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gfs2: Fix error handling in init_statfs

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commit 5d49d3508b3c67201bd3e1bf7f4ef049111b7051 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andreas Gruenbacher 2021-06-28 19:14:50 +08:00 committed by Greg Kroah-Hartman
parent 3ae1c663bd
commit f794c839df
1 changed files with 1 additions and 0 deletions
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1
fs/gfs2/ops_fstype.c
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@ -670,6 +670,7 @@ static int init_statfs(struct gfs2_sbd *sdp)
}
iput(pn);
pn = NULL;
ip = GFS2_I(sdp->sd_sc_inode);
error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0,
&sdp->sd_sc_gh);