general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 0 PID: 472 Comm: syz.2.16 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:dir_rename fs/incfs/vfs.c:1394 [inline]
RIP: 0010:dir_rename_wrap+0xf2/0x550 fs/incfs/vfs.c:85
Code: 4c 89 f7 e8 d0 45 a5 ff 4d 8b 36 eb 12 e8 a6 c5 6a ff 45 31 f6 49 bc 00 00 00 00 00 fc ff df 49 83 c6 08 4c 89 f0 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 f7 e8 9f 45 a5 ff 4d 8b 36 4d 85 f6 0f
RSP: 0018:ffffc90002f57bb8 EFLAGS: 00010202
RAX: 0000000000000001 RBX: ffff888117703860 RCX: ffff888117a90000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90002f57c30 R08: ffffc90002f57b47 R09: 1ffff920005eaf68
R10: dffffc0000000000 R11: fffff520005eaf69 R12: dffffc0000000000
R13: ffff88811068c770 R14: 0000000000000008 R15: ffff888117703800
FS:  00007f71d33776c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000000 CR3: 000000011706f000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 vfs_rename+0xa66/0xf50 fs/namei.c:4482
 do_renameat2+0x6f4/0xe50 fs/namei.c:4627
 __do_sys_rename fs/namei.c:4678 [inline]
 __se_sys_rename fs/namei.c:4676 [inline]
 __x64_sys_rename+0x86/0x90 fs/namei.c:4676
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f71d39108f9
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:00007f71d3377028 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007f71d3b3dfa0 RCX: 00007f71d39108f9
RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000200000000040
RBP: 00007f71d39a264c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f71d3b3dfa0 R15: 00007fffcf88c038
Modules linked in:
---[ end trace 29cd91371432c168 ]---
RIP: 0010:dir_rename fs/incfs/vfs.c:1394 [inline]
RIP: 0010:dir_rename_wrap+0xf2/0x550 fs/incfs/vfs.c:85
Code: 4c 89 f7 e8 d0 45 a5 ff 4d 8b 36 eb 12 e8 a6 c5 6a ff 45 31 f6 49 bc 00 00 00 00 00 fc ff df 49 83 c6 08 4c 89 f0 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 f7 e8 9f 45 a5 ff 4d 8b 36 4d 85 f6 0f
RSP: 0018:ffffc90002f57bb8 EFLAGS: 00010202
RAX: 0000000000000001 RBX: ffff888117703860 RCX: ffff888117a90000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90002f57c30 R08: ffffc90002f57b47 R09: 1ffff920005eaf68
R10: dffffc0000000000 R11: fffff520005eaf69 R12: dffffc0000000000
R13: ffff88811068c770 R14: 0000000000000008 R15: ffff888117703800
FS:  00007f71d33776c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f71d3b081b8 CR3: 000000011706f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	4c 89 f7             	mov    %r14,%rdi
   3:	e8 d0 45 a5 ff       	call   0xffa545d8
   8:	4d 8b 36             	mov    (%r14),%r14
   b:	eb 12                	jmp    0x1f
   d:	e8 a6 c5 6a ff       	call   0xff6ac5b8
  12:	45 31 f6             	xor    %r14d,%r14d
  15:	49 bc 00 00 00 00 00 	movabs $0xdffffc0000000000,%r12
  1c:	fc ff df
  1f:	49 83 c6 08          	add    $0x8,%r14
  23:	4c 89 f0             	mov    %r14,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 20 00       	cmpb   $0x0,(%rax,%r12,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	4c 89 f7             	mov    %r14,%rdi
  34:	e8 9f 45 a5 ff       	call   0xffa545d8
  39:	4d 8b 36             	mov    (%r14),%r14
  3c:	4d 85 f6             	test   %r14,%r14
  3f:	0f                   	.byte 0xf