From: syzbot <syzbot+83693dbba860b4f2e549@syzkaller.appspotmail.com>
To: linux-kernel@vger.kernel.org
Subject: Re: [syzbot] [reiserfs?] possible deadlock in chmod_common (2)
Date: Thu, 21 Dec 2023 19:06:58 -0800 [thread overview]
Message-ID: <0000000000006a3904060d1082e7@google.com> (raw)
In-Reply-To: <000000000000e32f3c0609cb98d0@google.com>
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Subject: [reiserfs?] possible deadlock in chmod_common (2)
Author: lizhi.xu@windriver.com
#syz test https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git aafe7ad77b91
diff --git a/fs/reiserfs/ioctl.c b/fs/reiserfs/ioctl.c
index dd33f8cc6eda..cf219a998a89 100644
--- a/fs/reiserfs/ioctl.c
+++ b/fs/reiserfs/ioctl.c
@@ -100,7 +100,9 @@ long reiserfs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
err = -EPERM;
break;
}
+ reiserfs_write_unlock(inode->i_sb);
err = mnt_want_write_file(filp);
+ reiserfs_write_lock(inode->i_sb);
if (err)
break;
if (get_user(inode->i_generation, (int __user *)arg)) {
next prev parent reply other threads:[~2023-12-22 3:06 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-10 12:38 [syzbot] [reiserfs?] possible deadlock in chmod_common (2) syzbot
2023-12-21 4:05 ` syzbot
2023-12-22 5:26 ` [PATCH arm64] reiserfs: fix deadlock in chmod_common Lizhi Xu
2023-12-22 3:06 ` syzbot [this message]
[not found] <20231222030654.849208-1-lizhi.xu@windriver.com>
2023-12-22 4:19 ` [syzbot] [reiserfs?] possible deadlock in chmod_common (2) syzbot
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