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gfs2: Add missing truncate_inode_pages_final for sd_aspace

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Gfs2 creates an address space for its rgrps called sd_aspace, but it never
called truncate_inode_pages_final on it. This confused vfs greatly which
tried to reference the address space after gfs2 had freed the superblock
that contained it.

This patch adds a call to truncate_inode_pages_final for sd_aspace, thus
avoiding the use-after-free.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
This commit is contained in:
Bob Peterson 2020-10-27 10:10:02 -05:00 committed by Andreas Gruenbacher
parent d0f17d3883
commit a9dd945cce
1 changed files with 1 additions and 0 deletions
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fs/gfs2/super.c
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@ -738,6 +738,7 @@ static void gfs2_put_super(struct super_block *sb)
gfs2_jindex_free(sdp); gfs2_jindex_free(sdp);
/* Take apart glock structures and buffer lists */ /* Take apart glock structures and buffer lists */
gfs2_gl_hash_clear(sdp); gfs2_gl_hash_clear(sdp);
truncate_inode_pages_final(&sdp->sd_aspace);
gfs2_delete_debugfs_file(sdp); gfs2_delete_debugfs_file(sdp);
/* Unmount the locking protocol */ /* Unmount the locking protocol */
gfs2_lm_unmount(sdp); gfs2_lm_unmount(sdp);