general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 PID: 1949 Comm: syz.3.459 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:394 [inline]
RIP: 0010:d_is_miss include/linux/dcache.h:399 [inline]
RIP: 0010:d_is_negative include/linux/dcache.h:445 [inline]
RIP: 0010:do_renameat2+0x4cb/0xfd0 fs/namei.c:4982
Code: 89 c5 48 3d 01 f0 ff ff 72 0f e8 20 68 ae ff 4c 8b 64 24 20 e9 47 04 00 00 4d 89 ec 49 c1 ec 03 48 b8 00 00 00 00 00 fc ff df <41> 0f b6 04 04 84 c0 0f 85 20 06 00 00 41 8b 5d 00 be 00 00 70 00
RSP: 0018:ffffc90002317ce0 EFLAGS: 00010247
RAX: dffffc0000000000 RBX: ffff88811ac18000 RCX: 0000000000080000
RDX: ffffc90003662000 RSI: 00000000000002ca RDI: 00000000000002cb
RBP: ffffc90002317ed8 R08: ffffc90002317bc7 R09: 1ffff92000462f78
R10: dffffc0000000000 R11: fffff52000462f79 R12: 0000000000000000
R13: 0000000000000005 R14: 1ffff92000462f01 R15: 0000000000000000
FS:  00007f0f89b996c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0f89b98ff8 CR3: 000000010f2c8000 CR4: 00000000003526a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __do_sys_rename fs/namei.c:5080 [inline]
 __se_sys_rename fs/namei.c:5078 [inline]
 __x64_sys_rename+0x86/0x90 fs/namei.c:5078
 x64_sys_call+0x300/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:83
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f0f88d9aeb9
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:00007f0f89b99028 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007f0f89016180 RCX: 00007f0f88d9aeb9
RDX: 0000000000000000 RSI: 00002000000000c0 RDI: 0000200000000100
RBP: 00007f0f88e08c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0f89016218 R14: 00007f0f89016180 R15: 00007ffe15a995e8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__d_entry_type include/linux/dcache.h:394 [inline]
RIP: 0010:d_is_miss include/linux/dcache.h:399 [inline]
RIP: 0010:d_is_negative include/linux/dcache.h:445 [inline]
RIP: 0010:do_renameat2+0x4cb/0xfd0 fs/namei.c:4982
Code: 89 c5 48 3d 01 f0 ff ff 72 0f e8 20 68 ae ff 4c 8b 64 24 20 e9 47 04 00 00 4d 89 ec 49 c1 ec 03 48 b8 00 00 00 00 00 fc ff df <41> 0f b6 04 04 84 c0 0f 85 20 06 00 00 41 8b 5d 00 be 00 00 70 00
RSP: 0018:ffffc90002317ce0 EFLAGS: 00010247
RAX: dffffc0000000000 RBX: ffff88811ac18000 RCX: 0000000000080000
RDX: ffffc90003662000 RSI: 00000000000002ca RDI: 00000000000002cb
RBP: ffffc90002317ed8 R08: ffffc90002317bc7 R09: 1ffff92000462f78
R10: dffffc0000000000 R11: fffff52000462f79 R12: 0000000000000000
R13: 0000000000000005 R14: 1ffff92000462f01 R15: 0000000000000000
FS:  00007f0f89b996c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0f89b98ff8 CR3: 000000010f2c8000 CR4: 00000000003526a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	89 c5                	mov    %eax,%ebp
   2:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   8:	72 0f                	jb     0x19
   a:	e8 20 68 ae ff       	call   0xffae682f
   f:	4c 8b 64 24 20       	mov    0x20(%rsp),%r12
  14:	e9 47 04 00 00       	jmp    0x460
  19:	4d 89 ec             	mov    %r13,%r12
  1c:	49 c1 ec 03          	shr    $0x3,%r12
  20:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  27:	fc ff df
* 2a:	41 0f b6 04 04       	movzbl (%r12,%rax,1),%eax <-- trapping instruction
  2f:	84 c0                	test   %al,%al
  31:	0f 85 20 06 00 00    	jne    0x657
  37:	41 8b 5d 00          	mov    0x0(%r13),%ebx
  3b:	be 00 00 70 00       	mov    $0x700000,%esi