From: Mario Limonciello Date: Mon, 9 May 2022 14:17:16 +0000 (-0500) Subject: mailbox: pcc: Fix an invalid-load caught by the address sanitizer X-Git-Tag: v5.19-rc1~133^2~3 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=369e4ef87a8f5da7c348ec2c61ec5cd726e8337a;p=thirdparty%2Fkernel%2Flinux.git mailbox: pcc: Fix an invalid-load caught by the address sanitizer `pcc_mailbox_probe` doesn't initialize all memory that has been allocated before the first time that one of it's members `txdone_irq` may be accessed. This leads to a an invalid load any time that this member is accessed: [ 2.429769] UBSAN: invalid-load in drivers/mailbox/pcc.c:684:22 [ 2.430324] UBSAN: invalid-load in drivers/mailbox/mailbox.c:486:12 [ 4.276782] UBSAN: invalid-load in drivers/acpi/cppc_acpi.c:314:45 Link: https://bugzilla.kernel.org/show_bug.cgi?id=215587 Fixes: ce028702ddbc ("mailbox: pcc: Move bulk of PCCT parsing into pcc_mbox_probe") Signed-off-by: Mario Limonciello Reviewed-by: Sudeep Holla Signed-off-by: Jassi Brar --- diff --git a/drivers/mailbox/pcc.c b/drivers/mailbox/pcc.c index ed18936b8ce68..ebfa33a40fceb 100644 --- a/drivers/mailbox/pcc.c +++ b/drivers/mailbox/pcc.c @@ -654,7 +654,7 @@ static int pcc_mbox_probe(struct platform_device *pdev) goto err; } - pcc_mbox_ctrl = devm_kmalloc(dev, sizeof(*pcc_mbox_ctrl), GFP_KERNEL); + pcc_mbox_ctrl = devm_kzalloc(dev, sizeof(*pcc_mbox_ctrl), GFP_KERNEL); if (!pcc_mbox_ctrl) { rc = -ENOMEM; goto err;