Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 0 UID: 0 PID: 12870 Comm: syz.0.1581 Not tainted 6.14.0-rc2-next-20250213-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:skb_queue_empty_lockless include/linux/skbuff.h:1887 [inline]
RIP: 0010:skb_queue_purge_reason+0xaa/0x500 net/core/skbuff.c:3843
Code: 89 44 24 78 42 c6 44 30 13 f3 e8 71 4b f8 f7 48 8d bc 24 b0 00 00 00 ba 48 00 00 00 31 f6 e8 dd e9 5f f8 4d 89 ef 49 c1 ef 03 <43> 80 3c 37 00 74 08 4c 89 ef e8 f7 e6 5f f8 49 8b 45 00 4c 39 e8
RSP: 0018:ffffc9000c4f7600 EFLAGS: 00010202
RAX: ffffc9000c4f76b0 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc9000c4f76f8
RBP: ffffc9000c4f7770 R08: ffffc9000c4f76f7 R09: 0000000000000000
R10: ffffc9000c4f76b0 R11: fffff5200189eedf R12: dffffc0000000000
R13: 0000000000000008 R14: dffffc0000000000 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005570e1c85680 CR3: 0000000064a20000 CR4: 00000000003526f0
DR0: 0000000000000008 DR1: 0000000000003609 DR2: 00000000000002a3
DR3: 0000000000000081 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 skb_queue_purge include/linux/skbuff.h:3364 [inline]
 h4_close+0x55/0xd0 drivers/bluetooth/hci_h4.c:76
 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/0x2860 kernel/exit.c:952
 do_group_exit+0x207/0x2c0 kernel/exit.c:1101
 get_signal+0x168c/0x1720 kernel/signal.c:3036
 arch_do_signal_or_restart+0x96/0x860 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/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe65138cde9
Code: Unable to access opcode bytes at 0x7fe65138cdbf.
RSP: 002b:00007fe6522230e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fe6515a6168 RCX: 00007fe65138cde9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fe6515a6168
RBP: 00007fe6515a6160 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe6515a616c
R13: 0000000000000000 R14: 00007fff2e7fa1f0 R15: 00007fff2e7fa2d8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:skb_queue_empty_lockless include/linux/skbuff.h:1887 [inline]
RIP: 0010:skb_queue_purge_reason+0xaa/0x500 net/core/skbuff.c:3843
Code: 89 44 24 78 42 c6 44 30 13 f3 e8 71 4b f8 f7 48 8d bc 24 b0 00 00 00 ba 48 00 00 00 31 f6 e8 dd e9 5f f8 4d 89 ef 49 c1 ef 03 <43> 80 3c 37 00 74 08 4c 89 ef e8 f7 e6 5f f8 49 8b 45 00 4c 39 e8
RSP: 0018:ffffc9000c4f7600 EFLAGS: 00010202
RAX: ffffc9000c4f76b0 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc9000c4f76f8
RBP: ffffc9000c4f7770 R08: ffffc9000c4f76f7 R09: 0000000000000000
R10: ffffc9000c4f76b0 R11: fffff5200189eedf R12: dffffc0000000000
R13: 0000000000000008 R14: dffffc0000000000 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3050aff8 CR3: 0000000064a20000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	89 44 24 78          	mov    %eax,0x78(%rsp)
   4:	42 c6 44 30 13 f3    	movb   $0xf3,0x13(%rax,%r14,1)
   a:	e8 71 4b f8 f7       	call   0xf7f84b80
   f:	48 8d bc 24 b0 00 00 	lea    0xb0(%rsp),%rdi
  16:	00
  17:	ba 48 00 00 00       	mov    $0x48,%edx
  1c:	31 f6                	xor    %esi,%esi
  1e:	e8 dd e9 5f f8       	call   0xf85fea00
  23:	4d 89 ef             	mov    %r13,%r15
  26:	49 c1 ef 03          	shr    $0x3,%r15
* 2a:	43 80 3c 37 00       	cmpb   $0x0,(%r15,%r14,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	4c 89 ef             	mov    %r13,%rdi
  34:	e8 f7 e6 5f f8       	call   0xf85fe730
  39:	49 8b 45 00          	mov    0x0(%r13),%rax
  3d:	4c 39 e8             	cmp    %r13,%rax