Oops: general protection fault, probably for non-canonical address 0xdffffc0000000008: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000040-0x0000000000000047]
CPU: 1 UID: 0 PID: 383 Comm: syz.2.17 Not tainted syzkaller #0 bfede744b46277b76d69ebe6cb8c22209d769bcb
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:do_rmdir+0x1f5/0x590 fs/namei.c:4400
Code: 31 d2 e8 1e 30 ff ff 49 89 c6 48 3d 01 f0 ff ff 72 0d e8 be b0 99 ff 45 89 f5 e9 bb 00 00 00 4d 8d 6e 30 4c 89 e8 48 c1 e8 03 <42> 80 3c 38 00 74 08 4c 89 ef e8 bc 74 f1 ff 49 83 7d 00 00 74 25
RSP: 0018:ffffc900011bfe20 EFLAGS: 00010202
RAX: 0000000000000008 RBX: ffff888115756600 RCX: ffff88811478a600
RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff88811128ad40
RBP: ffffc900011bfef8 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000237f40 R12: 00000000ffffff9c
R13: 0000000000000040 R14: 0000000000000010 R15: dffffc0000000000
FS:  00007fe1cd8d56c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe1cd8b3ff8 CR3: 0000000115834000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 __do_sys_rmdir fs/namei.c:4426 [inline]
 __se_sys_rmdir fs/namei.c:4424 [inline]
 __x64_sys_rmdir+0x4b/0x60 fs/namei.c:4424
 x64_sys_call+0xaf7/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:85
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fe1cc99acb9
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:00007fe1cd8d5028 EFLAGS: 00000246 ORIG_RAX: 0000000000000054
RAX: ffffffffffffffda RBX: 00007fe1ccc15fa0 RCX: 00007fe1cc99acb9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000040
RBP: 00007fe1cca08bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe1ccc16038 R14: 00007fe1ccc15fa0 R15: 00007ffcebef3638
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:do_rmdir+0x1f5/0x590 fs/namei.c:4400
Code: 31 d2 e8 1e 30 ff ff 49 89 c6 48 3d 01 f0 ff ff 72 0d e8 be b0 99 ff 45 89 f5 e9 bb 00 00 00 4d 8d 6e 30 4c 89 e8 48 c1 e8 03 <42> 80 3c 38 00 74 08 4c 89 ef e8 bc 74 f1 ff 49 83 7d 00 00 74 25
RSP: 0018:ffffc900011bfe20 EFLAGS: 00010202
RAX: 0000000000000008 RBX: ffff888115756600 RCX: ffff88811478a600
RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff88811128ad40
RBP: ffffc900011bfef8 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000237f40 R12: 00000000ffffff9c
R13: 0000000000000040 R14: 0000000000000010 R15: dffffc0000000000
FS:  00007fe1cd8d56c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe1cd8b3ff8 CR3: 0000000115834000 CR4: 00000000003526b0
----------------
Code disassembly (best guess):
   0:	31 d2                	xor    %edx,%edx
   2:	e8 1e 30 ff ff       	call   0xffff3025
   7:	49 89 c6             	mov    %rax,%r14
   a:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax
  10:	72 0d                	jb     0x1f
  12:	e8 be b0 99 ff       	call   0xff99b0d5
  17:	45 89 f5             	mov    %r14d,%r13d
  1a:	e9 bb 00 00 00       	jmp    0xda
  1f:	4d 8d 6e 30          	lea    0x30(%r14),%r13
  23:	4c 89 e8             	mov    %r13,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 38 00       	cmpb   $0x0,(%rax,%r15,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	4c 89 ef             	mov    %r13,%rdi
  34:	e8 bc 74 f1 ff       	call   0xfff174f5
  39:	49 83 7d 00 00       	cmpq   $0x0,0x0(%r13)
  3e:	74 25                	je     0x65