general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
CPU: 1 PID: 922 Comm: syz.3.123 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
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+0x46b/0xe50 fs/namei.c:4585
Code: 49 89 c5 48 3d 01 f0 ff ff 72 0e e8 ef 3f ba ff 4c 8b 24 24 e9 6d 03 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 2e 05 00 00 41 8b 5d 00 be 00 00 70 00
RSP: 0018:ffffc90000d87d80 EFLAGS: 00010202

RAX: dffffc0000000000 RBX: ffffc90000d87e60 RCX: ffff8881318c13c0
RDX: 0000000000000000 RSI: 0000000000000006 RDI: ffff8881318c13c0
RBP: ffffc90000d87ef0 R08: ffff8881338d66bf R09: 1ffff1102671acd7
R10: dffffc0000000000 R11: ffffed102671acd8 R12: 0000000000000002
R13: 0000000000000010 R14: ffff888131fc6600 R15: 1ffff920001b0f01
FS:  00007f6ba8a6a6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6ba8a69ff8 CR3: 000000011618a000 CR4: 00000000003506a0
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: 0033:0x7f6baa051819
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:00007f6ba8a6a028 EFLAGS: 00000246 ORIG_RAX: 000000000000013c
RAX: ffffffffffffffda RBX: 00007f6baa2cb180 RCX: 00007f6baa051819
RDX: ffffffffffffff9c RSI: 0000200000000440 RDI: ffffffffffffff9c
RBP: 00007f6baa0e7c91 R08: 0000000000000004 R09: 0000000000000000
R10: 0000200000000480 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6baa2cb218 R14: 00007f6baa2cb180 R15: 00007ffc385a6918
Modules linked in:
---[ end trace d554969dbbde861e ]---
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+0x46b/0xe50 fs/namei.c:4585
Code: 49 89 c5 48 3d 01 f0 ff ff 72 0e e8 ef 3f ba ff 4c 8b 24 24 e9 6d 03 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 2e 05 00 00 41 8b 5d 00 be 00 00 70 00
RSP: 0018:ffffc90000d87d80 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffffc90000d87e60 RCX: ffff8881318c13c0
RDX: 0000000000000000 RSI: 0000000000000006 RDI: ffff8881318c13c0
RBP: ffffc90000d87ef0 R08: ffff8881338d66bf R09: 1ffff1102671acd7
R10: dffffc0000000000 R11: ffffed102671acd8 R12: 0000000000000002
R13: 0000000000000010 R14: ffff888131fc6600 R15: 1ffff920001b0f01
FS:  00007f6ba8a6a6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8eedf65980 CR3: 000000011618a000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	49 89 c5             	mov    %rax,%r13
   3:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   9:	72 0e                	jb     0x19
   b:	e8 ef 3f ba ff       	call   0xffba3fff
  10:	4c 8b 24 24          	mov    (%rsp),%r12
  14:	e9 6d 03 00 00       	jmp    0x386
  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 2e 05 00 00    	jne    0x565
  37:	41 8b 5d 00          	mov    0x0(%r13),%ebx
  3b:	be 00 00 70 00       	mov    $0x700000,%esi