[moderation/CI] Re: exfat: add limited FALLOC_FL_ZERO_RANGE support

[syzbot ci]

syzbot ci has tested the following series

[v0] exfat: add limited FALLOC_FL_ZERO_RANGE support
https://lore.kernel.org/all/20260319043553...@dev.snart.me
* [PATCH v0 1/1] exfat: add limited FALLOC_FL_ZERO_RANGE support

and found the following issue:
WARNING: lock held when returning to user space in exfat_fallocate

Full report is available here:
https://ci.syzbot.org/series/a58a79c9-a4e7-40b7-a5d3-8d4da244a00c

***

WARNING: lock held when returning to user space in exfat_fallocate

tree: linux-next
URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/next/linux-next
base: b5d083a3ed1e2798396d5e491432e887da8d4a06
arch: amd64
compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
config: https://ci.syzbot.org/builds/6a43cfef-5b9a-4b39-a6b0-7d34bfb0f7b7/config
C repro: https://ci.syzbot.org/findings/87d27fd2-e5b7-4174-8faf-3b746f7aa18d/c_repro
syz repro: https://ci.syzbot.org/findings/87d27fd2-e5b7-4174-8faf-3b746f7aa18d/syz_repro

exFAT-fs (loop0): failed to load upcase table (idx : 0x0000fd4f, chksum : 0x395e47cf, utbl_chksum : 0xe619d30d)
exFAT-fs (loop0): valid_size(150994954) is greater than size(10)
================================================
WARNING: lock held when returning to user space!
syzkaller #0 Not tainted
------------------------------------------------
syz.0.17/5982 is leaving the kernel with locks still held!
1 lock held by syz.0.17/5982:
#0: ffff8881bc75c110 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:1028 [inline]
#0: ffff8881bc75c110 (&sb->s_type->i_mutex_key#24){+.+.}-{4:4}, at: exfat_fallocate+0x163/0x4e0 fs/exfat/file.c:131


***

If these findings have caused you to resend the series or submit a
separate fix, please add the following tag to your commit message:
Tested-by: syz...@syzkaller.appspotmail.com

---
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[Aleksandr Nogikh]

#syz upstream

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