From: Gao Xiang <hsiangkao@linux.alibaba.com>
To: Baokun Li <libaokun1@huawei.com>, linux-erofs@lists.ozlabs.org
Cc: brauner@kernel.org, yangerkun@huawei.com,
linux-kernel@vger.kernel.org, huyue2@coolpad.com,
viro@zeniv.linux.org.uk
Subject: Re: [PATCH -next v3 2/2] erofs: reliably distinguish block based and fscache mode
Date: Sun, 28 Apr 2024 15:17:33 +0800 [thread overview]
Message-ID: <bc0119e6-3f21-4fc2-9deb-51bc2ca8749f@linux.alibaba.com> (raw)
In-Reply-To: <20240419123611.947084-3-libaokun1@huawei.com>
On 2024/4/19 20:36, Baokun Li wrote:
> From: Christian Brauner <brauner@kernel.org>
>
> When erofs_kill_sb() is called in block dev based mode, s_bdev may not
> have been initialised yet, and if CONFIG_EROFS_FS_ONDEMAND is enabled,
> it will be mistaken for fscache mode, and then attempt to free an anon_dev
> that has never been allocated, triggering the following warning:
>
> ============================================
> ida_free called for id=0 which is not allocated.
> WARNING: CPU: 14 PID: 926 at lib/idr.c:525 ida_free+0x134/0x140
> Modules linked in:
> CPU: 14 PID: 926 Comm: mount Not tainted 6.9.0-rc3-dirty #630
> RIP: 0010:ida_free+0x134/0x140
> Call Trace:
> <TASK>
> erofs_kill_sb+0x81/0x90
> deactivate_locked_super+0x35/0x80
> get_tree_bdev+0x136/0x1e0
> vfs_get_tree+0x2c/0xf0
> do_new_mount+0x190/0x2f0
> [...]
> ============================================
>
> Now when erofs_kill_sb() is called, erofs_sb_info must have been
> initialised, so use sbi->fsid to distinguish between the two modes.
>
> Signed-off-by: Christian Brauner <brauner@kernel.org>
> Signed-off-by: Baokun Li <libaokun1@huawei.com>
Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Thanks,
Gao Xiang
next prev parent reply other threads:[~2024-04-28 7:17 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-19 12:36 [PATCH -next v3 0/2] erofs: reliably distinguish block based and fscache mode Baokun Li via Linux-erofs
2024-04-19 12:36 ` [PATCH -next v3 1/2] erofs: get rid of erofs_fs_context Baokun Li via Linux-erofs
2024-04-22 10:25 ` Jingbo Xu
2024-04-22 11:31 ` Baokun Li via Linux-erofs
2024-04-22 11:39 ` Jingbo Xu
2024-04-23 10:37 ` Gao Xiang
2024-04-28 7:10 ` Gao Xiang
2024-04-28 10:00 ` Chao Yu
2024-04-19 12:36 ` [PATCH -next v3 2/2] erofs: reliably distinguish block based and fscache mode Baokun Li via Linux-erofs
2024-04-22 11:52 ` Jingbo Xu
2024-04-28 7:17 ` Gao Xiang [this message]
2024-04-28 10:03 ` Chao Yu
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