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Commit 18c6ac38 authored by Sunil Mushran's avatar Sunil Mushran Committed by Mark Fasheh
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[PATCH] ocfs2/dlm: Fixes oops in dlm_new_lockres() 



Patch fixes a race that can result in an oops while adding a
lockres to the dlm lockres tracking list.

Bug introduced by mainline commit 29576f8b.

Signed-off-by: default avatarSunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: default avatarMark Fasheh <mfasheh@suse.com>
parent b2798bf0

fs/ocfs2/dlm/dlmmaster.c

+2 −0
Original line number Original line Diff line number Diff line
@@ -606,7 +606,9 @@ static void dlm_init_lockres(struct dlm_ctxt *dlm, 




	res->last_used = 0;

	res->last_used = 0;





	spin_lock(&dlm->spinlock);

	list_add_tail(&res->tracking, &dlm->tracking_list);

	list_add_tail(&res->tracking, &dlm->tracking_list);

	spin_unlock(&dlm->spinlock);





	memset(res->lvb, 0, DLM_LVB_LEN);

	memset(res->lvb, 0, DLM_LVB_LEN);

	memset(res->refmap, 0, sizeof(res->refmap));

	memset(res->refmap, 0, sizeof(res->refmap));