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
------------[ cut here ]------------
kernel BUG at mm/filemap.c:859!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 15248 Comm: syz.2.3047 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
RIP: 0010:__filemap_add_folio+0x1204/0x13a0 mm/filemap.c:858
Code: 5a c5 ff 4c 89 e7 48 c7 c6 20 a5 d7 8b e8 e4 d0 27 ff 90 0f 0b e8 ac 5a c5 ff 4c 89 e7 48 c7 c6 c0 99 d7 8b e8 cd d0 27 ff 90 <0f> 0b e8 95 5a c5 ff 4c 89 e7 48 c7 c6 20 a5 d7 8b e8 b6 d0 27 ff
RSP: 0018:ffffc90003af75c0 EFLAGS: 00010246
RAX: 011e8106a75ded00 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8def38f2 RDI: 00000000ffffffff
RBP: ffffc90003af7740 R08: ffffffff901195b7 R09: 1ffffffff20232b6
R10: dffffc0000000000 R11: fffffbfff20232b7 R12: ffffea0000cee9c0
R13: dffffc0000000000 R14: ffff88802392c200 R15: 0000000000000004
FS:  000055557b875500(0000) GS:ffff888125560000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6698de96c0 CR3: 000000002a136000 CR4: 00000000003526f0
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:3405
 filemap_fault+0x6e2/0x1320 mm/filemap.c:3554
 __do_fault+0x138/0x390 mm/memory.c:5364
 do_shared_fault mm/memory.c:5863 [inline]
 do_fault mm/memory.c:5937 [inline]
 do_pte_missing+0x5c4/0x3750 mm/memory.c:4477
 handle_pte_fault mm/memory.c:6317 [inline]
 __handle_mm_fault mm/memory.c:6455 [inline]
 handle_mm_fault+0x1bec/0x3310 mm/memory.c:6624
 do_user_addr_fault+0xa73/0x1340 arch/x86/mm/fault.c:1334
 handle_page_fault arch/x86/mm/fault.c:1474 [inline]
 exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1527
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x7fddd596b007
Code: ce 48 ff c7 48 01 fe 48 8d 54 11 80 0f 1f 80 00 00 00 00 c5 fe 6f 0e c5 fe 6f 56 20 c5 fe 6f 5e 40 c5 fe 6f 66 60 48 83 ee 80 <c5> fd 7f 0f c5 fd 7f 57 20 c5 fd 7f 5f 40 c5 fd 7f 67 60 48 83 ef
RSP: 002b:00007ffee55a22f8 EFLAGS: 00010207
RAX: 000020000000c280 RBX: 0000000000000004 RCX: 000020000000c280
RDX: 000020000000e200 RSI: 0000001b2ef20633 RDI: 000020000000c2a0
RBP: fffffffffffffffe R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000002000 R11: 0000000000000002 R12: 00007ffee55a2420
R13: 00007fddd5c1618c R14: 00000000000a78d3 R15: 00007ffee55a2400
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__filemap_add_folio+0x1204/0x13a0 mm/filemap.c:858
Code: 5a c5 ff 4c 89 e7 48 c7 c6 20 a5 d7 8b e8 e4 d0 27 ff 90 0f 0b e8 ac 5a c5 ff 4c 89 e7 48 c7 c6 c0 99 d7 8b e8 cd d0 27 ff 90 <0f> 0b e8 95 5a c5 ff 4c 89 e7 48 c7 c6 20 a5 d7 8b e8 b6 d0 27 ff
RSP: 0018:ffffc90003af75c0 EFLAGS: 00010246
RAX: 011e8106a75ded00 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8def38f2 RDI: 00000000ffffffff
RBP: ffffc90003af7740 R08: ffffffff901195b7 R09: 1ffffffff20232b6
R10: dffffc0000000000 R11: fffffbfff20232b7 R12: ffffea0000cee9c0
R13: dffffc0000000000 R14: ffff88802392c200 R15: 0000000000000004
FS:  000055557b875500(0000) GS:ffff888125560000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3e221a CR3: 000000002a136000 CR4: 00000000003526f0