 do_new_mount+0x2a2/0x9e0
 __se_sys_mount+0x317/0x410
 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: 1 UID: 0 PID: 9440 Comm: syz.1.708 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:ffffc9000177f888 EFLAGS: 00010246
RAX: 6c430918cde2e900 RBX: ffffea0000d71f80 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8d9b9e5a RDI: 00000000ffffffff
RBP: ffffc9000177fc48 R08: ffffffff8fa3a537 R09: 1ffffffff1f474a6
R10: dffffc0000000000 R11: fffffbfff1f474a7 R12: 1ffffd40001ae3f1
R13: 00fff20000000020 R14: ffffea0000d71f88 R15: dffffc0000000000
FS:  00007fb89af606c0(0000) GS:ffff8881a3c15000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb8908df000 CR3: 000000010acd2000 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: 0033:0x7fb89a18eba9
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:00007fb89af60038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fb89a3d5fa0 RCX: 00007fb89a18eba9
RDX: 000000000000003c RSI: 0000200000000340 RDI: 0000000000000009
RBP: 00007fb89a211e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb89a3d6038 R14: 00007fb89a3d5fa0 R15: 00007ffc37fd9b58
 </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:ffffc9000177f888 EFLAGS: 00010246
RAX: 6c430918cde2e900 RBX: ffffea0000d71f80 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8d9b9e5a RDI: 00000000ffffffff
RBP: ffffc9000177fc48 R08: ffffffff8fa3a537 R09: 1ffffffff1f474a6
R10: dffffc0000000000 R11: fffffbfff1f474a7 R12: 1ffffd40001ae3f1
R13: 00fff20000000020 R14: ffffea0000d71f88 R15: dffffc0000000000
FS:  00007fb89af606c0(0000) GS:ffff8881a3c15000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055e112615950 CR3: 000000010acd2000 CR4: 00000000000006f0
