From: Harini T Date: Mon, 29 Sep 2025 07:37:22 +0000 (+0530) Subject: mailbox: zynqmp-ipi: Fix out-of-bounds access in mailbox cleanup loop X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=0aead8197fc1a85b0a89646e418feb49a564b029;p=users%2Fhch%2Fmisc.git mailbox: zynqmp-ipi: Fix out-of-bounds access in mailbox cleanup loop The cleanup loop was starting at the wrong array index, causing out-of-bounds access. Start the loop at the correct index for zero-indexed arrays to prevent accessing memory beyond the allocated array bounds. Fixes: 4981b82ba2ff ("mailbox: ZynqMP IPI mailbox controller") Signed-off-by: Harini T Reviewed-by: Peng Fan Signed-off-by: Jassi Brar --- diff --git a/drivers/mailbox/zynqmp-ipi-mailbox.c b/drivers/mailbox/zynqmp-ipi-mailbox.c index bdcc6937ee30..dddbef6b2cb8 100644 --- a/drivers/mailbox/zynqmp-ipi-mailbox.c +++ b/drivers/mailbox/zynqmp-ipi-mailbox.c @@ -890,7 +890,7 @@ static void zynqmp_ipi_free_mboxes(struct zynqmp_ipi_pdata *pdata) if (pdata->irq < MAX_SGI) xlnx_mbox_cleanup_sgi(pdata); - i = pdata->num_mboxes; + i = pdata->num_mboxes - 1; for (; i >= 0; i--) { ipi_mbox = &pdata->ipi_mboxes[i]; if (device_is_registered(&ipi_mbox->dev))