syzbot

 smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160
 kthread+0x388/0x470 kernel/kthread.c:436
 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
------------[ cut here ]------------
kernel BUG at mm/filemap.c:2190!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 0 PID: 12084 Comm: syz.2.828 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:find_lock_entries+0xa8a/0xa90 mm/filemap.c:2189
Code: 8b 7c 24 18 48 c7 c6 c0 d1 57 8b e8 c0 0a 28 ff 90 0f 0b e8 d8 bf c4 ff 48 8b 7c 24 18 48 c7 c6 60 ca 57 8b e8 a7 0a 28 ff 90 <0f> 0b 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000541f5a0 EFLAGS: 00010246
RAX: ffaf7ee9e89d7200 RBX: ffffc9000541f9e0 RCX: 0000000000000046
RDX: 0000000000000002 RSI: ffffffff8d7bd351 RDI: ffff88802b2e1e80
RBP: ffffc9000541f6f0 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1017104923 R12: ffffea000169fc00
R13: 0000000000000fce R14: 0000000000000000 R15: 0000000000000001
FS:  00007fbcede566c0(0000) GS:ffff88812633c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fac30a83e9c CR3: 000000003850c000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 mapping_try_invalidate+0x1ae/0x4c0 mm/truncate.c:545
 open_ctree+0x9bf/0x4220 fs/btrfs/disk-io.c:3317
 btrfs_fill_super fs/btrfs/super.c:981 [inline]
 btrfs_get_tree_super fs/btrfs/super.c:1944 [inline]
 btrfs_get_tree_subvol fs/btrfs/super.c:2087 [inline]
 btrfs_get_tree+0x1061/0x1930 fs/btrfs/super.c:2121
 vfs_get_tree+0x92/0x2a0 fs/super.c:1754
 fc_mount fs/namespace.c:1193 [inline]
 do_new_mount_fc fs/namespace.c:3763 [inline]
 do_new_mount+0x341/0xd30 fs/namespace.c:3839
 do_mount fs/namespace.c:4172 [inline]
 __do_sys_mount fs/namespace.c:4361 [inline]
 __se_sys_mount+0x31d/0x420 fs/namespace.c:4338
 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
RIP: 0033:0x7fbcefbfda0a
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fbcede55e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fbcede55ee0 RCX: 00007fbcefbfda0a
RDX: 0000200000000000 RSI: 00002000000015c0 RDI: 00007fbcede55ea0
RBP: 0000200000000000 R08: 00007fbcede55ee0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00002000000015c0
R13: 00007fbcede55ea0 R14: 000000000000559e R15: 0000200000001600
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:find_lock_entries+0xa8a/0xa90 mm/filemap.c:2189
Code: 8b 7c 24 18 48 c7 c6 c0 d1 57 8b e8 c0 0a 28 ff 90 0f 0b e8 d8 bf c4 ff 48 8b 7c 24 18 48 c7 c6 60 ca 57 8b e8 a7 0a 28 ff 90 <0f> 0b 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000541f5a0 EFLAGS: 00010246
RAX: ffaf7ee9e89d7200 RBX: ffffc9000541f9e0 RCX: 0000000000000046
RDX: 0000000000000002 RSI: ffffffff8d7bd351 RDI: ffff88802b2e1e80
RBP: ffffc9000541f6f0 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1017104923 R12: ffffea000169fc00
R13: 0000000000000fce R14: 0000000000000000 R15: 0000000000000001
FS:  00007fbcede566c0(0000) GS:ffff88812633c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fac30a83e9c CR3: 000000003850c000 CR4: 00000000003526f0