Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.128' (ECDSA) to the list of known hosts. syzkaller login: [ 57.264923][ T6803] IPVS: ftp: loaded support on port[0] = 21 executing program [ 58.369788][ T6826] general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN [ 58.381519][ T6826] KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] [ 58.389925][ T6826] CPU: 1 PID: 6826 Comm: kworker/u5:1 Not tainted 5.8.0-rc7-syzkaller #0 [ 58.398317][ T6826] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.408367][ T6826] Workqueue: hci0 hci_rx_work [ 58.413055][ T6826] RIP: 0010:hci_phy_link_complete_evt.isra.0+0x23e/0x790 [ 58.420047][ T6826] Code: 48 c1 ea 03 80 3c 02 00 0f 85 3e 05 00 00 48 8b 9d 30 09 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 10 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 da 04 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b [ 58.439619][ T6826] RSP: 0018:ffffc900015e7a38 EFLAGS: 00010202 [ 58.445654][ T6826] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff871af0e3 [ 58.453598][ T6826] RDX: 0000000000000002 RSI: ffffffff871af0f0 RDI: 0000000000000010 [ 58.461539][ T6826] RBP: ffff888095602000 R08: 0000000000000001 R09: ffff888095768e48 [ 58.469482][ T6826] R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 [ 58.477443][ T6826] R13: ffff888096afd110 R14: ffff88809201a40b R15: 00000000000000c8 [ 58.485387][ T6826] FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 58.494284][ T6826] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 58.500838][ T6826] CR2: 00007fe59cfd96c0 CR3: 000000009b2d9000 CR4: 00000000001406e0 [ 58.508781][ T6826] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 58.516723][ T6826] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 58.524666][ T6826] Call Trace: [ 58.527947][ T6826] hci_event_packet+0x481a/0x86f5 [ 58.532959][ T6826] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 58.538914][ T6826] ? __lock_acquire+0x16e3/0x56e0 [ 58.543912][ T6826] ? hci_cmd_complete_evt+0xc6e0/0xc6e0 [ 58.549433][ T6826] ? lock_acquire+0x1f1/0xad0 [ 58.554084][ T6826] ? skb_dequeue+0x1c/0x180 [ 58.558559][ T6826] ? find_held_lock+0x2d/0x110 [ 58.563308][ T6826] ? mark_lock+0xbc/0x1710 [ 58.567695][ T6826] ? mark_held_locks+0x9f/0xe0 [ 58.572432][ T6826] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 58.578210][ T6826] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.584161][ T6826] ? trace_hardirqs_on+0x5f/0x220 [ 58.589156][ T6826] ? lockdep_hardirqs_on+0x6a/0xe0 [ 58.594238][ T6826] hci_rx_work+0x22e/0xb10 [ 58.598626][ T6826] process_one_work+0x94c/0x1670 [ 58.603575][ T6826] ? lock_release+0x8d0/0x8d0 [ 58.608224][ T6826] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 58.613566][ T6826] ? rwlock_bug.part.0+0x90/0x90 [ 58.618519][ T6826] ? lockdep_hardirqs_off+0x66/0xa0 [ 58.623689][ T6826] worker_thread+0x64c/0x1120 [ 58.628348][ T6826] ? process_one_work+0x1670/0x1670 [ 58.633514][ T6826] kthread+0x3b5/0x4a0 [ 58.637551][ T6826] ? __kthread_bind_mask+0xc0/0xc0 [ 58.642630][ T6826] ? __kthread_bind_mask+0xc0/0xc0 [ 58.647710][ T6826] ret_from_fork+0x1f/0x30 [ 58.652094][ T6826] Modules linked in: [ 58.657958][ T6826] ---[ end trace b1383c5cd98b9653 ]--- [ 58.663638][ T6826] RIP: 0010:hci_phy_link_complete_evt.isra.0+0x23e/0x790 [ 58.670720][ T6826] Code: 48 c1 ea 03 80 3c 02 00 0f 85 3e 05 00 00 48 8b 9d 30 09 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 10 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 da 04 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b [ 58.690460][ T6826] RSP: 0018:ffffc900015e7a38 EFLAGS: 00010202 [ 58.696519][ T6826] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff871af0e3 [ 58.704528][ T6826] RDX: 0000000000000002 RSI: ffffffff871af0f0 RDI: 0000000000000010 [ 58.712737][ T6826] RBP: ffff888095602000 R08: 0000000000000001 R09: ffff888095768e48 [ 58.720936][ T6826] R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 [ 58.728978][ T6826] R13: ffff888096afd110 R14: ffff88809201a40b R15: 00000000000000c8 [ 58.736943][ T6826] FS: 0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 [ 58.746343][ T6826] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 58.752990][ T6826] CR2: 00007fe59cfd96c0 CR3: 0000000009a79000 CR4: 00000000001406e0 [ 58.761456][ T6826] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 58.769515][ T6826] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 58.777468][ T6826] Kernel panic - not syncing: Fatal exception [ 58.784681][ T6826] Kernel Offset: disabled [ 58.788991][ T6826] Rebooting in 86400 seconds..