------------[ cut here ]------------
WARNING: CPU: 0 PID: 6680 at net/bluetooth/hci_conn.c:404 hci_conn_timeout.cold.5+0xc/0x13 net/bluetooth/hci_conn.c:404
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 6680 Comm: kworker/u5:5 Not tainted 4.19.155-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: hci5 hci_conn_timeout
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x17c/0x22a lib/dump_stack.c:118
 panic+0x1cd/0x375 kernel/panic.c:186
 __warn.cold.7+0x1b/0x3e kernel/panic.c:541
 report_bug+0x1a4/0x200 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 do_error_trap+0x200/0x350 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038
RIP: 0010:hci_conn_timeout.cold.5+0xc/0x13 net/bluetooth/hci_conn.c:404
Code: 89 55 d0 e8 3f d3 6e fb 48 8b 55 d0 e9 7e fe ff ff 4c 89 f7 e8 2e d3 6e fb e9 3e fe ff ff 48 c7 c7 a0 20 cd 87 e8 ad 64 2b fb <0f> 0b e9 bf 61 ff ff e8 a1 b9 6e fb 48 c7 c7 60 26 cd 87 e8 d5 48
------------[ cut here ]------------
RSP: 0018:ffff8880a253fd40 EFLAGS: 00010286
RAX: 0000000000000024 RBX: ffff8880959f23a0 RCX: 0000000000000000
------------[ cut here ]------------
RDX: 0000000000000000 RSI: ffffffff87677de0 RDI: ffffffff8a19da60
WARNING: CPU: 1 PID: 6683 at net/bluetooth/hci_conn.c:404 hci_conn_timeout.cold.5+0xc/0x13 net/bluetooth/hci_conn.c:404
RBP: ffff8880a253fd58 R08: ffffed10174c5081 R09: ffffed10174c5080
R10: ffffed10174c5080 R11: ffff8880ba628407 R12: ffff8880959f2280
Modules linked in:
R13: ffff8880b3661240 R14: ffff8880b108ac00 R15: ffff8880959f23a0
 process_one_work+0x7b9/0x15a0 kernel/workqueue.c:2155
CPU: 1 PID: 6683 Comm: kworker/u5:6 Not tainted 4.19.155-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: hci4 hci_conn_timeout
RIP: 0010:hci_conn_timeout.cold.5+0xc/0x13 net/bluetooth/hci_conn.c:404
Code: 89 55 d0 e8 3f d3 6e fb 48 8b 55 d0 e9 7e fe ff ff 4c 89 f7 e8 2e d3 6e fb e9 3e fe ff ff 48 c7 c7 a0 20 cd 87 e8 ad 64 2b fb <0f> 0b e9 bf 61 ff ff e8 a1 b9 6e fb 48 c7 c7 60 26 cd 87 e8 d5 48
 worker_thread+0x85/0xb60 kernel/workqueue.c:2298
RSP: 0018:ffff8880b3cb7d40 EFLAGS: 00010286
RAX: 0000000000000024 RBX: ffff8880959e0d20 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff87677de0 RDI: ffffffff8a19da60
 kthread+0x347/0x410 kernel/kthread.c:259
RBP: ffff8880b3cb7d58 R08: ffffed10174e5081 R09: ffffed10174e5080
R10: ffffed10174e5080 R11: ffff8880ba728407 R12: ffff8880959e0c00
R13: ffff8880b3661240 R14: ffff8880a7b18400 R15: ffff8880959e0d20
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
FS:  0000000000000000(0000) GS:ffff8880ba700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000747698 CR3: 00000000aafca000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 process_one_work+0x7b9/0x15a0 kernel/workqueue.c:2155
 worker_thread+0x85/0xb60 kernel/workqueue.c:2298
 kthread+0x347/0x410 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
irq event stamp: 456796
hardirqs last  enabled at (456795): [<ffffffff86da15f7>] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline]
hardirqs last  enabled at (456795): [<ffffffff86da15f7>] _raw_spin_unlock_irq+0x27/0x90 kernel/locking/spinlock.c:192
hardirqs last disabled at (456796): [<ffffffff810056f1>] trace_hardirqs_off_thunk+0x1a/0x1c
softirqs last  enabled at (456792): [<ffffffff87000643>] __do_softirq+0x643/0x92d kernel/softirq.c:318
softirqs last disabled at (456727): [<ffffffff813a385f>] invoke_softirq kernel/softirq.c:372 [inline]
softirqs last disabled at (456727): [<ffffffff813a385f>] irq_exit+0x17f/0x1c0 kernel/softirq.c:412
---[ end trace fbbdcffad8b51399 ]---
Kernel Offset: disabled
Rebooting in 86400 seconds..