page last free pid 23 tgid 23 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1395 [inline]
 __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2895
 rcu_do_batch kernel/rcu/tree.c:2605 [inline]
 rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861
 handle_softirqs+0x286/0x870 kernel/softirq.c:579
 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:968
 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160
 kthread+0x711/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
------------[ cut here ]------------
kernel BUG at mm/filemap.c:868!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 17665 Comm: syz.4.4516 Not tainted 6.16.0-syzkaller-11322-g352af6a011d5 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:__filemap_add_folio+0x11ad/0x12f0 mm/filemap.c:867
Code: 5d c9 ff 4c 89 e7 48 c7 c6 e0 39 94 8b e8 6b b9 31 ff 90 0f 0b e8 c3 5d c9 ff 4c 89 e7 48 c7 c6 c0 30 94 8b e8 54 b9 31 ff 90 <0f> 0b e8 ac 5d c9 ff 4c 89 e7 48 c7 c6 e0 39 94 8b e8 3d b9 31 ff
RSP: 0018:ffffc90004a672c0 EFLAGS: 00010246
RAX: 607e19b670304f00 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8d9b1663 RDI: 00000000ffffffff
RBP: ffffc90004a67430 R08: ffffffff8fa32537 R09: 1ffffffff1f464a6
R10: dffffc0000000000 R11: fffffbfff1f464a7 R12: ffffea0001216d40
R13: dffffc0000000000 R14: ffffea0001216d48 R15: 0000000000000002
FS:  00007f5a7df876c0(0000) GS:ffff888125c2a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9f22a37a42 CR3: 0000000023bd7000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 filemap_add_folio+0xd5/0x270 mm/filemap.c:969
 ra_alloc_folio mm/readahead.c:448 [inline]
 page_cache_ra_order+0x643/0xd40 mm/readahead.c:506
 filemap_get_pages+0x43c/0x1ea0 mm/filemap.c:2603
 filemap_splice_read+0x4fc/0xbc0 mm/filemap.c:2991
 do_splice_read fs/splice.c:979 [inline]
 splice_direct_to_actor+0x4a9/0xcc0 fs/splice.c:1083
 do_splice_direct_actor fs/splice.c:1201 [inline]
 do_splice_direct+0x181/0x270 fs/splice.c:1227
 do_sendfile+0x4da/0x7e0 fs/read_write.c:1370
 __do_sys_sendfile64 fs/read_write.c:1431 [inline]
 __se_sys_sendfile64+0x13e/0x190 fs/read_write.c:1417
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5a7d18eb69
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:00007f5a7df87038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f5a7d3b5fa0 RCX: 00007f5a7d18eb69
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003
RBP: 00007f5a7d211df1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000201400 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f5a7d3b5fa0 R15: 00007ffe1442d938
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__filemap_add_folio+0x11ad/0x12f0 mm/filemap.c:867
Code: 5d c9 ff 4c 89 e7 48 c7 c6 e0 39 94 8b e8 6b b9 31 ff 90 0f 0b e8 c3 5d c9 ff 4c 89 e7 48 c7 c6 c0 30 94 8b e8 54 b9 31 ff 90 <0f> 0b e8 ac 5d c9 ff 4c 89 e7 48 c7 c6 e0 39 94 8b e8 3d b9 31 ff
RSP: 0018:ffffc90004a672c0 EFLAGS: 00010246
RAX: 607e19b670304f00 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8d9b1663 RDI: 00000000ffffffff
RBP: ffffc90004a67430 R08: ffffffff8fa32537 R09: 1ffffffff1f464a6
R10: dffffc0000000000 R11: fffffbfff1f464a7 R12: ffffea0001216d40
R13: dffffc0000000000 R14: ffffea0001216d48 R15: 0000000000000002
FS:  00007f5a7df876c0(0000) GS:ffff888125c2a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555585cfe608 CR3: 0000000023bd7000 CR4: 0000000000350ef0