From: Edward Adam Davis <eadavis@qq.com>
To: syzbot+1a8e2b31f2ac9bd3d148@syzkaller.appspotmail.com
Cc: linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] [f2fs?] KASAN: null-ptr-deref Write in f2fs_stop_gc_thread
Date: Sat, 27 Jul 2024 12:07:50 +0800 [thread overview]
Message-ID: <tencent_411BA74B731B5425C2BA5ABB2C33119EE808@qq.com> (raw)
In-Reply-To: <0000000000005c7ccb061e032b9b@google.com>
use s_umount read lock sync remount and shutdown
#syz test: upstream 2c9b3512402e
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index c1ad9b278c47..3940c0b11868 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -2280,7 +2280,9 @@ int f2fs_do_shutdown(struct f2fs_sb_info *sbi, unsigned int flag,
if (readonly)
goto out;
+ down_read(&sb->s_umount);
f2fs_stop_gc_thread(sbi);
+ up_read(&sb->s_umount);
f2fs_stop_discard_thread(sbi);
f2fs_drop_discard_cmd(sbi);
next prev parent reply other threads:[~2024-07-27 4:16 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-24 19:20 syzbot
2024-07-25 1:32 ` [syzbot] " syzbot
2024-07-25 2:21 ` syzbot
2024-07-25 5:08 ` syzbot
2024-07-25 7:27 ` syzbot
2024-07-25 8:08 ` syzbot
2024-07-25 12:49 ` syzbot
2024-07-25 13:19 ` syzbot
2024-07-25 13:53 ` syzbot
2024-07-26 11:08 ` Edward Adam Davis
2024-07-26 17:02 ` syzbot
2024-07-27 2:08 ` Edward Adam Davis
2024-07-27 2:48 ` syzbot
2024-07-27 3:38 ` Edward Adam Davis
2024-07-27 4:01 ` syzbot
2024-07-27 4:07 ` Edward Adam Davis [this message]
2024-07-27 5:13 ` syzbot
2024-07-27 5:56 ` [PATCH] f2fs: Add mutex to prevent gc task from being accessed before initialization Edward Adam Davis
[not found] <20240725013244.474343-1-lizhi.xu@windriver.com>
2024-07-25 1:54 ` [syzbot] [f2fs?] KASAN: null-ptr-deref Write in f2fs_stop_gc_thread syzbot
[not found] <20240725022132.965591-1-lizhi.xu@windriver.com>
2024-07-25 3:30 ` syzbot
[not found] <20240725050750.3007233-1-lizhi.xu@windriver.com>
2024-07-25 6:54 ` syzbot
[not found] <20240725072746.503703-1-lizhi.xu@windriver.com>
2024-07-25 8:04 ` syzbot
[not found] <20240725080829.841010-1-lizhi.xu@windriver.com>
2024-07-25 12:27 ` syzbot
[not found] <20240725124919.3618893-1-lizhi.xu@windriver.com>
2024-07-25 13:06 ` syzbot
[not found] <20240725131923.3802594-1-lizhi.xu@windriver.com>
2024-07-25 13:47 ` syzbot
[not found] <20240725135334.4018863-1-lizhi.xu@windriver.com>
2024-07-25 14:30 ` syzbot
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=tencent_411BA74B731B5425C2BA5ABB2C33119EE808@qq.com \
--to=eadavis@qq.com \
--cc=linux-kernel@vger.kernel.org \
--cc=syzbot+1a8e2b31f2ac9bd3d148@syzkaller.appspotmail.com \
--cc=syzkaller-bugs@googlegroups.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®