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authorSteven Whitehouse <swhiteho@redhat.com>2008-11-27 08:27:28 +0000
committerSteven Whitehouse <swhiteho@redhat.com>2009-01-05 07:39:14 +0000
commit3af165ac4d099385b12e3e75a9ee3ffd02da33e0 (patch)
treeb90552f6ac8db316c05d5f3246366cfa09cc7473 /fs/gfs2/glock.h
parent2e204703a1161e9bae38ba0d3d0df04a679e6f4f (diff)
downloadop-kernel-dev-3af165ac4d099385b12e3e75a9ee3ffd02da33e0.zip
op-kernel-dev-3af165ac4d099385b12e3e75a9ee3ffd02da33e0.tar.gz
GFS2: Fix use-after-free bug on umount
There was a use-after-free with the GFS2 super block during umount. This patch moves almost all of the umount code from ->put_super into ->kill_sb, the only bit that cannot be moved being the glock hash clearing which has to remain as ->put_super due to umount ordering requirements. As a result its now obvious that the kfree is the final operation, whereas before it was hidden in ->put_super. Also gfs2_jindex_free is then only referenced from a single file so thats moved and marked static too. Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2/glock.h')
-rw-r--r--fs/gfs2/glock.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/gfs2/glock.h b/fs/gfs2/glock.h
index 543ec7e..ce54f33 100644
--- a/fs/gfs2/glock.h
+++ b/fs/gfs2/glock.h
@@ -130,7 +130,7 @@ void gfs2_lvb_unhold(struct gfs2_glock *gl);
void gfs2_glock_cb(void *cb_data, unsigned int type, void *data);
void gfs2_reclaim_glock(struct gfs2_sbd *sdp);
-void gfs2_gl_hash_clear(struct gfs2_sbd *sdp);
+void gfs2_gl_hash_clear(struct super_block *sb);
void gfs2_glock_finish_truncate(struct gfs2_inode *ip);
int __init gfs2_glock_init(void);
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