[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.39' (ECDSA) to the list of known hosts. syzkaller login: [ 45.868804][ T6808] IPVS: ftp: loaded support on port[0] = 21 executing program [ 46.960441][ T6832] general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN [ 46.972334][ T6832] KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] [ 46.980751][ T6832] CPU: 1 PID: 6832 Comm: kworker/u5:2 Not tainted 5.8.0-rc7-syzkaller #0 [ 46.989245][ T6832] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.999316][ T6832] Workqueue: hci0 hci_rx_work [ 47.004006][ T6832] RIP: 0010:hci_event_packet+0x8386/0x18260 [ 47.009899][ T6832] Code: c1 e8 03 49 be 00 00 00 00 00 fc ff df 42 80 3c 30 00 74 08 48 89 df e8 58 9a 5e fa 48 8b 1b 48 83 c3 10 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 df e8 3b 9a 5e fa 48 8b 1b 48 89 d8 48 [ 47.029815][ T6832] RSP: 0018:ffffc90001617ac8 EFLAGS: 00010202 [ 47.035867][ T6832] RAX: 0000000000000002 RBX: 0000000000000010 RCX: dffffc0000000000 [ 47.043821][ T6832] RDX: ffff88809405e0c0 RSI: 0000000000000000 RDI: 0000000000000000 [ 47.052554][ T6832] RBP: ffff888093d86000 R08: ffffffff875506b4 R09: fffffbfff131a9a6 [ 47.060608][ T6832] R10: fffffbfff131a9a6 R11: 0000000000000000 R12: ffff888093df8010 [ 47.068569][ T6832] R13: ffff888093df9110 R14: dffffc0000000000 R15: ffff888093df8000 [ 47.076528][ T6832] FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 47.085499][ T6832] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.092163][ T6832] CR2: 0000000020000000 CR3: 000000009508c000 CR4: 00000000001406e0 [ 47.100413][ T6832] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 47.109535][ T6832] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 47.117573][ T6832] Call Trace: [ 47.120906][ T6832] ? trace_lock_release+0x137/0x1a0 [ 47.126091][ T6832] ? _raw_spin_unlock_irqrestore+0x6f/0xd0 [ 47.131878][ T6832] ? lockdep_hardirqs_on+0x38/0xe0 [ 47.137164][ T6832] hci_rx_work+0x236/0x9c0 [ 47.141564][ T6832] process_one_work+0x789/0xfc0 [ 47.146434][ T6832] worker_thread+0xaa4/0x1460 [ 47.151126][ T6832] ? _raw_spin_unlock_irqrestore+0x6f/0xd0 [ 47.157007][ T6832] kthread+0x37e/0x3a0 [ 47.161054][ T6832] ? rcu_lock_release+0x20/0x20 [ 47.165969][ T6832] ? kthread_blkcg+0xd0/0xd0 [ 47.170540][ T6832] ret_from_fork+0x1f/0x30 [ 47.174970][ T6832] Modules linked in: [ 47.179029][ T6832] ---[ end trace db5488a3bccd1b06 ]--- [ 47.184749][ T6832] RIP: 0010:hci_event_packet+0x8386/0x18260 [ 47.190645][ T6832] Code: c1 e8 03 49 be 00 00 00 00 00 fc ff df 42 80 3c 30 00 74 08 48 89 df e8 58 9a 5e fa 48 8b 1b 48 83 c3 10 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 df e8 3b 9a 5e fa 48 8b 1b 48 89 d8 48 [ 47.210749][ T6832] RSP: 0018:ffffc90001617ac8 EFLAGS: 00010202 [ 47.216860][ T6832] RAX: 0000000000000002 RBX: 0000000000000010 RCX: dffffc0000000000 [ 47.224886][ T6832] RDX: ffff88809405e0c0 RSI: 0000000000000000 RDI: 0000000000000000 [ 47.232854][ T6832] RBP: ffff888093d86000 R08: ffffffff875506b4 R09: fffffbfff131a9a6 [ 47.240910][ T6832] R10: fffffbfff131a9a6 R11: 0000000000000000 R12: ffff888093df8010 [ 47.249138][ T6832] R13: ffff888093df9110 R14: dffffc0000000000 R15: ffff888093df8000 [ 47.257145][ T6832] FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 47.266110][ T6832] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.272686][ T6832] CR2: 0000000020000000 CR3: 0000000009479000 CR4: 00000000001406e0 [ 47.280694][ T6832] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 47.288712][ T6832] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 47.296853][ T6832] Kernel panic - not syncing: Fatal exception [ 47.304362][ T6832] Kernel Offset: disabled [ 47.308700][ T6832] Rebooting in 86400 seconds..