general protection fault, probably for non-canonical address 0xdffffc000000000b: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000058-0x000000000000005f] CPU: 1 PID: 19881 Comm: syz-executor Not tainted 6.1.127-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 RIP: 0010:klist_put lib/klist.c:212 [inline] RIP: 0010:klist_del lib/klist.c:230 [inline] RIP: 0010:klist_remove+0x1e2/0x460 lib/klist.c:249 Code: 80 3c 04 00 74 08 4c 89 ff e8 7a 85 3a f7 4d 8b 2f 49 83 e5 fe 49 8d 7d 58 48 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 05 e8 53 85 3a f7 4d 8b 75 58 4c 89 ef e8 97 91 15 RSP: 0018:ffffc900031d7420 EFLAGS: 00010202 RAX: 000000000000000b RBX: ffffffff8e83dca8 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058 RBP: ffffc900031d7508 R08: dffffc0000000000 R09: fffffbfff1d07b89 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1100b103a8c R13: 0000000000000000 R14: ffff888017f3bb80 R15: ffff88805881d460 FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f811e5e9370 CR3: 0000000077bbc000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 000000000000060c DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: device_move+0x1b0/0x700 drivers/base/core.c:4632 hci_conn_del_sysfs+0xa8/0x150 net/bluetooth/hci_sysfs.c:73 hci_conn_cleanup+0x5a0/0x740 net/bluetooth/hci_conn.c:172 hci_conn_del+0x417/0x6c0 net/bluetooth/hci_conn.c:1151 hci_conn_hash_flush+0x300/0x3f0 net/bluetooth/hci_conn.c:2510 hci_dev_close_sync+0x9a9/0xfc0 net/bluetooth/hci_sync.c:5178 hci_dev_do_close net/bluetooth/hci_core.c:509 [inline] hci_unregister_dev+0x207/0x500 net/bluetooth/hci_core.c:2706 vhci_release+0x7f/0xd0 drivers/bluetooth/hci_vhci.c:573 __fput+0x3f6/0x8d0 fs/file_table.c:320 task_work_run+0x246/0x300 kernel/task_work.c:203 exit_task_work include/linux/task_work.h:39 [inline] do_exit+0xa6e/0x26a0 kernel/exit.c:871 do_group_exit+0x202/0x2b0 kernel/exit.c:1021 get_signal+0x16f7/0x17d0 kernel/signal.c:2871 arch_do_signal_or_restart+0xb0/0x1a10 arch/x86/kernel/signal.c:871 exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:174 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline] syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f4bd4982f97 Code: Unable to access opcode bytes at 0x7f4bd4982f6d. RSP: 002b:00007ffd5b48cd20 EFLAGS: 00000293 ORIG_RAX: 000000000000003d RAX: fffffffffffffe00 RBX: 000000000000004e RCX: 00007f4bd4982f97 RDX: 0000000040000000 RSI: 00007ffd5b48cd7c RDI: 00000000ffffffff RBP: 00007ffd5b48cd7c R08: 0000000000000000 R09: 0000000000000010 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 0000555576e4e590 R14: 00007ffd5b48cdd0 R15: 0000000000000016 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:klist_put lib/klist.c:212 [inline] RIP: 0010:klist_del lib/klist.c:230 [inline] RIP: 0010:klist_remove+0x1e2/0x460 lib/klist.c:249 Code: 80 3c 04 00 74 08 4c 89 ff e8 7a 85 3a f7 4d 8b 2f 49 83 e5 fe 49 8d 7d 58 48 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 05 e8 53 85 3a f7 4d 8b 75 58 4c 89 ef e8 97 91 15 RSP: 0018:ffffc900031d7420 EFLAGS: 00010202 RAX: 000000000000000b RBX: ffffffff8e83dca8 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058 RBP: ffffc900031d7508 R08: dffffc0000000000 R09: fffffbfff1d07b89 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1100b103a8c R13: 0000000000000000 R14: ffff888017f3bb80 R15: ffff88805881d460 FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1c78470ff8 CR3: 000000003018b000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 00000000000005ff DR6: 00000000ffff0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 80 3c 04 00 cmpb $0x0,(%rsp,%rax,1) 4: 74 08 je 0xe 6: 4c 89 ff mov %r15,%rdi 9: e8 7a 85 3a f7 call 0xf73a8588 e: 4d 8b 2f mov (%r15),%r13 11: 49 83 e5 fe and $0xfffffffffffffffe,%r13 15: 49 8d 7d 58 lea 0x58(%r13),%rdi 19: 48 89 f8 mov %rdi,%rax 1c: 48 c1 e8 03 shr $0x3,%rax 20: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 27: fc ff df * 2a: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1) <-- trapping instruction 2e: 74 05 je 0x35 30: e8 53 85 3a f7 call 0xf73a8588 35: 4d 8b 75 58 mov 0x58(%r13),%r14 39: 4c 89 ef mov %r13,%rdi 3c: e8 .byte 0xe8 3d: 97 xchg %eax,%edi 3e: 91 xchg %eax,%ecx 3f: 15 .byte 0x15