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: 5842 Comm: syz-executor Not tainted 6.14.0-syzkaller-05877-g1a9239bb4253 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:klist_put lib/klist.c:212 [inline] RIP: 0010:klist_del lib/klist.c:230 [inline] RIP: 0010:klist_remove+0x1ea/0x480 lib/klist.c:249 Code: 3c 06 00 74 08 4c 89 ff e8 63 0f 12 f6 4d 8b 27 49 83 e4 fe 49 8d 7c 24 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 3b 0f 12 f6 4d 8b 6c 24 58 4c 89 e7 e8 1e 3f RSP: 0018:ffffc9000413f5c0 EFLAGS: 00010202 RAX: 000000000000000b RBX: ffffffff9044db48 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058 RBP: ffffc9000413f6a8 R08: ffffffff9044dae3 R09: 1ffffffff2089b5c R10: dffffc0000000000 R11: fffffbfff2089b5d R12: 0000000000000000 R13: ffffffff9044db40 R14: 1ffff1100f7afd0c R15: ffff88807bd7e860 FS: 0000000000000000(0000) GS:ffff8881250ea000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd5008d7d60 CR3: 00000000350ba000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: device_move+0x1b4/0x710 drivers/base/core.c:4592 hci_conn_del_sysfs+0xb5/0x170 net/bluetooth/hci_sysfs.c:75 hci_conn_cleanup net/bluetooth/hci_conn.c:175 [inline] hci_conn_del+0x8d5/0xc50 net/bluetooth/hci_conn.c:1167 hci_conn_hash_flush+0x18e/0x240 net/bluetooth/hci_conn.c:2702 hci_dev_close_sync+0xa8d/0x1260 net/bluetooth/hci_sync.c:5225 hci_dev_do_close net/bluetooth/hci_core.c:483 [inline] hci_unregister_dev+0x20b/0x510 net/bluetooth/hci_core.c:2678 vhci_release+0x80/0xd0 drivers/bluetooth/hci_vhci.c:665 __fput+0x3e9/0x9f0 fs/file_table.c:465 task_work_run+0x251/0x310 kernel/task_work.c:227 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0xa2a/0x2940 kernel/exit.c:954 do_group_exit+0x207/0x2c0 kernel/exit.c:1103 get_signal+0x1696/0x1730 kernel/signal.c:3035 arch_do_signal_or_restart+0x98/0x840 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0xce/0x340 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f3dce1bfa25 Code: Unable to access opcode bytes at 0x7f3dce1bf9fb. RSP: 002b:00007ffe369ff8b0 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6 RAX: 0000000000000000 RBX: 0000000000000382 RCX: 00007f3dce1bfa25 RDX: 00007ffe369ff8f0 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007ffe369ff95c R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000001388 R13: 00000000000927c0 R14: 00000000000314dd R15: 00007ffe369ff9b0 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+0x1ea/0x480 lib/klist.c:249 Code: 3c 06 00 74 08 4c 89 ff e8 63 0f 12 f6 4d 8b 27 49 83 e4 fe 49 8d 7c 24 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 3b 0f 12 f6 4d 8b 6c 24 58 4c 89 e7 e8 1e 3f RSP: 0018:ffffc9000413f5c0 EFLAGS: 00010202 RAX: 000000000000000b RBX: ffffffff9044db48 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000058 RBP: ffffc9000413f6a8 R08: ffffffff9044dae3 R09: 1ffffffff2089b5c R10: dffffc0000000000 R11: fffffbfff2089b5d R12: 0000000000000000 R13: ffffffff9044db40 R14: 1ffff1100f7afd0c R15: ffff88807bd7e860 FS: 0000000000000000(0000) GS:ffff8881250ea000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd5008d7d60 CR3: 0000000035300000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 3c 06 cmp $0x6,%al 2: 00 74 08 4c add %dh,0x4c(%rax,%rcx,1) 6: 89 ff mov %edi,%edi 8: e8 63 0f 12 f6 call 0xf6120f70 d: 4d 8b 27 mov (%r15),%r12 10: 49 83 e4 fe and $0xfffffffffffffffe,%r12 14: 49 8d 7c 24 58 lea 0x58(%r12),%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 3b 0f 12 f6 call 0xf6120f70 35: 4d 8b 6c 24 58 mov 0x58(%r12),%r13 3a: 4c 89 e7 mov %r12,%rdi 3d: e8 .byte 0xe8 3e: 1e (bad) 3f: 3f (bad)