general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 1 PID: 9090 Comm: syz.0.2399 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__d_entry_type include/linux/dcache.h:400 [inline]
RIP: 0010:d_is_miss include/linux/dcache.h:405 [inline]
RIP: 0010:d_is_negative include/linux/dcache.h:451 [inline]
RIP: 0010:do_renameat2+0x568/0xe50 fs/namei.c:4596
Code: ff ff ff e9 bd 00 00 00 e8 f5 41 ba ff 48 8b 5c 24 20 83 7c 24 1c 00 74 9f 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 8b 04 00 00 8b 1b 89 de 81 e6 00 00 70 00
RSP: 0018:ffffc90000fb7d80 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 000000000000000a RCX: dffffc0000000000
RDX: ffffc90010b47000 RSI: 0000000000001349 RDI: 000000000000134a
RBP: ffffc90000fb7ef0 R08: ffff88811c9d38df R09: 1ffff1102393a71b
R10: dffffc0000000000 R11: ffffed102393a71c R12: 1ffff1102796beaa
R13: ffff88813cb5f550 R14: ffff888106dbb300 R15: 1ffff920001f6f01
FS:  00007fe77015b6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000a000 CR3: 0000000111063000 CR4: 00000000003526a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __do_sys_renameat2 fs/namei.c:4665 [inline]
 __se_sys_renameat2 fs/namei.c:4662 [inline]
 __x64_sys_renameat2+0xd8/0xf0 fs/namei.c:4662
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fe77171fcb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe77015b028 EFLAGS: 00000246 ORIG_RAX: 000000000000013c
RAX: ffffffffffffffda RBX: 00007fe77199b090 RCX: 00007fe77171fcb9
RDX: ffffffffffffff9c RSI: 0000200000000440 RDI: ffffffffffffff9c
RBP: 00007fe77178dbf7 R08: 0000000000000002 R09: 0000000000000000
R10: 0000200000000480 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe77199b128 R14: 00007fe77199b090 R15: 00007fff01f41cf8
Modules linked in:
---[ end trace 9d8ff917f6de6383 ]---
RIP: 0010:__d_entry_type include/linux/dcache.h:400 [inline]
RIP: 0010:d_is_miss include/linux/dcache.h:405 [inline]
RIP: 0010:d_is_negative include/linux/dcache.h:451 [inline]
RIP: 0010:do_renameat2+0x568/0xe50 fs/namei.c:4596
Code: ff ff ff e9 bd 00 00 00 e8 f5 41 ba ff 48 8b 5c 24 20 83 7c 24 1c 00 74 9f 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 8b 04 00 00 8b 1b 89 de 81 e6 00 00 70 00
RSP: 0018:ffffc90000fb7d80 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 000000000000000a RCX: dffffc0000000000
RDX: ffffc90010b47000 RSI: 0000000000001349 RDI: 000000000000134a
RBP: ffffc90000fb7ef0 R08: ffff88811c9d38df R09: 1ffff1102393a71b
R10: dffffc0000000000 R11: ffffed102393a71c R12: 1ffff1102796beaa
R13: ffff88813cb5f550 R14: ffff888106dbb300 R15: 1ffff920001f6f01
FS:  00007fe77015b6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbb28b41000 CR3: 0000000111063000 CR4: 00000000003526a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	ff                   	ljmp   (bad)
   1:	e9 bd 00 00 00       	jmp    0xc3
   6:	e8 f5 41 ba ff       	call   0xffba4200
   b:	48 8b 5c 24 20       	mov    0x20(%rsp),%rbx
  10:	83 7c 24 1c 00       	cmpl   $0x0,0x1c(%rsp)
  15:	74 9f                	je     0xffffffb6
  17:	48 89 d8             	mov    %rbx,%rax
  1a:	48 c1 e8 03          	shr    $0x3,%rax
  1e:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  25:	fc ff df
* 28:	0f b6 04 08          	movzbl (%rax,%rcx,1),%eax <-- trapping instruction
  2c:	84 c0                	test   %al,%al
  2e:	0f 85 8b 04 00 00    	jne    0x4bf
  34:	8b 1b                	mov    (%rbx),%ebx
  36:	89 de                	mov    %ebx,%esi
  38:	81 e6 00 00 70 00    	and    $0x700000,%esi