general protection fault, probably for non-canonical address 0xdffffc000000000b: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000058-0x000000000000005f] CPU: 0 PID: 4174 Comm: syz-executor Not tainted 5.15.178-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+0x1ae/0x390 lib/klist.c:249 Code: 08 4c 89 fb 48 c1 eb 03 42 80 3c 33 00 74 08 4c 89 ff e8 d5 8c 93 fd 4d 8b 27 49 83 e4 fe 49 8d 7c 24 58 48 89 f8 48 c1 e8 03 <42> 80 3c 30 00 74 05 e8 b6 8c 93 fd 49 8b 44 24 58 48 89 44 24 10 RSP: 0018:ffffc90002f4f620 EFLAGS: 00010202 RAX: 000000000000000b RBX: 1ffff1100c263d8c RCX: 0000000000000001 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058 RBP: ffffc90002f4f708 R08: dffffc0000000000 R09: fffffbfff1a28b01 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: ffff88807d209dc0 R14: dffffc0000000000 R15: ffff88806131ec60 FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9ab2b5fae0 CR3: 0000000025856000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: device_move+0x1b0/0x700 drivers/base/core.c:4338 hci_conn_del_sysfs+0xa8/0x150 net/bluetooth/hci_sysfs.c:73 hci_conn_cleanup+0x4d2/0x670 net/bluetooth/hci_conn.c:140 hci_conn_del+0x2b8/0x3d0 net/bluetooth/hci_conn.c:678 hci_conn_hash_flush+0x194/0x220 net/bluetooth/hci_conn.c:1623 hci_dev_do_close+0x9f6/0x1070 net/bluetooth/hci_core.c:1795 hci_unregister_dev+0x2d7/0x580 net/bluetooth/hci_core.c:4040 vhci_release+0x73/0xc0 drivers/bluetooth/hci_vhci.c:345 __fput+0x3fe/0x8e0 fs/file_table.c:280 task_work_run+0x129/0x1a0 kernel/task_work.c:188 exit_task_work include/linux/task_work.h:33 [inline] do_exit+0x6a3/0x2480 kernel/exit.c:874 do_group_exit+0x144/0x310 kernel/exit.c:996 get_signal+0xc66/0x14e0 kernel/signal.c:2900 arch_do_signal_or_restart+0xc3/0x1890 arch/x86/kernel/signal.c:867 handle_signal_work kernel/entry/common.c:154 [inline] exit_to_user_mode_loop+0x97/0x130 kernel/entry/common.c:178 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline] syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f53f906a7fc Code: Unable to access opcode bytes at RIP 0x7f53f906a7d2. RSP: 002b:00007ffe1c7a7340 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: fffffffffffffe00 RBX: 00000000ffffffff RCX: 00007f53f906a7fc RDX: 0000000000000030 RSI: 00007ffe1c7a7400 RDI: 00000000000000f9 RBP: 00007ffe1c7a73ac R08: 0000000000000000 R09: 0079746972756365 R10: 00007f53f92587e0 R11: 0000000000000246 R12: 000000000000026b R13: 00000000000927c0 R14: 00000000000e074d R15: 00007ffe1c7a7400 Modules linked in: ---[ end trace ef8502e2b008fbbb ]--- RIP: 0010:klist_put lib/klist.c:212 [inline] RIP: 0010:klist_del lib/klist.c:230 [inline] RIP: 0010:klist_remove+0x1ae/0x390 lib/klist.c:249 Code: 08 4c 89 fb 48 c1 eb 03 42 80 3c 33 00 74 08 4c 89 ff e8 d5 8c 93 fd 4d 8b 27 49 83 e4 fe 49 8d 7c 24 58 48 89 f8 48 c1 e8 03 <42> 80 3c 30 00 74 05 e8 b6 8c 93 fd 49 8b 44 24 58 48 89 44 24 10 RSP: 0018:ffffc90002f4f620 EFLAGS: 00010202 RAX: 000000000000000b RBX: 1ffff1100c263d8c RCX: 0000000000000001 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058 RBP: ffffc90002f4f708 R08: dffffc0000000000 R09: fffffbfff1a28b01 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: ffff88807d209dc0 R14: dffffc0000000000 R15: ffff88806131ec60 FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f09e39b3440 CR3: 000000000c88e000 CR4: 00000000003506e0 ---------------- Code disassembly (best guess): 0: 08 4c 89 fb or %cl,-0x5(%rcx,%rcx,4) 4: 48 c1 eb 03 shr $0x3,%rbx 8: 42 80 3c 33 00 cmpb $0x0,(%rbx,%r14,1) d: 74 08 je 0x17 f: 4c 89 ff mov %r15,%rdi 12: e8 d5 8c 93 fd call 0xfd938cec 17: 4d 8b 27 mov (%r15),%r12 1a: 49 83 e4 fe and $0xfffffffffffffffe,%r12 1e: 49 8d 7c 24 58 lea 0x58(%r12),%rdi 23: 48 89 f8 mov %rdi,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1) <-- trapping instruction 2f: 74 05 je 0x36 31: e8 b6 8c 93 fd call 0xfd938cec 36: 49 8b 44 24 58 mov 0x58(%r12),%rax 3b: 48 89 44 24 10 mov %rax,0x10(%rsp)