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: 7523 Comm: syz-executor Not tainted 5.15.186-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:klist_put lib/klist.c:212 [inline] RIP: 0010:klist_del lib/klist.c:230 [inline] RIP: 0010:klist_remove+0x144/0x2f0 lib/klist.c:249 Code: b6 05 4d 89 f4 49 c1 ec 03 43 80 3c 2c 00 74 08 4c 89 f7 e8 fe ad c0 fd 4d 8b 3e 49 83 e7 fe 49 8d 7f 58 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 05 e8 e0 ad c0 fd 49 8b 47 58 48 89 44 24 08 4c RSP: 0018:ffffc9000338f660 EFLAGS: 00010202 RAX: 000000000000000b RBX: ffff888024065940 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058 RBP: ffffc9000338f748 R08: dffffc0000000000 R09: fffffbfff18e70c1 R10: fffffbfff18e70c1 R11: 1ffffffff18e70c0 R12: 1ffff1100cdee98c R13: dffffc0000000000 R14: ffff888066f74c60 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcedd808440 CR3: 0000000023cb4000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 000000000000000e DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: device_move+0x18f/0x6f0 drivers/base/core.c:4338 hci_conn_del_sysfs+0xab/0x160 net/bluetooth/hci_sysfs.c:73 hci_conn_cleanup+0x4d1/0x680 net/bluetooth/hci_conn.c:140 hci_conn_del+0x2ab/0x3e0 net/bluetooth/hci_conn.c:678 hci_conn_hash_flush+0x185/0x220 net/bluetooth/hci_conn.c:1623 hci_dev_do_close+0x991/0x1030 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+0x234/0x930 fs/file_table.c:311 task_work_run+0x125/0x1a0 kernel/task_work.c:188 exit_task_work include/linux/task_work.h:33 [inline] do_exit+0x61e/0x20a0 kernel/exit.c:883 do_group_exit+0x12e/0x300 kernel/exit.c:997 get_signal+0x6ca/0x12c0 kernel/signal.c:2900 arch_do_signal_or_restart+0xc1/0x1300 arch/x86/kernel/signal.c:867 handle_signal_work kernel/entry/common.c:154 [inline] exit_to_user_mode_loop+0x9e/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+0x16/0x40 kernel/entry/common.c:307 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f8737c817bc Code: Unable to access opcode bytes at RIP 0x7f8737c81792. RSP: 002b:00007ffd20e3e730 EFLAGS: 00000293 ORIG_RAX: 000000000000002c RAX: 0000000000000020 RBX: 00007f87389d5620 RCX: 00007f8737c817bc RDX: 0000000000000020 RSI: 00007f87389d5670 RDI: 0000000000000005 RBP: 0000000000000000 R08: 00007ffd20e3e784 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000005 R13: 00007ffd20e3e7ec R14: 00007f87389d5670 R15: 0000000000000000 Modules linked in: ---[ end trace a1d184913a65a998 ]--- RIP: 0010:klist_put lib/klist.c:212 [inline] RIP: 0010:klist_del lib/klist.c:230 [inline] RIP: 0010:klist_remove+0x144/0x2f0 lib/klist.c:249 Code: b6 05 4d 89 f4 49 c1 ec 03 43 80 3c 2c 00 74 08 4c 89 f7 e8 fe ad c0 fd 4d 8b 3e 49 83 e7 fe 49 8d 7f 58 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 05 e8 e0 ad c0 fd 49 8b 47 58 48 89 44 24 08 4c RSP: 0018:ffffc9000338f660 EFLAGS: 00010202 RAX: 000000000000000b RBX: ffff888024065940 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058 RBP: ffffc9000338f748 R08: dffffc0000000000 R09: fffffbfff18e70c1 R10: fffffbfff18e70c1 R11: 1ffffffff18e70c0 R12: 1ffff1100cdee98c R13: dffffc0000000000 R14: ffff888066f74c60 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa29a542ab8 CR3: 000000001838c000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 000000000000000e DR6: 00000000ffff0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: b6 05 mov $0x5,%dh 2: 4d 89 f4 mov %r14,%r12 5: 49 c1 ec 03 shr $0x3,%r12 9: 43 80 3c 2c 00 cmpb $0x0,(%r12,%r13,1) e: 74 08 je 0x18 10: 4c 89 f7 mov %r14,%rdi 13: e8 fe ad c0 fd call 0xfdc0ae16 18: 4d 8b 3e mov (%r14),%r15 1b: 49 83 e7 fe and $0xfffffffffffffffe,%r15 1f: 49 8d 7f 58 lea 0x58(%r15),%rdi 23: 48 89 f8 mov %rdi,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) <-- trapping instruction 2f: 74 05 je 0x36 31: e8 e0 ad c0 fd call 0xfdc0ae16 36: 49 8b 47 58 mov 0x58(%r15),%rax 3a: 48 89 44 24 08 mov %rax,0x8(%rsp) 3f: 4c rex.WR