From: Edward Adam Davis <eadavis@qq.com>
To: syzbot+ddf8715339c89280b6fc@syzkaller.appspotmail.com
Cc: jack@suse.com, linux-kernel@vger.kernel.org,
syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [udf?] general protection fault in udf_read_folio
Date: Sun, 22 Sep 2024 12:56:56 +0800 [thread overview]
Message-ID: <tencent_8F67C9C6DBD2F6867309802EEE2ED84C8406@qq.com> (raw)
In-Reply-To: <66eefd0c.050a0220.3195df.0061.GAE@google.com>
In erofs_bread(),
folio = read_mapping_folio(buf->mapping, index, NULL);
file is NULL, it triger this issue.
#syz test
diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index 4726a4d014b6..fb8121edee8f 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -220,7 +220,7 @@ static void udf_adinicb_read_folio(struct folio *folio)
static int udf_read_folio(struct file *file, struct folio *folio)
{
- struct udf_inode_info *iinfo = UDF_I(file_inode(file));
+ struct udf_inode_info *iinfo = UDF_I(folio->mapping->host);
if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) {
udf_adinicb_read_folio(folio);
next prev parent reply other threads:[~2024-09-22 5:03 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-09-21 17:06 syzbot
2024-09-22 4:56 ` Edward Adam Davis [this message]
2024-09-22 5:17 ` syzbot
2024-10-21 23:47 ` [syzbot] retest repro if bug still valid syzbot
[not found] <40b42775-ca29-4c63-b13c-7b02911379a1@gmail.com>
2024-10-22 0:04 ` [syzbot] [udf?] general protection fault in udf_read_folio syzbot
2024-10-22 0:19 ` Gianfranco Trad
2024-10-22 9:02 ` Jan Kara
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