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gfs2: Improve gfs2_make_fs_rw error handling 

In gfs2_make_fs_rw(), make sure to call gfs2_consist() to report an
inconsistency and mark the filesystem as withdrawn when
gfs2_find_jhead() fails.

At the end of gfs2_make_fs_rw(), when we discover that the filesystem
has been withdrawn, make sure we report an error.  This also replaces
the gfs2_withdrawn() check after gfs2_find_jhead().

Reported-by: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Cc: syzbot+f51cb4b9afbd87ec06f2@syzkaller.appspotmail.com
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
This commit is contained in:
Andreas Gruenbacher 2023-01-31 15:06:53 +01:00
parent 445cb1277e
commit b66f723bb5
1 changed files with 6 additions and 2 deletions
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8
fs/gfs2/super.c
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@ -138,8 +138,10 @@ int gfs2_make_fs_rw(struct gfs2_sbd *sdp)
return -EIO;
error = gfs2_find_jhead(sdp->sd_jdesc, &head, false);
if (error || gfs2_withdrawn(sdp))
if (error) {
gfs2_consist(sdp);
return error;
}
if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT)) {
gfs2_consist(sdp);
@ -151,7 +153,9 @@ int gfs2_make_fs_rw(struct gfs2_sbd *sdp)
gfs2_log_pointers_init(sdp, head.lh_blkno);
error = gfs2_quota_init(sdp);
if (!error && !gfs2_withdrawn(sdp))
if (!error && gfs2_withdrawn(sdp))
error = -EIO;
if (!error)
set_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags);
return error;
}