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gfs2: Fix error handling in init_statfs
On an error path, init_statfs calls iput(pn) after pn has already been put.
Fix that by setting pn to NULL after the initial iput.
Fixes: 97fd734ba1
("gfs2: lookup local statfs inodes prior to journal recovery")
Cc: stable@vger.kernel.org # v5.10+
Reported-by: Jing Xiangfeng <jingxiangfeng@huawei.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
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@ -687,6 +687,7 @@ static int init_statfs(struct gfs2_sbd *sdp)
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}
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iput(pn);
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pn = NULL;
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ip = GFS2_I(sdp->sd_sc_inode);
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error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0,
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&sdp->sd_sc_gh);
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