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: 0 UID: 0 PID: 4462 Comm: syz.4.1710 Not tainted syzkaller #0 f39b5fd6571327469eae9f28eb29c870797b656b
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
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 36 e5 98 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:ffffc9000ca3fd40 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 000000000000000b RCX: 0000000000080000
RDX: ffffc900035c9000 RSI: 00000000000002e5 RDI: 00000000000002e6
RBP: ffffc9000ca3fee8 R08: ffff8881f6e50cc7 R09: 1ffff1103edca198
R10: dffffc0000000000 R11: ffffed103edca199 R12: 0000000000000000
R13: 0000000000000001 R14: ffffc9000ca3fe40 R15: ffffc9000ca3fe01
FS:  00007f0a26eb66c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0a26eb5ff8 CR3: 00000001141aa000 CR4: 00000000003526b0
DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000080083
DR3: ffffffffefffff16 DR6: 00000000ffff0ff0 DR7: 0000000000000400
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: 0033:0x7f0a25f9c819
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:00007f0a26eb6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007f0a26216180 RCX: 00007f0a25f9c819
RDX: 0000000000000000 RSI: 0000200000000140 RDI: 0000200000000100
RBP: 00007f0a26032c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0a26216218 R14: 00007f0a26216180 R15: 00007ffe1272be38
 </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 36 e5 98 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:ffffc9000ca3fd40 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 000000000000000b RCX: 0000000000080000
RDX: ffffc900035c9000 RSI: 00000000000002e5 RDI: 00000000000002e6
RBP: ffffc9000ca3fee8 R08: ffff8881f6e50cc7 R09: 1ffff1103edca198
R10: dffffc0000000000 R11: ffffed103edca199 R12: 0000000000000000
R13: 0000000000000001 R14: ffffc9000ca3fe40 R15: ffffc9000ca3fe01
FS:  00007f0a26eb66c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0a25fe9f00 CR3: 00000001141aa000 CR4: 00000000003526b0
DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000080083
DR3: ffffffffefffff16 DR6: 00000000ffff0ff0 DR7: 0000000000000400
----------------
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 36 e5 98 ff       	call   0xff98e547
  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