On Fri, 28 Mar 2025 11:54:52 +0530, Ojaswin Mujoo wrote:
> Block validity checks need to be skipped in case they are called
> for journal blocks since they are part of system's protected
> zone.
>
> Currently, this is done by checking inode->ino against
> sbi->s_es->s_journal_inum, which is a direct read from the ext4 sb
> buffer head. If someone modifies this underneath us then the
> s_journal_inum field might get corrupted. To prevent against this,
> change the check to directly compare the inode with journal->j_inode.
>
> [...]
Applied, thanks!
[1/1] ext4: Make block validity check resistent to sb bh corruption
commit: ccad447a3d331a239477c281533bacb585b54a98
(Apologies for sending this late; I've been dealing with a family
medical emergency. In any case, the patch landed in v6.16-rc2.)
Best regards,
--
Theodore Ts'o <tytso@xxxxxxx>
