From: Christian Brauner <brauner@kernel.org>
To: syzbot <syzbot+f98189ed18c1f5f32e00@syzkaller.appspotmail.com>
Cc: jack@suse.cz, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com,
viro@zeniv.linux.org.uk
Subject: Re: [syzbot] [hfs?] kernel BUG in may_open (3)
Date: Mon, 12 Jan 2026 10:27:14 +0100 [thread overview]
Message-ID: <20260112-apokalypse-sachte-846a6175c176@brauner> (raw)
In-Reply-To: <6964b615.050a0220.eaf7.0093.GAE@google.com>
On Mon, Jan 12, 2026 at 12:51:33AM -0800, syzbot wrote:
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit: b6151c4e60e5 Merge tag 'erofs-for-6.19-rc5-fixes' of git:/..
> git tree: upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=15d45922580000
> kernel config: https://syzkaller.appspot.com/x/.config?x=7b058fb1d7dbe6b1
> dashboard link: https://syzkaller.appspot.com/bug?extid=f98189ed18c1f5f32e00
> compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14a7d19a580000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16a2f19a580000
>
> Downloadable assets:
> disk image: https://storage.googleapis.com/syzbot-assets/6eb5179ada01/disk-b6151c4e.raw.xz
> vmlinux: https://storage.googleapis.com/syzbot-assets/bc48d1a68ed0/vmlinux-b6151c4e.xz
> kernel image: https://storage.googleapis.com/syzbot-assets/061d4fb696a7/bzImage-b6151c4e.xz
> mounted in repro: https://storage.googleapis.com/syzbot-assets/df739de73585/mount_0.gz
>
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+f98189ed18c1f5f32e00@syzkaller.appspotmail.com
>
> loop0: detected capacity change from 0 to 1024
> VFS_BUG_ON_INODE(!IS_ANON_FILE(inode)) encountered for inode ffff8880384b01e0
> fs hfsplus mode 0 opflags 0x4 flags 0x0 state 0x70 count 2
This is hfsplus adding inodes with a non-valid mode.
next prev parent reply other threads:[~2026-01-12 9:27 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-12 8:51 syzbot
2026-01-12 9:27 ` Christian Brauner [this message]
2026-01-12 9:39 ` [PATCH v3] hfsplus: pretend special inodes as regular files Tetsuo Handa
2026-01-13 8:55 ` Christian Brauner
2026-01-13 17:18 ` Viacheslav Dubeyko
2026-01-14 16:05 ` Christian Brauner
2026-02-01 4:03 ` Tetsuo Handa
2026-02-02 17:30 ` Viacheslav Dubeyko
2026-02-02 21:50 ` Tetsuo Handa
2026-01-12 10:35 ` [syzbot] [hfs?] kernel BUG in may_open (3) Dmitry Vyukov
2026-01-12 9:31 ` Forwarded: Private message regarding: " syzbot
2026-02-07 9:48 ` Forwarded: " syzbot
[not found] <e5eff2fe-8bc8-494e-89bf-365016e3f20bn@googlegroups.com>
2026-01-12 9:40 ` syzbot
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