Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 1 UID: 0 PID: 492 Comm: syz.2.17 Not tainted syzkaller #0 22282b4390bbc7ca5f02a9d8fd7452d61a27daa1
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__d_entry_type include/linux/dcache.h:414 [inline]
RIP: 0010:d_is_miss include/linux/dcache.h:419 [inline]
RIP: 0010:d_is_negative include/linux/dcache.h:465 [inline]
RIP: 0010:do_renameat2+0x403/0xc40 fs/namei.c:5126
Code: ff 48 89 c3 48 3d 01 f0 ff ff 72 0d e8 16 58 99 ff 41 89 dc e9 78 04 00 00 49 89 dd 49 c1 ed 03 48 b8 00 00 00 00 00 fc ff df <41> 0f b6 44 05 00 84 c0 0f 85 1e 06 00 00 48 89 1c 24 8b 1b be 00
RSP: 0018:ffffc900010cfd40 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000008 RCX: ffff88811c8db900
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8881110b2f60
RBP: ffffc900010cfee8 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000219f24 R12: 0000000000000000
R13: 0000000000000001 R14: ffffc900010cfe40 R15: ffffc900010cfe01
FS:  00007fcb339de6c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcb339ddff8 CR3: 000000011e026000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 __do_sys_rename fs/namei.c:5225 [inline]
 __se_sys_rename fs/namei.c:5223 [inline]
 __x64_sys_rename+0x86/0xa0 fs/namei.c:5223
 x64_sys_call+0x150b/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:83
 do_syscall_x64 arch/x86/entry/common.c:47 [inline]
 do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fcb33b9a679
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:00007fcb339de028 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007fcb33e06090 RCX: 00007fcb33b9a679
RDX: 0000000000000000 RSI: 00002000000000c0 RDI: 0000200000000100
RBP: 00007fcb33c2dee0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fcb33e06128 R14: 00007fcb33e06090 R15: 00007ffffaa69ec8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__d_entry_type include/linux/dcache.h:414 [inline]
RIP: 0010:d_is_miss include/linux/dcache.h:419 [inline]
RIP: 0010:d_is_negative include/linux/dcache.h:465 [inline]
RIP: 0010:do_renameat2+0x403/0xc40 fs/namei.c:5126
Code: ff 48 89 c3 48 3d 01 f0 ff ff 72 0d e8 16 58 99 ff 41 89 dc e9 78 04 00 00 49 89 dd 49 c1 ed 03 48 b8 00 00 00 00 00 fc ff df <41> 0f b6 44 05 00 84 c0 0f 85 1e 06 00 00 48 89 1c 24 8b 1b be 00
RSP: 0018:ffffc900010cfd40 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000008 RCX: ffff88811c8db900
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8881110b2f60
RBP: ffffc900010cfee8 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000219f24 R12: 0000000000000000
R13: 0000000000000001 R14: ffffc900010cfe40 R15: ffffc900010cfe01
FS:  00007fcb339de6c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcb339ddff8 CR3: 000000011e026000 CR4: 00000000003526b0
----------------
Code disassembly (best guess):
   0:	ff 48 89             	decl   -0x77(%rax)
   3:	c3                   	ret
   4:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   a:	72 0d                	jb     0x19
   c:	e8 16 58 99 ff       	call   0xff995827
  11:	41 89 dc             	mov    %ebx,%r12d
  14:	e9 78 04 00 00       	jmp    0x491
  19:	49 89 dd             	mov    %rbx,%r13
  1c:	49 c1 ed 03          	shr    $0x3,%r13
  20:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  27:	fc ff df
* 2a:	41 0f b6 44 05 00    	movzbl 0x0(%r13,%rax,1),%eax <-- trapping instruction
  30:	84 c0                	test   %al,%al
  32:	0f 85 1e 06 00 00    	jne    0x656
  38:	48 89 1c 24          	mov    %rbx,(%rsp)
  3c:	8b 1b                	mov    (%rbx),%ebx
  3e:	be                   	.byte 0xbe