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: 6978 Comm: syz-executor Not tainted 5.15.174-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 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 f5 96 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 d6 96 93 fd 49 8b 44 24 58 48 89 44 24 10 RSP: 0018:ffffc9000328f960 EFLAGS: 00010202 RAX: 000000000000000b RBX: 1ffff1100c03030c RCX: 0000000000000001 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058 RBP: ffffc9000328fa48 R08: dffffc0000000000 R09: fffffbfff1a28a69 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: ffff888028199dc0 R14: dffffc0000000000 R15: ffff888060181860 FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000557996f5b950 CR3: 000000004d459000 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 __do_sys_exit_group kernel/exit.c:1007 [inline] __se_sys_exit_group kernel/exit.c:1005 [inline] __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1005 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f92b3f3fd19 Code: Unable to access opcode bytes at RIP 0x7f92b3f3fcef. RSP: 002b:00007ffc700bb4b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007f92b3fbb87e RCX: 00007f92b3f3fd19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000016 R08: 00007ffc700b9256 R09: 00007ffc700bc770 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc700bc770 R13: 00007f92b3fbb80c R14: 00005555652a84a8 R15: 0000000000000009 Modules linked in: ---[ end trace 6b2787734ae28f3c ]--- 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 f5 96 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 d6 96 93 fd 49 8b 44 24 58 48 89 44 24 10 RSP: 0018:ffffc9000328f960 EFLAGS: 00010202 RAX: 000000000000000b RBX: 1ffff1100c03030c RCX: 0000000000000001 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058 RBP: ffffc9000328fa48 R08: dffffc0000000000 R09: fffffbfff1a28a69 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: ffff888028199dc0 R14: dffffc0000000000 R15: ffff888060181860 FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fba224ebb00 CR3: 0000000062252000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- 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 f5 96 93 fd call 0xfd93970c 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 d6 96 93 fd call 0xfd93970c 36: 49 8b 44 24 58 mov 0x58(%r12),%rax 3b: 48 89 44 24 10 mov %rax,0x10(%rsp)