general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f]
CPU: 0 PID: 13 Comm: kworker/0:1 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: kafsd afs_process_async_call
RIP: 0010:rxrpc_kernel_get_srtt+0x28/0x100 net/rxrpc/peer_object.c:518
Code: 00 00 55 41 57 41 56 41 54 53 48 89 d3 49 89 f6 49 bc 00 00 00 00 00 fc ff df e8 13 5a 72 f8 49 83 c6 18 4c 89 f0 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 f7 e8 d9 82 b7 f8 4d 8b 36 4d 8d be 98
RSP: 0018:ffffc90000d27a10 EFLAGS: 00010206
RAX: 0000000000000003 RBX: ffffc90000d27aa0 RCX: ffff88813fe28000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880742c4e00
RBP: ffffc90000d27b10 R08: ffff88806166a01f R09: 1ffff1100c2cd403
R10: dffffc0000000000 R11: ffffed100c2cd404 R12: dffffc0000000000
R13: ffff8880742c4e00 R14: 0000000000000018 R15: ffff8880565018f0
FS:  0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3261cff8 CR3: 00000000614ac000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 afs_vlserver_probe_result+0x5fd/0xaa0 fs/afs/vl_probe.c:118
 afs_deliver_to_call+0xc13/0x1100 fs/afs/rxrpc.c:562
 afs_process_async_call+0x7e/0xe0 fs/afs/rxrpc.c:702
 process_one_work+0x867/0xff0 kernel/workqueue.c:2310
 worker_thread+0xad7/0x12a0 kernel/workqueue.c:2457
 kthread+0x42e/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>
Modules linked in:
---[ end trace 79cfe37733a377f9 ]---
RIP: 0010:rxrpc_kernel_get_srtt+0x28/0x100 net/rxrpc/peer_object.c:518
Code: 00 00 55 41 57 41 56 41 54 53 48 89 d3 49 89 f6 49 bc 00 00 00 00 00 fc ff df e8 13 5a 72 f8 49 83 c6 18 4c 89 f0 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 f7 e8 d9 82 b7 f8 4d 8b 36 4d 8d be 98
RSP: 0018:ffffc90000d27a10 EFLAGS: 00010206
RAX: 0000000000000003 RBX: ffffc90000d27aa0 RCX: ffff88813fe28000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880742c4e00
RBP: ffffc90000d27b10 R08: ffff88806166a01f R09: 1ffff1100c2cd403
R10: dffffc0000000000 R11: ffffed100c2cd404 R12: dffffc0000000000
R13: ffff8880742c4e00 R14: 0000000000000018 R15: ffff8880565018f0
FS:  0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3261cff8 CR3: 00000000614ac000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	00 00                	add    %al,(%rax)
   2:	55                   	push   %rbp
   3:	41 57                	push   %r15
   5:	41 56                	push   %r14
   7:	41 54                	push   %r12
   9:	53                   	push   %rbx
   a:	48 89 d3             	mov    %rdx,%rbx
   d:	49 89 f6             	mov    %rsi,%r14
  10:	49 bc 00 00 00 00 00 	movabs $0xdffffc0000000000,%r12
  17:	fc ff df
  1a:	e8 13 5a 72 f8       	call   0xf8725a32
  1f:	49 83 c6 18          	add    $0x18,%r14
  23:	4c 89 f0             	mov    %r14,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	4c 89 f7             	mov    %r14,%rdi
  34:	e8 d9 82 b7 f8       	call   0xf8b78312
  39:	4d 8b 36             	mov    (%r14),%r14
  3c:	4d                   	rex.WRB
  3d:	8d                   	.byte 0x8d
  3e:	be                   	.byte 0xbe
  3f:	98                   	cwtl