general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 PID: 21959 Comm: kworker/0:12 Not tainted 5.16.0-rc2-next-20211125-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: krxrpcd rxrpc_local_processor
RIP: 0010:____rb_erase_color lib/rbtree.c:354 [inline]
RIP: 0010:rb_erase+0x3b0/0x1210 lib/rbtree.c:445
Code: 89 ed 48 89 c5 e9 fe fe ff ff 48 8d 7d 10 48 89 f8 48 c1 e8 03 80 3c 18 00 0f 85 51 0d 00 00 4c 8b 65 10 4c 89 e0 48 c1 e8 03 <80> 3c 18 00 0f 85 4e 0d 00 00 4d 8b 34 24 49 8d 7c 24 08 48 89 f8
RSP: 0018:ffffc90003867b78 EFLAGS: 00010246
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: ffffed100f23533a RSI: ffff8880791a99d0 RDI: ffff88814793c080
RBP: ffff88814793c070 R08: 0000000000000004 R09: 0000000000000000
R10: ffffffff885702a6 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880791a99d0
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f63b6951e70 CR3: 000000000b88e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 rxrpc_unbundle_conn+0x399/0x430 net/rxrpc/conn_client.c:927
 rxrpc_clean_up_local_conns+0x38d/0x590 net/rxrpc/conn_client.c:1112
 rxrpc_local_destroyer net/rxrpc/local_object.c:377 [inline]
 rxrpc_local_processor+0x38d/0x5e0 net/rxrpc/local_object.c:411
 process_one_work+0x9b2/0x1690 kernel/workqueue.c:2299
 worker_thread+0x658/0x11f0 kernel/workqueue.c:2446
 kthread+0x405/0x4f0 kernel/kthread.c:345
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
Modules linked in:
---[ end trace 0cf3e2b612db020f ]---
RIP: 0010:____rb_erase_color lib/rbtree.c:354 [inline]
RIP: 0010:rb_erase+0x3b0/0x1210 lib/rbtree.c:445
Code: 89 ed 48 89 c5 e9 fe fe ff ff 48 8d 7d 10 48 89 f8 48 c1 e8 03 80 3c 18 00 0f 85 51 0d 00 00 4c 8b 65 10 4c 89 e0 48 c1 e8 03 <80> 3c 18 00 0f 85 4e 0d 00 00 4d 8b 34 24 49 8d 7c 24 08 48 89 f8
RSP: 0018:ffffc90003867b78 EFLAGS: 00010246
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: ffffed100f23533a RSI: ffff8880791a99d0 RDI: ffff88814793c080
RBP: ffff88814793c070 R08: 0000000000000004 R09: 0000000000000000
R10: ffffffff885702a6 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880791a99d0
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f63b6951e70 CR3: 000000000b88e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	89 ed                	mov    %ebp,%ebp
   2:	48 89 c5             	mov    %rax,%rbp
   5:	e9 fe fe ff ff       	jmpq   0xffffff08
   a:	48 8d 7d 10          	lea    0x10(%rbp),%rdi
   e:	48 89 f8             	mov    %rdi,%rax
  11:	48 c1 e8 03          	shr    $0x3,%rax
  15:	80 3c 18 00          	cmpb   $0x0,(%rax,%rbx,1)
  19:	0f 85 51 0d 00 00    	jne    0xd70
  1f:	4c 8b 65 10          	mov    0x10(%rbp),%r12
  23:	4c 89 e0             	mov    %r12,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	80 3c 18 00          	cmpb   $0x0,(%rax,%rbx,1) <-- trapping instruction
  2e:	0f 85 4e 0d 00 00    	jne    0xd82
  34:	4d 8b 34 24          	mov    (%r12),%r14
  38:	49 8d 7c 24 08       	lea    0x8(%r12),%rdi
  3d:	48 89 f8             	mov    %rdi,%rax