| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.9 090/255] gfs2: Add missing truncate_inode_pages_final for sd_aspace | Date | Tue, 17 Nov 2020 14:03:50 +0100 |
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From: Bob Peterson <rpeterso@redhat.com>
[ Upstream commit a9dd945ccef07a904e412f208f8de708a3d7159e ]
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> --- fs/gfs2/super.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index 32ae1a7cdaed8..831f6e31d6821 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -732,6 +732,7 @@ 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); -- 2.27.0
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