------------[ cut here ]------------
kernel BUG at mm/filemap.c:867!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 9402 Comm: syz.1.890 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:__filemap_add_folio+0xf5b/0x11e0 mm/filemap.c:867
Code: 77 c8 ff 48 c7 c6 60 24 b9 8b 4c 89 ef e8 9d 28 11 00 90 0f 0b e8 a5 77 c8 ff 48 c7 c6 c0 24 b9 8b 4c 89 ef e8 86 28 11 00 90 <0f> 0b e8 8e 77 c8 ff 90 0f 0b 90 e9 f2 fb ff ff e8 80 77 c8 ff 48
RSP: 0018:ffffc90003307488 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88802593c880 RSI: ffffffff81f3173a RDI: ffff88802593ccc4
RBP: 0000000000112cc0 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff90ab6b97 R11: 1ffff11006bef08a R12: 0000000000000002
R13: ffffea0001f13bc0 R14: 0000000000000000 R15: 00000000000002f0
FS:  00007fe61bbd56c0(0000) GS:ffff8881246b5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000078755000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 filemap_add_folio+0x10e/0x220 mm/filemap.c:969
 ra_alloc_folio mm/readahead.c:448 [inline]
 page_cache_ra_order+0x5a7/0xd70 mm/readahead.c:506
 page_cache_sync_ra+0x4e9/0xa00 mm/readahead.c:619
 filemap_get_pages+0xb62/0x1c20 mm/filemap.c:2603
 filemap_splice_read+0x5cb/0xd60 mm/filemap.c:2991
 do_splice_read fs/splice.c:982 [inline]
 do_splice_read+0x282/0x370 fs/splice.c:956
 splice_direct_to_actor+0x2a1/0xa30 fs/splice.c:1086
 do_splice_direct_actor fs/splice.c:1204 [inline]
 do_splice_direct+0x174/0x240 fs/splice.c:1230
 do_sendfile+0xb06/0xe50 fs/read_write.c:1370
 __do_sys_sendfile64 fs/read_write.c:1431 [inline]
 __se_sys_sendfile64 fs/read_write.c:1417 [inline]
 __x64_sys_sendfile64+0x1d8/0x220 fs/read_write.c:1417
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe61d98ebe9
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:00007fe61bbd5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fe61dbc6090 RCX: 00007fe61d98ebe9
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 0000000000000009
RBP: 00007fe61da11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000200000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe61dbc6128 R14: 00007fe61dbc6090 R15: 00007ffc49313aa8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__filemap_add_folio+0xf5b/0x11e0 mm/filemap.c:867
Code: 77 c8 ff 48 c7 c6 60 24 b9 8b 4c 89 ef e8 9d 28 11 00 90 0f 0b e8 a5 77 c8 ff 48 c7 c6 c0 24 b9 8b 4c 89 ef e8 86 28 11 00 90 <0f> 0b e8 8e 77 c8 ff 90 0f 0b 90 e9 f2 fb ff ff e8 80 77 c8 ff 48
RSP: 0018:ffffc90003307488 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88802593c880 RSI: ffffffff81f3173a RDI: ffff88802593ccc4
RBP: 0000000000112cc0 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff90ab6b97 R11: 1ffff11006bef08a R12: 0000000000000002
R13: ffffea0001f13bc0 R14: 0000000000000000 R15: 00000000000002f0
FS:  00007fe61bbd56c0(0000) GS:ffff8881246b5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000078755000 CR4: 00000000003526f0