init_page_owner+0x2e/0x600 mm/page_owner.c:127
 invoke_init_callbacks mm/page_ext.c:152 [inline]
 page_ext_init+0x500/0x540 mm/page_ext.c:490
 mm_core_init+0x51/0x70 mm/mm_init.c:2735
------------[ cut here ]------------
kernel BUG at mm/filemap.c:859!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 10582 Comm: syz.4.1294 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:__filemap_add_folio+0x11bc/0x1350 mm/filemap.c:858
Code: 3e c5 ff 4c 89 e7 48 c7 c6 80 a8 d7 8b e8 8c c1 27 ff 90 0f 0b e8 d4 3e c5 ff 4c 89 e7 48 c7 c6 20 9d d7 8b e8 75 c1 27 ff 90 <0f> 0b e8 bd 3e c5 ff 4c 89 e7 48 c7 c6 80 a8 d7 8b e8 5e c1 27 ff
RSP: 0018:ffffc9000396f1e0 EFLAGS: 00010246
RAX: 726a2c65147a6e00 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8def311b RDI: 00000000ffffffff
RBP: ffffc9000396f360 R08: ffffffff90118cb7 R09: 1ffffffff2023196
R10: dffffc0000000000 R11: fffffbfff2023197 R12: ffffea0001469d00
R13: dffffc0000000000 R14: ffffea0001469d08 R15: 0000000000000004
FS:  00007fcaedc7b6c0(0000) GS:ffff888125464000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055ff1c1701e0 CR3: 000000002133b000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 filemap_add_folio+0x264/0x530 mm/filemap.c:966
 ra_alloc_folio mm/readahead.c:456 [inline]
 page_cache_ra_order+0x6b5/0xeb0 mm/readahead.c:515
 do_sync_mmap_readahead+0x6ad/0x8e0 mm/filemap.c:3400
 filemap_fault+0x6e2/0x1320 mm/filemap.c:3549
 __do_fault+0x138/0x390 mm/memory.c:5363
 do_read_fault mm/memory.c:5798 [inline]
 do_fault mm/memory.c:5932 [inline]
 do_pte_missing+0x228f/0x3750 mm/memory.c:4477
 handle_pte_fault mm/memory.c:6316 [inline]
 __handle_mm_fault mm/memory.c:6454 [inline]
 handle_mm_fault+0x1bec/0x3310 mm/memory.c:6623
 faultin_page mm/gup.c:1126 [inline]
 __get_user_pages+0x165b/0x29d0 mm/gup.c:1428
 populate_vma_page_range+0x2be/0x3c0 mm/gup.c:1860
 __mm_populate+0x25f/0x390 mm/gup.c:1963
 do_mlock+0x646/0x750 mm/mlock.c:653
 __do_sys_mlock mm/mlock.c:661 [inline]
 __se_sys_mlock mm/mlock.c:659 [inline]
 __x64_sys_mlock+0x60/0x70 mm/mlock.c:659
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcaecd9c799
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:00007fcaedc7b028 EFLAGS: 00000246 ORIG_RAX: 0000000000000095
RAX: ffffffffffffffda RBX: 00007fcaed015fa0 RCX: 00007fcaecd9c799
RDX: 0000000000000000 RSI: 0000000000800000 RDI: 0000200000000000
RBP: 00007fcaece32bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fcaed016038 R14: 00007fcaed015fa0 R15: 00007ffd9d2f4728
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__filemap_add_folio+0x11bc/0x1350 mm/filemap.c:858
Code: 3e c5 ff 4c 89 e7 48 c7 c6 80 a8 d7 8b e8 8c c1 27 ff 90 0f 0b e8 d4 3e c5 ff 4c 89 e7 48 c7 c6 20 9d d7 8b e8 75 c1 27 ff 90 <0f> 0b e8 bd 3e c5 ff 4c 89 e7 48 c7 c6 80 a8 d7 8b e8 5e c1 27 ff
RSP: 0018:ffffc9000396f1e0 EFLAGS: 00010246
RAX: 726a2c65147a6e00 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8def311b RDI: 00000000ffffffff
RBP: ffffc9000396f360 R08: ffffffff90118cb7 R09: 1ffffffff2023196
R10: dffffc0000000000 R11: fffffbfff2023197 R12: ffffea0001469d00
R13: dffffc0000000000 R14: ffffea0001469d08 R15: 0000000000000004
FS:  00007fcaedc7b6c0(0000) GS:ffff888125464000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30321ff8 CR3: 000000002133b000 CR4: 0000000000350ef0