795939][ T6814] hci_unregister_dev+0x417/0xe20 [ 55.800946][ T6814] ? fcntl_setlk+0xf60/0xf60 [ 55.805514][ T6814] ? vhci_close_dev+0x50/0x50 [ 55.810338][ T6814] vhci_release+0x70/0xe0 [ 55.814669][ T6814] __fput+0x33c/0x880 [ 55.818641][ T6814] task_work_run+0xdd/0x190 [ 55.823115][ T6814] do_exit+0xb72/0x2a40 [ 55.827244][ T6814] ? mm_update_next_owner+0x7a0/0x7a0 [ 55.832589][ T6814] ? vfs_write+0x161/0x5d0 [ 55.836983][ T6814] ? lock_is_held_type+0xb0/0xe0 [ 55.841896][ T6814] do_group_exit+0x125/0x310 [ 55.846469][ T6814] __x64_sys_exit_group+0x3a/0x50 [ 55.851510][ T6814] do_syscall_64+0x60/0xe0 [ 55.858680][ T6814] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 55.864629][ T6814] RIP: 0033:0x43ee18 [ 55.868509][ T6814] Code: Bad RIP value. [ 55.872546][ T6814] RSP: 002b:00007ffc986682f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 55.880928][ T6814] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ee18 [ 55.889057][ T6814] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 55.897013][ T6814] RBP: 00000000004be628 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 55.904962][ T6814] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 55.913182][ T6814] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 55.921840][ T6814] Modules linked in: [ 55.925915][ T6814] ---[ end trace 4b62b2821d1a0de7 ]--- [ 55.931365][ T6814] RIP: 0010:__queue_work+0x39a/0xff0 [ 55.936637][ T6814] Code: 0a 9e 06 48 89 d8 48 c1 e8 03 80 3c 28 00 0f 85 f6 0b 00 00 48 8b 3b e8 e4 08 9e 06 eb 26 e8 bd f5 27 00 48 89 d8 48 c1 e8 03 <80> 3c 28 00 0f 85 ae 0b 00 00 4c 8b 2b e8 a4 f5 27 00 4c 89 ef e8 [ 55.956217][ T6814] RSP: 0018:ffffc9000193fb30 EFLAGS: 00010046 [ 55.962266][ T6814] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff814b6ec8 [ 55.970305][ T6814] RDX: ffff888097300540 RSI: ffffffff814bf443 RDI: 0000000000000005 [ 55.978863][ T6814] RBP: dffffc0000000000 R08: 0000000000000001 R09: ffff8880961c8b5f [ 55.986813][ T6814] R10: 000000007fffffff R11: 0000000000000000 R12: ffff8880961c8b58 [ 55.994768][ T6814] R13: 0000000000000000 R14: ffff88809a114800 R15: 0000000000000040 [ 56.002725][ T6814] FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 56.011668][ T6814] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 56.018231][ T6814] CR2: 0000563adfee86e0 CR3: 0000000009a79000 CR4: 00000000001506f0 [ 56.026671][ T6814] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 56.034620][ T6814] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 56.042578][ T6814] Kernel panic - not syncing: Fatal exception [ 56.050248][ T6814] Kernel Offset: disabled [ 56.054738][ T6814] Rebooting in 86400 seconds..