Bluetooth: hci4: Opcode 0x0c1a failed: -4 Bluetooth: hci4: Opcode 0x0406 failed: -4 Oops: general protection fault, probably for non-canonical address 0xdffffc0000000013: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000098-0x000000000000009f] CPU: 1 UID: 0 PID: 7577 Comm: syz.1.547 Tainted: G L syzkaller #0 PREEMP[ 243.730165][ T7577] CPU: 1 UID: 0 PID: 7577 Comm: syz.1.547 Tainted: G L syzkaller #0 PREEMPT_{RT,(full)} Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 RIP: 0010:klist_put lib/klist.c:212 [inline] RIP: 0010:klist_del lib/klist.c:230 [inline] RIP: 0010:klist_remove+0x159/0x340 lib/klist.c:249 Code: 49 c1 ed 03 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 ed a4 05 f7 4d 8b 26 49 83 e4 fe 49 8d bc 24 98 00 00 00 48 89 f8 48 c1 e8 03 <42> 80 3c 38 00 74 05 e8 cb a4 05 f7 49 8b 84 24 98 00 00 00 48 89 RSP: 0018:ffffc900046af080 EFLAGS: 00010202 RAX: 0000000000000013 RBX: ffff88802c26bd80 RCX: 0000000000000000 RDX: 0000000000000006 RSI: ffffffff8d76ae19 RDI: 0000000000000098 RBP: ffffc900046af178 R08: ffffffff8fac8af7 R09: 1ffffffff1f5915e R10: dffffc0000000000 R11: fffffbfff1f5915f R12: 0000000000000000 R13: 1ffff1100bb6ae94 R14: ffff88805db574a0 R15: dffffc0000000000 FS: 00007f8b9ee3e6c0(0000) GS:ffff888125dd3000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000020000002f030 CR3: 000000003d3ca000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000001800 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: device_move+0x193/0x740 drivers/base/core.c:4632 hci_conn_del_sysfs+0xb8/0x1a0 net/bluetooth/hci_sysfs.c:75 hci_conn_cleanup net/bluetooth/hci_conn.c:173 [inline] hci_conn_del+0xc36/0x1230 net/bluetooth/hci_conn.c:1307 hci_abort_conn_sync+0xdd0/0x1190 net/bluetooth/hci_sync.c:5763 hci_disconnect_all_sync+0x1b5/0x350 net/bluetooth/hci_sync.c:5786 hci_suspend_sync+0x417/0xd20 net/bluetooth/hci_sync.c:6262 hci_suspend_dev+0x28d/0x540 net/bluetooth/hci_core.c:2850 hci_suspend_notifier+0xf2/0x2f0 net/bluetooth/hci_core.c:2421 notifier_call_chain+0x1ad/0x3d0 kernel/notifier.c:85 notifier_call_chain_robust kernel/notifier.c:120 [inline] blocking_notifier_call_chain_robust+0x85/0x100 kernel/notifier.c:345 pm_notifier_call_chain_robust+0x2c/0x60 kernel/power/main.c:172 snapshot_open+0x1a2/0x290 kernel/power/user.c:77 misc_open+0x2de/0x350 drivers/char/misc.c:163 chrdev_open+0x4d0/0x5f0 fs/char_dev.c:411 do_dentry_open+0x83d/0x13e0 fs/open.c:947 vfs_open+0x3b/0x350 fs/open.c:1079 do_open fs/namei.c:4699 [inline] path_openat+0x2e43/0x38a0 fs/namei.c:4858 do_file_open+0x23e/0x4a0 fs/namei.c:4887 do_sys_openat2+0x113/0x200 fs/open.c:1364 do_sys_open fs/open.c:1370 [inline] __do_sys_openat fs/open.c:1386 [inline] __se_sys_openat fs/open.c:1381 [inline] __x64_sys_openat+0x138/0x170 fs/open.c:1381 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8ba0becdd9 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f8b9ee3e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f8ba0e65fa0 RCX: 00007f8ba0becdd9 RDX: 0000000000103000 RSI: 0000200000000140 RDI: ffffffffffffff9c RBP: 00007f8ba0c82d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f8ba0e66038 R14: 00007f8ba0e65fa0 R15: 00007ffedca0a608 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+0x159/0x340 lib/klist.c:249 Code: 49 c1 ed 03 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 ed a4 05 f7 4d 8b 26 49 83 e4 fe 49 8d bc 24 98 00 00 00 48 89 f8 48 c1 e8 03 <42> 80 3c 38 00 74 05 e8 cb a4 05 f7 49 8b 84 24 98 00 00 00 48 89 RSP: 0018:ffffc900046af080 EFLAGS: 00010202 RAX: 0000000000000013 RBX: ffff88802c26bd80 RCX: 0000000000000000 RDX: 0000000000000006 RSI: ffffffff8d76ae19 RDI: 0000000000000098 RBP: ffffc900046af178 R08: ffffffff8fac8af7 R09: 1ffffffff1f5915e R10: dffffc0000000000 R11: fffffbfff1f5915f R12: 0000000000000000 R13: 1ffff1100bb6ae94 R14: ffff88805db574a0 R15: dffffc0000000000 FS: 00007f8b9ee3e6c0(0000) GS:ffff888125dd3000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000037030 CR3: 000000003d3ca000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000001800 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 49 c1 ed 03 shr $0x3,%r13 4: 43 80 7c 3d 00 00 cmpb $0x0,0x0(%r13,%r15,1) a: 74 08 je 0x14 c: 4c 89 f7 mov %r14,%rdi f: e8 ed a4 05 f7 call 0xf705a501 14: 4d 8b 26 mov (%r14),%r12 17: 49 83 e4 fe and $0xfffffffffffffffe,%r12 1b: 49 8d bc 24 98 00 00 lea 0x98(%r12),%rdi 22: 00 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 cb a4 05 f7 call 0xf705a501 36: 49 8b 84 24 98 00 00 mov 0x98(%r12),%rax 3d: 00 3e: 48 rex.W 3f: 89 .byte 0x89