general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 1 PID: 46 Comm: kworker/u5:0 Not tainted 5.16.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: hci0 hci_rx_work RIP: 0010:hci_inquiry_result_with_rssi_evt+0xa7/0x8b0 net/bluetooth/hci_event.c:4870 Code: 00 00 fc ff df 48 89 da 48 c1 ea 03 80 3c 02 00 0f 85 d5 06 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 2b 4c 89 ea 48 c1 ea 03 <0f> b6 04 02 4c 89 ea 83 e2 07 38 d0 7f 08 84 c0 0f 85 6d 06 00 00 RSP: 0018:ffffc9000116fad8 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff88801836400b RCX: 1ffff9200022df64 RDX: 0000000000000000 RSI: ffff88801836400b RDI: ffff888076b78000 RBP: ffff888076b78000 R08: 0000000000000104 R09: ffffc9000116fb07 R10: fffff5200022df60 R11: 0000000000000001 R12: ffff88807f391dc0 R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff87833c90 FS: 0000000000000000(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055700dd498b0 CR3: 000000006f2c1000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hci_event_func net/bluetooth/hci_event.c:7165 [inline] hci_event_packet+0x68e/0xcb0 net/bluetooth/hci_event.c:7213 hci_rx_work+0x3be/0xb80 net/bluetooth/hci_core.c:3811 process_one_work+0x87f/0x1450 kernel/workqueue.c:2298 worker_thread+0x598/0x1040 kernel/workqueue.c:2445 kthread+0x3ab/0x480 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Modules linked in: ---[ end trace 7b22f566a898a9a4 ]--- RIP: 0010:hci_inquiry_result_with_rssi_evt+0xa7/0x8b0 net/bluetooth/hci_event.c:4870 Code: 00 00 fc ff df 48 89 da 48 c1 ea 03 80 3c 02 00 0f 85 d5 06 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 2b 4c 89 ea 48 c1 ea 03 <0f> b6 04 02 4c 89 ea 83 e2 07 38 d0 7f 08 84 c0 0f 85 6d 06 00 00 RSP: 0018:ffffc9000116fad8 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff88801836400b RCX: 1ffff9200022df64 RDX: 0000000000000000 RSI: ffff88801836400b RDI: ffff888076b78000 RBP: ffff888076b78000 R08: 0000000000000104 R09: ffffc9000116fb07 R10: fffff5200022df60 R11: 0000000000000001 R12: ffff88807f391dc0 R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff87833c90 FS: 0000000000000000(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055700dd498b0 CR3: 000000006f2c1000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 5 bytes skipped: 0: 48 89 da mov %rbx,%rdx 3: 48 c1 ea 03 shr $0x3,%rdx 7: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) b: 0f 85 d5 06 00 00 jne 0x6e6 11: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 18: fc ff df 1b: 4c 8b 2b mov (%rbx),%r13 1e: 4c 89 ea mov %r13,%rdx 21: 48 c1 ea 03 shr $0x3,%rdx * 25: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax <-- trapping instruction 29: 4c 89 ea mov %r13,%rdx 2c: 83 e2 07 and $0x7,%edx 2f: 38 d0 cmp %dl,%al 31: 7f 08 jg 0x3b 33: 84 c0 test %al,%al 35: 0f 85 6d 06 00 00 jne 0x6a8