| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.19 080/639] mailbox: ti-msgmgr: Off by one in ti_msgmgr_of_xlate() | Date | Fri, 24 Jan 2020 10:24:10 +0100 |
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From: Dan Carpenter <dan.carpenter@oracle.com>
[ Upstream commit 78f3ff524fca63e7d2a57149a34ade23d2c12798 ]
The > comparison should be >= or we access one element beyond the end of the array.
(The inst->qinsts[] array is allocated in the ti_msgmgr_probe() function and it has ->num_valid_queues elements.)
Fixes: a2b79838b891 ("mailbox: ti-msgmgr: Add support for Secure Proxy") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Nishanth Menon <nm@ti.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/mailbox/ti-msgmgr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mailbox/ti-msgmgr.c b/drivers/mailbox/ti-msgmgr.c index 5bceafbf66993..01e9e462512b7 100644 --- a/drivers/mailbox/ti-msgmgr.c +++ b/drivers/mailbox/ti-msgmgr.c @@ -547,7 +547,7 @@ static struct mbox_chan *ti_msgmgr_of_xlate(struct mbox_controller *mbox, } if (d->is_sproxy) { - if (req_pid > d->num_valid_queues) + if (req_pid >= d->num_valid_queues) goto err; qinst = &inst->qinsts[req_pid]; return qinst->chan; -- 2.20.1
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