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Do not access NFS data for reclaimed vnode.

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Reported and tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Approved by:	re (delphij)
This commit is contained in:
Konstantin Belousov 2016-06-19 18:29:43 +00:00
parent 03475bd01a
commit e37dfd3d2b
1 changed files with 8 additions and 4 deletions
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12
sys/fs/nfsclient/nfs_clvnops.c
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@ -3097,10 +3097,14 @@ nfs_advlock(struct vop_advlock_args *ap)
}
}
if (error == 0 && ap->a_op == F_SETLK) {
/* Mark that a file lock has been acquired. */
mtx_lock(&np->n_mtx);
np->n_flag |= NHASBEENLOCKED;
mtx_unlock(&np->n_mtx);
error = NFSVOPLOCK(vp, LK_SHARED);
if (error == 0) {
/* Mark that a file lock has been acquired. */
mtx_lock(&np->n_mtx);
np->n_flag |= NHASBEENLOCKED;
mtx_unlock(&np->n_mtx);
NFSVOPUNLOCK(vp, 0);
}
}
}
return (error);