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gfs2: Add missing truncate_inode_pages_final for sd_aspace 

[ Upstream commit a9dd945cce ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5.4-rM2-2.2.x-imx-squashed
Bob Peterson 2020-10-27 10:10:02 -05:00 committed by Greg Kroah-Hartman
parent 99dcfc517d
commit edeff05a1f
1 changed files with 1 additions and 0 deletions
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fs/gfs2/super.c
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@ -689,6 +689,7 @@ restart:
gfs2_jindex_free(sdp);
/* Take apart glock structures and buffer lists */
gfs2_gl_hash_clear(sdp);
truncate_inode_pages_final(&sdp->sd_aspace);
gfs2_delete_debugfs_file(sdp);
/* Unmount the locking protocol */
gfs2_lm_unmount(sdp);