Oops: general protection fault, probably for non-canonical address 0xdffffc000000000b: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000058-0x000000000000005f] CPU: 1 UID: 0 PID: 14028 Comm: syz.5.3000 Not tainted 6.17.0-rc2-next-20250818-syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:klist_put lib/klist.c:212 [inline] RIP: 0010:klist_del lib/klist.c:230 [inline] RIP: 0010:klist_remove+0x14a/0x340 lib/klist.c:249 Code: 4d 89 f5 49 c1 ed 03 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 49 d8 b0 f6 4d 8b 26 49 83 e4 fe 49 8d 7c 24 58 48 89 f8 48 c1 e8 03 <42> 80 3c 38 00 74 05 e8 2a d8 b0 f6 49 8b 44 24 58 48 89 44 24 08 RSP: 0018:ffffc9000b4f75e0 EFLAGS: 00010202 RAX: 000000000000000b RBX: ffff8880529d8000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058 RBP: ffffc9000b4f76e0 R08: ffffffff8faa4283 R09: 1ffffffff1f54850 R10: dffffc0000000000 R11: fffffbfff1f54851 R12: 0000000000000000 R13: 1ffff1100649438c R14: ffff8880324a1c60 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff888125b0b000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2f120ff8 CR3: 000000007e246000 CR4: 00000000003526f0 Call Trace: device_move+0x193/0x700 drivers/base/core.c:4615 hci_conn_del_sysfs+0xb8/0x170 net/bluetooth/hci_sysfs.c:75 hci_conn_cleanup net/bluetooth/hci_conn.c:173 [inline] hci_conn_del+0xc33/0x11b0 net/bluetooth/hci_conn.c:1210 hci_conn_hash_flush+0x191/0x230 net/bluetooth/hci_conn.c:2603 hci_dev_close_sync+0xaef/0x1330 net/bluetooth/hci_sync.c:5294 hci_dev_do_close net/bluetooth/hci_core.c:501 [inline] hci_unregister_dev+0x21a/0x510 net/bluetooth/hci_core.c:2715 vhci_release+0x80/0xd0 drivers/bluetooth/hci_vhci.c:665 __fput+0x44c/0xa70 fs/file_table.c:468 task_work_run+0x1d4/0x260 kernel/task_work.c:227 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0x6b5/0x2300 kernel/exit.c:961 do_group_exit+0x21c/0x2d0 kernel/exit.c:1102 get_signal+0x1286/0x1340 kernel/signal.c:3034 arch_do_signal_or_restart+0x9a/0x750 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop+0x75/0x130 kernel/entry/common.c:40 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline] syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline] do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdd0b5c14a5 Code: Unable to access opcode bytes at 0x7fdd0b5c147b. RSP: 002b:00007fdd0c4bff80 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6 RAX: fffffffffffffdfc RBX: 00007fdd0b7b5fa0 RCX: 00007fdd0b5c14a5 RDX: 00007fdd0c4bffc0 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007fdd0b611e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 00007fdd0b7b6038 R14: 00007fdd0b7b5fa0 R15: 00007fff131dfc98 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+0x14a/0x340 lib/klist.c:249 Code: 4d 89 f5 49 c1 ed 03 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 49 d8 b0 f6 4d 8b 26 49 83 e4 fe 49 8d 7c 24 58 48 89 f8 48 c1 e8 03 <42> 80 3c 38 00 74 05 e8 2a d8 b0 f6 49 8b 44 24 58 48 89 44 24 08 RSP: 0018:ffffc9000b4f75e0 EFLAGS: 00010202 RAX: 000000000000000b RBX: ffff8880529d8000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058 RBP: ffffc9000b4f76e0 R08: ffffffff8faa4283 R09: 1ffffffff1f54850 R10: dffffc0000000000 R11: fffffbfff1f54851 R12: 0000000000000000 R13: 1ffff1100649438c R14: ffff8880324a1c60 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff888125a0b000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b3301cff8 CR3: 0000000024776000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess): 0: 4d 89 f5 mov %r14,%r13 3: 49 c1 ed 03 shr $0x3,%r13 7: 43 80 7c 3d 00 00 cmpb $0x0,0x0(%r13,%r15,1) d: 74 08 je 0x17 f: 4c 89 f7 mov %r14,%rdi 12: e8 49 d8 b0 f6 call 0xf6b0d860 17: 4d 8b 26 mov (%r14),%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 38 00 cmpb $0x0,(%rax,%r15,1) <-- trapping instruction 2f: 74 05 je 0x36 31: e8 2a d8 b0 f6 call 0xf6b0d860 36: 49 8b 44 24 58 mov 0x58(%r12),%rax 3b: 48 89 44 24 08 mov %rax,0x8(%rsp)