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: 568 Comm: syz.5.40 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:394 [inline]
RIP: 0010:d_is_miss include/linux/dcache.h:399 [inline]
RIP: 0010:d_is_negative include/linux/dcache.h:445 [inline]
RIP: 0010:atomic_open fs/namei.c:3368 [inline]
RIP: 0010:lookup_open fs/namei.c:3460 [inline]
RIP: 0010:open_last_lookups fs/namei.c:3557 [inline]
RIP: 0010:path_openat+0x1231/0x2f80 fs/namei.c:3787
Code: 0b e8 c3 0d af ff 41 be f3 ff ff ff 48 89 df e8 05 93 02 00 49 63 de eb 56 e8 ab 0d af ff 4c 8b 6c 24 10 48 89 d8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 a0 0d 00 00 44 8b 33 be 00 00 70 00 44
RSP: 0018:ffffc90000797960 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000008 RCX: 0000000000080000
RDX: ffffc90011253000 RSI: 00000000000001bd RDI: 00000000000001be
RBP: ffffc90000797b70 R08: ffffc90000797887 R09: 1ffff920000f2f10
R10: dffffc0000000000 R11: fffff520000f2f11 R12: 0000000000000000
R13: ffffc90000797be0 R14: 0000000000000000 R15: dffffc0000000000
FS:  00007f3220e686c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3220e67ff8 CR3: 0000000120f9c000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_filp_open+0x1f1/0x430 fs/namei.c:3817
 do_sys_openat2+0x15e/0x810 fs/open.c:1343
 do_sys_open fs/open.c:1359 [inline]
 __do_sys_openat fs/open.c:1375 [inline]
 __se_sys_openat fs/open.c:1370 [inline]
 __x64_sys_openat+0x136/0x160 fs/open.c:1370
 x64_sys_call+0x783/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:258
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f321ff9bf79
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:00007f3220e68028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f3220216180 RCX: 00007f321ff9bf79
RDX: 0000000000000000 RSI: 0000200000000a80 RDI: ffffffffffffff9c
RBP: 00007f32200327e0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3220216218 R14: 00007f3220216180 R15: 00007ffdafe7dec8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__d_entry_type include/linux/dcache.h:394 [inline]
RIP: 0010:d_is_miss include/linux/dcache.h:399 [inline]
RIP: 0010:d_is_negative include/linux/dcache.h:445 [inline]
RIP: 0010:atomic_open fs/namei.c:3368 [inline]
RIP: 0010:lookup_open fs/namei.c:3460 [inline]
RIP: 0010:open_last_lookups fs/namei.c:3557 [inline]
RIP: 0010:path_openat+0x1231/0x2f80 fs/namei.c:3787
Code: 0b e8 c3 0d af ff 41 be f3 ff ff ff 48 89 df e8 05 93 02 00 49 63 de eb 56 e8 ab 0d af ff 4c 8b 6c 24 10 48 89 d8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 a0 0d 00 00 44 8b 33 be 00 00 70 00 44
RSP: 0018:ffffc90000797960 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000008 RCX: 0000000000080000
RDX: ffffc90011253000 RSI: 00000000000001bd RDI: 00000000000001be
RBP: ffffc90000797b70 R08: ffffc90000797887 R09: 1ffff920000f2f10
R10: dffffc0000000000 R11: fffff520000f2f11 R12: 0000000000000000
R13: ffffc90000797be0 R14: 0000000000000000 R15: dffffc0000000000
FS:  00007f3220e686c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2d361e96c0 CR3: 0000000120f9c000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	e8 c3 0d af ff       	call   0xffaf0dc8
   5:	41 be f3 ff ff ff    	mov    $0xfffffff3,%r14d
   b:	48 89 df             	mov    %rbx,%rdi
   e:	e8 05 93 02 00       	call   0x29318
  13:	49 63 de             	movslq %r14d,%rbx
  16:	eb 56                	jmp    0x6e
  18:	e8 ab 0d af ff       	call   0xffaf0dc8
  1d:	4c 8b 6c 24 10       	mov    0x10(%rsp),%r13
  22:	48 89 d8             	mov    %rbx,%rax
  25:	48 c1 e8 03          	shr    $0x3,%rax
* 29:	42 0f b6 04 38       	movzbl (%rax,%r15,1),%eax <-- trapping instruction
  2e:	84 c0                	test   %al,%al
  30:	0f 85 a0 0d 00 00    	jne    0xdd6
  36:	44 8b 33             	mov    (%rbx),%r14d
  39:	be 00 00 70 00       	mov    $0x700000,%esi
  3e:	44                   	rex.R