Oops: general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f]
CPU: 0 UID: 0 PID: 4509 Comm: syz.1.1491 Not tainted syzkaller #0 3a44bb4c5afb37201027c4f56c4312533634f50d
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:__d_entry_type include/linux/dcache.h:414 [inline]
RIP: 0010:d_is_miss include/linux/dcache.h:419 [inline]
RIP: 0010:d_is_negative include/linux/dcache.h:465 [inline]
RIP: 0010:atomic_open fs/namei.c:3479 [inline]
RIP: 0010:lookup_open fs/namei.c:3574 [inline]
RIP: 0010:open_last_lookups fs/namei.c:3702 [inline]
RIP: 0010:path_openat+0x1568/0x35a0 fs/namei.c:3938
Code: ce ac 02 00 49 63 de eb 66 e8 24 04 99 ff 41 be b5 ff ff ff e9 1d f8 ff ff e8 14 04 99 ff 4c 8b 6c 24 60 48 89 d8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 4d 0d 00 00 44 8b 33 be 00 00 70 00 44
RSP: 0018:ffffc9000e7d79e0 EFLAGS: 00010207
RAX: 0000000000000003 RBX: 000000000000001c RCX: 0000000000080000
RDX: ffffc90002e57000 RSI: 00000000000001be RDI: 00000000000001bf
RBP: ffffc9000e7d7bf0 R08: ffff8881f6e50c07 R09: 1ffff1103edca180
R10: dffffc0000000000 R11: ffffed103edca181 R12: 0000000000000040
R13: 1ffff11022b4a0c9 R14: 0000000000000000 R15: dffffc0000000000
FS:  00007f4d6f89d6c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4d6f89cff8 CR3: 0000000115848000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 do_filp_open+0x1f2/0x440 fs/namei.c:3968
 do_sys_openat2+0x134/0x1d0 fs/open.c:1440
 do_sys_open fs/open.c:1455 [inline]
 __do_sys_creat fs/open.c:1533 [inline]
 __se_sys_creat fs/open.c:1527 [inline]
 __x64_sys_creat+0x92/0xc0 fs/open.c:1527
 x64_sys_call+0x2710/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:86
 do_syscall_x64 arch/x86/entry/common.c:47 [inline]
 do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f4d6e99de59
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:00007f4d6f89d028 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 00007f4d6ec26090 RCX: 00007f4d6e99de59
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000200000000080
RBP: 00007f4d6ea33e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4d6ec26128 R14: 00007f4d6ec26090 R15: 00007fff849c08f8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__d_entry_type include/linux/dcache.h:414 [inline]
RIP: 0010:d_is_miss include/linux/dcache.h:419 [inline]
RIP: 0010:d_is_negative include/linux/dcache.h:465 [inline]
RIP: 0010:atomic_open fs/namei.c:3479 [inline]
RIP: 0010:lookup_open fs/namei.c:3574 [inline]
RIP: 0010:open_last_lookups fs/namei.c:3702 [inline]
RIP: 0010:path_openat+0x1568/0x35a0 fs/namei.c:3938
Code: ce ac 02 00 49 63 de eb 66 e8 24 04 99 ff 41 be b5 ff ff ff e9 1d f8 ff ff e8 14 04 99 ff 4c 8b 6c 24 60 48 89 d8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 4d 0d 00 00 44 8b 33 be 00 00 70 00 44
RSP: 0018:ffffc9000e7d79e0 EFLAGS: 00010207

RAX: 0000000000000003 RBX: 000000000000001c RCX: 0000000000080000
RDX: ffffc90002e57000 RSI: 00000000000001be RDI: 00000000000001bf
RBP: ffffc9000e7d7bf0 R08: ffff8881f6e50c07 R09: 1ffff1103edca180
R10: dffffc0000000000 R11: ffffed103edca181 R12: 0000000000000040
R13: 1ffff11022b4a0c9 R14: 0000000000000000 R15: dffffc0000000000
FS:  00007f4d6f89d6c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000557b7bfffaf8 CR3: 0000000115848000 CR4: 00000000003526b0
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	ac                   	lods   %ds:(%rsi),%al
   1:	02 00                	add    (%rax),%al
   3:	49 63 de             	movslq %r14d,%rbx
   6:	eb 66                	jmp    0x6e
   8:	e8 24 04 99 ff       	call   0xff990431
   d:	41 be b5 ff ff ff    	mov    $0xffffffb5,%r14d
  13:	e9 1d f8 ff ff       	jmp    0xfffff835
  18:	e8 14 04 99 ff       	call   0xff990431
  1d:	4c 8b 6c 24 60       	mov    0x60(%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 4d 0d 00 00    	jne    0xd83
  36:	44 8b 33             	mov    (%rbx),%r14d
  39:	be 00 00 70 00       	mov    $0x700000,%esi
  3e:	44                   	rex.R