BUG: unable to handle kernel NULL pointer dereference at 0000000000000030 PGD 95205067 P4D 95205067 PUD 9e06f067 PMD 0 Oops: 0002 [#1] PREEMPT SMP KASAN CPU: 1 PID: 1713 Comm: kworker/u5:0 Not tainted 4.19.162-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: hci4 hci_rx_work RIP: 0010:set_bit arch/x86/include/asm/bitops.h:71 [inline] RIP: 0010:amp_read_loc_assoc_final_data+0x102/0x1d0 net/bluetooth/amp.c:312 Code: fc ff df 0f b6 14 02 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 ae 00 00 00 41 0f b7 84 24 9c 03 00 00 66 89 44 24 23 41 80 4d 30 04 48 8d 6c 24 40 4c 89 e6 48 89 ef e8 08 35 fe ff RSP: 0018:ffff8880b25cf978 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 1ffff110164b9f2f RCX: 1ffff110164b8533 RDX: 0000000000000000 RSI: ffffffff8765aede RDI: ffff888057d1149c RBP: ffff8880a14a4e80 R08: 0000000000000000 R09: 0000000000000002 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888057d11100 R13: 0000000000000000 R14: ffff888057d12040 R15: ffff888057d11100 FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000030 CR3: 00000000af3c2000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hci_chan_selected_evt+0x1ef/0x3e0 net/bluetooth/hci_event.c:4655 hci_event_packet+0x2a4a/0x7e19 net/bluetooth/hci_event.c:5907 hci_rx_work+0x4ad/0xc70 net/bluetooth/hci_core.c:4359 process_one_work+0x864/0x1570 kernel/workqueue.c:2155 worker_thread+0x64c/0x1130 kernel/workqueue.c:2298 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Modules linked in: CR2: 0000000000000030 ---[ end trace d73c808f7d572570 ]--- RIP: 0010:set_bit arch/x86/include/asm/bitops.h:71 [inline] RIP: 0010:amp_read_loc_assoc_final_data+0x102/0x1d0 net/bluetooth/amp.c:312 Code: fc ff df 0f b6 14 02 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 ae 00 00 00 41 0f b7 84 24 9c 03 00 00 66 89 44 24 23 41 80 4d 30 04 48 8d 6c 24 40 4c 89 e6 48 89 ef e8 08 35 fe ff RSP: 0018:ffff8880b25cf978 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 1ffff110164b9f2f RCX: 1ffff110164b8533 RDX: 0000000000000000 RSI: ffffffff8765aede RDI: ffff888057d1149c RBP: ffff8880a14a4e80 R08: 0000000000000000 R09: 0000000000000002 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888057d11100 R13: 0000000000000000 R14: ffff888057d12040 R15: ffff888057d11100 FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000030 CR3: 00000000af3c2000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400