Commit a9dd945c authored Oct 27, 2020 by Bob Peterson Committed by Andreas Gruenbacher Oct 29, 2020

gfs2: Add missing truncate_inode_pages_final for sd_aspace



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>

parent d0f17d38

fs/gfs2/super.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -738,6 +738,7 @@ 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);

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