linux-kernel - [PATCH] iommu/amd: Propagate the error code returned by __modify_irte_ga() in modify_irte

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-Id: <20251120154725.435-1-guojinhui.liam@bytedance.com>
Date: Thu, 20 Nov 2025 23:47:25 +0800
From: "Jinhui Guo" <guojinhui.liam@...edance.com>
To: <joro@...tes.org>, <suravee.suthikulpanit@....com>
Cc: <guojinhui.liam@...edance.com>, <iommu@...ts.linux.dev>, 
	<linux-kernel@...r.kernel.org>, <stable@...r.kernel.org>
Subject: [PATCH] iommu/amd: Propagate the error code returned by __modify_irte_ga() in modify_irte_ga()

The return type of __modify_irte_ga() is int, but modify_irte_ga()
treats it as a bool. Casting the int to bool discards the error code.

To fix the issue, change the type of ret to int in modify_irte_ga().

Fixes: 57cdb720eaa5 ("iommu/amd: Do not flush IRTE when only updating isRun and destination fields")
Cc: stable@...r.kernel.org
Signed-off-by: Jinhui Guo <guojinhui.liam@...edance.com>
---
 drivers/iommu/amd/iommu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iommu/amd/iommu.c b/drivers/iommu/amd/iommu.c
index 2e1865daa1ce..a38304f1a8df 100644
--- a/drivers/iommu/amd/iommu.c
+++ b/drivers/iommu/amd/iommu.c
@@ -3354,7 +3354,7 @@ static int __modify_irte_ga(struct amd_iommu *iommu, u16 devid, int index,
 static int modify_irte_ga(struct amd_iommu *iommu, u16 devid, int index,
 			  struct irte_ga *irte)
 {
-	bool ret;
+	int ret;
 
 	ret = __modify_irte_ga(iommu, devid, index, irte);
 	if (ret)
-- 
2.20.1