RBP: 0000000000000001 R08: 00007ffc7edb2f27 R09: 00007f480fadc1a8 R10: 0000000000000001 R11: 0000000000000246 R12: 00007ffc7edb31ac R13: 00007ffc7edb31f0 R14: 00007ffc7edb31d0 R15: 0000000000000006 Bluetooth: Can't allocate HCI device Oops: general protection fault, probably for non-canonical address 0xdffffc0000000029: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000148-0x000000000000014f] CPU: 1 UID: 0 PID: 5841 Comm: syz-executor260 Not tainted 6.14.0-rc3-next-20250218-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 RIP: 0010:__lock_acquire+0x6a/0x2100 kernel/locking/lockdep.c:5091 Code: b6 04 30 84 c0 0f 85 f8 16 00 00 45 31 f6 83 3d 2b c3 a0 0e 00 0f 84 c8 13 00 00 89 54 24 60 89 5c 24 38 4c 89 f8 48 c1 e8 03 <80> 3c 30 00 74 12 4c 89 ff e8 58 6c 8c 00 48 be 00 00 00 00 00 fc RSP: 0018:ffffc900042bf6d0 EFLAGS: 00010002 RAX: 0000000000000029 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: dffffc0000000000 RDI: 0000000000000148 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000001 R10: dffffc0000000000 R11: fffffbfff207b48f R12: ffff88805040bc00 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000148 FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f480fb76243 CR3: 000000000e938000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851 __timer_delete_sync+0x148/0x310 kernel/time/timer.c:1644 bcsp_close+0x4c/0x130 drivers/bluetooth/hci_bcsp.c:740 hci_uart_tty_close+0x205/0x290 drivers/bluetooth/hci_ldisc.c:557 tty_ldisc_kill+0xa3/0x1a0 drivers/tty/tty_ldisc.c:613 tty_ldisc_release+0x1a1/0x200 drivers/tty/tty_ldisc.c:781 tty_release_struct+0x2b/0xe0 drivers/tty/tty_io.c:1690 tty_release+0xd06/0x12c0 drivers/tty/tty_io.c:1861 __fput+0x3e9/0x9f0 fs/file_table.c:464 task_work_run+0x24f/0x310 kernel/task_work.c:227 exit_task_work include/linux/task_work.h:40 [inline] do_exit+0xa2a/0x28e0 kernel/exit.c:952 do_group_exit+0x207/0x2c0 kernel/exit.c:1101 __do_sys_exit_group kernel/exit.c:1112 [inline] __se_sys_exit_group kernel/exit.c:1110 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1110 x64_sys_call+0x26c3/0x26d0 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f480fb1eb79 Code: Unable to access opcode bytes at 0x7f480fb1eb4f. RSP: 002b:00007ffc7edb3128 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f480fb1eb79 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 RBP: 00007f480fb92350 R08: ffffffffffffffb8 R09: 00007f480fadc1a8 R10: 0000000000000001 R11: 0000000000000246 R12: 00007f480fb92350 R13: 0000000000000000 R14: 00007f480fb92da0 R15: 00007f480fae8220 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__lock_acquire+0x6a/0x2100 kernel/locking/lockdep.c:5091 Code: b6 04 30 84 c0 0f 85 f8 16 00 00 45 31 f6 83 3d 2b c3 a0 0e 00 0f 84 c8 13 00 00 89 54 24 60 89 5c 24 38 4c 89 f8 48 c1 e8 03 <80> 3c 30 00 74 12 4c 89 ff e8 58 6c 8c 00 48 be 00 00 00 00 00 fc RSP: 0018:ffffc900042bf6d0 EFLAGS: 00010002 RAX: 0000000000000029 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: dffffc0000000000 RDI: 0000000000000148 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000001 R10: dffffc0000000000 R11: fffffbfff207b48f R12: ffff88805040bc00 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000148 FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f480fb76243 CR3: 000000000e938000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: b6 04 mov $0x4,%dh 2: 30 84 c0 0f 85 f8 16 xor %al,0x16f8850f(%rax,%rax,8) 9: 00 00 add %al,(%rax) b: 45 31 f6 xor %r14d,%r14d e: 83 3d 2b c3 a0 0e 00 cmpl $0x0,0xea0c32b(%rip) # 0xea0c340 15: 0f 84 c8 13 00 00 je 0x13e3 1b: 89 54 24 60 mov %edx,0x60(%rsp) 1f: 89 5c 24 38 mov %ebx,0x38(%rsp) 23: 4c 89 f8 mov %r15,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 80 3c 30 00 cmpb $0x0,(%rax,%rsi,1) <-- trapping instruction 2e: 74 12 je 0x42 30: 4c 89 ff mov %r15,%rdi 33: e8 58 6c 8c 00 call 0x8c6c90 38: 48 rex.W 39: be 00 00 00 00 mov $0x0,%esi 3e: 00 fc add %bh,%ah