 x64_sys_call+0x21f7/0x2200
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
------------[ cut here ]------------
kernel BUG at mm/filemap.c:1498!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 8682 Comm: syz.9.550 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:folio_unlock+0x13d/0x160
Code: 28 c9 ff 48 89 df 48 c7 c6 20 3e 94 8b e8 5b 67 31 ff 90 0f 0b e8 a3 28 c9 ff 48 89 df 48 c7 c6 40 34 94 8b e8 44 67 31 ff 90 <0f> 0b e8 8c 28 c9 ff 48 89 df 48 c7 c6 20 3e 94 8b e8 2d 67 31 ff
RSP: 0018:ffffc90002b7f888 EFLAGS: 00010246
RAX: 028d50ce0c50da00 RBX: ffffea0004ab0700 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8d9b9e62 RDI: 00000000ffffffff
RBP: ffffc90002b7fc48 R08: ffffffff8fa3a537 R09: 1ffffffff1f474a6
R10: dffffc0000000000 R11: fffffbfff1f474a7 R12: 1ffffd40009560e1
R13: 057ff20000000020 R14: ffffea0004ab0708 R15: dffffc0000000000
FS:  00007f895cd6a6c0(0000) GS:ffff8880b8615000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffea5069678 CR3: 0000000038012000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 netfs_perform_write+0x14fc/0x1ae0
 netfs_file_write_iter+0x17d/0x4a0
 vfs_write+0x5c9/0xb30
 ksys_write+0x145/0x250
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f895bf8eba9
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:00007f895cd6a038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f895c1d5fa0 RCX: 00007f895bf8eba9
RDX: 000000000000003c RSI: 0000200000000340 RDI: 0000000000000009
RBP: 00007f895c011e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f895c1d6038 R14: 00007f895c1d5fa0 R15: 00007ffe58ffa458
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:folio_unlock+0x13d/0x160
Code: 28 c9 ff 48 89 df 48 c7 c6 20 3e 94 8b e8 5b 67 31 ff 90 0f 0b e8 a3 28 c9 ff 48 89 df 48 c7 c6 40 34 94 8b e8 44 67 31 ff 90 <0f> 0b e8 8c 28 c9 ff 48 89 df 48 c7 c6 20 3e 94 8b e8 2d 67 31 ff
RSP: 0018:ffffc90002b7f888 EFLAGS: 00010246
RAX: 028d50ce0c50da00 RBX: ffffea0004ab0700 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8d9b9e62 RDI: 00000000ffffffff
RBP: ffffc90002b7fc48 R08: ffffffff8fa3a537 R09: 1ffffffff1f474a6
R10: dffffc0000000000 R11: fffffbfff1f474a7 R12: 1ffffd40009560e1
R13: 057ff20000000020 R14: ffffea0004ab0708 R15: dffffc0000000000
FS:  00007f895cd6a6c0(0000) GS:ffff8881a3c15000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffea5069678 CR3: 0000000038012000 CR4: 00000000000006f0
