general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 PID: 334 Comm: syz-executor.0 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:404 [inline]
RIP: 0010:d_is_miss include/linux/dcache.h:409 [inline]
RIP: 0010:d_is_negative include/linux/dcache.h:455 [inline]
RIP: 0010:atomic_open fs/namei.c:3349 [inline]
RIP: 0010:lookup_open fs/namei.c:3441 [inline]
RIP: 0010:open_last_lookups fs/namei.c:3540 [inline]
RIP: 0010:path_openat+0x11df/0x2f20 fs/namei.c:3747
Code: eb 0b e8 14 46 b6 ff 41 be f3 ff ff ff 48 89 df e8 16 8d 02 00 49 63 de eb 55 e8 fc 45 b6 ff 4c 8b 2c 24 48 89 d8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 9f 0d 00 00 44 8b 33 be 00 00 70 00 44
RSP: 0018:ffffc90000d77980 EFLAGS: 00010247
RAX: 0000000000000000 RBX: 0000000000000004 RCX: ffff88810dd593c0
RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff88810dd593c0
RBP: ffffc90000d77b90 R08: ffff88812046727f R09: 1ffff1102408ce4f
R10: dffffc0000000000 R11: ffffed102408ce50 R12: 0000000000000000
R13: ffffc90000d77c00 R14: 0000000000000000 R15: dffffc0000000000
FS:  00007f0c92e826c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0c92e81fd0 CR3: 000000010d790000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 do_filp_open+0x1e2/0x410 fs/namei.c:3777
 do_sys_openat2+0x15e/0x7f0 fs/open.c:1236
 do_sys_open fs/open.c:1252 [inline]
 __do_sys_openat fs/open.c:1268 [inline]
 __se_sys_openat fs/open.c:1263 [inline]
 __x64_sys_openat+0x136/0x160 fs/open.c:1263
 x64_sys_call+0x219/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:258
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f0c93310fb9
Code: 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 d0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f0c92e820b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f0c93450050 RCX: 00007f0c93310fb9
RDX: 0000000000000000 RSI: 0000000020000040 RDI: ffffffffffffff9c
RBP: 00007f0c93386b38 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f0c93450050 R15: 00007ffd682c57f8
 </TASK>
Modules linked in:
---[ end trace 0984b3ef6f0e75fd ]---
RIP: 0010:__d_entry_type include/linux/dcache.h:404 [inline]
RIP: 0010:d_is_miss include/linux/dcache.h:409 [inline]
RIP: 0010:d_is_negative include/linux/dcache.h:455 [inline]
RIP: 0010:atomic_open fs/namei.c:3349 [inline]
RIP: 0010:lookup_open fs/namei.c:3441 [inline]
RIP: 0010:open_last_lookups fs/namei.c:3540 [inline]
RIP: 0010:path_openat+0x11df/0x2f20 fs/namei.c:3747
Code: eb 0b e8 14 46 b6 ff 41 be f3 ff ff ff 48 89 df e8 16 8d 02 00 49 63 de eb 55 e8 fc 45 b6 ff 4c 8b 2c 24 48 89 d8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 9f 0d 00 00 44 8b 33 be 00 00 70 00 44
RSP: 0018:ffffc90000d77980 EFLAGS: 00010247
RAX: 0000000000000000 RBX: 0000000000000004 RCX: ffff88810dd593c0
RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff88810dd593c0
RBP: ffffc90000d77b90 R08: ffff88812046727f R09: 1ffff1102408ce4f
R10: dffffc0000000000 R11: ffffed102408ce50 R12: 0000000000000000
R13: ffffc90000d77c00 R14: 0000000000000000 R15: dffffc0000000000
FS:  00007f0c92e826c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0c92e81fd0 CR3: 000000010d790000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	eb 0b                	jmp    0xd
   2:	e8 14 46 b6 ff       	call   0xffb6461b
   7:	41 be f3 ff ff ff    	mov    $0xfffffff3,%r14d
   d:	48 89 df             	mov    %rbx,%rdi
  10:	e8 16 8d 02 00       	call   0x28d2b
  15:	49 63 de             	movslq %r14d,%rbx
  18:	eb 55                	jmp    0x6f
  1a:	e8 fc 45 b6 ff       	call   0xffb6461b
  1f:	4c 8b 2c 24          	mov    (%rsp),%r13
  23:	48 89 d8             	mov    %rbx,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 0f b6 04 38       	movzbl (%rax,%r15,1),%eax <-- trapping instruction
  2f:	84 c0                	test   %al,%al
  31:	0f 85 9f 0d 00 00    	jne    0xdd6
  37:	44 8b 33             	mov    (%rbx),%r14d
  3a:	be 00 00 70 00       	mov    $0x700000,%esi
  3f:	44                   	rex.R