 do_sendfile+0x4da/0x7e0
 __se_sys_sendfile64+0x13e/0x190
 do_syscall_64+0xfa/0xfa0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
------------[ cut here ]------------
kernel BUG at mm/filemap.c:872!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 25994 Comm: syz.3.7430 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: 15 c8 ff 4c 89 e7 48 c7 c6 e0 63 74 8b e8 9b eb 2f ff 90 0f 0b e8 b3 15 c8 ff 4c 89 e7 48 c7 c6 c0 5a 74 8b e8 84 eb 2f ff 90 <0f> 0b e8 9c 15 c8 ff 4c 89 e7 48 c7 c6 e0 63 74 8b e8 6d eb 2f ff
RSP: 0018:ffffc900044272c0 EFLAGS: 00010246
RAX: 6b1877a255a3e800 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8d70eee0 RDI: 00000000ffffffff
RBP: ffffc90004427428 R08: ffffffff8f7cf777 R09: 1ffffffff1ef9eee
R10: dffffc0000000000 R11: fffffbfff1ef9eef R12: ffffea00046de140
R13: dffffc0000000000 R14: ffffea00046de148 R15: 0000000000000002
FS:  00007f83f55aa6c0(0000) GS:ffff8882a9f34000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2dd23ffc CR3: 00000001bace4000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 filemap_add_folio+0x26d/0x540
 page_cache_ra_order+0x6bc/0xe70
 filemap_get_pages+0x468/0x1de0
 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/0xfa0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f83f478f749
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:00007f83f55aa038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f83f49e5fa0 RCX: 00007f83f478f749
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003
RBP: 00007f83f4813f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000201f00 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f83f49e6038 R14: 00007f83f49e5fa0 R15: 00007fff6af44158
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__filemap_add_folio+0x11ad/0x12f0
Code: 15 c8 ff 4c 89 e7 48 c7 c6 e0 63 74 8b e8 9b eb 2f ff 90 0f 0b e8 b3 15 c8 ff 4c 89 e7 48 c7 c6 c0 5a 74 8b e8 84 eb 2f ff 90 <0f> 0b e8 9c 15 c8 ff 4c 89 e7 48 c7 c6 e0 63 74 8b e8 6d eb 2f ff
RSP: 0018:ffffc900044272c0 EFLAGS: 00010246
RAX: 6b1877a255a3e800 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8d70eee0 RDI: 00000000ffffffff
RBP: ffffc90004427428 R08: ffffffff8f7cf777 R09: 1ffffffff1ef9eee
R10: dffffc0000000000 R11: fffffbfff1ef9eef R12: ffffea00046de140
R13: dffffc0000000000 R14: ffffea00046de148 R15: 0000000000000002
FS:  00007f83f55aa6c0(0000) GS:ffff88818eb34000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f12c3fb7198 CR3: 00000001bace4000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
