general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 1 PID: 17381 Comm: syz.1.4865 Tainted: G        W         5.10.240-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2025
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:atomic_open fs/namei.c:3130 [inline]
RIP: 0010:lookup_open fs/namei.c:3219 [inline]
RIP: 0010:open_last_lookups fs/namei.c:3317 [inline]
RIP: 0010:path_openat+0x1738/0x3160 fs/namei.c:3506
Code: ae 61 02 00 49 63 de 4c 8b 74 24 38 e9 86 fb ff ff e8 ec 79 bb ff 44 8b 6c 24 14 44 8b a4 24 80 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 75 09 00 00 44 8b 33 be 00 00 70 00 44
RSP: 0018:ffffc9000157f960 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000008 RCX: 0000000000080000
RDX: ffffc9000e30a000 RSI: 0000000000000232 RDI: 0000000000000233
RBP: ffffc9000157fb70 R08: dffffc0000000000 R09: ffffed1026085e2e
R10: ffffed1026085e2e R11: 1ffff11026085e2d R12: 0000000000000000
R13: 0000000000000000 R14: ffff888143c19098 R15: dffffc0000000000
FS:  00007fcded28b6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000005fe0 CR3: 000000010aab3000 CR4: 00000000003526a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 do_filp_open+0x1b3/0x3e0 fs/namei.c:3536
 do_sys_openat2+0x14c/0x6d0 fs/open.c:1217
 __do_sys_openat2 fs/open.c:1274 [inline]
 __se_sys_openat2 fs/open.c:1252 [inline]
 __x64_sys_openat2+0x20e/0x270 fs/open.c:1252
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fcdee822be9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fcded28b038 EFLAGS: 00000246 ORIG_RAX: 00000000000001b5
RAX: ffffffffffffffda RBX: 00007fcdeea49fa0 RCX: 00007fcdee822be9
RDX: 0000200000000100 RSI: 0000200000000000 RDI: 00000000ffffff9c
RBP: 00007fcdee8a5e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000018 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fcdeea4a038 R14: 00007fcdeea49fa0 R15: 00007ffc59dff8b8
Modules linked in:
---[ end trace 48d6c9e3dde031dd ]---
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:atomic_open fs/namei.c:3130 [inline]
RIP: 0010:lookup_open fs/namei.c:3219 [inline]
RIP: 0010:open_last_lookups fs/namei.c:3317 [inline]
RIP: 0010:path_openat+0x1738/0x3160 fs/namei.c:3506
Code: ae 61 02 00 49 63 de 4c 8b 74 24 38 e9 86 fb ff ff e8 ec 79 bb ff 44 8b 6c 24 14 44 8b a4 24 80 00 00 00 48 89 d8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 75 09 00 00 44 8b 33 be 00 00 70 00 44
RSP: 0018:ffffc9000157f960 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000008 RCX: 0000000000080000
RDX: ffffc9000e30a000 RSI: 0000000000000232 RDI: 0000000000000233
RBP: ffffc9000157fb70 R08: dffffc0000000000 R09: ffffed1026085e2e
R10: ffffed1026085e2e R11: 1ffff11026085e2d R12: 0000000000000000
R13: 0000000000000000 R14: ffff888143c19098 R15: dffffc0000000000
FS:  00007fcded28b6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2a35e1 CR3: 000000010aab3000 CR4: 00000000003526b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	02 00                	add    (%rax),%al
   2:	49 63 de             	movslq %r14d,%rbx
   5:	4c 8b 74 24 38       	mov    0x38(%rsp),%r14
   a:	e9 86 fb ff ff       	jmp    0xfffffb95
   f:	e8 ec 79 bb ff       	call   0xffbb7a00
  14:	44 8b 6c 24 14       	mov    0x14(%rsp),%r13d
  19:	44 8b a4 24 80 00 00 	mov    0x80(%rsp),%r12d
  20:	00
  21:	48 89 d8             	mov    %rbx,%rax
  24:	48 c1 e8 03          	shr    $0x3,%rax
* 28:	42 0f b6 04 38       	movzbl (%rax,%r15,1),%eax <-- trapping instruction
  2d:	84 c0                	test   %al,%al
  2f:	0f 85 75 09 00 00    	jne    0x9aa
  35:	44 8b 33             	mov    (%rbx),%r14d
  38:	be 00 00 70 00       	mov    $0x700000,%esi
  3d:	44                   	rex.R