syzbot

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: 288 Comm: syz-executor287 Not tainted 5.10.225-syzkaller-00513-g8d23314f588a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
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+0x790/0x1240 fs/namei.c:4577
Code: ff ff 48 89 c3 48 3d 01 f0 ff ff 72 16 e8 78 52 b6 ff 41 89 dc 48 8b 1c 24 4c 8b 6c 24 58 e9 60 03 00 00 49 89 dc 49 c1 ec 03 <43> 0f b6 04 3c 84 c0 4c 8b 6c 24 58 0f 85 18 06 00 00 48 89 5c 24
RSP: 0018:ffffc9000096fce0 EFLAGS: 00010202
RAX: 0000000000000010 RBX: 0000000000000010 RCX: ffff888120954f00
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000000
RBP: ffffc9000096fef0 R08: ffffffff81b68a38 R09: ffffed10239d673e
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000002
R13: 0000000000000000 R14: ffffc9000096fe01 R15: dffffc0000000000
FS:  00007f593a9776c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055a7f7f074f0 CR3: 00000001207d0000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __do_sys_renameat2 fs/namei.c:4657 [inline]
 __se_sys_renameat2 fs/namei.c:4654 [inline]
 __x64_sys_renameat2+0xdd/0xf0 fs/namei.c:4654
 do_syscall_64+0x34/0x70
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f593a9b5679
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f593a977218 EFLAGS: 00000246 ORIG_RAX: 000000000000013c
RAX: ffffffffffffffda RBX: 00007f593aa443e8 RCX: 00007f593a9b5679
RDX: 0000000000000004 RSI: 0000000020000500 RDI: 0000000000000004
RBP: 00007f593aa443e0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000200001c0 R11: 0000000000000246 R12: 00007f593aa1109c
R13: 0030656c69662f2e R14: 00007f593aa110ca R15: 0031656c69662f2e
Modules linked in:
---[ end trace 82620d72bd2cc69f ]---
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+0x790/0x1240 fs/namei.c:4577
Code: ff ff 48 89 c3 48 3d 01 f0 ff ff 72 16 e8 78 52 b6 ff 41 89 dc 48 8b 1c 24 4c 8b 6c 24 58 e9 60 03 00 00 49 89 dc 49 c1 ec 03 <43> 0f b6 04 3c 84 c0 4c 8b 6c 24 58 0f 85 18 06 00 00 48 89 5c 24
RSP: 0018:ffffc9000096fce0 EFLAGS: 00010202
RAX: 0000000000000010 RBX: 0000000000000010 RCX: ffff888120954f00
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000000
RBP: ffffc9000096fef0 R08: ffffffff81b68a38 R09: ffffed10239d673e
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000002
R13: 0000000000000000 R14: ffffc9000096fe01 R15: dffffc0000000000
FS:  00007f593a9776c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055a7f7f074f0 CR3: 00000001207d0000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	ff 48 89             	decl   -0x77(%rax)
   3:	c3                   	ret
   4:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
   a:	72 16                	jb     0x22
   c:	e8 78 52 b6 ff       	call   0xffb65289
  11:	41 89 dc             	mov    %ebx,%r12d
  14:	48 8b 1c 24          	mov    (%rsp),%rbx
  18:	4c 8b 6c 24 58       	mov    0x58(%rsp),%r13
  1d:	e9 60 03 00 00       	jmp    0x382
  22:	49 89 dc             	mov    %rbx,%r12
  25:	49 c1 ec 03          	shr    $0x3,%r12
* 29:	43 0f b6 04 3c       	movzbl (%r12,%r15,1),%eax <-- trapping instruction
  2e:	84 c0                	test   %al,%al
  30:	4c 8b 6c 24 58       	mov    0x58(%rsp),%r13
  35:	0f 85 18 06 00 00    	jne    0x653
  3b:	48                   	rex.W
  3c:	89                   	.byte 0x89
  3d:	5c                   	pop    %rsp
  3e:	24                   	.byte 0x24