 task_work_run+0x1d4/0x260
 exit_to_user_mode_loop+0xec/0x110
 do_syscall_64+0x2bd/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
------------[ cut here ]------------
kernel BUG at mm/filemap.c:868!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 9070 Comm: syz.4.661 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:__filemap_add_folio+0x11ad/0x12f0
Code: 4d c9 ff 4c 89 e7 48 c7 c6 e0 3b 94 8b e8 ab 9b 31 ff 90 0f 0b e8 a3 4d c9 ff 4c 89 e7 48 c7 c6 c0 32 94 8b e8 94 9b 31 ff 90 <0f> 0b e8 8c 4d c9 ff 4c 89 e7 48 c7 c6 e0 3b 94 8b e8 7d 9b 31 ff
RSP: 0018:ffffc90002d4f2c0 EFLAGS: 00010246
RAX: ec977bcd681b7e00 RBX: 0000000000000000 RCX: ec977bcd681b7e00
RDX: 0000000000000001 RSI: ffffffff8dba7696 RDI: ffff888108ec0000
RBP: ffffc90002d4f430 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bfa1f4 R12: ffffea0004581f40
R13: dffffc0000000000 R14: ffffea0004581f48 R15: 0000000000000002
FS:  00007f53261386c0(0000) GS:ffff8881a3c18000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd567caff8 CR3: 0000000024b60000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 filemap_add_folio+0xd5/0x270
 page_cache_ra_order+0x643/0xd40
 filemap_get_pages+0x43c/0x1ea0
 filemap_splice_read+0x581/0xc60
 splice_direct_to_actor+0x4a9/0xcc0
 do_splice_direct+0x181/0x270
 do_sendfile+0x4da/0x7e0
 __se_sys_sendfile64+0x13e/0x190
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f532538ebe9
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:00007f5326138038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f53255c5fa0 RCX: 00007f532538ebe9
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000005
RBP: 00007f5325411e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020fffe82 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f53255c6038 R14: 00007f53255c5fa0 R15: 00007ffc9309c678
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__filemap_add_folio+0x11ad/0x12f0
Code: 4d c9 ff 4c 89 e7 48 c7 c6 e0 3b 94 8b e8 ab 9b 31 ff 90 0f 0b e8 a3 4d c9 ff 4c 89 e7 48 c7 c6 c0 32 94 8b e8 94 9b 31 ff 90 <0f> 0b e8 8c 4d c9 ff 4c 89 e7 48 c7 c6 e0 3b 94 8b e8 7d 9b 31 ff
RSP: 0018:ffffc90002d4f2c0 EFLAGS: 00010246
RAX: ec977bcd681b7e00 RBX: 0000000000000000 RCX: ec977bcd681b7e00
RDX: 0000000000000001 RSI: ffffffff8dba7696 RDI: ffff888108ec0000
RBP: ffffc90002d4f430 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bfa1f4 R12: ffffea0004581f40
R13: dffffc0000000000 R14: ffffea0004581f48 R15: 0000000000000002
FS:  00007f53261386c0(0000) GS:ffff8881a3c18000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd567caff8 CR3: 0000000024b60000 CR4: 00000000000006f0
