[LU-7077] Pointer 'hash' returned from call to function 'cfs_hash_getref' may be NULL and will be dereferenced.

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.8.0
• Labels: kw
• Severity: 3
• Assignee: Bob Glossman (Inactive)
• Reporter: Dmitry Eremin (Inactive)

Description

lustre/obdclass/genops.c:944

hash = cfs_hash_getref(exp->exp_obd->obd_gen_hash);
cfs_hash_del(hash, &ted->ted_lcd->lcd_generation,
	     &exp->exp_gen_hash);
cfs_hash_putref(hash);

struct cfs_hash *cfs_hash_getref(struct cfs_hash *hs)
{
	if (atomic_inc_not_zero(&hs->hs_refcount))
		return hs;
	return NULL;
}

Issue Links

• is related to: LU-6840 update memory reply data in DNE update replay