linux-kernel - f2fs do DIO write make file corruption

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 11 Aug 2021 10:48:53 +0800
From:   Wu Bo <bo.wu@...o.com>
To:     bo.wu@...o.com, linux-kernel@...r.kernel.org,
        linux-f2fs-devel@...ts.sourceforge.net
Subject: f2fs do DIO write make file corruption

I use the following command to create a file, the file may got corruption:
	f2fs_io write 2 0 512 inc_num dio $path

And when I use bio or to set the chunk size to 1 block, the file is 
normal. The commands as following:
	f2fs_io write 2 0 512 inc_num buffered $path
	f2fs_io write 1 0 512 inc_num dio $path

I find this bug on old kernel version 4.14.117, and not find on version 
4.19.152. So this bug is fixed. Can anyone can tell me which patch fixed 
this bug?