[Ocfs2-devel] [PATCH] ocfs2: fix a null pointer derefrence in ocfs2_block_group_clear_bits()

[Joseph Qi]

Hi Andrew,

On 2020/3/12 09:40, Andrew Morton wrote:

<snip>

> 
> (top-posting repaired)
> 
>> ping ?
>> cc Andrew Morton
> 
> There's something dreadfully wrong with the ocfs2-devel mailing list. 
> I almost never receive patches when people add me to cc.  I've never
> seen much of a pattern to it - it just drops stuff everywhere.
> 
> Who is the admin for this list?  Can we please move it to kernel.org?
> 

>From the web page info, it was run by Srinivas Eeda, but I am not sure
whether he still maintains the list now.
So current workaround may be, sending to you directly along with cc to
the mail list.

Thanks,
Joseph

> Regarding this patch, I did actually receive one email from the server.
> From Joseph:
> 
> : > +		if (!undo_bg)
> : > +			mlog(ML_NOTICE, "%s: group descriptor # %llu (device %s) journal "
> : > +					"b_committed_data had been cleared.\n",
> : > +					OCFS2_SB(alloc_inode->i_sb)->uuid_str,
> : > +					(unsigned long long)le64_to_cpu(bg->bg_blkno),
> : > +					alloc_inode->i_sb->s_id);
> : 
> : Seems a kind of workaround.
> : I am worrying about other abnormal cases of NULL b_committed_data, it
> : may lead to a corrupt filesystem.
> : So how about isolating the journal abort case?
>