BUG: unable to handle page fault for address: fffffffffffffff1
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 72ac067 P4D 72ac067 PUD 72ae067 PMD 0 
Oops: Oops: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 1 UID: 0 PID: 1322 Comm: syz.5.284 Not tainted syzkaller #0 5955844fc29c22fca25b4dfb8d213a6f46673644
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:filemap_read_folio+0xda/0x2c0 mm/filemap.c:2474
Code: 44 24 40 00 00 00 00 48 81 e3 00 02 00 00 0f 85 86 01 00 00 e8 97 d7 c8 ff 48 8b 7c 24 18 4c 89 f6 4d 89 fb 41 ba 20 44 56 9a <45> 03 53 f1 74 02 0f 0b 2e e8 70 20 43 1e 41 89 c7 31 ff 44 89 fe
RSP: 0018:ffffc90002a3f920 EFLAGS: 00010293
RAX: ffffffff81bd2869 RBX: 0000000000000000 RCX: ffff88812b3f9300
RDX: 0000000000000000 RSI: ffffea0004ba9300 RDI: ffff88811e91c000
RBP: ffffc90002a3f9e0 R08: ffffea0004ba9307 R09: 1ffffd4000975260
R10: 000000009a564420 R11: 0000000000000000 R12: 1ffff92000547f28
R13: 1ffffd4000975260 R14: ffffea0004ba9300 R15: 0000000000000000
FS:  00007fdc34bd56c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffffffffffff1 CR3: 00000001191b4000 CR4: 00000000003526b0
Call Trace:
 <TASK>
 do_read_cache_folio+0x2b8/0x4d0 mm/filemap.c:3987
 read_cache_folio+0x54/0x90 mm/filemap.c:4019
 freader_get_folio+0x471/0x700 lib/buildid.c:77
 freader_fetch+0xa4/0x590 lib/buildid.c:120
 __build_id_parse+0x131/0x790 lib/buildid.c:305
 build_id_parse+0x2e/0x40 lib/buildid.c:359
 do_procmap_query fs/proc/task_mmu.c:674 [inline]
 procfs_procmap_ioctl+0x7f6/0xd10 fs/proc/task_mmu.c:753
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0x135/0x1b0 fs/ioctl.c:893
 __x64_sys_ioctl+0x7f/0xa0 fs/ioctl.c:893
 x64_sys_call+0x1878/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:17
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x58/0xf0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fdc33d8e929
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:00007fdc34bd5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fdc33fb6080 RCX: 00007fdc33d8e929
RDX: 0000200000000180 RSI: 00000000c0686611 RDI: 0000000000000004
RBP: 00007fdc33e10b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fdc33fb6080 R15: 00007ffcf88bfc78
 </TASK>
Modules linked in:
CR2: fffffffffffffff1
---[ end trace 0000000000000000 ]---
RIP: 0010:filemap_read_folio+0xda/0x2c0 mm/filemap.c:2474
Code: 44 24 40 00 00 00 00 48 81 e3 00 02 00 00 0f 85 86 01 00 00 e8 97 d7 c8 ff 48 8b 7c 24 18 4c 89 f6 4d 89 fb 41 ba 20 44 56 9a <45> 03 53 f1 74 02 0f 0b 2e e8 70 20 43 1e 41 89 c7 31 ff 44 89 fe
RSP: 0018:ffffc90002a3f920 EFLAGS: 00010293
RAX: ffffffff81bd2869 RBX: 0000000000000000 RCX: ffff88812b3f9300
RDX: 0000000000000000 RSI: ffffea0004ba9300 RDI: ffff88811e91c000
RBP: ffffc90002a3f9e0 R08: ffffea0004ba9307 R09: 1ffffd4000975260
R10: 000000009a564420 R11: 0000000000000000 R12: 1ffff92000547f28
R13: 1ffffd4000975260 R14: ffffea0004ba9300 R15: 0000000000000000
FS:  00007fdc34bd56c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffffffffffff1 CR3: 00000001191b4000 CR4: 00000000003526b0
----------------
Code disassembly (best guess):
   0:	44 24 40             	rex.R and $0x40,%al
   3:	00 00                	add    %al,(%rax)
   5:	00 00                	add    %al,(%rax)
   7:	48 81 e3 00 02 00 00 	and    $0x200,%rbx
   e:	0f 85 86 01 00 00    	jne    0x19a
  14:	e8 97 d7 c8 ff       	call   0xffc8d7b0
  19:	48 8b 7c 24 18       	mov    0x18(%rsp),%rdi
  1e:	4c 89 f6             	mov    %r14,%rsi
  21:	4d 89 fb             	mov    %r15,%r11
  24:	41 ba 20 44 56 9a    	mov    $0x9a564420,%r10d
* 2a:	45 03 53 f1          	add    -0xf(%r11),%r10d <-- trapping instruction
  2e:	74 02                	je     0x32
  30:	0f 0b                	ud2
  32:	2e e8 70 20 43 1e    	cs call 0x1e4320a8
  38:	41 89 c7             	mov    %eax,%r15d
  3b:	31 ff                	xor    %edi,%edi
  3d:	44 89 fe             	mov    %r15d,%esi