general protection fault, probably for non-canonical address 0xdffffc000000800a: 0000 [#1] PREEMPT SMP KASAN
KASAN: probably user-memory-access in range [0x0000000000040050-0x0000000000040057]
CPU: 0 PID: 10108 Comm: syz-executor.2 Not tainted 6.2.0-rc6-next-20230203-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
RIP: 0010:__hlist_del include/linux/list.h:901 [inline]
RIP: 0010:hlist_del include/linux/list.h:913 [inline]
RIP: 0010:__alloc_object lib/debugobjects.c:213 [inline]
RIP: 0010:alloc_object lib/debugobjects.c:230 [inline]
RIP: 0010:__debug_object_init+0x21f/0xf10 lib/debugobjects.c:577
Code: c1 ef 03 80 3c 37 00 0f 85 34 0a 00 00 48 85 c0 48 89 01 74 24 48 8d 78 08 48 be 00 00 00 00 00 fc ff df 49 89 fa 49 c1 ea 03 <41> 80 3c 32 00 0f 85 e4 09 00 00 48 89 48 08 48 b8 00 01 00 00 00
RSP: 0018:ffffc9001619f878 EFLAGS: 00010006
RAX: 0000000000040048 RBX: 00000000000aede0 RCX: ffff8880b9838c00
RDX: ffff8880b9838c00 RSI: dffffc0000000000 RDI: 0000000000040050
RBP: ffff88808844b930 R08: 0000000000000001 R09: 0000000000000003
R10: 000000000000800a R11: 0000000000000000 R12: 1ffff92002c33f1d
R13: ffff88802b8b4480 R14: ffffffff91eef828 R15: ffffffff91eef820
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa18d1a8000 CR3: 000000002a22b000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 debug_object_init lib/debugobjects.c:624 [inline]
 debug_object_activate+0x330/0x3e0 lib/debugobjects.c:710
 debug_rcu_head_queue kernel/rcu/rcu.h:226 [inline]
 __call_rcu_common.constprop.0+0x2c/0x7d0 kernel/rcu/tree.c:2610
 __change_pid+0x1c1/0x2d0 kernel/pid.c:353
 __unhash_process kernel/exit.c:125 [inline]
 __exit_signal kernel/exit.c:198 [inline]
 release_task+0x9e3/0x1870 kernel/exit.c:255
 exit_notify kernel/exit.c:761 [inline]
 do_exit+0x1516/0x2b60 kernel/exit.c:889
 do_group_exit+0xd4/0x2a0 kernel/exit.c:1019
 get_signal+0x2321/0x25b0 kernel/signal.c:2859
 arch_do_signal_or_restart+0x79/0x5c0 arch/x86/kernel/signal.c:306
 exit_to_user_mode_loop kernel/entry/common.c:168 [inline]
 exit_to_user_mode_prepare+0x11f/0x240 kernel/entry/common.c:204
 __syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
 syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:297
 ret_from_fork+0x15/0x30 arch/x86/entry/entry_64.S:301
RIP: 0033:0x7fc0a7c8d4f1
Code: Unable to access opcode bytes at 0x7fc0a7c8d4c7.
RSP: 002b:00007fc0a897f2f0 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: 0000000000000000 RBX: 00007fc0a897f700 RCX: 00007fc0a7c8d4f1
RDX: 00007fc0a897f9d0 RSI: 00007fc0a897f2f0 RDI: 00000000003d0f00
RBP: 00007ffe355e4ce0 R08: 00007fc0a897f700 R09: 00007fc0a897f700
R10: 00007fc0a897f9d0 R11: 0000000000000206 R12: 00007ffe355e4b4e
R13: 00007ffe355e4b4f R14: 00007fc0a897f300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__hlist_del include/linux/list.h:901 [inline]
RIP: 0010:hlist_del include/linux/list.h:913 [inline]
RIP: 0010:__alloc_object lib/debugobjects.c:213 [inline]
RIP: 0010:alloc_object lib/debugobjects.c:230 [inline]
RIP: 0010:__debug_object_init+0x21f/0xf10 lib/debugobjects.c:577
Code: c1 ef 03 80 3c 37 00 0f 85 34 0a 00 00 48 85 c0 48 89 01 74 24 48 8d 78 08 48 be 00 00 00 00 00 fc ff df 49 89 fa 49 c1 ea 03 <41> 80 3c 32 00 0f 85 e4 09 00 00 48 89 48 08 48 b8 00 01 00 00 00
RSP: 0018:ffffc9001619f878 EFLAGS: 00010006
RAX: 0000000000040048 RBX: 00000000000aede0 RCX: ffff8880b9838c00
RDX: ffff8880b9838c00 RSI: dffffc0000000000 RDI: 0000000000040050
RBP: ffff88808844b930 R08: 0000000000000001 R09: 0000000000000003
R10: 000000000000800a R11: 0000000000000000 R12: 1ffff92002c33f1d
R13: ffff88802b8b4480 R14: ffffffff91eef828 R15: ffffffff91eef820
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa18d1a8000 CR3: 000000002a22b000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	c1 ef 03             	shr    $0x3,%edi
   3:	80 3c 37 00          	cmpb   $0x0,(%rdi,%rsi,1)
   7:	0f 85 34 0a 00 00    	jne    0xa41
   d:	48 85 c0             	test   %rax,%rax
  10:	48 89 01             	mov    %rax,(%rcx)
  13:	74 24                	je     0x39
  15:	48 8d 78 08          	lea    0x8(%rax),%rdi
  19:	48 be 00 00 00 00 00 	movabs $0xdffffc0000000000,%rsi
  20:	fc ff df
  23:	49 89 fa             	mov    %rdi,%r10
  26:	49 c1 ea 03          	shr    $0x3,%r10
* 2a:	41 80 3c 32 00       	cmpb   $0x0,(%r10,%rsi,1) <-- trapping instruction
  2f:	0f 85 e4 09 00 00    	jne    0xa19
  35:	48 89 48 08          	mov    %rcx,0x8(%rax)
  39:	48                   	rex.W
  3a:	b8 00 01 00 00       	mov    $0x100,%eax